[world-vercel] Isolate run-status long polls - #3709

Draft
shalabhc wants to merge 1 commit into
mainfrom
deflake
Draft

[world-vercel] Isolate run-status long polls#3709
shalabhc wants to merge 1 commit into
mainfrom
deflake

Conversation

@shalabhc

@shalabhcshalabhc commented Aug 21, 2026

Copy link
Copy Markdown
Collaborator

Summary

  • route held run-status requests through a dedicated connection pool
  • keep ordinary workflow-server traffic available while concurrent run.returnValue waits are open
  • apply the same isolation to the optional node:http transport and preserve explicit dispatcher overrides

Why

Main run 32413467237 failed 29 Vercel E2E lanes after #3570 enabled run-status long polling. Local, Postgres, Windows, and Python lanes stayed green.

The default world-vercel HTTP/1.1 agent has 8 connections. Concurrent E2E lanes peaked at 6-8 tests, and each run.returnValue can hold a status request for 50 seconds. Those waits consumed the default pool, starving the ordinary reads and hook/control calls needed for runs to complete. Failure artifacts consequently contain broad 30s/60s timeouts across unrelated tests and frameworks.

Test plan

  • pnpm --filter @workflow/world-vercel test (550 passed)
  • pnpm vitest run packages/core/src/runtime/run-return-value-long-poll.test.ts (17 passed)
  • pnpm turbo run typecheck --filter=@workflow/world-vercel
  • pnpm biome check packages/world-vercel/src/http-client.ts packages/world-vercel/src/utils.ts packages/world-vercel/src/runs.ts packages/world-vercel/src/http-client.test.ts .changeset/run-status-pool-isolation.md (no errors; existing makeRequest complexity warning only)

@vercel@shalabhc
[world-vercel] Isolate run-status long polls
4f2b4f6
Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>
@changeset-bot

changeset-botBot commented Aug 21, 2026

Copy link
Copy Markdown

🦋 Changeset detected

Latest commit: 4f2b4f6

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 17 packages
NameType
@workflow/world-vercelPatch
@workflow/cliPatch
@workflow/corePatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

@vercel

vercelBot commented Aug 21, 2026•
edited
Loading

Copy link
Copy Markdown
Contributor

The latest updates on your projects. Learn more about Vercel for GitHub.

ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreviewAug 21, 2026 6:21am
example-nextjs-workflow-webpackReadyReadyPreviewAug 21, 2026 6:21am
example-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-astro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-express-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-fastify-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-hono-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nestjs-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nitro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nuxt-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-python-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-sveltekit-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-tanstack-start-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-vite-workflowReadyReadyPreviewAug 21, 2026 6:21am
workflow-docsReadyReadyPreview, v0Aug 21, 2026 6:21am
workflow-swc-playgroundReadyReadyPreviewAug 21, 2026 6:21am
workflow-tarballsReadyReadyPreviewAug 21, 2026 6:21am
workflow-webReadyReadyPreviewAug 21, 2026 6:21am

@github-actions

github-actionsBot commented Aug 21, 2026•
edited
Loading

Copy link
Copy Markdown
Contributor

📊 Workflow Benchmarks

commit 4f2b4f6 · Fri, 21 Aug 2026 06:38:33 GMT · run logs

Backend: vercel · app: nextjs-turbopack

MetricScenarioBest (ms)P75 (ms)P90 (ms)P99 (ms)Samples
TTFSstep287 (-58%) 💚1302 🔴 (+26%) 🔻1329 🔴 (+20%) 🔻1505 🔴 (±0%)30
TTFSstream1196 (+335%) 🔻1275 🔴 (+17%) 🔻1291 🔴 (+18%) 🔻1304 🔴 (+15%)30
TTFShook + stream1459 (+14%)1577 🔴 (+10%)1644 🔴 (-1.1%)1863 🔴 (-60%) 💚30
Fan-out TTFSPromise.all(100 steps)550 (+26%) 🔻857 (+38%) 🔻872 (+30%) 🔻2012 (+2.8%)10
Fan-out TTLSPromise.all(100 steps)4653 (+6.1%)7332 (-2.2%)9518 (+24%) 🔻11255 (+28%) 🔻10
STSO1020 steps (inline)115 (-9.4%)197 (-19%) 💚249 (-13%)346 (-24%) 💚1019
WO1020 steps178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚1
CRTTfirst chunk (pooled)85 (-3.4%)142 (+10%)179 (+19%) 🔻316 (-22%) 💚28

Streams

ScenarioCRTT 1stp75p90p99CDV maxiters
paced control (100/s, 60B)114 (+7%)117 (-5%)141 (-33%)257 (-49%)105 (-17%)10
size sweep (100/s, 160B-12KB)105 (+1%)117 (-11%)134 (-39%)278 (-48%)95.5 (-42%)10
replay gateway-gpt-5.4-nano-2000t (1x)178 (+31%)127 (-7%)340 (+67%)898 (+62%)143 (-1%)3
replay eve-gpt-5.6-sol-2000t (1x)134 (-47%)107 (-57%)138 (-90%)284 (-94%)417 (-82%)2
replay eve-gpt-5.6-sol-2000t (2x)139 (-7%)154 (-13%)226 (-28%)1058 (+9%)592 (+2%)3
📈 STSO distribution vs main (inline / queue-hop histograms)

1020 steps (inline)

Cumulative STSO time: main 231540ms → this run 177014ms (Δ -54526ms, -24%)

100-150 ms █░░░░░░░░░░░░░░░░░░░░░░┃ main 6 this 499 +493
150-200 ms ████████████┃████ main 344 this 271 -73
200-250 ms ██████┃███████████████ main 451 this 149 -302
250-300 ms ██┃████ main 144 this 66 -78
300-350 ms ┃█ main 45 this 24 -21
350-400 ms ┃ main 7 this 3 -4
400-450 ms ┃ main 10 this 1 -9
450-500 ms ┃ main 5 this 1 -4
500-550 ms ┃ main 1 this 2 +1
550-600 ms ┃ main 2 this 1 -1
600-650 ms ┃ main 1 this 1 +0
650-700 ms ┃ main 0 this 1 +1
700-750 ms ┃ main 2 this 0 -2
800-850 ms ┃ main 1 this 0 -1
📈 CRTT drill-down vs main (RTT distributions & profiles)
variant RTT 1ms→5s+ avg p50 p90 p99 n
control ······█▇▁···· 100.3 (-9%) 94 (-4%) 141 (-33%) 257 (-49%) 3000
sweep ······█▇▁···· 99.6 (-16%) 95 (-9%) 134 (-39%) 278 (-48%) 3000
gw 1x ·····▁█▇▁▁▁·· 118.6 (+6%) 98 (-1%) 340 (+67%) 898 (+62%) 5295
eve 1x ·····▁█▅▁▁··· 95.4 (-70%) 87 (-16%) 138 (-90%) 284 (-94%) 5186
eve 2x ·····▁▆█▂▁▁·· 135.3 (-12%) 109 (-14%) 226 (-28%) 1058 (+9%) 7779

RTT over stream progress (avg per tenth of stream, bars scaled min→max):

control █▃▃▄▆▃▄▂▃▁ 91–115ms
sweep █▄▃▃▃▃▁▃▄▂ 90–118ms
gw 1x ▅▃▁█▁▂▃▂▁▁ 94–200ms
eve 1x █▂▄▃▂▃▆▅▄▁ 79–121ms
eve 2x ▂▄█▂▁▂▃▃▂▂ 97–245ms

RTT by chunk size (avg per log size bin, ~160B → ~12KB serialized, bars scaled min→max):

sweep █▇▆▆▄▁▃ 97–102ms

Delivery jitter over stream progress (avg positive CDV per tenth of stream, bars scaled min→max):

control ▃▄▆██▁█▃▄▂ 26–33ms
sweep ▅▄▆█▆▇▃▂▇▁ 37–45ms
gw 1x █▄▁▃▂▂▄▁▁▁ 29–40ms
eve 1x ▇▁▃▁▄▄█▄█▇ 17–23ms
eve 2x ▃▇█▂▄▇▁▃▂▆ 19–24ms
ℹ️ Metric definitions & methodology

Streams: first-chunk RTT (the stream-open path, before any buffering/backpressure), CRTT percentiles, and worst delivery stall (CDV max). Cells are medians across iterations; per-run values in the artifacts. No 🔴/🟢 marks until targets attach.

The collapsed STSO distribution section above buckets every step gap, split inline (same warm process — pure framework overhead) vs queue-hop (fresh process — dispatch, reinit, replay). █ = main, ┃ = this run, ░ = fill.

The collapsed CRTT drill-down: per-variant RTT histograms (fixed log bins, · = empty) and mean RTT/positive-CDV profile lines over stream progress and chunk size. Histograms, avgs, and profiles merge exactly across runs; p50–p99 are percentile-of-percentiles. Per-index rows live in the artifacts.

Best/P75/P90/P99 deltas compare against the most recent benchmark run on main at the time of this run. 🔻 flags a delta worse than +15%, 💚 one better than −15%.

Metrics — TTFS: time to first step body (in-deployment start() → first step body) · Fan-out TTFS: fan-out time to first step (in-deployment start() → first of the parallel step bodies to complete) · Fan-out TTLS: fan-out time to last step (in-deployment start() → last of the parallel step bodies to complete, i.e. when the Promise.all resolves) · STSO: step-to-step overhead (gap between consecutive step bodies) · WO: workflow overhead (whole-run time outside step bodies, in-deployment anchored) · CRTT: chunk round-trip time (per-chunk write → read latency, one clock domain: deployment → stream backend → same deployment) · CDV: chunk delay variation / delivery jitter (inter-arrival gap minus inter-write gap per seq-adjacent pair; skew-free; the row is each run's MAX positive value, so one stall moves it)

Scenarios — step: one trivial no-op step, no stream; no hooks, so the run stays in turbo mode (in-process fast path) · stream: one streaming step; no hooks, so the run stays in turbo mode (in-process fast path) · hook + stream: registers a hook before one step, which exits turbo mode (dispatch path) · 1020 steps: 1020 trivial sequential steps; STSO is measured between consecutive steps in the given step ranges, and WO is the whole-run overhead outside step bodies · Promise.all(100 steps): 100 trivial no-op steps started together in a single Promise.all; Fan-out TTFS is the first of them to complete and Fan-out TTLS the last, both from the in-deployment clientStart, so their gap is the spread the runtime adds across the fan-out · paced control (100/s, 60B): the control: 300 tiny (~60B) deltas metronome-paced at 100/s — zero workload structure, so it reads the transport floor and flush cadence, and disambiguates transport-wide vs workload-specific when a replay row moves · size sweep (100/s, 160B-12KB): same pacing as the control with deltas padded in rotation across seven log-spaced sizes (~160B–12KB) — rotation decouples size from stream position, so it isolates whether chunk size causes latency · replay gateway-gpt-5.4-nano-2000t (1x): raw provider SSE cadence captured at the AI gateway boundary (gpt-5.4-nano, the most popular gateway model; per-token deltas p50 208B = the modal production chunk size), replayed exactly as measured — the typical customer's workload; its CDV is the typical customer's real delivery jitter · replay eve-gpt-5.6-sol-2000t (1x): a captured eve turn (gpt-5.6-sol, the most-used demanding eve model; ~2000 output tokens = production p50 turn length) replayed exactly as measured — eve's envelope protocol re-ships the cumulative message so sizes ramp 142B→13KB; the demanding outlier tenant's reality · replay eve-gpt-5.6-sol-2000t (2x): the same eve capture at 2x — the headroom/stress row; real fast-tier models emit the same chunk sizes at proportionally higher rate, so time compression is a faithful speed model · first chunk (pooled): every run's seq-0 RTT pooled across all stream scenarios — the first chunk precedes any workload differentiation, so pooling samples one shared stream-open path with exact percentiles

Replay cadences (semantic sha256) — eve-gpt-5.6-sol-2000teaf22f5946e7c61f3c65c7006d550df180cfabd4e706254a09f22aec0cfb420d · gateway-gpt-5.4-nano-2000t6f24ac518b6b83ff1d0e85a5fe78230db192716d66a7fc6b2fe022752001d041

🔴 marks a percentile over its target (within target is left unmarked). Targets (p75/p90/p99, ms) — TTFS 200/300/600

All timestamps are deployment-side; runs are triggered in-deployment, so the CI runner and api.vercel.com sit outside every measured window. TTFS = start() → first step body (includes dispatch + any cold start); Fan-out TTFS/TTLS = first/last step completion of one Promise.all from the same anchor (the gap is the runtime’s fan-out spread); STSO/WO between step bodies; CRTT inside the workflow (excludes the api.vercel.com read path).

Cold starts stay in the numbers (real bursty-workload latency, inflates P75+); Best is the warm floor.

@github-actions

github-actionsBot commented Aug 21, 2026•
edited
Loading

Copy link
Copy Markdown
Contributor

🧪 E2E Test Results

❌ Some tests failed

❌ Failed E2E Tests

▲ Vercel Production (225 failed)

astro-node (9 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit

astro-quickjs (9 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run

example-node (8 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run

example-quickjs (11 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run

express-node (5 failed):

  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting

express-quickjs (11 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit

fastify-node (9 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting

fastify-quickjs (11 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit

hono-node (8 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting

hono-quickjs (8 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting

nest-node (11 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit

nest-quickjs (8 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit

nextjs-turbopack-node (2 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability

nextjs-turbopack-quickjs (10 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit

nextjs-webpack-node (10 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit

nextjs-webpack-quickjs (7 failed):

  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit

nitro-node (10 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit

nitro-quickjs (10 failed):

  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit

nuxt-node (11 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit

nuxt-quickjs (10 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run

sveltekit-node (8 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting

sveltekit-quickjs (10 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run

tanstack-start-node (6 failed):

  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting

tanstack-start-quickjs (7 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting

vite-node (5 failed):

  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting

vite-quickjs (11 failed):

  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit

🐘 Local Postgres (1 failed)

vite-stable-quickjs (1 failed):

  • cancelRun via CLI - cancelling a running workflow | wrun_41M0HG37470GZP18JM4XZQH2Y9

⚠️ Flaky E2E Tests (passed on retry)

These tests failed at least once and passed on a retry. A recurring entry here is a real race worth investigating.

28 flaky tests
  • cancelRun via CLI - cancelling a running workflow (hono)
  • cancelRun via CLI - cancelling a running workflow (nextjs-turbopack)
  • cancelRun via CLI - cancelling a running workflow (vite)
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously (example)
  • cross-file step error preserves message and function names in stack (astro)
  • fire-and-forget: void setAttributes lands without awaiting (nextjs-turbopack)
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data (nextjs-webpack)
  • hookCleanupTestWorkflow - hook token reuse after workflow completion (vite)
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps (nextjs-webpack)
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered (nextjs-webpack)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (express)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (sveltekit)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (tanstack-start)
  • Promise.all of disjoint-key writes: every key lands (fastify)
  • Promise.all of disjoint-key writes: every key lands (hono)
  • Promise.all of disjoint-key writes: every key lands (nuxt)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (astro)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (vite)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (example)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (hono)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (nextjs-turbopack)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (sveltekit)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (vite)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (fastify)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (hono)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nest)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nextjs-webpack)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nitro)

🛠 Infra Events (absorbed by the harness)

Platform anomalies the e2e harness detected and worked around (e.g. a run the queue never picked up, replaced by a fresh run). Clustered timestamps indicate a backend blip; a steady drip indicates a platform issue worth escalating.

  • run-pickup-stall · Calculator.calculate - static workflow method using static step methods from another class (tanstack-start) · at 06:24:33Z · abandoned wrun_01M0HFVR2VDKZ1S5XAYGFR2TZF

E2E Test Summary

Summary
PassedFailedSkippedTotal
❌ ▲ Vercel Production33532257424320
✅ 💻 Local Development392205584480
✅ 📦 Local Production392205584480
❌ 🐘 Local Postgres392115584480
✅ 🪟 Windows16000160
✅ 🌐 Cross-language Conformance90132141
✅ vercel-multi-region270027
Total15314226254818088
Details by Category

❌ ▲ Vercel Production

AppPassedFailedSkipped
❌ astro-node123928
❌ astro-quickjs123928
❌ example-node124828
❌ example-quickjs1211128
❌ express-node127528
❌ express-quickjs1211128
❌ fastify-node123928
❌ fastify-quickjs1211128
❌ hono-node124828
❌ hono-quickjs124828
❌ nest-node1211128
❌ nest-quickjs124828
❌ nextjs-turbopack-node15523
❌ nextjs-turbopack-quickjs147103
❌ nextjs-webpack-node147103
❌ nextjs-webpack-quickjs15073
❌ nitro-node1221028
❌ nitro-quickjs1221028
❌ nuxt-node1211128
❌ nuxt-quickjs1221028
✅ python-node80152
❌ sveltekit-node14389
❌ sveltekit-quickjs141109
❌ tanstack-start-node126628
❌ tanstack-start-quickjs125728
❌ vite-node127528
❌ vite-quickjs1211128

✅ 💻 Local Development

AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026

✅ 📦 Local Production

AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026

❌ 🐘 Local Postgres

AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
❌ vite-stable-quickjs133126

✅ 🪟 Windows

AppPassedFailedSkipped
✅ nextjs-turbopack-quickjs16000

✅ 🌐 Cross-language Conformance

AppPassedFailedSkipped
✅ python90132

✅ vercel-multi-region

AppPassedFailedSkipped
✅ nextjs-turbopack2700

📋 View full workflow run

@github-actions

github-actionsBot commented Aug 21, 2026

Copy link
Copy Markdown
Contributor

Sim World

Simulated world deterministic testing for races. Traces

🟠 world-sim scenario book — 1 fail of 41 total

fence=per-spec

scenariooutcomeeventsvirtreplayviolations
✅ smoke-no-stepscompleted30msok0
✅ smoke-one-stepcompleted60msok0
✅ hook-at-step-startedcompleted120msok0
✅ hook-at-step-completedcompleted120msok0
✅ hook-at-hook-createdcompleted120msok0
✅ deadline-hook-winscompleted71.0hok0
✅ deadline-expirescompleted71.0hok0
✅ long-sleepcompleted1130.0dok0
✅ hook-never-arrivesstalled30msskipped0
✅ step-retries-twicecompleted102.0sok0
✅ parallel-stepscompleted90msok0
✅ hook-on-execution-statecompleted120msok0
✅ peek-hook-before-branchcompleted120msok0
✅ peek-hook-after-branchcompleted120msok0
✅ peek-hook-at-registrationcompleted120msok0
✅ race-hook-before-probecompleted120msok0
✅ race-hook-after-probecompleted120msok0
✅ race-duplicate-deliverycompleted130msok0
✅ attr-hook-before-stepcompleted110msok0
✅ attr-hook-after-stepcompleted110msok0
✅ attr-from-step-bodycompleted130msok0
✅ fork-hook-after-timeoutcompleted141.0mok0
✅ fork-hook-before-timeoutcompleted141.0mok0
✅ count-hook-after-timeoutcompleted171.0mok0
✅ count-hook-before-timeoutcompleted201.0mok0
✅ stale-read-step-count-forkcompleted201.0mok0
✅ stale-read-equal-step-countscompleted141.0mok0
✅ step-vs-step-forkcompleted120msok0
✅ step-vs-step-fork-fencedcompleted120msok0
✅ fence-catches-benign-directioncompleted125msok0
✅ in-flight-before-decisioncompleted171.0mok0
❌ in-flight-before-decision-countedcompleted171.0mok0
✅ in-flight-after-decisioncompleted192.0mok0
✅ stale-read-step-count-fork-fencedcompleted201.0mok0
✅ fork-hook-winscompleted131.0mok0
✅ fork-timeout-winscompleted131.0mok0
✅ unclaimed-payload-under-forkcompleted171.0mok0
✅ claimed-payload-under-forkcompleted171.0mok0
✅ writers-independent-step-bodiescompleted120msok0
✅ writers-scripted-tempocompleted120msok0
✅ cancel-mid-stepcancelled70msskipped0

Full trace: world-sim.txt

@VaguelySeriousVaguelySerious mentioned this pull request Aug 21, 2026
Merged
Sign up for freeto join this conversation on GitHub. Already have an account? Sign in to comment

Reviewers

No reviews

Assignees

No one assigned

Labels

None yet

Projects

None yet

Milestone

No milestone

Development

Successfully merging this pull request may close these issues.

1 participant

@shalabhc
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
[world-vercel] Isolate run-status long polls - #3709
Draft
shalabhc wants to merge 1 commit into
mainfrom 
deflake
Draft
[world-vercel] Isolate run-status long polls#3709
shalabhc wants to merge 1 commit into
mainfrom 
deflake
Conversation
@shalabhc
@shalabhcshalabhc
commented
Aug 21, 2026

Copy link


Copy Markdown

Collaborator
Summary
  • route held run-status requests through a dedicated connection pool
  • keep ordinary workflow-server traffic available while concurrent run.returnValue waits are open
  • apply the same isolation to the optional node:http transport and preserve explicit dispatcher overrides
Why
Main run 32413467237 failed 29 Vercel E2E lanes after #3570 enabled run-status long polling. Local, Postgres, Windows, and Python lanes stayed green.
The default world-vercel HTTP/1.1 agent has 8 connections. Concurrent E2E lanes peaked at 6-8 tests, and each run.returnValue can hold a status request for 50 seconds. Those waits consumed the default pool, starving the ordinary reads and hook/control calls needed for runs to complete. Failure artifacts consequently contain broad 30s/60s timeouts across unrelated tests and frameworks.
Test plan
  • pnpm --filter @workflow/world-vercel test (550 passed)
  • pnpm vitest run packages/core/src/runtime/run-return-value-long-poll.test.ts (17 passed)
  • pnpm turbo run typecheck --filter=@workflow/world-vercel
  • pnpm biome check packages/world-vercel/src/http-client.ts packages/world-vercel/src/utils.ts packages/world-vercel/src/runs.ts packages/world-vercel/src/http-client.test.ts .changeset/run-status-pool-isolation.md (no errors; existing makeRequest complexity warning only)
@vercel@shalabhc
[world-vercel] Isolate run-status long polls
4f2b4f6
Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>
@changeset-bot
changeset-botBot
commented
Aug 21, 2026

Copy link


Copy Markdown

🦋 Changeset detected
Latest commit: 4f2b4f6
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 17 packages
NameType
@workflow/world-vercelPatch
@workflow/cliPatch
@workflow/corePatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@vercel
vercelBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
The latest updates on your projects. Learn more about Vercel for GitHub.
ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreviewAug 21, 2026 6:21am
example-nextjs-workflow-webpackReadyReadyPreviewAug 21, 2026 6:21am
example-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-astro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-express-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-fastify-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-hono-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nestjs-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nitro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nuxt-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-python-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-sveltekit-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-tanstack-start-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-vite-workflowReadyReadyPreviewAug 21, 2026 6:21am
workflow-docsReadyReadyPreview, v0Aug 21, 2026 6:21am
workflow-swc-playgroundReadyReadyPreviewAug 21, 2026 6:21am
workflow-tarballsReadyReadyPreviewAug 21, 2026 6:21am
workflow-webReadyReadyPreviewAug 21, 2026 6:21am
@github-actions
github-actionsBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
📊 Workflow Benchmarks
commit 4f2b4f6 · Fri, 21 Aug 2026 06:38:33 GMT · run logs
Backend: vercel · app: nextjs-turbopack
MetricScenarioBest (ms)P75 (ms)P90 (ms)P99 (ms)Samples
TTFSstep287 (-58%) 💚1302 🔴 (+26%) 🔻1329 🔴 (+20%) 🔻1505 🔴 (±0%)30
TTFSstream1196 (+335%) 🔻1275 🔴 (+17%) 🔻1291 🔴 (+18%) 🔻1304 🔴 (+15%)30
TTFShook + stream1459 (+14%)1577 🔴 (+10%)1644 🔴 (-1.1%)1863 🔴 (-60%) 💚30
Fan-out TTFSPromise.all(100 steps)550 (+26%) 🔻857 (+38%) 🔻872 (+30%) 🔻2012 (+2.8%)10
Fan-out TTLSPromise.all(100 steps)4653 (+6.1%)7332 (-2.2%)9518 (+24%) 🔻11255 (+28%) 🔻10
STSO1020 steps (inline)115 (-9.4%)197 (-19%) 💚249 (-13%)346 (-24%) 💚1019
WO1020 steps178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚1
CRTTfirst chunk (pooled)85 (-3.4%)142 (+10%)179 (+19%) 🔻316 (-22%) 💚28
Streams
ScenarioCRTT 1stp75p90p99CDV maxiters
paced control (100/s, 60B)114 (+7%)117 (-5%)141 (-33%)257 (-49%)105 (-17%)10
size sweep (100/s, 160B-12KB)105 (+1%)117 (-11%)134 (-39%)278 (-48%)95.5 (-42%)10
replay gateway-gpt-5.4-nano-2000t (1x)178 (+31%)127 (-7%)340 (+67%)898 (+62%)143 (-1%)3
replay eve-gpt-5.6-sol-2000t (1x)134 (-47%)107 (-57%)138 (-90%)284 (-94%)417 (-82%)2
replay eve-gpt-5.6-sol-2000t (2x)139 (-7%)154 (-13%)226 (-28%)1058 (+9%)592 (+2%)3
📈 STSO distribution vs main (inline / queue-hop histograms)
1020 steps (inline)
Cumulative STSO time: main 231540ms → this run 177014ms (Δ -54526ms, -24%)
100-150 ms █░░░░░░░░░░░░░░░░░░░░░░┃ main 6 this 499 +493
150-200 ms ████████████┃████ main 344 this 271 -73
200-250 ms ██████┃███████████████ main 451 this 149 -302
250-300 ms ██┃████ main 144 this 66 -78
300-350 ms ┃█ main 45 this 24 -21
350-400 ms ┃ main 7 this 3 -4
400-450 ms ┃ main 10 this 1 -9
450-500 ms ┃ main 5 this 1 -4
500-550 ms ┃ main 1 this 2 +1
550-600 ms ┃ main 2 this 1 -1
600-650 ms ┃ main 1 this 1 +0
650-700 ms ┃ main 0 this 1 +1
700-750 ms ┃ main 2 this 0 -2
800-850 ms ┃ main 1 this 0 -1

📈 CRTT drill-down vs main (RTT distributions & profiles)
variant RTT 1ms→5s+ avg p50 p90 p99 n
control ······█▇▁···· 100.3 (-9%) 94 (-4%) 141 (-33%) 257 (-49%) 3000
sweep ······█▇▁···· 99.6 (-16%) 95 (-9%) 134 (-39%) 278 (-48%) 3000
gw 1x ·····▁█▇▁▁▁·· 118.6 (+6%) 98 (-1%) 340 (+67%) 898 (+62%) 5295
eve 1x ·····▁█▅▁▁··· 95.4 (-70%) 87 (-16%) 138 (-90%) 284 (-94%) 5186
eve 2x ·····▁▆█▂▁▁·· 135.3 (-12%) 109 (-14%) 226 (-28%) 1058 (+9%) 7779

RTT over stream progress (avg per tenth of stream, bars scaled min→max):
control █▃▃▄▆▃▄▂▃▁ 91–115ms
sweep █▄▃▃▃▃▁▃▄▂ 90–118ms
gw 1x ▅▃▁█▁▂▃▂▁▁ 94–200ms
eve 1x █▂▄▃▂▃▆▅▄▁ 79–121ms
eve 2x ▂▄█▂▁▂▃▃▂▂ 97–245ms

RTT by chunk size (avg per log size bin, ~160B → ~12KB serialized, bars scaled min→max):
sweep █▇▆▆▄▁▃ 97–102ms

Delivery jitter over stream progress (avg positive CDV per tenth of stream, bars scaled min→max):
control ▃▄▆██▁█▃▄▂ 26–33ms
sweep ▅▄▆█▆▇▃▂▇▁ 37–45ms
gw 1x █▄▁▃▂▂▄▁▁▁ 29–40ms
eve 1x ▇▁▃▁▄▄█▄█▇ 17–23ms
eve 2x ▃▇█▂▄▇▁▃▂▆ 19–24ms

ℹ️ Metric definitions & methodology
Streams: first-chunk RTT (the stream-open path, before any buffering/backpressure), CRTT percentiles, and worst delivery stall (CDV max). Cells are medians across iterations; per-run values in the artifacts. No 🔴/🟢 marks until targets attach.
The collapsed STSO distribution section above buckets every step gap, split inline (same warm process — pure framework overhead) vs queue-hop (fresh process — dispatch, reinit, replay). █ = main, ┃ = this run, ░ = fill.
The collapsed CRTT drill-down: per-variant RTT histograms (fixed log bins, · = empty) and mean RTT/positive-CDV profile lines over stream progress and chunk size. Histograms, avgs, and profiles merge exactly across runs; p50–p99 are percentile-of-percentiles. Per-index rows live in the artifacts.
Best/P75/P90/P99 deltas compare against the most recent benchmark run on main at the time of this run. 🔻 flags a delta worse than +15%, 💚 one better than −15%.
Metrics — TTFS: time to first step body (in-deployment start() → first step body) · Fan-out TTFS: fan-out time to first step (in-deployment start() → first of the parallel step bodies to complete) · Fan-out TTLS: fan-out time to last step (in-deployment start() → last of the parallel step bodies to complete, i.e. when the Promise.all resolves) · STSO: step-to-step overhead (gap between consecutive step bodies) · WO: workflow overhead (whole-run time outside step bodies, in-deployment anchored) · CRTT: chunk round-trip time (per-chunk write → read latency, one clock domain: deployment → stream backend → same deployment) · CDV: chunk delay variation / delivery jitter (inter-arrival gap minus inter-write gap per seq-adjacent pair; skew-free; the row is each run's MAX positive value, so one stall moves it)
Scenarios — step: one trivial no-op step, no stream; no hooks, so the run stays in turbo mode (in-process fast path) · stream: one streaming step; no hooks, so the run stays in turbo mode (in-process fast path) · hook + stream: registers a hook before one step, which exits turbo mode (dispatch path) · 1020 steps: 1020 trivial sequential steps; STSO is measured between consecutive steps in the given step ranges, and WO is the whole-run overhead outside step bodies · Promise.all(100 steps): 100 trivial no-op steps started together in a single Promise.all; Fan-out TTFS is the first of them to complete and Fan-out TTLS the last, both from the in-deployment clientStart, so their gap is the spread the runtime adds across the fan-out · paced control (100/s, 60B): the control: 300 tiny (~60B) deltas metronome-paced at 100/s — zero workload structure, so it reads the transport floor and flush cadence, and disambiguates transport-wide vs workload-specific when a replay row moves · size sweep (100/s, 160B-12KB): same pacing as the control with deltas padded in rotation across seven log-spaced sizes (~160B–12KB) — rotation decouples size from stream position, so it isolates whether chunk size causes latency · replay gateway-gpt-5.4-nano-2000t (1x): raw provider SSE cadence captured at the AI gateway boundary (gpt-5.4-nano, the most popular gateway model; per-token deltas p50 208B = the modal production chunk size), replayed exactly as measured — the typical customer's workload; its CDV is the typical customer's real delivery jitter · replay eve-gpt-5.6-sol-2000t (1x): a captured eve turn (gpt-5.6-sol, the most-used demanding eve model; ~2000 output tokens = production p50 turn length) replayed exactly as measured — eve's envelope protocol re-ships the cumulative message so sizes ramp 142B→13KB; the demanding outlier tenant's reality · replay eve-gpt-5.6-sol-2000t (2x): the same eve capture at 2x — the headroom/stress row; real fast-tier models emit the same chunk sizes at proportionally higher rate, so time compression is a faithful speed model · first chunk (pooled): every run's seq-0 RTT pooled across all stream scenarios — the first chunk precedes any workload differentiation, so pooling samples one shared stream-open path with exact percentiles
Replay cadences (semantic sha256) — eve-gpt-5.6-sol-2000teaf22f5946e7c61f3c65c7006d550df180cfabd4e706254a09f22aec0cfb420d · gateway-gpt-5.4-nano-2000t6f24ac518b6b83ff1d0e85a5fe78230db192716d66a7fc6b2fe022752001d041
🔴 marks a percentile over its target (within target is left unmarked). Targets (p75/p90/p99, ms) — TTFS 200/300/600
All timestamps are deployment-side; runs are triggered in-deployment, so the CI runner and api.vercel.com sit outside every measured window. TTFS = start() → first step body (includes dispatch + any cold start); Fan-out TTFS/TTLS = first/last step completion of one Promise.all from the same anchor (the gap is the runtime’s fan-out spread); STSO/WO between step bodies; CRTT inside the workflow (excludes the api.vercel.com read path).
Cold starts stay in the numbers (real bursty-workload latency, inflates P75+); Best is the warm floor.
@github-actions
github-actionsBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
🧪 E2E Test Results
❌ Some tests failed
❌ Failed E2E Tests
▲ Vercel Production (225 failed)
astro-node (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
astro-quickjs (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
example-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
example-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
express-node (5 failed):
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
express-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
fastify-node (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
fastify-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
hono-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
hono-quickjs (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
nest-node (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nest-quickjs (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-turbopack-node (2 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
nextjs-turbopack-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-webpack-node (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-webpack-quickjs (7 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nitro-node (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nitro-quickjs (10 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nuxt-node (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nuxt-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
sveltekit-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
sveltekit-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
tanstack-start-node (6 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
tanstack-start-quickjs (7 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
vite-node (5 failed):
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
vite-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
🐘 Local Postgres (1 failed)
vite-stable-quickjs (1 failed):
  • cancelRun via CLI - cancelling a running workflow | wrun_41M0HG37470GZP18JM4XZQH2Y9
⚠️ Flaky E2E Tests (passed on retry)
These tests failed at least once and passed on a retry. A recurring entry here is a real race worth investigating.
28 flaky tests
  • cancelRun via CLI - cancelling a running workflow (hono)
  • cancelRun via CLI - cancelling a running workflow (nextjs-turbopack)
  • cancelRun via CLI - cancelling a running workflow (vite)
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously (example)
  • cross-file step error preserves message and function names in stack (astro)
  • fire-and-forget: void setAttributes lands without awaiting (nextjs-turbopack)
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data (nextjs-webpack)
  • hookCleanupTestWorkflow - hook token reuse after workflow completion (vite)
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps (nextjs-webpack)
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered (nextjs-webpack)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (express)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (sveltekit)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (tanstack-start)
  • Promise.all of disjoint-key writes: every key lands (fastify)
  • Promise.all of disjoint-key writes: every key lands (hono)
  • Promise.all of disjoint-key writes: every key lands (nuxt)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (astro)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (vite)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (example)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (hono)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (nextjs-turbopack)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (sveltekit)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (vite)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (fastify)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (hono)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nest)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nextjs-webpack)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nitro)
🛠 Infra Events (absorbed by the harness)
Platform anomalies the e2e harness detected and worked around (e.g. a run the queue never picked up, replaced by a fresh run). Clustered timestamps indicate a backend blip; a steady drip indicates a platform issue worth escalating.
  • run-pickup-stall · Calculator.calculate - static workflow method using static step methods from another class (tanstack-start) · at 06:24:33Z · abandoned wrun_01M0HFVR2VDKZ1S5XAYGFR2TZF
E2E Test Summary
Summary
PassedFailedSkippedTotal
❌ ▲ Vercel Production33532257424320
✅ 💻 Local Development392205584480
✅ 📦 Local Production392205584480
❌ 🐘 Local Postgres392115584480
✅ 🪟 Windows16000160
✅ 🌐 Cross-language Conformance90132141
✅ vercel-multi-region270027
Total15314226254818088
Details by Category
❌ ▲ Vercel Production
AppPassedFailedSkipped
❌ astro-node123928
❌ astro-quickjs123928
❌ example-node124828
❌ example-quickjs1211128
❌ express-node127528
❌ express-quickjs1211128
❌ fastify-node123928
❌ fastify-quickjs1211128
❌ hono-node124828
❌ hono-quickjs124828
❌ nest-node1211128
❌ nest-quickjs124828
❌ nextjs-turbopack-node15523
❌ nextjs-turbopack-quickjs147103
❌ nextjs-webpack-node147103
❌ nextjs-webpack-quickjs15073
❌ nitro-node1221028
❌ nitro-quickjs1221028
❌ nuxt-node1211128
❌ nuxt-quickjs1221028
✅ python-node80152
❌ sveltekit-node14389
❌ sveltekit-quickjs141109
❌ tanstack-start-node126628
❌ tanstack-start-quickjs125728
❌ vite-node127528
❌ vite-quickjs1211128
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026
❌ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
❌ vite-stable-quickjs133126
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack-quickjs16000
✅ 🌐 Cross-language Conformance
AppPassedFailedSkipped
✅ python90132
✅ vercel-multi-region
AppPassedFailedSkipped
✅ nextjs-turbopack2700
📋 View full workflow run
@github-actions
github-actionsBot
commented
Aug 21, 2026

Copy link


Copy Markdown

Contributor
Sim World
Simulated world deterministic testing for races. Traces
🟠 world-sim scenario book — 1 fail of 41 total
fence=per-spec
scenariooutcomeeventsvirtreplayviolations
✅ smoke-no-stepscompleted30msok0
✅ smoke-one-stepcompleted60msok0
✅ hook-at-step-startedcompleted120msok0
✅ hook-at-step-completedcompleted120msok0
✅ hook-at-hook-createdcompleted120msok0
✅ deadline-hook-winscompleted71.0hok0
✅ deadline-expirescompleted71.0hok0
✅ long-sleepcompleted1130.0dok0
✅ hook-never-arrivesstalled30msskipped0
✅ step-retries-twicecompleted102.0sok0
✅ parallel-stepscompleted90msok0
✅ hook-on-execution-statecompleted120msok0
✅ peek-hook-before-branchcompleted120msok0
✅ peek-hook-after-branchcompleted120msok0
✅ peek-hook-at-registrationcompleted120msok0
✅ race-hook-before-probecompleted120msok0
✅ race-hook-after-probecompleted120msok0
✅ race-duplicate-deliverycompleted130msok0
✅ attr-hook-before-stepcompleted110msok0
✅ attr-hook-after-stepcompleted110msok0
✅ attr-from-step-bodycompleted130msok0
✅ fork-hook-after-timeoutcompleted141.0mok0
✅ fork-hook-before-timeoutcompleted141.0mok0
✅ count-hook-after-timeoutcompleted171.0mok0
✅ count-hook-before-timeoutcompleted201.0mok0
✅ stale-read-step-count-forkcompleted201.0mok0
✅ stale-read-equal-step-countscompleted141.0mok0
✅ step-vs-step-forkcompleted120msok0
✅ step-vs-step-fork-fencedcompleted120msok0
✅ fence-catches-benign-directioncompleted125msok0
✅ in-flight-before-decisioncompleted171.0mok0
❌ in-flight-before-decision-countedcompleted171.0mok0
✅ in-flight-after-decisioncompleted192.0mok0
✅ stale-read-step-count-fork-fencedcompleted201.0mok0
✅ fork-hook-winscompleted131.0mok0
✅ fork-timeout-winscompleted131.0mok0
✅ unclaimed-payload-under-forkcompleted171.0mok0
✅ claimed-payload-under-forkcompleted171.0mok0
✅ writers-independent-step-bodiescompleted120msok0
✅ writers-scripted-tempocompleted120msok0
✅ cancel-mid-stepcancelled70msskipped0
Full trace: world-sim.txt
@VaguelySeriousVaguelySerious
mentioned this pull request
Aug 21, 2026
 Merged

Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


No reviews


Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

1 participant

@shalabhc

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
[world-vercel] Isolate run-status long polls - #3709
Draft
shalabhc wants to merge 1 commit into
mainfrom 
deflake
Draft
[world-vercel] Isolate run-status long polls#3709
shalabhc wants to merge 1 commit into
mainfrom 
deflake
Conversation
@shalabhc
@shalabhcshalabhc
commented
Aug 21, 2026

Copy link


Copy Markdown

Collaborator
Summary
  • route held run-status requests through a dedicated connection pool
  • keep ordinary workflow-server traffic available while concurrent run.returnValue waits are open
  • apply the same isolation to the optional node:http transport and preserve explicit dispatcher overrides
Why
Main run 32413467237 failed 29 Vercel E2E lanes after #3570 enabled run-status long polling. Local, Postgres, Windows, and Python lanes stayed green.
The default world-vercel HTTP/1.1 agent has 8 connections. Concurrent E2E lanes peaked at 6-8 tests, and each run.returnValue can hold a status request for 50 seconds. Those waits consumed the default pool, starving the ordinary reads and hook/control calls needed for runs to complete. Failure artifacts consequently contain broad 30s/60s timeouts across unrelated tests and frameworks.
Test plan
  • pnpm --filter @workflow/world-vercel test (550 passed)
  • pnpm vitest run packages/core/src/runtime/run-return-value-long-poll.test.ts (17 passed)
  • pnpm turbo run typecheck --filter=@workflow/world-vercel
  • pnpm biome check packages/world-vercel/src/http-client.ts packages/world-vercel/src/utils.ts packages/world-vercel/src/runs.ts packages/world-vercel/src/http-client.test.ts .changeset/run-status-pool-isolation.md (no errors; existing makeRequest complexity warning only)
@vercel@shalabhc
[world-vercel] Isolate run-status long polls
4f2b4f6
Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>
@changeset-bot
changeset-botBot
commented
Aug 21, 2026

Copy link


Copy Markdown

🦋 Changeset detected
Latest commit: 4f2b4f6
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 17 packages
NameType
@workflow/world-vercelPatch
@workflow/cliPatch
@workflow/corePatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@vercel
vercelBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
The latest updates on your projects. Learn more about Vercel for GitHub.
ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreviewAug 21, 2026 6:21am
example-nextjs-workflow-webpackReadyReadyPreviewAug 21, 2026 6:21am
example-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-astro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-express-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-fastify-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-hono-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nestjs-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nitro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nuxt-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-python-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-sveltekit-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-tanstack-start-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-vite-workflowReadyReadyPreviewAug 21, 2026 6:21am
workflow-docsReadyReadyPreview, v0Aug 21, 2026 6:21am
workflow-swc-playgroundReadyReadyPreviewAug 21, 2026 6:21am
workflow-tarballsReadyReadyPreviewAug 21, 2026 6:21am
workflow-webReadyReadyPreviewAug 21, 2026 6:21am
@github-actions
github-actionsBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
📊 Workflow Benchmarks
commit 4f2b4f6 · Fri, 21 Aug 2026 06:38:33 GMT · run logs
Backend: vercel · app: nextjs-turbopack
MetricScenarioBest (ms)P75 (ms)P90 (ms)P99 (ms)Samples
TTFSstep287 (-58%) 💚1302 🔴 (+26%) 🔻1329 🔴 (+20%) 🔻1505 🔴 (±0%)30
TTFSstream1196 (+335%) 🔻1275 🔴 (+17%) 🔻1291 🔴 (+18%) 🔻1304 🔴 (+15%)30
TTFShook + stream1459 (+14%)1577 🔴 (+10%)1644 🔴 (-1.1%)1863 🔴 (-60%) 💚30
Fan-out TTFSPromise.all(100 steps)550 (+26%) 🔻857 (+38%) 🔻872 (+30%) 🔻2012 (+2.8%)10
Fan-out TTLSPromise.all(100 steps)4653 (+6.1%)7332 (-2.2%)9518 (+24%) 🔻11255 (+28%) 🔻10
STSO1020 steps (inline)115 (-9.4%)197 (-19%) 💚249 (-13%)346 (-24%) 💚1019
WO1020 steps178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚1
CRTTfirst chunk (pooled)85 (-3.4%)142 (+10%)179 (+19%) 🔻316 (-22%) 💚28
Streams
ScenarioCRTT 1stp75p90p99CDV maxiters
paced control (100/s, 60B)114 (+7%)117 (-5%)141 (-33%)257 (-49%)105 (-17%)10
size sweep (100/s, 160B-12KB)105 (+1%)117 (-11%)134 (-39%)278 (-48%)95.5 (-42%)10
replay gateway-gpt-5.4-nano-2000t (1x)178 (+31%)127 (-7%)340 (+67%)898 (+62%)143 (-1%)3
replay eve-gpt-5.6-sol-2000t (1x)134 (-47%)107 (-57%)138 (-90%)284 (-94%)417 (-82%)2
replay eve-gpt-5.6-sol-2000t (2x)139 (-7%)154 (-13%)226 (-28%)1058 (+9%)592 (+2%)3
📈 STSO distribution vs main (inline / queue-hop histograms)
1020 steps (inline)
Cumulative STSO time: main 231540ms → this run 177014ms (Δ -54526ms, -24%)
100-150 ms █░░░░░░░░░░░░░░░░░░░░░░┃ main 6 this 499 +493
150-200 ms ████████████┃████ main 344 this 271 -73
200-250 ms ██████┃███████████████ main 451 this 149 -302
250-300 ms ██┃████ main 144 this 66 -78
300-350 ms ┃█ main 45 this 24 -21
350-400 ms ┃ main 7 this 3 -4
400-450 ms ┃ main 10 this 1 -9
450-500 ms ┃ main 5 this 1 -4
500-550 ms ┃ main 1 this 2 +1
550-600 ms ┃ main 2 this 1 -1
600-650 ms ┃ main 1 this 1 +0
650-700 ms ┃ main 0 this 1 +1
700-750 ms ┃ main 2 this 0 -2
800-850 ms ┃ main 1 this 0 -1

📈 CRTT drill-down vs main (RTT distributions & profiles)
variant RTT 1ms→5s+ avg p50 p90 p99 n
control ······█▇▁···· 100.3 (-9%) 94 (-4%) 141 (-33%) 257 (-49%) 3000
sweep ······█▇▁···· 99.6 (-16%) 95 (-9%) 134 (-39%) 278 (-48%) 3000
gw 1x ·····▁█▇▁▁▁·· 118.6 (+6%) 98 (-1%) 340 (+67%) 898 (+62%) 5295
eve 1x ·····▁█▅▁▁··· 95.4 (-70%) 87 (-16%) 138 (-90%) 284 (-94%) 5186
eve 2x ·····▁▆█▂▁▁·· 135.3 (-12%) 109 (-14%) 226 (-28%) 1058 (+9%) 7779

RTT over stream progress (avg per tenth of stream, bars scaled min→max):
control █▃▃▄▆▃▄▂▃▁ 91–115ms
sweep █▄▃▃▃▃▁▃▄▂ 90–118ms
gw 1x ▅▃▁█▁▂▃▂▁▁ 94–200ms
eve 1x █▂▄▃▂▃▆▅▄▁ 79–121ms
eve 2x ▂▄█▂▁▂▃▃▂▂ 97–245ms

RTT by chunk size (avg per log size bin, ~160B → ~12KB serialized, bars scaled min→max):
sweep █▇▆▆▄▁▃ 97–102ms

Delivery jitter over stream progress (avg positive CDV per tenth of stream, bars scaled min→max):
control ▃▄▆██▁█▃▄▂ 26–33ms
sweep ▅▄▆█▆▇▃▂▇▁ 37–45ms
gw 1x █▄▁▃▂▂▄▁▁▁ 29–40ms
eve 1x ▇▁▃▁▄▄█▄█▇ 17–23ms
eve 2x ▃▇█▂▄▇▁▃▂▆ 19–24ms

ℹ️ Metric definitions & methodology
Streams: first-chunk RTT (the stream-open path, before any buffering/backpressure), CRTT percentiles, and worst delivery stall (CDV max). Cells are medians across iterations; per-run values in the artifacts. No 🔴/🟢 marks until targets attach.
The collapsed STSO distribution section above buckets every step gap, split inline (same warm process — pure framework overhead) vs queue-hop (fresh process — dispatch, reinit, replay). █ = main, ┃ = this run, ░ = fill.
The collapsed CRTT drill-down: per-variant RTT histograms (fixed log bins, · = empty) and mean RTT/positive-CDV profile lines over stream progress and chunk size. Histograms, avgs, and profiles merge exactly across runs; p50–p99 are percentile-of-percentiles. Per-index rows live in the artifacts.
Best/P75/P90/P99 deltas compare against the most recent benchmark run on main at the time of this run. 🔻 flags a delta worse than +15%, 💚 one better than −15%.
Metrics — TTFS: time to first step body (in-deployment start() → first step body) · Fan-out TTFS: fan-out time to first step (in-deployment start() → first of the parallel step bodies to complete) · Fan-out TTLS: fan-out time to last step (in-deployment start() → last of the parallel step bodies to complete, i.e. when the Promise.all resolves) · STSO: step-to-step overhead (gap between consecutive step bodies) · WO: workflow overhead (whole-run time outside step bodies, in-deployment anchored) · CRTT: chunk round-trip time (per-chunk write → read latency, one clock domain: deployment → stream backend → same deployment) · CDV: chunk delay variation / delivery jitter (inter-arrival gap minus inter-write gap per seq-adjacent pair; skew-free; the row is each run's MAX positive value, so one stall moves it)
Scenarios — step: one trivial no-op step, no stream; no hooks, so the run stays in turbo mode (in-process fast path) · stream: one streaming step; no hooks, so the run stays in turbo mode (in-process fast path) · hook + stream: registers a hook before one step, which exits turbo mode (dispatch path) · 1020 steps: 1020 trivial sequential steps; STSO is measured between consecutive steps in the given step ranges, and WO is the whole-run overhead outside step bodies · Promise.all(100 steps): 100 trivial no-op steps started together in a single Promise.all; Fan-out TTFS is the first of them to complete and Fan-out TTLS the last, both from the in-deployment clientStart, so their gap is the spread the runtime adds across the fan-out · paced control (100/s, 60B): the control: 300 tiny (~60B) deltas metronome-paced at 100/s — zero workload structure, so it reads the transport floor and flush cadence, and disambiguates transport-wide vs workload-specific when a replay row moves · size sweep (100/s, 160B-12KB): same pacing as the control with deltas padded in rotation across seven log-spaced sizes (~160B–12KB) — rotation decouples size from stream position, so it isolates whether chunk size causes latency · replay gateway-gpt-5.4-nano-2000t (1x): raw provider SSE cadence captured at the AI gateway boundary (gpt-5.4-nano, the most popular gateway model; per-token deltas p50 208B = the modal production chunk size), replayed exactly as measured — the typical customer's workload; its CDV is the typical customer's real delivery jitter · replay eve-gpt-5.6-sol-2000t (1x): a captured eve turn (gpt-5.6-sol, the most-used demanding eve model; ~2000 output tokens = production p50 turn length) replayed exactly as measured — eve's envelope protocol re-ships the cumulative message so sizes ramp 142B→13KB; the demanding outlier tenant's reality · replay eve-gpt-5.6-sol-2000t (2x): the same eve capture at 2x — the headroom/stress row; real fast-tier models emit the same chunk sizes at proportionally higher rate, so time compression is a faithful speed model · first chunk (pooled): every run's seq-0 RTT pooled across all stream scenarios — the first chunk precedes any workload differentiation, so pooling samples one shared stream-open path with exact percentiles
Replay cadences (semantic sha256) — eve-gpt-5.6-sol-2000teaf22f5946e7c61f3c65c7006d550df180cfabd4e706254a09f22aec0cfb420d · gateway-gpt-5.4-nano-2000t6f24ac518b6b83ff1d0e85a5fe78230db192716d66a7fc6b2fe022752001d041
🔴 marks a percentile over its target (within target is left unmarked). Targets (p75/p90/p99, ms) — TTFS 200/300/600
All timestamps are deployment-side; runs are triggered in-deployment, so the CI runner and api.vercel.com sit outside every measured window. TTFS = start() → first step body (includes dispatch + any cold start); Fan-out TTFS/TTLS = first/last step completion of one Promise.all from the same anchor (the gap is the runtime’s fan-out spread); STSO/WO between step bodies; CRTT inside the workflow (excludes the api.vercel.com read path).
Cold starts stay in the numbers (real bursty-workload latency, inflates P75+); Best is the warm floor.
@github-actions
github-actionsBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
🧪 E2E Test Results
❌ Some tests failed
❌ Failed E2E Tests
▲ Vercel Production (225 failed)
astro-node (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
astro-quickjs (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
example-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
example-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
express-node (5 failed):
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
express-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
fastify-node (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
fastify-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
hono-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
hono-quickjs (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
nest-node (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nest-quickjs (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-turbopack-node (2 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
nextjs-turbopack-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-webpack-node (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-webpack-quickjs (7 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nitro-node (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nitro-quickjs (10 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nuxt-node (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nuxt-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
sveltekit-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
sveltekit-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
tanstack-start-node (6 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
tanstack-start-quickjs (7 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
vite-node (5 failed):
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
vite-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
🐘 Local Postgres (1 failed)
vite-stable-quickjs (1 failed):
  • cancelRun via CLI - cancelling a running workflow | wrun_41M0HG37470GZP18JM4XZQH2Y9
⚠️ Flaky E2E Tests (passed on retry)
These tests failed at least once and passed on a retry. A recurring entry here is a real race worth investigating.
28 flaky tests
  • cancelRun via CLI - cancelling a running workflow (hono)
  • cancelRun via CLI - cancelling a running workflow (nextjs-turbopack)
  • cancelRun via CLI - cancelling a running workflow (vite)
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously (example)
  • cross-file step error preserves message and function names in stack (astro)
  • fire-and-forget: void setAttributes lands without awaiting (nextjs-turbopack)
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data (nextjs-webpack)
  • hookCleanupTestWorkflow - hook token reuse after workflow completion (vite)
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps (nextjs-webpack)
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered (nextjs-webpack)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (express)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (sveltekit)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (tanstack-start)
  • Promise.all of disjoint-key writes: every key lands (fastify)
  • Promise.all of disjoint-key writes: every key lands (hono)
  • Promise.all of disjoint-key writes: every key lands (nuxt)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (astro)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (vite)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (example)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (hono)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (nextjs-turbopack)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (sveltekit)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (vite)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (fastify)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (hono)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nest)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nextjs-webpack)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nitro)
🛠 Infra Events (absorbed by the harness)
Platform anomalies the e2e harness detected and worked around (e.g. a run the queue never picked up, replaced by a fresh run). Clustered timestamps indicate a backend blip; a steady drip indicates a platform issue worth escalating.
  • run-pickup-stall · Calculator.calculate - static workflow method using static step methods from another class (tanstack-start) · at 06:24:33Z · abandoned wrun_01M0HFVR2VDKZ1S5XAYGFR2TZF
E2E Test Summary
Summary
PassedFailedSkippedTotal
❌ ▲ Vercel Production33532257424320
✅ 💻 Local Development392205584480
✅ 📦 Local Production392205584480
❌ 🐘 Local Postgres392115584480
✅ 🪟 Windows16000160
✅ 🌐 Cross-language Conformance90132141
✅ vercel-multi-region270027
Total15314226254818088
Details by Category
❌ ▲ Vercel Production
AppPassedFailedSkipped
❌ astro-node123928
❌ astro-quickjs123928
❌ example-node124828
❌ example-quickjs1211128
❌ express-node127528
❌ express-quickjs1211128
❌ fastify-node123928
❌ fastify-quickjs1211128
❌ hono-node124828
❌ hono-quickjs124828
❌ nest-node1211128
❌ nest-quickjs124828
❌ nextjs-turbopack-node15523
❌ nextjs-turbopack-quickjs147103
❌ nextjs-webpack-node147103
❌ nextjs-webpack-quickjs15073
❌ nitro-node1221028
❌ nitro-quickjs1221028
❌ nuxt-node1211128
❌ nuxt-quickjs1221028
✅ python-node80152
❌ sveltekit-node14389
❌ sveltekit-quickjs141109
❌ tanstack-start-node126628
❌ tanstack-start-quickjs125728
❌ vite-node127528
❌ vite-quickjs1211128
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026
❌ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
❌ vite-stable-quickjs133126
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack-quickjs16000
✅ 🌐 Cross-language Conformance
AppPassedFailedSkipped
✅ python90132
✅ vercel-multi-region
AppPassedFailedSkipped
✅ nextjs-turbopack2700
📋 View full workflow run
@github-actions
github-actionsBot
commented
Aug 21, 2026

Copy link


Copy Markdown

Contributor
Sim World
Simulated world deterministic testing for races. Traces
🟠 world-sim scenario book — 1 fail of 41 total
fence=per-spec
scenariooutcomeeventsvirtreplayviolations
✅ smoke-no-stepscompleted30msok0
✅ smoke-one-stepcompleted60msok0
✅ hook-at-step-startedcompleted120msok0
✅ hook-at-step-completedcompleted120msok0
✅ hook-at-hook-createdcompleted120msok0
✅ deadline-hook-winscompleted71.0hok0
✅ deadline-expirescompleted71.0hok0
✅ long-sleepcompleted1130.0dok0
✅ hook-never-arrivesstalled30msskipped0
✅ step-retries-twicecompleted102.0sok0
✅ parallel-stepscompleted90msok0
✅ hook-on-execution-statecompleted120msok0
✅ peek-hook-before-branchcompleted120msok0
✅ peek-hook-after-branchcompleted120msok0
✅ peek-hook-at-registrationcompleted120msok0
✅ race-hook-before-probecompleted120msok0
✅ race-hook-after-probecompleted120msok0
✅ race-duplicate-deliverycompleted130msok0
✅ attr-hook-before-stepcompleted110msok0
✅ attr-hook-after-stepcompleted110msok0
✅ attr-from-step-bodycompleted130msok0
✅ fork-hook-after-timeoutcompleted141.0mok0
✅ fork-hook-before-timeoutcompleted141.0mok0
✅ count-hook-after-timeoutcompleted171.0mok0
✅ count-hook-before-timeoutcompleted201.0mok0
✅ stale-read-step-count-forkcompleted201.0mok0
✅ stale-read-equal-step-countscompleted141.0mok0
✅ step-vs-step-forkcompleted120msok0
✅ step-vs-step-fork-fencedcompleted120msok0
✅ fence-catches-benign-directioncompleted125msok0
✅ in-flight-before-decisioncompleted171.0mok0
❌ in-flight-before-decision-countedcompleted171.0mok0
✅ in-flight-after-decisioncompleted192.0mok0
✅ stale-read-step-count-fork-fencedcompleted201.0mok0
✅ fork-hook-winscompleted131.0mok0
✅ fork-timeout-winscompleted131.0mok0
✅ unclaimed-payload-under-forkcompleted171.0mok0
✅ claimed-payload-under-forkcompleted171.0mok0
✅ writers-independent-step-bodiescompleted120msok0
✅ writers-scripted-tempocompleted120msok0
✅ cancel-mid-stepcancelled70msskipped0
Full trace: world-sim.txt
@VaguelySeriousVaguelySerious
mentioned this pull request
Aug 21, 2026
 Merged

Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


No reviews


Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

1 participant

@shalabhc

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
[world-vercel] Isolate run-status long polls - #3709
Draft
shalabhc wants to merge 1 commit into
mainfrom 
deflake
Draft
[world-vercel] Isolate run-status long polls#3709
shalabhc wants to merge 1 commit into
mainfrom 
deflake
Conversation
@shalabhc
@shalabhcshalabhc
commented
Aug 21, 2026

Copy link


Copy Markdown

Collaborator
Summary
  • route held run-status requests through a dedicated connection pool
  • keep ordinary workflow-server traffic available while concurrent run.returnValue waits are open
  • apply the same isolation to the optional node:http transport and preserve explicit dispatcher overrides
Why
Main run 32413467237 failed 29 Vercel E2E lanes after #3570 enabled run-status long polling. Local, Postgres, Windows, and Python lanes stayed green.
The default world-vercel HTTP/1.1 agent has 8 connections. Concurrent E2E lanes peaked at 6-8 tests, and each run.returnValue can hold a status request for 50 seconds. Those waits consumed the default pool, starving the ordinary reads and hook/control calls needed for runs to complete. Failure artifacts consequently contain broad 30s/60s timeouts across unrelated tests and frameworks.
Test plan
  • pnpm --filter @workflow/world-vercel test (550 passed)
  • pnpm vitest run packages/core/src/runtime/run-return-value-long-poll.test.ts (17 passed)
  • pnpm turbo run typecheck --filter=@workflow/world-vercel
  • pnpm biome check packages/world-vercel/src/http-client.ts packages/world-vercel/src/utils.ts packages/world-vercel/src/runs.ts packages/world-vercel/src/http-client.test.ts .changeset/run-status-pool-isolation.md (no errors; existing makeRequest complexity warning only)
@vercel@shalabhc
[world-vercel] Isolate run-status long polls
4f2b4f6
Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>
@changeset-bot
changeset-botBot
commented
Aug 21, 2026

Copy link


Copy Markdown

🦋 Changeset detected
Latest commit: 4f2b4f6
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 17 packages
NameType
@workflow/world-vercelPatch
@workflow/cliPatch
@workflow/corePatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@vercel
vercelBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
The latest updates on your projects. Learn more about Vercel for GitHub.
ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreviewAug 21, 2026 6:21am
example-nextjs-workflow-webpackReadyReadyPreviewAug 21, 2026 6:21am
example-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-astro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-express-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-fastify-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-hono-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nestjs-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nitro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nuxt-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-python-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-sveltekit-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-tanstack-start-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-vite-workflowReadyReadyPreviewAug 21, 2026 6:21am
workflow-docsReadyReadyPreview, v0Aug 21, 2026 6:21am
workflow-swc-playgroundReadyReadyPreviewAug 21, 2026 6:21am
workflow-tarballsReadyReadyPreviewAug 21, 2026 6:21am
workflow-webReadyReadyPreviewAug 21, 2026 6:21am
@github-actions
github-actionsBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
📊 Workflow Benchmarks
commit 4f2b4f6 · Fri, 21 Aug 2026 06:38:33 GMT · run logs
Backend: vercel · app: nextjs-turbopack
MetricScenarioBest (ms)P75 (ms)P90 (ms)P99 (ms)Samples
TTFSstep287 (-58%) 💚1302 🔴 (+26%) 🔻1329 🔴 (+20%) 🔻1505 🔴 (±0%)30
TTFSstream1196 (+335%) 🔻1275 🔴 (+17%) 🔻1291 🔴 (+18%) 🔻1304 🔴 (+15%)30
TTFShook + stream1459 (+14%)1577 🔴 (+10%)1644 🔴 (-1.1%)1863 🔴 (-60%) 💚30
Fan-out TTFSPromise.all(100 steps)550 (+26%) 🔻857 (+38%) 🔻872 (+30%) 🔻2012 (+2.8%)10
Fan-out TTLSPromise.all(100 steps)4653 (+6.1%)7332 (-2.2%)9518 (+24%) 🔻11255 (+28%) 🔻10
STSO1020 steps (inline)115 (-9.4%)197 (-19%) 💚249 (-13%)346 (-24%) 💚1019
WO1020 steps178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚1
CRTTfirst chunk (pooled)85 (-3.4%)142 (+10%)179 (+19%) 🔻316 (-22%) 💚28
Streams
ScenarioCRTT 1stp75p90p99CDV maxiters
paced control (100/s, 60B)114 (+7%)117 (-5%)141 (-33%)257 (-49%)105 (-17%)10
size sweep (100/s, 160B-12KB)105 (+1%)117 (-11%)134 (-39%)278 (-48%)95.5 (-42%)10
replay gateway-gpt-5.4-nano-2000t (1x)178 (+31%)127 (-7%)340 (+67%)898 (+62%)143 (-1%)3
replay eve-gpt-5.6-sol-2000t (1x)134 (-47%)107 (-57%)138 (-90%)284 (-94%)417 (-82%)2
replay eve-gpt-5.6-sol-2000t (2x)139 (-7%)154 (-13%)226 (-28%)1058 (+9%)592 (+2%)3
📈 STSO distribution vs main (inline / queue-hop histograms)
1020 steps (inline)
Cumulative STSO time: main 231540ms → this run 177014ms (Δ -54526ms, -24%)
100-150 ms █░░░░░░░░░░░░░░░░░░░░░░┃ main 6 this 499 +493
150-200 ms ████████████┃████ main 344 this 271 -73
200-250 ms ██████┃███████████████ main 451 this 149 -302
250-300 ms ██┃████ main 144 this 66 -78
300-350 ms ┃█ main 45 this 24 -21
350-400 ms ┃ main 7 this 3 -4
400-450 ms ┃ main 10 this 1 -9
450-500 ms ┃ main 5 this 1 -4
500-550 ms ┃ main 1 this 2 +1
550-600 ms ┃ main 2 this 1 -1
600-650 ms ┃ main 1 this 1 +0
650-700 ms ┃ main 0 this 1 +1
700-750 ms ┃ main 2 this 0 -2
800-850 ms ┃ main 1 this 0 -1

📈 CRTT drill-down vs main (RTT distributions & profiles)
variant RTT 1ms→5s+ avg p50 p90 p99 n
control ······█▇▁···· 100.3 (-9%) 94 (-4%) 141 (-33%) 257 (-49%) 3000
sweep ······█▇▁···· 99.6 (-16%) 95 (-9%) 134 (-39%) 278 (-48%) 3000
gw 1x ·····▁█▇▁▁▁·· 118.6 (+6%) 98 (-1%) 340 (+67%) 898 (+62%) 5295
eve 1x ·····▁█▅▁▁··· 95.4 (-70%) 87 (-16%) 138 (-90%) 284 (-94%) 5186
eve 2x ·····▁▆█▂▁▁·· 135.3 (-12%) 109 (-14%) 226 (-28%) 1058 (+9%) 7779

RTT over stream progress (avg per tenth of stream, bars scaled min→max):
control █▃▃▄▆▃▄▂▃▁ 91–115ms
sweep █▄▃▃▃▃▁▃▄▂ 90–118ms
gw 1x ▅▃▁█▁▂▃▂▁▁ 94–200ms
eve 1x █▂▄▃▂▃▆▅▄▁ 79–121ms
eve 2x ▂▄█▂▁▂▃▃▂▂ 97–245ms

RTT by chunk size (avg per log size bin, ~160B → ~12KB serialized, bars scaled min→max):
sweep █▇▆▆▄▁▃ 97–102ms

Delivery jitter over stream progress (avg positive CDV per tenth of stream, bars scaled min→max):
control ▃▄▆██▁█▃▄▂ 26–33ms
sweep ▅▄▆█▆▇▃▂▇▁ 37–45ms
gw 1x █▄▁▃▂▂▄▁▁▁ 29–40ms
eve 1x ▇▁▃▁▄▄█▄█▇ 17–23ms
eve 2x ▃▇█▂▄▇▁▃▂▆ 19–24ms

ℹ️ Metric definitions & methodology
Streams: first-chunk RTT (the stream-open path, before any buffering/backpressure), CRTT percentiles, and worst delivery stall (CDV max). Cells are medians across iterations; per-run values in the artifacts. No 🔴/🟢 marks until targets attach.
The collapsed STSO distribution section above buckets every step gap, split inline (same warm process — pure framework overhead) vs queue-hop (fresh process — dispatch, reinit, replay). █ = main, ┃ = this run, ░ = fill.
The collapsed CRTT drill-down: per-variant RTT histograms (fixed log bins, · = empty) and mean RTT/positive-CDV profile lines over stream progress and chunk size. Histograms, avgs, and profiles merge exactly across runs; p50–p99 are percentile-of-percentiles. Per-index rows live in the artifacts.
Best/P75/P90/P99 deltas compare against the most recent benchmark run on main at the time of this run. 🔻 flags a delta worse than +15%, 💚 one better than −15%.
Metrics — TTFS: time to first step body (in-deployment start() → first step body) · Fan-out TTFS: fan-out time to first step (in-deployment start() → first of the parallel step bodies to complete) · Fan-out TTLS: fan-out time to last step (in-deployment start() → last of the parallel step bodies to complete, i.e. when the Promise.all resolves) · STSO: step-to-step overhead (gap between consecutive step bodies) · WO: workflow overhead (whole-run time outside step bodies, in-deployment anchored) · CRTT: chunk round-trip time (per-chunk write → read latency, one clock domain: deployment → stream backend → same deployment) · CDV: chunk delay variation / delivery jitter (inter-arrival gap minus inter-write gap per seq-adjacent pair; skew-free; the row is each run's MAX positive value, so one stall moves it)
Scenarios — step: one trivial no-op step, no stream; no hooks, so the run stays in turbo mode (in-process fast path) · stream: one streaming step; no hooks, so the run stays in turbo mode (in-process fast path) · hook + stream: registers a hook before one step, which exits turbo mode (dispatch path) · 1020 steps: 1020 trivial sequential steps; STSO is measured between consecutive steps in the given step ranges, and WO is the whole-run overhead outside step bodies · Promise.all(100 steps): 100 trivial no-op steps started together in a single Promise.all; Fan-out TTFS is the first of them to complete and Fan-out TTLS the last, both from the in-deployment clientStart, so their gap is the spread the runtime adds across the fan-out · paced control (100/s, 60B): the control: 300 tiny (~60B) deltas metronome-paced at 100/s — zero workload structure, so it reads the transport floor and flush cadence, and disambiguates transport-wide vs workload-specific when a replay row moves · size sweep (100/s, 160B-12KB): same pacing as the control with deltas padded in rotation across seven log-spaced sizes (~160B–12KB) — rotation decouples size from stream position, so it isolates whether chunk size causes latency · replay gateway-gpt-5.4-nano-2000t (1x): raw provider SSE cadence captured at the AI gateway boundary (gpt-5.4-nano, the most popular gateway model; per-token deltas p50 208B = the modal production chunk size), replayed exactly as measured — the typical customer's workload; its CDV is the typical customer's real delivery jitter · replay eve-gpt-5.6-sol-2000t (1x): a captured eve turn (gpt-5.6-sol, the most-used demanding eve model; ~2000 output tokens = production p50 turn length) replayed exactly as measured — eve's envelope protocol re-ships the cumulative message so sizes ramp 142B→13KB; the demanding outlier tenant's reality · replay eve-gpt-5.6-sol-2000t (2x): the same eve capture at 2x — the headroom/stress row; real fast-tier models emit the same chunk sizes at proportionally higher rate, so time compression is a faithful speed model · first chunk (pooled): every run's seq-0 RTT pooled across all stream scenarios — the first chunk precedes any workload differentiation, so pooling samples one shared stream-open path with exact percentiles
Replay cadences (semantic sha256) — eve-gpt-5.6-sol-2000teaf22f5946e7c61f3c65c7006d550df180cfabd4e706254a09f22aec0cfb420d · gateway-gpt-5.4-nano-2000t6f24ac518b6b83ff1d0e85a5fe78230db192716d66a7fc6b2fe022752001d041
🔴 marks a percentile over its target (within target is left unmarked). Targets (p75/p90/p99, ms) — TTFS 200/300/600
All timestamps are deployment-side; runs are triggered in-deployment, so the CI runner and api.vercel.com sit outside every measured window. TTFS = start() → first step body (includes dispatch + any cold start); Fan-out TTFS/TTLS = first/last step completion of one Promise.all from the same anchor (the gap is the runtime’s fan-out spread); STSO/WO between step bodies; CRTT inside the workflow (excludes the api.vercel.com read path).
Cold starts stay in the numbers (real bursty-workload latency, inflates P75+); Best is the warm floor.
@github-actions
github-actionsBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
🧪 E2E Test Results
❌ Some tests failed
❌ Failed E2E Tests
▲ Vercel Production (225 failed)
astro-node (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
astro-quickjs (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
example-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
example-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
express-node (5 failed):
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
express-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
fastify-node (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
fastify-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
hono-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
hono-quickjs (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
nest-node (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nest-quickjs (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-turbopack-node (2 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
nextjs-turbopack-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-webpack-node (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-webpack-quickjs (7 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nitro-node (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nitro-quickjs (10 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nuxt-node (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nuxt-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
sveltekit-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
sveltekit-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
tanstack-start-node (6 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
tanstack-start-quickjs (7 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
vite-node (5 failed):
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
vite-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
🐘 Local Postgres (1 failed)
vite-stable-quickjs (1 failed):
  • cancelRun via CLI - cancelling a running workflow | wrun_41M0HG37470GZP18JM4XZQH2Y9
⚠️ Flaky E2E Tests (passed on retry)
These tests failed at least once and passed on a retry. A recurring entry here is a real race worth investigating.
28 flaky tests
  • cancelRun via CLI - cancelling a running workflow (hono)
  • cancelRun via CLI - cancelling a running workflow (nextjs-turbopack)
  • cancelRun via CLI - cancelling a running workflow (vite)
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously (example)
  • cross-file step error preserves message and function names in stack (astro)
  • fire-and-forget: void setAttributes lands without awaiting (nextjs-turbopack)
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data (nextjs-webpack)
  • hookCleanupTestWorkflow - hook token reuse after workflow completion (vite)
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps (nextjs-webpack)
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered (nextjs-webpack)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (express)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (sveltekit)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (tanstack-start)
  • Promise.all of disjoint-key writes: every key lands (fastify)
  • Promise.all of disjoint-key writes: every key lands (hono)
  • Promise.all of disjoint-key writes: every key lands (nuxt)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (astro)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (vite)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (example)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (hono)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (nextjs-turbopack)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (sveltekit)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (vite)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (fastify)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (hono)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nest)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nextjs-webpack)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nitro)
🛠 Infra Events (absorbed by the harness)
Platform anomalies the e2e harness detected and worked around (e.g. a run the queue never picked up, replaced by a fresh run). Clustered timestamps indicate a backend blip; a steady drip indicates a platform issue worth escalating.
  • run-pickup-stall · Calculator.calculate - static workflow method using static step methods from another class (tanstack-start) · at 06:24:33Z · abandoned wrun_01M0HFVR2VDKZ1S5XAYGFR2TZF
E2E Test Summary
Summary
PassedFailedSkippedTotal
❌ ▲ Vercel Production33532257424320
✅ 💻 Local Development392205584480
✅ 📦 Local Production392205584480
❌ 🐘 Local Postgres392115584480
✅ 🪟 Windows16000160
✅ 🌐 Cross-language Conformance90132141
✅ vercel-multi-region270027
Total15314226254818088
Details by Category
❌ ▲ Vercel Production
AppPassedFailedSkipped
❌ astro-node123928
❌ astro-quickjs123928
❌ example-node124828
❌ example-quickjs1211128
❌ express-node127528
❌ express-quickjs1211128
❌ fastify-node123928
❌ fastify-quickjs1211128
❌ hono-node124828
❌ hono-quickjs124828
❌ nest-node1211128
❌ nest-quickjs124828
❌ nextjs-turbopack-node15523
❌ nextjs-turbopack-quickjs147103
❌ nextjs-webpack-node147103
❌ nextjs-webpack-quickjs15073
❌ nitro-node1221028
❌ nitro-quickjs1221028
❌ nuxt-node1211128
❌ nuxt-quickjs1221028
✅ python-node80152
❌ sveltekit-node14389
❌ sveltekit-quickjs141109
❌ tanstack-start-node126628
❌ tanstack-start-quickjs125728
❌ vite-node127528
❌ vite-quickjs1211128
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026
❌ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
❌ vite-stable-quickjs133126
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack-quickjs16000
✅ 🌐 Cross-language Conformance
AppPassedFailedSkipped
✅ python90132
✅ vercel-multi-region
AppPassedFailedSkipped
✅ nextjs-turbopack2700
📋 View full workflow run
@github-actions
github-actionsBot
commented
Aug 21, 2026

Copy link


Copy Markdown

Contributor
Sim World
Simulated world deterministic testing for races. Traces
🟠 world-sim scenario book — 1 fail of 41 total
fence=per-spec
scenariooutcomeeventsvirtreplayviolations
✅ smoke-no-stepscompleted30msok0
✅ smoke-one-stepcompleted60msok0
✅ hook-at-step-startedcompleted120msok0
✅ hook-at-step-completedcompleted120msok0
✅ hook-at-hook-createdcompleted120msok0
✅ deadline-hook-winscompleted71.0hok0
✅ deadline-expirescompleted71.0hok0
✅ long-sleepcompleted1130.0dok0
✅ hook-never-arrivesstalled30msskipped0
✅ step-retries-twicecompleted102.0sok0
✅ parallel-stepscompleted90msok0
✅ hook-on-execution-statecompleted120msok0
✅ peek-hook-before-branchcompleted120msok0
✅ peek-hook-after-branchcompleted120msok0
✅ peek-hook-at-registrationcompleted120msok0
✅ race-hook-before-probecompleted120msok0
✅ race-hook-after-probecompleted120msok0
✅ race-duplicate-deliverycompleted130msok0
✅ attr-hook-before-stepcompleted110msok0
✅ attr-hook-after-stepcompleted110msok0
✅ attr-from-step-bodycompleted130msok0
✅ fork-hook-after-timeoutcompleted141.0mok0
✅ fork-hook-before-timeoutcompleted141.0mok0
✅ count-hook-after-timeoutcompleted171.0mok0
✅ count-hook-before-timeoutcompleted201.0mok0
✅ stale-read-step-count-forkcompleted201.0mok0
✅ stale-read-equal-step-countscompleted141.0mok0
✅ step-vs-step-forkcompleted120msok0
✅ step-vs-step-fork-fencedcompleted120msok0
✅ fence-catches-benign-directioncompleted125msok0
✅ in-flight-before-decisioncompleted171.0mok0
❌ in-flight-before-decision-countedcompleted171.0mok0
✅ in-flight-after-decisioncompleted192.0mok0
✅ stale-read-step-count-fork-fencedcompleted201.0mok0
✅ fork-hook-winscompleted131.0mok0
✅ fork-timeout-winscompleted131.0mok0
✅ unclaimed-payload-under-forkcompleted171.0mok0
✅ claimed-payload-under-forkcompleted171.0mok0
✅ writers-independent-step-bodiescompleted120msok0
✅ writers-scripted-tempocompleted120msok0
✅ cancel-mid-stepcancelled70msskipped0
Full trace: world-sim.txt
@VaguelySeriousVaguelySerious
mentioned this pull request
Aug 21, 2026
 Merged

Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


No reviews


Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

1 participant

@shalabhc

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
[world-vercel] Isolate run-status long polls - #3709
Draft
shalabhc wants to merge 1 commit into
mainfrom 
deflake
Draft
[world-vercel] Isolate run-status long polls#3709
shalabhc wants to merge 1 commit into
mainfrom 
deflake
Conversation
@shalabhc
@shalabhcshalabhc
commented
Aug 21, 2026

Copy link


Copy Markdown

Collaborator
Summary
  • route held run-status requests through a dedicated connection pool
  • keep ordinary workflow-server traffic available while concurrent run.returnValue waits are open
  • apply the same isolation to the optional node:http transport and preserve explicit dispatcher overrides
Why
Main run 32413467237 failed 29 Vercel E2E lanes after #3570 enabled run-status long polling. Local, Postgres, Windows, and Python lanes stayed green.
The default world-vercel HTTP/1.1 agent has 8 connections. Concurrent E2E lanes peaked at 6-8 tests, and each run.returnValue can hold a status request for 50 seconds. Those waits consumed the default pool, starving the ordinary reads and hook/control calls needed for runs to complete. Failure artifacts consequently contain broad 30s/60s timeouts across unrelated tests and frameworks.
Test plan
  • pnpm --filter @workflow/world-vercel test (550 passed)
  • pnpm vitest run packages/core/src/runtime/run-return-value-long-poll.test.ts (17 passed)
  • pnpm turbo run typecheck --filter=@workflow/world-vercel
  • pnpm biome check packages/world-vercel/src/http-client.ts packages/world-vercel/src/utils.ts packages/world-vercel/src/runs.ts packages/world-vercel/src/http-client.test.ts .changeset/run-status-pool-isolation.md (no errors; existing makeRequest complexity warning only)
@vercel@shalabhc
[world-vercel] Isolate run-status long polls
4f2b4f6
Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>
@changeset-bot
changeset-botBot
commented
Aug 21, 2026

Copy link


Copy Markdown

🦋 Changeset detected
Latest commit: 4f2b4f6
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 17 packages
NameType
@workflow/world-vercelPatch
@workflow/cliPatch
@workflow/corePatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@vercel
vercelBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
The latest updates on your projects. Learn more about Vercel for GitHub.
ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreviewAug 21, 2026 6:21am
example-nextjs-workflow-webpackReadyReadyPreviewAug 21, 2026 6:21am
example-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-astro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-express-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-fastify-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-hono-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nestjs-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nitro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nuxt-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-python-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-sveltekit-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-tanstack-start-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-vite-workflowReadyReadyPreviewAug 21, 2026 6:21am
workflow-docsReadyReadyPreview, v0Aug 21, 2026 6:21am
workflow-swc-playgroundReadyReadyPreviewAug 21, 2026 6:21am
workflow-tarballsReadyReadyPreviewAug 21, 2026 6:21am
workflow-webReadyReadyPreviewAug 21, 2026 6:21am
@github-actions
github-actionsBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
📊 Workflow Benchmarks
commit 4f2b4f6 · Fri, 21 Aug 2026 06:38:33 GMT · run logs
Backend: vercel · app: nextjs-turbopack
MetricScenarioBest (ms)P75 (ms)P90 (ms)P99 (ms)Samples
TTFSstep287 (-58%) 💚1302 🔴 (+26%) 🔻1329 🔴 (+20%) 🔻1505 🔴 (±0%)30
TTFSstream1196 (+335%) 🔻1275 🔴 (+17%) 🔻1291 🔴 (+18%) 🔻1304 🔴 (+15%)30
TTFShook + stream1459 (+14%)1577 🔴 (+10%)1644 🔴 (-1.1%)1863 🔴 (-60%) 💚30
Fan-out TTFSPromise.all(100 steps)550 (+26%) 🔻857 (+38%) 🔻872 (+30%) 🔻2012 (+2.8%)10
Fan-out TTLSPromise.all(100 steps)4653 (+6.1%)7332 (-2.2%)9518 (+24%) 🔻11255 (+28%) 🔻10
STSO1020 steps (inline)115 (-9.4%)197 (-19%) 💚249 (-13%)346 (-24%) 💚1019
WO1020 steps178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚1
CRTTfirst chunk (pooled)85 (-3.4%)142 (+10%)179 (+19%) 🔻316 (-22%) 💚28
Streams
ScenarioCRTT 1stp75p90p99CDV maxiters
paced control (100/s, 60B)114 (+7%)117 (-5%)141 (-33%)257 (-49%)105 (-17%)10
size sweep (100/s, 160B-12KB)105 (+1%)117 (-11%)134 (-39%)278 (-48%)95.5 (-42%)10
replay gateway-gpt-5.4-nano-2000t (1x)178 (+31%)127 (-7%)340 (+67%)898 (+62%)143 (-1%)3
replay eve-gpt-5.6-sol-2000t (1x)134 (-47%)107 (-57%)138 (-90%)284 (-94%)417 (-82%)2
replay eve-gpt-5.6-sol-2000t (2x)139 (-7%)154 (-13%)226 (-28%)1058 (+9%)592 (+2%)3
📈 STSO distribution vs main (inline / queue-hop histograms)
1020 steps (inline)
Cumulative STSO time: main 231540ms → this run 177014ms (Δ -54526ms, -24%)
100-150 ms █░░░░░░░░░░░░░░░░░░░░░░┃ main 6 this 499 +493
150-200 ms ████████████┃████ main 344 this 271 -73
200-250 ms ██████┃███████████████ main 451 this 149 -302
250-300 ms ██┃████ main 144 this 66 -78
300-350 ms ┃█ main 45 this 24 -21
350-400 ms ┃ main 7 this 3 -4
400-450 ms ┃ main 10 this 1 -9
450-500 ms ┃ main 5 this 1 -4
500-550 ms ┃ main 1 this 2 +1
550-600 ms ┃ main 2 this 1 -1
600-650 ms ┃ main 1 this 1 +0
650-700 ms ┃ main 0 this 1 +1
700-750 ms ┃ main 2 this 0 -2
800-850 ms ┃ main 1 this 0 -1

📈 CRTT drill-down vs main (RTT distributions & profiles)
variant RTT 1ms→5s+ avg p50 p90 p99 n
control ······█▇▁···· 100.3 (-9%) 94 (-4%) 141 (-33%) 257 (-49%) 3000
sweep ······█▇▁···· 99.6 (-16%) 95 (-9%) 134 (-39%) 278 (-48%) 3000
gw 1x ·····▁█▇▁▁▁·· 118.6 (+6%) 98 (-1%) 340 (+67%) 898 (+62%) 5295
eve 1x ·····▁█▅▁▁··· 95.4 (-70%) 87 (-16%) 138 (-90%) 284 (-94%) 5186
eve 2x ·····▁▆█▂▁▁·· 135.3 (-12%) 109 (-14%) 226 (-28%) 1058 (+9%) 7779

RTT over stream progress (avg per tenth of stream, bars scaled min→max):
control █▃▃▄▆▃▄▂▃▁ 91–115ms
sweep █▄▃▃▃▃▁▃▄▂ 90–118ms
gw 1x ▅▃▁█▁▂▃▂▁▁ 94–200ms
eve 1x █▂▄▃▂▃▆▅▄▁ 79–121ms
eve 2x ▂▄█▂▁▂▃▃▂▂ 97–245ms

RTT by chunk size (avg per log size bin, ~160B → ~12KB serialized, bars scaled min→max):
sweep █▇▆▆▄▁▃ 97–102ms

Delivery jitter over stream progress (avg positive CDV per tenth of stream, bars scaled min→max):
control ▃▄▆██▁█▃▄▂ 26–33ms
sweep ▅▄▆█▆▇▃▂▇▁ 37–45ms
gw 1x █▄▁▃▂▂▄▁▁▁ 29–40ms
eve 1x ▇▁▃▁▄▄█▄█▇ 17–23ms
eve 2x ▃▇█▂▄▇▁▃▂▆ 19–24ms

ℹ️ Metric definitions & methodology
Streams: first-chunk RTT (the stream-open path, before any buffering/backpressure), CRTT percentiles, and worst delivery stall (CDV max). Cells are medians across iterations; per-run values in the artifacts. No 🔴/🟢 marks until targets attach.
The collapsed STSO distribution section above buckets every step gap, split inline (same warm process — pure framework overhead) vs queue-hop (fresh process — dispatch, reinit, replay). █ = main, ┃ = this run, ░ = fill.
The collapsed CRTT drill-down: per-variant RTT histograms (fixed log bins, · = empty) and mean RTT/positive-CDV profile lines over stream progress and chunk size. Histograms, avgs, and profiles merge exactly across runs; p50–p99 are percentile-of-percentiles. Per-index rows live in the artifacts.
Best/P75/P90/P99 deltas compare against the most recent benchmark run on main at the time of this run. 🔻 flags a delta worse than +15%, 💚 one better than −15%.
Metrics — TTFS: time to first step body (in-deployment start() → first step body) · Fan-out TTFS: fan-out time to first step (in-deployment start() → first of the parallel step bodies to complete) · Fan-out TTLS: fan-out time to last step (in-deployment start() → last of the parallel step bodies to complete, i.e. when the Promise.all resolves) · STSO: step-to-step overhead (gap between consecutive step bodies) · WO: workflow overhead (whole-run time outside step bodies, in-deployment anchored) · CRTT: chunk round-trip time (per-chunk write → read latency, one clock domain: deployment → stream backend → same deployment) · CDV: chunk delay variation / delivery jitter (inter-arrival gap minus inter-write gap per seq-adjacent pair; skew-free; the row is each run's MAX positive value, so one stall moves it)
Scenarios — step: one trivial no-op step, no stream; no hooks, so the run stays in turbo mode (in-process fast path) · stream: one streaming step; no hooks, so the run stays in turbo mode (in-process fast path) · hook + stream: registers a hook before one step, which exits turbo mode (dispatch path) · 1020 steps: 1020 trivial sequential steps; STSO is measured between consecutive steps in the given step ranges, and WO is the whole-run overhead outside step bodies · Promise.all(100 steps): 100 trivial no-op steps started together in a single Promise.all; Fan-out TTFS is the first of them to complete and Fan-out TTLS the last, both from the in-deployment clientStart, so their gap is the spread the runtime adds across the fan-out · paced control (100/s, 60B): the control: 300 tiny (~60B) deltas metronome-paced at 100/s — zero workload structure, so it reads the transport floor and flush cadence, and disambiguates transport-wide vs workload-specific when a replay row moves · size sweep (100/s, 160B-12KB): same pacing as the control with deltas padded in rotation across seven log-spaced sizes (~160B–12KB) — rotation decouples size from stream position, so it isolates whether chunk size causes latency · replay gateway-gpt-5.4-nano-2000t (1x): raw provider SSE cadence captured at the AI gateway boundary (gpt-5.4-nano, the most popular gateway model; per-token deltas p50 208B = the modal production chunk size), replayed exactly as measured — the typical customer's workload; its CDV is the typical customer's real delivery jitter · replay eve-gpt-5.6-sol-2000t (1x): a captured eve turn (gpt-5.6-sol, the most-used demanding eve model; ~2000 output tokens = production p50 turn length) replayed exactly as measured — eve's envelope protocol re-ships the cumulative message so sizes ramp 142B→13KB; the demanding outlier tenant's reality · replay eve-gpt-5.6-sol-2000t (2x): the same eve capture at 2x — the headroom/stress row; real fast-tier models emit the same chunk sizes at proportionally higher rate, so time compression is a faithful speed model · first chunk (pooled): every run's seq-0 RTT pooled across all stream scenarios — the first chunk precedes any workload differentiation, so pooling samples one shared stream-open path with exact percentiles
Replay cadences (semantic sha256) — eve-gpt-5.6-sol-2000teaf22f5946e7c61f3c65c7006d550df180cfabd4e706254a09f22aec0cfb420d · gateway-gpt-5.4-nano-2000t6f24ac518b6b83ff1d0e85a5fe78230db192716d66a7fc6b2fe022752001d041
🔴 marks a percentile over its target (within target is left unmarked). Targets (p75/p90/p99, ms) — TTFS 200/300/600
All timestamps are deployment-side; runs are triggered in-deployment, so the CI runner and api.vercel.com sit outside every measured window. TTFS = start() → first step body (includes dispatch + any cold start); Fan-out TTFS/TTLS = first/last step completion of one Promise.all from the same anchor (the gap is the runtime’s fan-out spread); STSO/WO between step bodies; CRTT inside the workflow (excludes the api.vercel.com read path).
Cold starts stay in the numbers (real bursty-workload latency, inflates P75+); Best is the warm floor.
@github-actions
github-actionsBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
🧪 E2E Test Results
❌ Some tests failed
❌ Failed E2E Tests
▲ Vercel Production (225 failed)
astro-node (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
astro-quickjs (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
example-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
example-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
express-node (5 failed):
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
express-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
fastify-node (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
fastify-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
hono-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
hono-quickjs (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
nest-node (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nest-quickjs (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-turbopack-node (2 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
nextjs-turbopack-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-webpack-node (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-webpack-quickjs (7 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nitro-node (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nitro-quickjs (10 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nuxt-node (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nuxt-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
sveltekit-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
sveltekit-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
tanstack-start-node (6 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
tanstack-start-quickjs (7 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
vite-node (5 failed):
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
vite-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
🐘 Local Postgres (1 failed)
vite-stable-quickjs (1 failed):
  • cancelRun via CLI - cancelling a running workflow | wrun_41M0HG37470GZP18JM4XZQH2Y9
⚠️ Flaky E2E Tests (passed on retry)
These tests failed at least once and passed on a retry. A recurring entry here is a real race worth investigating.
28 flaky tests
  • cancelRun via CLI - cancelling a running workflow (hono)
  • cancelRun via CLI - cancelling a running workflow (nextjs-turbopack)
  • cancelRun via CLI - cancelling a running workflow (vite)
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously (example)
  • cross-file step error preserves message and function names in stack (astro)
  • fire-and-forget: void setAttributes lands without awaiting (nextjs-turbopack)
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data (nextjs-webpack)
  • hookCleanupTestWorkflow - hook token reuse after workflow completion (vite)
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps (nextjs-webpack)
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered (nextjs-webpack)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (express)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (sveltekit)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (tanstack-start)
  • Promise.all of disjoint-key writes: every key lands (fastify)
  • Promise.all of disjoint-key writes: every key lands (hono)
  • Promise.all of disjoint-key writes: every key lands (nuxt)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (astro)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (vite)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (example)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (hono)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (nextjs-turbopack)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (sveltekit)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (vite)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (fastify)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (hono)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nest)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nextjs-webpack)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nitro)
🛠 Infra Events (absorbed by the harness)
Platform anomalies the e2e harness detected and worked around (e.g. a run the queue never picked up, replaced by a fresh run). Clustered timestamps indicate a backend blip; a steady drip indicates a platform issue worth escalating.
  • run-pickup-stall · Calculator.calculate - static workflow method using static step methods from another class (tanstack-start) · at 06:24:33Z · abandoned wrun_01M0HFVR2VDKZ1S5XAYGFR2TZF
E2E Test Summary
Summary
PassedFailedSkippedTotal
❌ ▲ Vercel Production33532257424320
✅ 💻 Local Development392205584480
✅ 📦 Local Production392205584480
❌ 🐘 Local Postgres392115584480
✅ 🪟 Windows16000160
✅ 🌐 Cross-language Conformance90132141
✅ vercel-multi-region270027
Total15314226254818088
Details by Category
❌ ▲ Vercel Production
AppPassedFailedSkipped
❌ astro-node123928
❌ astro-quickjs123928
❌ example-node124828
❌ example-quickjs1211128
❌ express-node127528
❌ express-quickjs1211128
❌ fastify-node123928
❌ fastify-quickjs1211128
❌ hono-node124828
❌ hono-quickjs124828
❌ nest-node1211128
❌ nest-quickjs124828
❌ nextjs-turbopack-node15523
❌ nextjs-turbopack-quickjs147103
❌ nextjs-webpack-node147103
❌ nextjs-webpack-quickjs15073
❌ nitro-node1221028
❌ nitro-quickjs1221028
❌ nuxt-node1211128
❌ nuxt-quickjs1221028
✅ python-node80152
❌ sveltekit-node14389
❌ sveltekit-quickjs141109
❌ tanstack-start-node126628
❌ tanstack-start-quickjs125728
❌ vite-node127528
❌ vite-quickjs1211128
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026
❌ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
❌ vite-stable-quickjs133126
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack-quickjs16000
✅ 🌐 Cross-language Conformance
AppPassedFailedSkipped
✅ python90132
✅ vercel-multi-region
AppPassedFailedSkipped
✅ nextjs-turbopack2700
📋 View full workflow run
@github-actions
github-actionsBot
commented
Aug 21, 2026

Copy link


Copy Markdown

Contributor
Sim World
Simulated world deterministic testing for races. Traces
🟠 world-sim scenario book — 1 fail of 41 total
fence=per-spec
scenariooutcomeeventsvirtreplayviolations
✅ smoke-no-stepscompleted30msok0
✅ smoke-one-stepcompleted60msok0
✅ hook-at-step-startedcompleted120msok0
✅ hook-at-step-completedcompleted120msok0
✅ hook-at-hook-createdcompleted120msok0
✅ deadline-hook-winscompleted71.0hok0
✅ deadline-expirescompleted71.0hok0
✅ long-sleepcompleted1130.0dok0
✅ hook-never-arrivesstalled30msskipped0
✅ step-retries-twicecompleted102.0sok0
✅ parallel-stepscompleted90msok0
✅ hook-on-execution-statecompleted120msok0
✅ peek-hook-before-branchcompleted120msok0
✅ peek-hook-after-branchcompleted120msok0
✅ peek-hook-at-registrationcompleted120msok0
✅ race-hook-before-probecompleted120msok0
✅ race-hook-after-probecompleted120msok0
✅ race-duplicate-deliverycompleted130msok0
✅ attr-hook-before-stepcompleted110msok0
✅ attr-hook-after-stepcompleted110msok0
✅ attr-from-step-bodycompleted130msok0
✅ fork-hook-after-timeoutcompleted141.0mok0
✅ fork-hook-before-timeoutcompleted141.0mok0
✅ count-hook-after-timeoutcompleted171.0mok0
✅ count-hook-before-timeoutcompleted201.0mok0
✅ stale-read-step-count-forkcompleted201.0mok0
✅ stale-read-equal-step-countscompleted141.0mok0
✅ step-vs-step-forkcompleted120msok0
✅ step-vs-step-fork-fencedcompleted120msok0
✅ fence-catches-benign-directioncompleted125msok0
✅ in-flight-before-decisioncompleted171.0mok0
❌ in-flight-before-decision-countedcompleted171.0mok0
✅ in-flight-after-decisioncompleted192.0mok0
✅ stale-read-step-count-fork-fencedcompleted201.0mok0
✅ fork-hook-winscompleted131.0mok0
✅ fork-timeout-winscompleted131.0mok0
✅ unclaimed-payload-under-forkcompleted171.0mok0
✅ claimed-payload-under-forkcompleted171.0mok0
✅ writers-independent-step-bodiescompleted120msok0
✅ writers-scripted-tempocompleted120msok0
✅ cancel-mid-stepcancelled70msskipped0
Full trace: world-sim.txt
@VaguelySeriousVaguelySerious
mentioned this pull request
Aug 21, 2026
 Merged

Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


No reviews


Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

1 participant

@shalabhc

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
[world-vercel] Isolate run-status long polls - #3709
Draft
shalabhc wants to merge 1 commit into
mainfrom 
deflake
Draft
[world-vercel] Isolate run-status long polls#3709
shalabhc wants to merge 1 commit into
mainfrom 
deflake
Conversation
@shalabhc
@shalabhcshalabhc
commented
Aug 21, 2026

Copy link


Copy Markdown

Collaborator
Summary
  • route held run-status requests through a dedicated connection pool
  • keep ordinary workflow-server traffic available while concurrent run.returnValue waits are open
  • apply the same isolation to the optional node:http transport and preserve explicit dispatcher overrides
Why
Main run 32413467237 failed 29 Vercel E2E lanes after #3570 enabled run-status long polling. Local, Postgres, Windows, and Python lanes stayed green.
The default world-vercel HTTP/1.1 agent has 8 connections. Concurrent E2E lanes peaked at 6-8 tests, and each run.returnValue can hold a status request for 50 seconds. Those waits consumed the default pool, starving the ordinary reads and hook/control calls needed for runs to complete. Failure artifacts consequently contain broad 30s/60s timeouts across unrelated tests and frameworks.
Test plan
  • pnpm --filter @workflow/world-vercel test (550 passed)
  • pnpm vitest run packages/core/src/runtime/run-return-value-long-poll.test.ts (17 passed)
  • pnpm turbo run typecheck --filter=@workflow/world-vercel
  • pnpm biome check packages/world-vercel/src/http-client.ts packages/world-vercel/src/utils.ts packages/world-vercel/src/runs.ts packages/world-vercel/src/http-client.test.ts .changeset/run-status-pool-isolation.md (no errors; existing makeRequest complexity warning only)
@vercel@shalabhc
[world-vercel] Isolate run-status long polls
4f2b4f6
Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>
@changeset-bot
changeset-botBot
commented
Aug 21, 2026

Copy link


Copy Markdown

🦋 Changeset detected
Latest commit: 4f2b4f6
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 17 packages
NameType
@workflow/world-vercelPatch
@workflow/cliPatch
@workflow/corePatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@vercel
vercelBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
The latest updates on your projects. Learn more about Vercel for GitHub.
ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreviewAug 21, 2026 6:21am
example-nextjs-workflow-webpackReadyReadyPreviewAug 21, 2026 6:21am
example-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-astro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-express-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-fastify-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-hono-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nestjs-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nitro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nuxt-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-python-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-sveltekit-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-tanstack-start-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-vite-workflowReadyReadyPreviewAug 21, 2026 6:21am
workflow-docsReadyReadyPreview, v0Aug 21, 2026 6:21am
workflow-swc-playgroundReadyReadyPreviewAug 21, 2026 6:21am
workflow-tarballsReadyReadyPreviewAug 21, 2026 6:21am
workflow-webReadyReadyPreviewAug 21, 2026 6:21am
@github-actions
github-actionsBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
📊 Workflow Benchmarks
commit 4f2b4f6 · Fri, 21 Aug 2026 06:38:33 GMT · run logs
Backend: vercel · app: nextjs-turbopack
MetricScenarioBest (ms)P75 (ms)P90 (ms)P99 (ms)Samples
TTFSstep287 (-58%) 💚1302 🔴 (+26%) 🔻1329 🔴 (+20%) 🔻1505 🔴 (±0%)30
TTFSstream1196 (+335%) 🔻1275 🔴 (+17%) 🔻1291 🔴 (+18%) 🔻1304 🔴 (+15%)30
TTFShook + stream1459 (+14%)1577 🔴 (+10%)1644 🔴 (-1.1%)1863 🔴 (-60%) 💚30
Fan-out TTFSPromise.all(100 steps)550 (+26%) 🔻857 (+38%) 🔻872 (+30%) 🔻2012 (+2.8%)10
Fan-out TTLSPromise.all(100 steps)4653 (+6.1%)7332 (-2.2%)9518 (+24%) 🔻11255 (+28%) 🔻10
STSO1020 steps (inline)115 (-9.4%)197 (-19%) 💚249 (-13%)346 (-24%) 💚1019
WO1020 steps178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚1
CRTTfirst chunk (pooled)85 (-3.4%)142 (+10%)179 (+19%) 🔻316 (-22%) 💚28
Streams
ScenarioCRTT 1stp75p90p99CDV maxiters
paced control (100/s, 60B)114 (+7%)117 (-5%)141 (-33%)257 (-49%)105 (-17%)10
size sweep (100/s, 160B-12KB)105 (+1%)117 (-11%)134 (-39%)278 (-48%)95.5 (-42%)10
replay gateway-gpt-5.4-nano-2000t (1x)178 (+31%)127 (-7%)340 (+67%)898 (+62%)143 (-1%)3
replay eve-gpt-5.6-sol-2000t (1x)134 (-47%)107 (-57%)138 (-90%)284 (-94%)417 (-82%)2
replay eve-gpt-5.6-sol-2000t (2x)139 (-7%)154 (-13%)226 (-28%)1058 (+9%)592 (+2%)3
📈 STSO distribution vs main (inline / queue-hop histograms)
1020 steps (inline)
Cumulative STSO time: main 231540ms → this run 177014ms (Δ -54526ms, -24%)
100-150 ms █░░░░░░░░░░░░░░░░░░░░░░┃ main 6 this 499 +493
150-200 ms ████████████┃████ main 344 this 271 -73
200-250 ms ██████┃███████████████ main 451 this 149 -302
250-300 ms ██┃████ main 144 this 66 -78
300-350 ms ┃█ main 45 this 24 -21
350-400 ms ┃ main 7 this 3 -4
400-450 ms ┃ main 10 this 1 -9
450-500 ms ┃ main 5 this 1 -4
500-550 ms ┃ main 1 this 2 +1
550-600 ms ┃ main 2 this 1 -1
600-650 ms ┃ main 1 this 1 +0
650-700 ms ┃ main 0 this 1 +1
700-750 ms ┃ main 2 this 0 -2
800-850 ms ┃ main 1 this 0 -1

📈 CRTT drill-down vs main (RTT distributions & profiles)
variant RTT 1ms→5s+ avg p50 p90 p99 n
control ······█▇▁···· 100.3 (-9%) 94 (-4%) 141 (-33%) 257 (-49%) 3000
sweep ······█▇▁···· 99.6 (-16%) 95 (-9%) 134 (-39%) 278 (-48%) 3000
gw 1x ·····▁█▇▁▁▁·· 118.6 (+6%) 98 (-1%) 340 (+67%) 898 (+62%) 5295
eve 1x ·····▁█▅▁▁··· 95.4 (-70%) 87 (-16%) 138 (-90%) 284 (-94%) 5186
eve 2x ·····▁▆█▂▁▁·· 135.3 (-12%) 109 (-14%) 226 (-28%) 1058 (+9%) 7779

RTT over stream progress (avg per tenth of stream, bars scaled min→max):
control █▃▃▄▆▃▄▂▃▁ 91–115ms
sweep █▄▃▃▃▃▁▃▄▂ 90–118ms
gw 1x ▅▃▁█▁▂▃▂▁▁ 94–200ms
eve 1x █▂▄▃▂▃▆▅▄▁ 79–121ms
eve 2x ▂▄█▂▁▂▃▃▂▂ 97–245ms

RTT by chunk size (avg per log size bin, ~160B → ~12KB serialized, bars scaled min→max):
sweep █▇▆▆▄▁▃ 97–102ms

Delivery jitter over stream progress (avg positive CDV per tenth of stream, bars scaled min→max):
control ▃▄▆██▁█▃▄▂ 26–33ms
sweep ▅▄▆█▆▇▃▂▇▁ 37–45ms
gw 1x █▄▁▃▂▂▄▁▁▁ 29–40ms
eve 1x ▇▁▃▁▄▄█▄█▇ 17–23ms
eve 2x ▃▇█▂▄▇▁▃▂▆ 19–24ms

ℹ️ Metric definitions & methodology
Streams: first-chunk RTT (the stream-open path, before any buffering/backpressure), CRTT percentiles, and worst delivery stall (CDV max). Cells are medians across iterations; per-run values in the artifacts. No 🔴/🟢 marks until targets attach.
The collapsed STSO distribution section above buckets every step gap, split inline (same warm process — pure framework overhead) vs queue-hop (fresh process — dispatch, reinit, replay). █ = main, ┃ = this run, ░ = fill.
The collapsed CRTT drill-down: per-variant RTT histograms (fixed log bins, · = empty) and mean RTT/positive-CDV profile lines over stream progress and chunk size. Histograms, avgs, and profiles merge exactly across runs; p50–p99 are percentile-of-percentiles. Per-index rows live in the artifacts.
Best/P75/P90/P99 deltas compare against the most recent benchmark run on main at the time of this run. 🔻 flags a delta worse than +15%, 💚 one better than −15%.
Metrics — TTFS: time to first step body (in-deployment start() → first step body) · Fan-out TTFS: fan-out time to first step (in-deployment start() → first of the parallel step bodies to complete) · Fan-out TTLS: fan-out time to last step (in-deployment start() → last of the parallel step bodies to complete, i.e. when the Promise.all resolves) · STSO: step-to-step overhead (gap between consecutive step bodies) · WO: workflow overhead (whole-run time outside step bodies, in-deployment anchored) · CRTT: chunk round-trip time (per-chunk write → read latency, one clock domain: deployment → stream backend → same deployment) · CDV: chunk delay variation / delivery jitter (inter-arrival gap minus inter-write gap per seq-adjacent pair; skew-free; the row is each run's MAX positive value, so one stall moves it)
Scenarios — step: one trivial no-op step, no stream; no hooks, so the run stays in turbo mode (in-process fast path) · stream: one streaming step; no hooks, so the run stays in turbo mode (in-process fast path) · hook + stream: registers a hook before one step, which exits turbo mode (dispatch path) · 1020 steps: 1020 trivial sequential steps; STSO is measured between consecutive steps in the given step ranges, and WO is the whole-run overhead outside step bodies · Promise.all(100 steps): 100 trivial no-op steps started together in a single Promise.all; Fan-out TTFS is the first of them to complete and Fan-out TTLS the last, both from the in-deployment clientStart, so their gap is the spread the runtime adds across the fan-out · paced control (100/s, 60B): the control: 300 tiny (~60B) deltas metronome-paced at 100/s — zero workload structure, so it reads the transport floor and flush cadence, and disambiguates transport-wide vs workload-specific when a replay row moves · size sweep (100/s, 160B-12KB): same pacing as the control with deltas padded in rotation across seven log-spaced sizes (~160B–12KB) — rotation decouples size from stream position, so it isolates whether chunk size causes latency · replay gateway-gpt-5.4-nano-2000t (1x): raw provider SSE cadence captured at the AI gateway boundary (gpt-5.4-nano, the most popular gateway model; per-token deltas p50 208B = the modal production chunk size), replayed exactly as measured — the typical customer's workload; its CDV is the typical customer's real delivery jitter · replay eve-gpt-5.6-sol-2000t (1x): a captured eve turn (gpt-5.6-sol, the most-used demanding eve model; ~2000 output tokens = production p50 turn length) replayed exactly as measured — eve's envelope protocol re-ships the cumulative message so sizes ramp 142B→13KB; the demanding outlier tenant's reality · replay eve-gpt-5.6-sol-2000t (2x): the same eve capture at 2x — the headroom/stress row; real fast-tier models emit the same chunk sizes at proportionally higher rate, so time compression is a faithful speed model · first chunk (pooled): every run's seq-0 RTT pooled across all stream scenarios — the first chunk precedes any workload differentiation, so pooling samples one shared stream-open path with exact percentiles
Replay cadences (semantic sha256) — eve-gpt-5.6-sol-2000teaf22f5946e7c61f3c65c7006d550df180cfabd4e706254a09f22aec0cfb420d · gateway-gpt-5.4-nano-2000t6f24ac518b6b83ff1d0e85a5fe78230db192716d66a7fc6b2fe022752001d041
🔴 marks a percentile over its target (within target is left unmarked). Targets (p75/p90/p99, ms) — TTFS 200/300/600
All timestamps are deployment-side; runs are triggered in-deployment, so the CI runner and api.vercel.com sit outside every measured window. TTFS = start() → first step body (includes dispatch + any cold start); Fan-out TTFS/TTLS = first/last step completion of one Promise.all from the same anchor (the gap is the runtime’s fan-out spread); STSO/WO between step bodies; CRTT inside the workflow (excludes the api.vercel.com read path).
Cold starts stay in the numbers (real bursty-workload latency, inflates P75+); Best is the warm floor.
@github-actions
github-actionsBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
🧪 E2E Test Results
❌ Some tests failed
❌ Failed E2E Tests
▲ Vercel Production (225 failed)
astro-node (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
astro-quickjs (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
example-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
example-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
express-node (5 failed):
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
express-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
fastify-node (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
fastify-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
hono-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
hono-quickjs (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
nest-node (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nest-quickjs (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-turbopack-node (2 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
nextjs-turbopack-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-webpack-node (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-webpack-quickjs (7 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nitro-node (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nitro-quickjs (10 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nuxt-node (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nuxt-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
sveltekit-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
sveltekit-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
tanstack-start-node (6 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
tanstack-start-quickjs (7 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
vite-node (5 failed):
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
vite-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
🐘 Local Postgres (1 failed)
vite-stable-quickjs (1 failed):
  • cancelRun via CLI - cancelling a running workflow | wrun_41M0HG37470GZP18JM4XZQH2Y9
⚠️ Flaky E2E Tests (passed on retry)
These tests failed at least once and passed on a retry. A recurring entry here is a real race worth investigating.
28 flaky tests
  • cancelRun via CLI - cancelling a running workflow (hono)
  • cancelRun via CLI - cancelling a running workflow (nextjs-turbopack)
  • cancelRun via CLI - cancelling a running workflow (vite)
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously (example)
  • cross-file step error preserves message and function names in stack (astro)
  • fire-and-forget: void setAttributes lands without awaiting (nextjs-turbopack)
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data (nextjs-webpack)
  • hookCleanupTestWorkflow - hook token reuse after workflow completion (vite)
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps (nextjs-webpack)
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered (nextjs-webpack)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (express)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (sveltekit)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (tanstack-start)
  • Promise.all of disjoint-key writes: every key lands (fastify)
  • Promise.all of disjoint-key writes: every key lands (hono)
  • Promise.all of disjoint-key writes: every key lands (nuxt)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (astro)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (vite)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (example)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (hono)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (nextjs-turbopack)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (sveltekit)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (vite)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (fastify)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (hono)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nest)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nextjs-webpack)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nitro)
🛠 Infra Events (absorbed by the harness)
Platform anomalies the e2e harness detected and worked around (e.g. a run the queue never picked up, replaced by a fresh run). Clustered timestamps indicate a backend blip; a steady drip indicates a platform issue worth escalating.
  • run-pickup-stall · Calculator.calculate - static workflow method using static step methods from another class (tanstack-start) · at 06:24:33Z · abandoned wrun_01M0HFVR2VDKZ1S5XAYGFR2TZF
E2E Test Summary
Summary
PassedFailedSkippedTotal
❌ ▲ Vercel Production33532257424320
✅ 💻 Local Development392205584480
✅ 📦 Local Production392205584480
❌ 🐘 Local Postgres392115584480
✅ 🪟 Windows16000160
✅ 🌐 Cross-language Conformance90132141
✅ vercel-multi-region270027
Total15314226254818088
Details by Category
❌ ▲ Vercel Production
AppPassedFailedSkipped
❌ astro-node123928
❌ astro-quickjs123928
❌ example-node124828
❌ example-quickjs1211128
❌ express-node127528
❌ express-quickjs1211128
❌ fastify-node123928
❌ fastify-quickjs1211128
❌ hono-node124828
❌ hono-quickjs124828
❌ nest-node1211128
❌ nest-quickjs124828
❌ nextjs-turbopack-node15523
❌ nextjs-turbopack-quickjs147103
❌ nextjs-webpack-node147103
❌ nextjs-webpack-quickjs15073
❌ nitro-node1221028
❌ nitro-quickjs1221028
❌ nuxt-node1211128
❌ nuxt-quickjs1221028
✅ python-node80152
❌ sveltekit-node14389
❌ sveltekit-quickjs141109
❌ tanstack-start-node126628
❌ tanstack-start-quickjs125728
❌ vite-node127528
❌ vite-quickjs1211128
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026
❌ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
❌ vite-stable-quickjs133126
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack-quickjs16000
✅ 🌐 Cross-language Conformance
AppPassedFailedSkipped
✅ python90132
✅ vercel-multi-region
AppPassedFailedSkipped
✅ nextjs-turbopack2700
📋 View full workflow run
@github-actions
github-actionsBot
commented
Aug 21, 2026

Copy link


Copy Markdown

Contributor
Sim World
Simulated world deterministic testing for races. Traces
🟠 world-sim scenario book — 1 fail of 41 total
fence=per-spec
scenariooutcomeeventsvirtreplayviolations
✅ smoke-no-stepscompleted30msok0
✅ smoke-one-stepcompleted60msok0
✅ hook-at-step-startedcompleted120msok0
✅ hook-at-step-completedcompleted120msok0
✅ hook-at-hook-createdcompleted120msok0
✅ deadline-hook-winscompleted71.0hok0
✅ deadline-expirescompleted71.0hok0
✅ long-sleepcompleted1130.0dok0
✅ hook-never-arrivesstalled30msskipped0
✅ step-retries-twicecompleted102.0sok0
✅ parallel-stepscompleted90msok0
✅ hook-on-execution-statecompleted120msok0
✅ peek-hook-before-branchcompleted120msok0
✅ peek-hook-after-branchcompleted120msok0
✅ peek-hook-at-registrationcompleted120msok0
✅ race-hook-before-probecompleted120msok0
✅ race-hook-after-probecompleted120msok0
✅ race-duplicate-deliverycompleted130msok0
✅ attr-hook-before-stepcompleted110msok0
✅ attr-hook-after-stepcompleted110msok0
✅ attr-from-step-bodycompleted130msok0
✅ fork-hook-after-timeoutcompleted141.0mok0
✅ fork-hook-before-timeoutcompleted141.0mok0
✅ count-hook-after-timeoutcompleted171.0mok0
✅ count-hook-before-timeoutcompleted201.0mok0
✅ stale-read-step-count-forkcompleted201.0mok0
✅ stale-read-equal-step-countscompleted141.0mok0
✅ step-vs-step-forkcompleted120msok0
✅ step-vs-step-fork-fencedcompleted120msok0
✅ fence-catches-benign-directioncompleted125msok0
✅ in-flight-before-decisioncompleted171.0mok0
❌ in-flight-before-decision-countedcompleted171.0mok0
✅ in-flight-after-decisioncompleted192.0mok0
✅ stale-read-step-count-fork-fencedcompleted201.0mok0
✅ fork-hook-winscompleted131.0mok0
✅ fork-timeout-winscompleted131.0mok0
✅ unclaimed-payload-under-forkcompleted171.0mok0
✅ claimed-payload-under-forkcompleted171.0mok0
✅ writers-independent-step-bodiescompleted120msok0
✅ writers-scripted-tempocompleted120msok0
✅ cancel-mid-stepcancelled70msskipped0
Full trace: world-sim.txt
@VaguelySeriousVaguelySerious
mentioned this pull request
Aug 21, 2026
 Merged

Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


No reviews


Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

1 participant

@shalabhc

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
[world-vercel] Isolate run-status long polls - #3709
Draft
shalabhc wants to merge 1 commit into
mainfrom 
deflake
Draft
[world-vercel] Isolate run-status long polls#3709
shalabhc wants to merge 1 commit into
mainfrom 
deflake
Conversation
@shalabhc
@shalabhcshalabhc
commented
Aug 21, 2026

Copy link


Copy Markdown

Collaborator
Summary
  • route held run-status requests through a dedicated connection pool
  • keep ordinary workflow-server traffic available while concurrent run.returnValue waits are open
  • apply the same isolation to the optional node:http transport and preserve explicit dispatcher overrides
Why
Main run 32413467237 failed 29 Vercel E2E lanes after #3570 enabled run-status long polling. Local, Postgres, Windows, and Python lanes stayed green.
The default world-vercel HTTP/1.1 agent has 8 connections. Concurrent E2E lanes peaked at 6-8 tests, and each run.returnValue can hold a status request for 50 seconds. Those waits consumed the default pool, starving the ordinary reads and hook/control calls needed for runs to complete. Failure artifacts consequently contain broad 30s/60s timeouts across unrelated tests and frameworks.
Test plan
  • pnpm --filter @workflow/world-vercel test (550 passed)
  • pnpm vitest run packages/core/src/runtime/run-return-value-long-poll.test.ts (17 passed)
  • pnpm turbo run typecheck --filter=@workflow/world-vercel
  • pnpm biome check packages/world-vercel/src/http-client.ts packages/world-vercel/src/utils.ts packages/world-vercel/src/runs.ts packages/world-vercel/src/http-client.test.ts .changeset/run-status-pool-isolation.md (no errors; existing makeRequest complexity warning only)
@vercel@shalabhc
[world-vercel] Isolate run-status long polls
4f2b4f6
Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>
@changeset-bot
changeset-botBot
commented
Aug 21, 2026

Copy link


Copy Markdown

🦋 Changeset detected
Latest commit: 4f2b4f6
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 17 packages
NameType
@workflow/world-vercelPatch
@workflow/cliPatch
@workflow/corePatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@vercel
vercelBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
The latest updates on your projects. Learn more about Vercel for GitHub.
ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreviewAug 21, 2026 6:21am
example-nextjs-workflow-webpackReadyReadyPreviewAug 21, 2026 6:21am
example-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-astro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-express-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-fastify-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-hono-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nestjs-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nitro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nuxt-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-python-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-sveltekit-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-tanstack-start-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-vite-workflowReadyReadyPreviewAug 21, 2026 6:21am
workflow-docsReadyReadyPreview, v0Aug 21, 2026 6:21am
workflow-swc-playgroundReadyReadyPreviewAug 21, 2026 6:21am
workflow-tarballsReadyReadyPreviewAug 21, 2026 6:21am
workflow-webReadyReadyPreviewAug 21, 2026 6:21am
@github-actions
github-actionsBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
📊 Workflow Benchmarks
commit 4f2b4f6 · Fri, 21 Aug 2026 06:38:33 GMT · run logs
Backend: vercel · app: nextjs-turbopack
MetricScenarioBest (ms)P75 (ms)P90 (ms)P99 (ms)Samples
TTFSstep287 (-58%) 💚1302 🔴 (+26%) 🔻1329 🔴 (+20%) 🔻1505 🔴 (±0%)30
TTFSstream1196 (+335%) 🔻1275 🔴 (+17%) 🔻1291 🔴 (+18%) 🔻1304 🔴 (+15%)30
TTFShook + stream1459 (+14%)1577 🔴 (+10%)1644 🔴 (-1.1%)1863 🔴 (-60%) 💚30
Fan-out TTFSPromise.all(100 steps)550 (+26%) 🔻857 (+38%) 🔻872 (+30%) 🔻2012 (+2.8%)10
Fan-out TTLSPromise.all(100 steps)4653 (+6.1%)7332 (-2.2%)9518 (+24%) 🔻11255 (+28%) 🔻10
STSO1020 steps (inline)115 (-9.4%)197 (-19%) 💚249 (-13%)346 (-24%) 💚1019
WO1020 steps178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚1
CRTTfirst chunk (pooled)85 (-3.4%)142 (+10%)179 (+19%) 🔻316 (-22%) 💚28
Streams
ScenarioCRTT 1stp75p90p99CDV maxiters
paced control (100/s, 60B)114 (+7%)117 (-5%)141 (-33%)257 (-49%)105 (-17%)10
size sweep (100/s, 160B-12KB)105 (+1%)117 (-11%)134 (-39%)278 (-48%)95.5 (-42%)10
replay gateway-gpt-5.4-nano-2000t (1x)178 (+31%)127 (-7%)340 (+67%)898 (+62%)143 (-1%)3
replay eve-gpt-5.6-sol-2000t (1x)134 (-47%)107 (-57%)138 (-90%)284 (-94%)417 (-82%)2
replay eve-gpt-5.6-sol-2000t (2x)139 (-7%)154 (-13%)226 (-28%)1058 (+9%)592 (+2%)3
📈 STSO distribution vs main (inline / queue-hop histograms)
1020 steps (inline)
Cumulative STSO time: main 231540ms → this run 177014ms (Δ -54526ms, -24%)
100-150 ms █░░░░░░░░░░░░░░░░░░░░░░┃ main 6 this 499 +493
150-200 ms ████████████┃████ main 344 this 271 -73
200-250 ms ██████┃███████████████ main 451 this 149 -302
250-300 ms ██┃████ main 144 this 66 -78
300-350 ms ┃█ main 45 this 24 -21
350-400 ms ┃ main 7 this 3 -4
400-450 ms ┃ main 10 this 1 -9
450-500 ms ┃ main 5 this 1 -4
500-550 ms ┃ main 1 this 2 +1
550-600 ms ┃ main 2 this 1 -1
600-650 ms ┃ main 1 this 1 +0
650-700 ms ┃ main 0 this 1 +1
700-750 ms ┃ main 2 this 0 -2
800-850 ms ┃ main 1 this 0 -1

📈 CRTT drill-down vs main (RTT distributions & profiles)
variant RTT 1ms→5s+ avg p50 p90 p99 n
control ······█▇▁···· 100.3 (-9%) 94 (-4%) 141 (-33%) 257 (-49%) 3000
sweep ······█▇▁···· 99.6 (-16%) 95 (-9%) 134 (-39%) 278 (-48%) 3000
gw 1x ·····▁█▇▁▁▁·· 118.6 (+6%) 98 (-1%) 340 (+67%) 898 (+62%) 5295
eve 1x ·····▁█▅▁▁··· 95.4 (-70%) 87 (-16%) 138 (-90%) 284 (-94%) 5186
eve 2x ·····▁▆█▂▁▁·· 135.3 (-12%) 109 (-14%) 226 (-28%) 1058 (+9%) 7779

RTT over stream progress (avg per tenth of stream, bars scaled min→max):
control █▃▃▄▆▃▄▂▃▁ 91–115ms
sweep █▄▃▃▃▃▁▃▄▂ 90–118ms
gw 1x ▅▃▁█▁▂▃▂▁▁ 94–200ms
eve 1x █▂▄▃▂▃▆▅▄▁ 79–121ms
eve 2x ▂▄█▂▁▂▃▃▂▂ 97–245ms

RTT by chunk size (avg per log size bin, ~160B → ~12KB serialized, bars scaled min→max):
sweep █▇▆▆▄▁▃ 97–102ms

Delivery jitter over stream progress (avg positive CDV per tenth of stream, bars scaled min→max):
control ▃▄▆██▁█▃▄▂ 26–33ms
sweep ▅▄▆█▆▇▃▂▇▁ 37–45ms
gw 1x █▄▁▃▂▂▄▁▁▁ 29–40ms
eve 1x ▇▁▃▁▄▄█▄█▇ 17–23ms
eve 2x ▃▇█▂▄▇▁▃▂▆ 19–24ms

ℹ️ Metric definitions & methodology
Streams: first-chunk RTT (the stream-open path, before any buffering/backpressure), CRTT percentiles, and worst delivery stall (CDV max). Cells are medians across iterations; per-run values in the artifacts. No 🔴/🟢 marks until targets attach.
The collapsed STSO distribution section above buckets every step gap, split inline (same warm process — pure framework overhead) vs queue-hop (fresh process — dispatch, reinit, replay). █ = main, ┃ = this run, ░ = fill.
The collapsed CRTT drill-down: per-variant RTT histograms (fixed log bins, · = empty) and mean RTT/positive-CDV profile lines over stream progress and chunk size. Histograms, avgs, and profiles merge exactly across runs; p50–p99 are percentile-of-percentiles. Per-index rows live in the artifacts.
Best/P75/P90/P99 deltas compare against the most recent benchmark run on main at the time of this run. 🔻 flags a delta worse than +15%, 💚 one better than −15%.
Metrics — TTFS: time to first step body (in-deployment start() → first step body) · Fan-out TTFS: fan-out time to first step (in-deployment start() → first of the parallel step bodies to complete) · Fan-out TTLS: fan-out time to last step (in-deployment start() → last of the parallel step bodies to complete, i.e. when the Promise.all resolves) · STSO: step-to-step overhead (gap between consecutive step bodies) · WO: workflow overhead (whole-run time outside step bodies, in-deployment anchored) · CRTT: chunk round-trip time (per-chunk write → read latency, one clock domain: deployment → stream backend → same deployment) · CDV: chunk delay variation / delivery jitter (inter-arrival gap minus inter-write gap per seq-adjacent pair; skew-free; the row is each run's MAX positive value, so one stall moves it)
Scenarios — step: one trivial no-op step, no stream; no hooks, so the run stays in turbo mode (in-process fast path) · stream: one streaming step; no hooks, so the run stays in turbo mode (in-process fast path) · hook + stream: registers a hook before one step, which exits turbo mode (dispatch path) · 1020 steps: 1020 trivial sequential steps; STSO is measured between consecutive steps in the given step ranges, and WO is the whole-run overhead outside step bodies · Promise.all(100 steps): 100 trivial no-op steps started together in a single Promise.all; Fan-out TTFS is the first of them to complete and Fan-out TTLS the last, both from the in-deployment clientStart, so their gap is the spread the runtime adds across the fan-out · paced control (100/s, 60B): the control: 300 tiny (~60B) deltas metronome-paced at 100/s — zero workload structure, so it reads the transport floor and flush cadence, and disambiguates transport-wide vs workload-specific when a replay row moves · size sweep (100/s, 160B-12KB): same pacing as the control with deltas padded in rotation across seven log-spaced sizes (~160B–12KB) — rotation decouples size from stream position, so it isolates whether chunk size causes latency · replay gateway-gpt-5.4-nano-2000t (1x): raw provider SSE cadence captured at the AI gateway boundary (gpt-5.4-nano, the most popular gateway model; per-token deltas p50 208B = the modal production chunk size), replayed exactly as measured — the typical customer's workload; its CDV is the typical customer's real delivery jitter · replay eve-gpt-5.6-sol-2000t (1x): a captured eve turn (gpt-5.6-sol, the most-used demanding eve model; ~2000 output tokens = production p50 turn length) replayed exactly as measured — eve's envelope protocol re-ships the cumulative message so sizes ramp 142B→13KB; the demanding outlier tenant's reality · replay eve-gpt-5.6-sol-2000t (2x): the same eve capture at 2x — the headroom/stress row; real fast-tier models emit the same chunk sizes at proportionally higher rate, so time compression is a faithful speed model · first chunk (pooled): every run's seq-0 RTT pooled across all stream scenarios — the first chunk precedes any workload differentiation, so pooling samples one shared stream-open path with exact percentiles
Replay cadences (semantic sha256) — eve-gpt-5.6-sol-2000teaf22f5946e7c61f3c65c7006d550df180cfabd4e706254a09f22aec0cfb420d · gateway-gpt-5.4-nano-2000t6f24ac518b6b83ff1d0e85a5fe78230db192716d66a7fc6b2fe022752001d041
🔴 marks a percentile over its target (within target is left unmarked). Targets (p75/p90/p99, ms) — TTFS 200/300/600
All timestamps are deployment-side; runs are triggered in-deployment, so the CI runner and api.vercel.com sit outside every measured window. TTFS = start() → first step body (includes dispatch + any cold start); Fan-out TTFS/TTLS = first/last step completion of one Promise.all from the same anchor (the gap is the runtime’s fan-out spread); STSO/WO between step bodies; CRTT inside the workflow (excludes the api.vercel.com read path).
Cold starts stay in the numbers (real bursty-workload latency, inflates P75+); Best is the warm floor.
@github-actions
github-actionsBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
🧪 E2E Test Results
❌ Some tests failed
❌ Failed E2E Tests
▲ Vercel Production (225 failed)
astro-node (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
astro-quickjs (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
example-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
example-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
express-node (5 failed):
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
express-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
fastify-node (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
fastify-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
hono-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
hono-quickjs (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
nest-node (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nest-quickjs (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-turbopack-node (2 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
nextjs-turbopack-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-webpack-node (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-webpack-quickjs (7 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nitro-node (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nitro-quickjs (10 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nuxt-node (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nuxt-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
sveltekit-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
sveltekit-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
tanstack-start-node (6 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
tanstack-start-quickjs (7 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
vite-node (5 failed):
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
vite-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
🐘 Local Postgres (1 failed)
vite-stable-quickjs (1 failed):
  • cancelRun via CLI - cancelling a running workflow | wrun_41M0HG37470GZP18JM4XZQH2Y9
⚠️ Flaky E2E Tests (passed on retry)
These tests failed at least once and passed on a retry. A recurring entry here is a real race worth investigating.
28 flaky tests
  • cancelRun via CLI - cancelling a running workflow (hono)
  • cancelRun via CLI - cancelling a running workflow (nextjs-turbopack)
  • cancelRun via CLI - cancelling a running workflow (vite)
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously (example)
  • cross-file step error preserves message and function names in stack (astro)
  • fire-and-forget: void setAttributes lands without awaiting (nextjs-turbopack)
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data (nextjs-webpack)
  • hookCleanupTestWorkflow - hook token reuse after workflow completion (vite)
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps (nextjs-webpack)
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered (nextjs-webpack)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (express)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (sveltekit)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (tanstack-start)
  • Promise.all of disjoint-key writes: every key lands (fastify)
  • Promise.all of disjoint-key writes: every key lands (hono)
  • Promise.all of disjoint-key writes: every key lands (nuxt)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (astro)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (vite)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (example)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (hono)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (nextjs-turbopack)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (sveltekit)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (vite)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (fastify)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (hono)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nest)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nextjs-webpack)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nitro)
🛠 Infra Events (absorbed by the harness)
Platform anomalies the e2e harness detected and worked around (e.g. a run the queue never picked up, replaced by a fresh run). Clustered timestamps indicate a backend blip; a steady drip indicates a platform issue worth escalating.
  • run-pickup-stall · Calculator.calculate - static workflow method using static step methods from another class (tanstack-start) · at 06:24:33Z · abandoned wrun_01M0HFVR2VDKZ1S5XAYGFR2TZF
E2E Test Summary
Summary
PassedFailedSkippedTotal
❌ ▲ Vercel Production33532257424320
✅ 💻 Local Development392205584480
✅ 📦 Local Production392205584480
❌ 🐘 Local Postgres392115584480
✅ 🪟 Windows16000160
✅ 🌐 Cross-language Conformance90132141
✅ vercel-multi-region270027
Total15314226254818088
Details by Category
❌ ▲ Vercel Production
AppPassedFailedSkipped
❌ astro-node123928
❌ astro-quickjs123928
❌ example-node124828
❌ example-quickjs1211128
❌ express-node127528
❌ express-quickjs1211128
❌ fastify-node123928
❌ fastify-quickjs1211128
❌ hono-node124828
❌ hono-quickjs124828
❌ nest-node1211128
❌ nest-quickjs124828
❌ nextjs-turbopack-node15523
❌ nextjs-turbopack-quickjs147103
❌ nextjs-webpack-node147103
❌ nextjs-webpack-quickjs15073
❌ nitro-node1221028
❌ nitro-quickjs1221028
❌ nuxt-node1211128
❌ nuxt-quickjs1221028
✅ python-node80152
❌ sveltekit-node14389
❌ sveltekit-quickjs141109
❌ tanstack-start-node126628
❌ tanstack-start-quickjs125728
❌ vite-node127528
❌ vite-quickjs1211128
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026
❌ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
❌ vite-stable-quickjs133126
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack-quickjs16000
✅ 🌐 Cross-language Conformance
AppPassedFailedSkipped
✅ python90132
✅ vercel-multi-region
AppPassedFailedSkipped
✅ nextjs-turbopack2700
📋 View full workflow run
@github-actions
github-actionsBot
commented
Aug 21, 2026

Copy link


Copy Markdown

Contributor
Sim World
Simulated world deterministic testing for races. Traces
🟠 world-sim scenario book — 1 fail of 41 total
fence=per-spec
scenariooutcomeeventsvirtreplayviolations
✅ smoke-no-stepscompleted30msok0
✅ smoke-one-stepcompleted60msok0
✅ hook-at-step-startedcompleted120msok0
✅ hook-at-step-completedcompleted120msok0
✅ hook-at-hook-createdcompleted120msok0
✅ deadline-hook-winscompleted71.0hok0
✅ deadline-expirescompleted71.0hok0
✅ long-sleepcompleted1130.0dok0
✅ hook-never-arrivesstalled30msskipped0
✅ step-retries-twicecompleted102.0sok0
✅ parallel-stepscompleted90msok0
✅ hook-on-execution-statecompleted120msok0
✅ peek-hook-before-branchcompleted120msok0
✅ peek-hook-after-branchcompleted120msok0
✅ peek-hook-at-registrationcompleted120msok0
✅ race-hook-before-probecompleted120msok0
✅ race-hook-after-probecompleted120msok0
✅ race-duplicate-deliverycompleted130msok0
✅ attr-hook-before-stepcompleted110msok0
✅ attr-hook-after-stepcompleted110msok0
✅ attr-from-step-bodycompleted130msok0
✅ fork-hook-after-timeoutcompleted141.0mok0
✅ fork-hook-before-timeoutcompleted141.0mok0
✅ count-hook-after-timeoutcompleted171.0mok0
✅ count-hook-before-timeoutcompleted201.0mok0
✅ stale-read-step-count-forkcompleted201.0mok0
✅ stale-read-equal-step-countscompleted141.0mok0
✅ step-vs-step-forkcompleted120msok0
✅ step-vs-step-fork-fencedcompleted120msok0
✅ fence-catches-benign-directioncompleted125msok0
✅ in-flight-before-decisioncompleted171.0mok0
❌ in-flight-before-decision-countedcompleted171.0mok0
✅ in-flight-after-decisioncompleted192.0mok0
✅ stale-read-step-count-fork-fencedcompleted201.0mok0
✅ fork-hook-winscompleted131.0mok0
✅ fork-timeout-winscompleted131.0mok0
✅ unclaimed-payload-under-forkcompleted171.0mok0
✅ claimed-payload-under-forkcompleted171.0mok0
✅ writers-independent-step-bodiescompleted120msok0
✅ writers-scripted-tempocompleted120msok0
✅ cancel-mid-stepcancelled70msskipped0
Full trace: world-sim.txt
@VaguelySeriousVaguelySerious
mentioned this pull request
Aug 21, 2026
 Merged

Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


No reviews


Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

1 participant

@shalabhc

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
[world-vercel] Isolate run-status long polls - #3709
Draft
shalabhc wants to merge 1 commit into
mainfrom 
deflake
Draft
[world-vercel] Isolate run-status long polls#3709
shalabhc wants to merge 1 commit into
mainfrom 
deflake
Conversation
@shalabhc
@shalabhcshalabhc
commented
Aug 21, 2026

Copy link


Copy Markdown

Collaborator
Summary
  • route held run-status requests through a dedicated connection pool
  • keep ordinary workflow-server traffic available while concurrent run.returnValue waits are open
  • apply the same isolation to the optional node:http transport and preserve explicit dispatcher overrides
Why
Main run 32413467237 failed 29 Vercel E2E lanes after #3570 enabled run-status long polling. Local, Postgres, Windows, and Python lanes stayed green.
The default world-vercel HTTP/1.1 agent has 8 connections. Concurrent E2E lanes peaked at 6-8 tests, and each run.returnValue can hold a status request for 50 seconds. Those waits consumed the default pool, starving the ordinary reads and hook/control calls needed for runs to complete. Failure artifacts consequently contain broad 30s/60s timeouts across unrelated tests and frameworks.
Test plan
  • pnpm --filter @workflow/world-vercel test (550 passed)
  • pnpm vitest run packages/core/src/runtime/run-return-value-long-poll.test.ts (17 passed)
  • pnpm turbo run typecheck --filter=@workflow/world-vercel
  • pnpm biome check packages/world-vercel/src/http-client.ts packages/world-vercel/src/utils.ts packages/world-vercel/src/runs.ts packages/world-vercel/src/http-client.test.ts .changeset/run-status-pool-isolation.md (no errors; existing makeRequest complexity warning only)
@vercel@shalabhc
[world-vercel] Isolate run-status long polls
4f2b4f6
Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>
@changeset-bot
changeset-botBot
commented
Aug 21, 2026

Copy link


Copy Markdown

🦋 Changeset detected
Latest commit: 4f2b4f6
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 17 packages
NameType
@workflow/world-vercelPatch
@workflow/cliPatch
@workflow/corePatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@vercel
vercelBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
The latest updates on your projects. Learn more about Vercel for GitHub.
ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreviewAug 21, 2026 6:21am
example-nextjs-workflow-webpackReadyReadyPreviewAug 21, 2026 6:21am
example-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-astro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-express-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-fastify-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-hono-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nestjs-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nitro-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-nuxt-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-python-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-sveltekit-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-tanstack-start-workflowReadyReadyPreviewAug 21, 2026 6:21am
workbench-vite-workflowReadyReadyPreviewAug 21, 2026 6:21am
workflow-docsReadyReadyPreview, v0Aug 21, 2026 6:21am
workflow-swc-playgroundReadyReadyPreviewAug 21, 2026 6:21am
workflow-tarballsReadyReadyPreviewAug 21, 2026 6:21am
workflow-webReadyReadyPreviewAug 21, 2026 6:21am
@github-actions
github-actionsBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
📊 Workflow Benchmarks
commit 4f2b4f6 · Fri, 21 Aug 2026 06:38:33 GMT · run logs
Backend: vercel · app: nextjs-turbopack
MetricScenarioBest (ms)P75 (ms)P90 (ms)P99 (ms)Samples
TTFSstep287 (-58%) 💚1302 🔴 (+26%) 🔻1329 🔴 (+20%) 🔻1505 🔴 (±0%)30
TTFSstream1196 (+335%) 🔻1275 🔴 (+17%) 🔻1291 🔴 (+18%) 🔻1304 🔴 (+15%)30
TTFShook + stream1459 (+14%)1577 🔴 (+10%)1644 🔴 (-1.1%)1863 🔴 (-60%) 💚30
Fan-out TTFSPromise.all(100 steps)550 (+26%) 🔻857 (+38%) 🔻872 (+30%) 🔻2012 (+2.8%)10
Fan-out TTLSPromise.all(100 steps)4653 (+6.1%)7332 (-2.2%)9518 (+24%) 🔻11255 (+28%) 🔻10
STSO1020 steps (inline)115 (-9.4%)197 (-19%) 💚249 (-13%)346 (-24%) 💚1019
WO1020 steps178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚178299 (-23%) 💚1
CRTTfirst chunk (pooled)85 (-3.4%)142 (+10%)179 (+19%) 🔻316 (-22%) 💚28
Streams
ScenarioCRTT 1stp75p90p99CDV maxiters
paced control (100/s, 60B)114 (+7%)117 (-5%)141 (-33%)257 (-49%)105 (-17%)10
size sweep (100/s, 160B-12KB)105 (+1%)117 (-11%)134 (-39%)278 (-48%)95.5 (-42%)10
replay gateway-gpt-5.4-nano-2000t (1x)178 (+31%)127 (-7%)340 (+67%)898 (+62%)143 (-1%)3
replay eve-gpt-5.6-sol-2000t (1x)134 (-47%)107 (-57%)138 (-90%)284 (-94%)417 (-82%)2
replay eve-gpt-5.6-sol-2000t (2x)139 (-7%)154 (-13%)226 (-28%)1058 (+9%)592 (+2%)3
📈 STSO distribution vs main (inline / queue-hop histograms)
1020 steps (inline)
Cumulative STSO time: main 231540ms → this run 177014ms (Δ -54526ms, -24%)
100-150 ms █░░░░░░░░░░░░░░░░░░░░░░┃ main 6 this 499 +493
150-200 ms ████████████┃████ main 344 this 271 -73
200-250 ms ██████┃███████████████ main 451 this 149 -302
250-300 ms ██┃████ main 144 this 66 -78
300-350 ms ┃█ main 45 this 24 -21
350-400 ms ┃ main 7 this 3 -4
400-450 ms ┃ main 10 this 1 -9
450-500 ms ┃ main 5 this 1 -4
500-550 ms ┃ main 1 this 2 +1
550-600 ms ┃ main 2 this 1 -1
600-650 ms ┃ main 1 this 1 +0
650-700 ms ┃ main 0 this 1 +1
700-750 ms ┃ main 2 this 0 -2
800-850 ms ┃ main 1 this 0 -1

📈 CRTT drill-down vs main (RTT distributions & profiles)
variant RTT 1ms→5s+ avg p50 p90 p99 n
control ······█▇▁···· 100.3 (-9%) 94 (-4%) 141 (-33%) 257 (-49%) 3000
sweep ······█▇▁···· 99.6 (-16%) 95 (-9%) 134 (-39%) 278 (-48%) 3000
gw 1x ·····▁█▇▁▁▁·· 118.6 (+6%) 98 (-1%) 340 (+67%) 898 (+62%) 5295
eve 1x ·····▁█▅▁▁··· 95.4 (-70%) 87 (-16%) 138 (-90%) 284 (-94%) 5186
eve 2x ·····▁▆█▂▁▁·· 135.3 (-12%) 109 (-14%) 226 (-28%) 1058 (+9%) 7779

RTT over stream progress (avg per tenth of stream, bars scaled min→max):
control █▃▃▄▆▃▄▂▃▁ 91–115ms
sweep █▄▃▃▃▃▁▃▄▂ 90–118ms
gw 1x ▅▃▁█▁▂▃▂▁▁ 94–200ms
eve 1x █▂▄▃▂▃▆▅▄▁ 79–121ms
eve 2x ▂▄█▂▁▂▃▃▂▂ 97–245ms

RTT by chunk size (avg per log size bin, ~160B → ~12KB serialized, bars scaled min→max):
sweep █▇▆▆▄▁▃ 97–102ms

Delivery jitter over stream progress (avg positive CDV per tenth of stream, bars scaled min→max):
control ▃▄▆██▁█▃▄▂ 26–33ms
sweep ▅▄▆█▆▇▃▂▇▁ 37–45ms
gw 1x █▄▁▃▂▂▄▁▁▁ 29–40ms
eve 1x ▇▁▃▁▄▄█▄█▇ 17–23ms
eve 2x ▃▇█▂▄▇▁▃▂▆ 19–24ms

ℹ️ Metric definitions & methodology
Streams: first-chunk RTT (the stream-open path, before any buffering/backpressure), CRTT percentiles, and worst delivery stall (CDV max). Cells are medians across iterations; per-run values in the artifacts. No 🔴/🟢 marks until targets attach.
The collapsed STSO distribution section above buckets every step gap, split inline (same warm process — pure framework overhead) vs queue-hop (fresh process — dispatch, reinit, replay). █ = main, ┃ = this run, ░ = fill.
The collapsed CRTT drill-down: per-variant RTT histograms (fixed log bins, · = empty) and mean RTT/positive-CDV profile lines over stream progress and chunk size. Histograms, avgs, and profiles merge exactly across runs; p50–p99 are percentile-of-percentiles. Per-index rows live in the artifacts.
Best/P75/P90/P99 deltas compare against the most recent benchmark run on main at the time of this run. 🔻 flags a delta worse than +15%, 💚 one better than −15%.
Metrics — TTFS: time to first step body (in-deployment start() → first step body) · Fan-out TTFS: fan-out time to first step (in-deployment start() → first of the parallel step bodies to complete) · Fan-out TTLS: fan-out time to last step (in-deployment start() → last of the parallel step bodies to complete, i.e. when the Promise.all resolves) · STSO: step-to-step overhead (gap between consecutive step bodies) · WO: workflow overhead (whole-run time outside step bodies, in-deployment anchored) · CRTT: chunk round-trip time (per-chunk write → read latency, one clock domain: deployment → stream backend → same deployment) · CDV: chunk delay variation / delivery jitter (inter-arrival gap minus inter-write gap per seq-adjacent pair; skew-free; the row is each run's MAX positive value, so one stall moves it)
Scenarios — step: one trivial no-op step, no stream; no hooks, so the run stays in turbo mode (in-process fast path) · stream: one streaming step; no hooks, so the run stays in turbo mode (in-process fast path) · hook + stream: registers a hook before one step, which exits turbo mode (dispatch path) · 1020 steps: 1020 trivial sequential steps; STSO is measured between consecutive steps in the given step ranges, and WO is the whole-run overhead outside step bodies · Promise.all(100 steps): 100 trivial no-op steps started together in a single Promise.all; Fan-out TTFS is the first of them to complete and Fan-out TTLS the last, both from the in-deployment clientStart, so their gap is the spread the runtime adds across the fan-out · paced control (100/s, 60B): the control: 300 tiny (~60B) deltas metronome-paced at 100/s — zero workload structure, so it reads the transport floor and flush cadence, and disambiguates transport-wide vs workload-specific when a replay row moves · size sweep (100/s, 160B-12KB): same pacing as the control with deltas padded in rotation across seven log-spaced sizes (~160B–12KB) — rotation decouples size from stream position, so it isolates whether chunk size causes latency · replay gateway-gpt-5.4-nano-2000t (1x): raw provider SSE cadence captured at the AI gateway boundary (gpt-5.4-nano, the most popular gateway model; per-token deltas p50 208B = the modal production chunk size), replayed exactly as measured — the typical customer's workload; its CDV is the typical customer's real delivery jitter · replay eve-gpt-5.6-sol-2000t (1x): a captured eve turn (gpt-5.6-sol, the most-used demanding eve model; ~2000 output tokens = production p50 turn length) replayed exactly as measured — eve's envelope protocol re-ships the cumulative message so sizes ramp 142B→13KB; the demanding outlier tenant's reality · replay eve-gpt-5.6-sol-2000t (2x): the same eve capture at 2x — the headroom/stress row; real fast-tier models emit the same chunk sizes at proportionally higher rate, so time compression is a faithful speed model · first chunk (pooled): every run's seq-0 RTT pooled across all stream scenarios — the first chunk precedes any workload differentiation, so pooling samples one shared stream-open path with exact percentiles
Replay cadences (semantic sha256) — eve-gpt-5.6-sol-2000teaf22f5946e7c61f3c65c7006d550df180cfabd4e706254a09f22aec0cfb420d · gateway-gpt-5.4-nano-2000t6f24ac518b6b83ff1d0e85a5fe78230db192716d66a7fc6b2fe022752001d041
🔴 marks a percentile over its target (within target is left unmarked). Targets (p75/p90/p99, ms) — TTFS 200/300/600
All timestamps are deployment-side; runs are triggered in-deployment, so the CI runner and api.vercel.com sit outside every measured window. TTFS = start() → first step body (includes dispatch + any cold start); Fan-out TTFS/TTLS = first/last step completion of one Promise.all from the same anchor (the gap is the runtime’s fan-out spread); STSO/WO between step bodies; CRTT inside the workflow (excludes the api.vercel.com read path).
Cold starts stay in the numbers (real bursty-workload latency, inflates P75+); Best is the warm floor.
@github-actions
github-actionsBot
commented
Aug 21, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
🧪 E2E Test Results
❌ Some tests failed
❌ Failed E2E Tests
▲ Vercel Production (225 failed)
astro-node (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
astro-quickjs (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
example-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
example-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
express-node (5 failed):
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
express-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
fastify-node (9 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
fastify-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
hono-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
hono-quickjs (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
nest-node (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nest-quickjs (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-turbopack-node (2 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
nextjs-turbopack-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-webpack-node (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nextjs-webpack-quickjs (7 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nitro-node (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nitro-quickjs (10 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nuxt-node (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
nuxt-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
sveltekit-node (8 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
sveltekit-quickjs (10 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes workflow throws after awaited setAttributes: attribute still persists on the failed run
tanstack-start-node (6 failed):
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
tanstack-start-quickjs (7 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
vite-node (5 failed):
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
vite-quickjs (11 failed):
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_41M0HFXBFZ0GJQ6CMCQCPP0JGG | 🔍 observability
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_41M0HFWDWB0GY6MY1HV69HMF6D | 🔍 observability
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_41M0HFXMN20GZ9WEKDY3PB77A9 | 🔍 observability
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable | wrun_41M0HFY70D0GWH3DRQAM2X8YJZ | 🔍 observability
  • setAttributes start: initial attributes are seeded on run creation
  • setAttributes start: reserved-prefix initial attributes are seeded with allowReservedAttributes
  • setAttributes setAttributesWorkflow: workflow-body calls append native attr_set events and merge correctly
  • setAttributes setAttributesInsideStepWorkflow: step-body calls append attributed native events
  • setAttributes fire-and-forget: void setAttributes lands without awaiting
  • setAttributes Promise.all of disjoint-key writes: every key lands
  • setAttributes validation DX: invalid writes throw catchable FatalErrors naming rule and limit
🐘 Local Postgres (1 failed)
vite-stable-quickjs (1 failed):
  • cancelRun via CLI - cancelling a running workflow | wrun_41M0HG37470GZP18JM4XZQH2Y9
⚠️ Flaky E2E Tests (passed on retry)
These tests failed at least once and passed on a retry. A recurring entry here is a real race worth investigating.
28 flaky tests
  • cancelRun via CLI - cancelling a running workflow (hono)
  • cancelRun via CLI - cancelling a running workflow (nextjs-turbopack)
  • cancelRun via CLI - cancelling a running workflow (vite)
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously (example)
  • cross-file step error preserves message and function names in stack (astro)
  • fire-and-forget: void setAttributes lands without awaiting (nextjs-turbopack)
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data (nextjs-webpack)
  • hookCleanupTestWorkflow - hook token reuse after workflow completion (vite)
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps (nextjs-webpack)
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered (nextjs-webpack)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (express)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (sveltekit)
  • hookMinRetentionWorkflow - terminal Hook cannot resume and its token stays unavailable (tanstack-start)
  • Promise.all of disjoint-key writes: every key lands (fastify)
  • Promise.all of disjoint-key writes: every key lands (hono)
  • Promise.all of disjoint-key writes: every key lands (nuxt)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (astro)
  • setAttributesInsideStepWorkflow: step-body calls append attributed native events (vite)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (example)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (hono)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (nextjs-turbopack)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (sveltekit)
  • validation DX: invalid writes throw catchable FatalErrors naming rule and limit (vite)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (fastify)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (hono)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nest)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nextjs-webpack)
  • workflow throws after awaited setAttributes: attribute still persists on the failed run (nitro)
🛠 Infra Events (absorbed by the harness)
Platform anomalies the e2e harness detected and worked around (e.g. a run the queue never picked up, replaced by a fresh run). Clustered timestamps indicate a backend blip; a steady drip indicates a platform issue worth escalating.
  • run-pickup-stall · Calculator.calculate - static workflow method using static step methods from another class (tanstack-start) · at 06:24:33Z · abandoned wrun_01M0HFVR2VDKZ1S5XAYGFR2TZF
E2E Test Summary
Summary
PassedFailedSkippedTotal
❌ ▲ Vercel Production33532257424320
✅ 💻 Local Development392205584480
✅ 📦 Local Production392205584480
❌ 🐘 Local Postgres392115584480
✅ 🪟 Windows16000160
✅ 🌐 Cross-language Conformance90132141
✅ vercel-multi-region270027
Total15314226254818088
Details by Category
❌ ▲ Vercel Production
AppPassedFailedSkipped
❌ astro-node123928
❌ astro-quickjs123928
❌ example-node124828
❌ example-quickjs1211128
❌ express-node127528
❌ express-quickjs1211128
❌ fastify-node123928
❌ fastify-quickjs1211128
❌ hono-node124828
❌ hono-quickjs124828
❌ nest-node1211128
❌ nest-quickjs124828
❌ nextjs-turbopack-node15523
❌ nextjs-turbopack-quickjs147103
❌ nextjs-webpack-node147103
❌ nextjs-webpack-quickjs15073
❌ nitro-node1221028
❌ nitro-quickjs1221028
❌ nuxt-node1211128
❌ nuxt-quickjs1221028
✅ python-node80152
❌ sveltekit-node14389
❌ sveltekit-quickjs141109
❌ tanstack-start-node126628
❌ tanstack-start-quickjs125728
❌ vite-node127528
❌ vite-quickjs1211128
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
✅ vite-stable-quickjs134026
❌ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable-node134026
✅ astro-stable-quickjs134026
✅ express-stable-node134026
✅ express-stable-quickjs134026
✅ fastify-stable-node134026
✅ fastify-stable-quickjs134026
✅ hono-stable-node134026
✅ hono-stable-quickjs134026
✅ nest-stable-node134026
✅ nest-stable-quickjs134026
✅ nextjs-turbopack-canary-node141019
✅ nextjs-turbopack-canary-quickjs141019
✅ nextjs-turbopack-stable-node16000
✅ nextjs-turbopack-stable-quickjs16000
✅ nextjs-webpack-canary-node141019
✅ nextjs-webpack-canary-quickjs141019
✅ nextjs-webpack-stable-node16000
✅ nextjs-webpack-stable-quickjs16000
✅ nitro-stable-node134026
✅ nitro-stable-quickjs134026
✅ nuxt-stable-node134026
✅ nuxt-stable-quickjs134026
✅ sveltekit-stable-node15307
✅ sveltekit-stable-quickjs15307
✅ tanstack-start-node134026
✅ tanstack-start-quickjs134026
✅ vite-stable-node134026
❌ vite-stable-quickjs133126
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack-quickjs16000
✅ 🌐 Cross-language Conformance
AppPassedFailedSkipped
✅ python90132
✅ vercel-multi-region
AppPassedFailedSkipped
✅ nextjs-turbopack2700
📋 View full workflow run
@github-actions
github-actionsBot
commented
Aug 21, 2026

Copy link


Copy Markdown

Contributor
Sim World
Simulated world deterministic testing for races. Traces
🟠 world-sim scenario book — 1 fail of 41 total
fence=per-spec
scenariooutcomeeventsvirtreplayviolations
✅ smoke-no-stepscompleted30msok0
✅ smoke-one-stepcompleted60msok0
✅ hook-at-step-startedcompleted120msok0
✅ hook-at-step-completedcompleted120msok0
✅ hook-at-hook-createdcompleted120msok0
✅ deadline-hook-winscompleted71.0hok0
✅ deadline-expirescompleted71.0hok0
✅ long-sleepcompleted1130.0dok0
✅ hook-never-arrivesstalled30msskipped0
✅ step-retries-twicecompleted102.0sok0
✅ parallel-stepscompleted90msok0
✅ hook-on-execution-statecompleted120msok0
✅ peek-hook-before-branchcompleted120msok0
✅ peek-hook-after-branchcompleted120msok0
✅ peek-hook-at-registrationcompleted120msok0
✅ race-hook-before-probecompleted120msok0
✅ race-hook-after-probecompleted120msok0
✅ race-duplicate-deliverycompleted130msok0
✅ attr-hook-before-stepcompleted110msok0
✅ attr-hook-after-stepcompleted110msok0
✅ attr-from-step-bodycompleted130msok0
✅ fork-hook-after-timeoutcompleted141.0mok0
✅ fork-hook-before-timeoutcompleted141.0mok0
✅ count-hook-after-timeoutcompleted171.0mok0
✅ count-hook-before-timeoutcompleted201.0mok0
✅ stale-read-step-count-forkcompleted201.0mok0
✅ stale-read-equal-step-countscompleted141.0mok0
✅ step-vs-step-forkcompleted120msok0
✅ step-vs-step-fork-fencedcompleted120msok0
✅ fence-catches-benign-directioncompleted125msok0
✅ in-flight-before-decisioncompleted171.0mok0
❌ in-flight-before-decision-countedcompleted171.0mok0
✅ in-flight-after-decisioncompleted192.0mok0
✅ stale-read-step-count-fork-fencedcompleted201.0mok0
✅ fork-hook-winscompleted131.0mok0
✅ fork-timeout-winscompleted131.0mok0
✅ unclaimed-payload-under-forkcompleted171.0mok0
✅ claimed-payload-under-forkcompleted171.0mok0
✅ writers-independent-step-bodiescompleted120msok0
✅ writers-scripted-tempocompleted120msok0
✅ cancel-mid-stepcancelled70msskipped0
Full trace: world-sim.txt
@VaguelySeriousVaguelySerious
mentioned this pull request
Aug 21, 2026
 Merged

Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


No reviews


Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

1 participant

@shalabhc