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Rollup of 2 pull requests - #148022

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bors merged 5 commits into
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Oct 23, 2025
Merged

Rollup of 2 pull requests#148022
bors merged 5 commits into
rust-lang:masterfrom
Zalathar:rollup-3m6ty9u

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@ZalatharZalathar commented Oct 23, 2025•
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Successful merges:

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@rustbot modify labels: rollup

Create a similar rollup

joshlfand others added 5 commits September 21, 2025 04:29
@joshlf@RalfJung@traviscross
Document MaybeUninit bit validity
7971b2a
Co-authored-by: Ralf Jung <post@ralfj.de>
Edited-by: TC
@traviscross
Revise MaybeUninit validity documentation
11627f0
Let's rewrite this for better clarity. In particular, let's document
our language guarantees upfront and in positive form. We'll then list
the caveats and the non-guarantees after.
@simp4t7
add TidyFlags and merge DiagCtx
dbeb7fa
reorder impl block
changed is_bless to is_bless_enabled
@Zalathar
Rollup merge ofrust-lang#140463- joshlf:patch-13, r=RalfJung
c5e4a5f
Document MaybeUninit bit validity
Partially addresses rust-lang/unsafe-code-guidelines#555 by clarifying that it is sound to write any byte values (initialized or uninitialized) to any `MaybeUninit<T>` regardless of `T`.
r? `@RalfJung`
@Zalathar
Rollup merge ofrust-lang#148017- simp4t7:add-tidy-flags, r=Kobzol
5ff30d3
Add TidyFlags and merge DiagCtx
Adds a struct `TidyFlags` and merges it with `DiagCtx` into `TidyCtx`. Removes the need to pass `bless` into individual check functions in tidy.
@rustbotrustbot added A-tidy Area: The tidy tool S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-libs Relevant to the library team, which will review and decide on the PR/issue. rollup A PR which is a rollup labels Oct 23, 2025
@Zalathar

Zalathar commented Oct 23, 2025

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Rollup of everything not in #148014.

@bors r+ rollup=never p=5

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📌 Commit 5ff30d3 has been approved by Zalathar

It is now in the queue for this repository.

@borsbors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Oct 23, 2025
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⌛ Testing commit 5ff30d3 with merge 11d2046...

@bors

bors commented Oct 23, 2025

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☀️ Test successful - checks-actions
Approved by: Zalathar
Pushing 11d2046 to master...

@borsbors added the merged-by-bors This PR was explicitly merged by bors. label Oct 23, 2025
@bors
bors merged commit 11d2046 into rust-lang:masterOct 23, 2025
12 checks passed
@rustbotrustbot added this to the 1.92.0 milestone Oct 23, 2025
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📌 Perf builds for each rolled up PR:

PR#MessagePerf Build Sha
#140463Document MaybeUninit bit validity41f21b40a0062dea51fc0993001b723499c6f607 (link)
#148017Add TidyFlags and merge DiagCtxa8f2ac052078ab066dcb35489f0a6f9a92d415a9 (link)

previous master: 469357eb48

In the case of a perf regression, run the following command for each PR you suspect might be the cause: @rust-timer build $SHA

@github-actions

github-actionsBot commented Oct 23, 2025

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What is this? This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.

Comparing 469357e (parent) -> 11d2046 (this PR)

Test differences

Show 160 test diffs

160 doctest diffs were found. These are ignored, as they are noisy.

Test dashboard

Run

cargo run --manifest-path src/ci/citool/Cargo.toml -- \
test-dashboard 11d2046fe9962720558cb15f72541f7fd170dec9 --output-dir test-dashboard

And then open test-dashboard/index.html in your browser to see an overview of all executed tests.

Job duration changes

  1. aarch64-gnu-llvm-20-2: 2576.2s -> 2164.0s (-16.0%)
  2. dist-x86_64-apple: 8250.5s -> 7072.6s (-14.3%)
  3. aarch64-gnu-llvm-20-1: 4003.6s -> 3433.6s (-14.2%)
  4. i686-gnu-2: 6364.5s -> 5554.2s (-12.7%)
  5. dist-aarch64-apple: 7136.7s -> 6319.1s (-11.5%)
  6. x86_64-gnu-gcc: 3462.7s -> 3071.2s (-11.3%)
  7. x86_64-gnu-llvm-20: 2726.5s -> 2449.4s (-10.2%)
  8. x86_64-gnu-miri: 4797.9s -> 4332.9s (-9.7%)
  9. x86_64-rust-for-linux: 2980.6s -> 2693.4s (-9.6%)
  10. x86_64-gnu-tools: 3597.2s -> 3267.6s (-9.2%)
How to interpret the job duration changes?

Job durations can vary a lot, based on the actual runner instance
that executed the job, system noise, invalidated caches, etc. The table above is provided
mostly for t-infra members, for simpler debugging of potential CI slow-downs.

@rust-timer

rust-timer commented Oct 23, 2025

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Finished benchmarking commit (11d2046): comparison URL.

Overall result: ✅ improvements - no action needed

@rustbot label: -perf-regression

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

meanrangecount
Regressions ❌
(primary)		--0
Regressions ❌
(secondary)		--0
Improvements ✅
(primary)		--0
Improvements ✅
(secondary)		-0.1%[-0.1%, -0.1%]1
All ❌✅ (primary)--0

Max RSS (memory usage)

This benchmark run did not return any relevant results for this metric.

Cycles

Results (secondary 3.0%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

meanrangecount
Regressions ❌
(primary)		--0
Regressions ❌
(secondary)		3.5%[1.7%, 5.6%]11
Improvements ✅
(primary)		--0
Improvements ✅
(secondary)		-2.4%[-2.4%, -2.4%]1
All ❌✅ (primary)--0

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 474.879s -> 474.995s (0.02%)
Artifact size: 390.43 MiB -> 390.51 MiB (0.02%)

@Zalathar
Zalathar deleted the rollup-3m6ty9u branch October 23, 2025 22:39
@github-actionsgithub-actionsBot mentioned this pull request Oct 30, 2025
Closed
github-actionsBot pushed a commit to model-checking/verify-rust-std that referenced this pull request Nov 30, 2025
@bors
Auto merge ofrust-lang#148022- Zalathar:rollup-3m6ty9u, r=Zalathar
ac412f5
Rollup of 2 pull requests
Successful merges:
- rust-lang#140463 (Document MaybeUninit bit validity)
- rust-lang#148017 (Add TidyFlags and merge DiagCtx)
r? `@ghost`
`@rustbot` modify labels: rollup
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A-tidyArea: The tidy toolmerged-by-borsThis PR was explicitly merged by bors.rollupA PR which is a rollupS-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)T-libsRelevant to the library team, which will review and decide on the PR/issue.

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Development

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7 participants

@Zalathar@bors@rust-timer@rustbot@joshlf@traviscross@simp4t7
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btn.textContent = 'Copy';
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;';
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var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
Rollup of 2 pull requests by Zalathar · Pull Request #148022 · rust-lang/rust · GitHub
Skip to content
Rollup of 2 pull requests - #148022
Merged
bors merged 5 commits into
rust-lang:masterfrom 
Zalathar:rollup-3m6ty9u
Oct 23, 2025
Merged
Rollup of 2 pull requests#148022
bors merged 5 commits into
rust-lang:masterfrom 
Zalathar:rollup-3m6ty9u
Conversation
@Zalathar
@ZalatharZalathar
commented
Oct 23, 2025•

edited by rustbot

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Successful merges:
r? @ghost
@rustbot modify labels: rollup
Create a similar rollup
joshlfand others
added 5 commits
September 21, 2025 04:29
@joshlf@RalfJung@traviscross
Document MaybeUninit bit validity
7971b2a
Co-authored-by: Ralf Jung <post@ralfj.de>
Edited-by: TC
@traviscross
Revise MaybeUninit validity documentation
11627f0
Let's rewrite this for better clarity. In particular, let's document
our language guarantees upfront and in positive form. We'll then list
the caveats and the non-guarantees after.
@simp4t7
add TidyFlags and merge DiagCtx
dbeb7fa
reorder impl block
changed is_bless to is_bless_enabled
@Zalathar
Rollup merge ofrust-lang#140463- joshlf:patch-13, r=RalfJung
c5e4a5f
Document MaybeUninit bit validity
Partially addresses rust-lang/unsafe-code-guidelines#555 by clarifying that it is sound to write any byte values (initialized or uninitialized) to any `MaybeUninit<T>` regardless of `T`.
r? `@RalfJung`
@Zalathar
Rollup merge ofrust-lang#148017- simp4t7:add-tidy-flags, r=Kobzol
5ff30d3
Add TidyFlags and merge DiagCtx
Adds a struct `TidyFlags` and merges it with `DiagCtx` into `TidyCtx`. Removes the need to pass `bless` into individual check functions in tidy.
@rustbotrustbot
added

A-tidy
Area: The tidy tool
S-waiting-on-review
Status: Awaiting review from the assignee but also interested parties.
T-bootstrap
Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
T-libs
Relevant to the library team, which will review and decide on the PR/issue.
rollup
A PR which is a rollup
labels
Oct 23, 2025
@Zalathar
Zalathar
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Oct 23, 2025

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Rollup of everything not in #148014.
@bors r+ rollup=never p=5
@bors
bors
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Oct 23, 2025

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📌 Commit 5ff30d3 has been approved by Zalathar
It is now in the queue for this repository.
@borsbors
added

S-waiting-on-bors
Status: Waiting on bors to run and complete tests. Bors will change the label on completion.
and removed

S-waiting-on-review
Status: Awaiting review from the assignee but also interested parties.
labels
Oct 23, 2025
@bors
bors
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Oct 23, 2025

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⌛ Testing commit 5ff30d3 with merge 11d2046...
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bors
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☀️ Test successful - checks-actions

Approved by: Zalathar

Pushing 11d2046 to master...
@borsbors
added
the 
merged-by-bors
This PR was explicitly merged by bors.
label
Oct 23, 2025
@bors
bors
merged commit 11d2046
into
rust-lang:masterOct 23, 2025

12 checks passed

@rustbotrustbot
added this to the 1.92.0 milestone
Oct 23, 2025
@rust-timer
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Oct 23, 2025

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📌 Perf builds for each rolled up PR:
PR#MessagePerf Build Sha
#140463Document MaybeUninit bit validity41f21b40a0062dea51fc0993001b723499c6f607 (link)
#148017Add TidyFlags and merge DiagCtxa8f2ac052078ab066dcb35489f0a6f9a92d415a9 (link)
previous master: 469357eb48
In the case of a perf regression, run the following command for each PR you suspect might be the cause: @rust-timer build $SHA
@github-actions
github-actionsBot
commented
Oct 23, 2025

Copy link


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Contributor
What is this?
This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.

Comparing 469357e (parent) -> 11d2046 (this PR)
Test differences
Show 160 test diffs

160 doctest diffs were found. These are ignored, as they are noisy.
Test dashboard
Run
cargo run --manifest-path src/ci/citool/Cargo.toml -- \
test-dashboard 11d2046fe9962720558cb15f72541f7fd170dec9 --output-dir test-dashboard
And then open test-dashboard/index.html in your browser to see an overview of all executed tests.
Job duration changes
  1. aarch64-gnu-llvm-20-2: 2576.2s -> 2164.0s (-16.0%)
  2. dist-x86_64-apple: 8250.5s -> 7072.6s (-14.3%)
  3. aarch64-gnu-llvm-20-1: 4003.6s -> 3433.6s (-14.2%)
  4. i686-gnu-2: 6364.5s -> 5554.2s (-12.7%)
  5. dist-aarch64-apple: 7136.7s -> 6319.1s (-11.5%)
  6. x86_64-gnu-gcc: 3462.7s -> 3071.2s (-11.3%)
  7. x86_64-gnu-llvm-20: 2726.5s -> 2449.4s (-10.2%)
  8. x86_64-gnu-miri: 4797.9s -> 4332.9s (-9.7%)
  9. x86_64-rust-for-linux: 2980.6s -> 2693.4s (-9.6%)
  10. x86_64-gnu-tools: 3597.2s -> 3267.6s (-9.2%)
How to interpret the job duration changes?
Job durations can vary a lot, based on the actual runner instance

that executed the job, system noise, invalidated caches, etc. The table above is provided

mostly for t-infra members, for simpler debugging of potential CI slow-downs.
@rust-timer
rust-timer
commented
Oct 23, 2025

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Finished benchmarking commit (11d2046): comparison URL.
Overall result: ✅ improvements - no action needed
@rustbot label: -perf-regression
Instruction count
Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.
meanrangecount
Regressions ❌ 
 (primary)		--0
Regressions ❌ 
 (secondary)		--0
Improvements ✅ 
 (primary)		--0
Improvements ✅ 
 (secondary)		-0.1%[-0.1%, -0.1%]1
All ❌✅ (primary)--0
Max RSS (memory usage)
This benchmark run did not return any relevant results for this metric.
Cycles
Results (secondary 3.0%)
A less reliable metric. May be of interest, but not used to determine the overall result above.
meanrangecount
Regressions ❌ 
 (primary)		--0
Regressions ❌ 
 (secondary)		3.5%[1.7%, 5.6%]11
Improvements ✅ 
 (primary)		--0
Improvements ✅ 
 (secondary)		-2.4%[-2.4%, -2.4%]1
All ❌✅ (primary)--0
Binary size
This benchmark run did not return any relevant results for this metric.
Bootstrap: 474.879s -> 474.995s (0.02%)
Artifact size: 390.43 MiB -> 390.51 MiB (0.02%)
@Zalathar
Zalathar
deleted the

rollup-3m6ty9u

branch
October 23, 2025 22:39
@github-actionsgithub-actionsBot
mentioned this pull request
Oct 30, 2025
 Closed

github-actionsBot
pushed a commit
to model-checking/verify-rust-std
that referenced
this pull request
Nov 30, 2025
@bors
Auto merge ofrust-lang#148022- Zalathar:rollup-3m6ty9u, r=Zalathar
ac412f5
Rollup of 2 pull requests
Successful merges:
- rust-lang#140463 (Document MaybeUninit bit validity)
- rust-lang#148017 (Add TidyFlags and merge DiagCtx)
r? `@ghost`
`@rustbot` modify labels: rollup
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A-tidyArea: The tidy toolmerged-by-borsThis PR was explicitly merged by bors.rollupA PR which is a rollupS-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)T-libsRelevant to the library team, which will review and decide on the PR/issue.

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Development

Successfully merging this pull request may close these issues.

7 participants

@Zalathar@bors@rust-timer@rustbot@joshlf@traviscross@simp4t7

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Rollup of 2 pull requests by Zalathar · Pull Request #148022 · rust-lang/rust · GitHub
Skip to content
Rollup of 2 pull requests - #148022
Merged
bors merged 5 commits into
rust-lang:masterfrom 
Zalathar:rollup-3m6ty9u
Oct 23, 2025
Merged
Rollup of 2 pull requests#148022
bors merged 5 commits into
rust-lang:masterfrom 
Zalathar:rollup-3m6ty9u
Conversation
@Zalathar
@ZalatharZalathar
commented
Oct 23, 2025•

edited by rustbot

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Successful merges:
r? @ghost
@rustbot modify labels: rollup
Create a similar rollup
joshlfand others
added 5 commits
September 21, 2025 04:29
@joshlf@RalfJung@traviscross
Document MaybeUninit bit validity
7971b2a
Co-authored-by: Ralf Jung <post@ralfj.de>
Edited-by: TC
@traviscross
Revise MaybeUninit validity documentation
11627f0
Let's rewrite this for better clarity. In particular, let's document
our language guarantees upfront and in positive form. We'll then list
the caveats and the non-guarantees after.
@simp4t7
add TidyFlags and merge DiagCtx
dbeb7fa
reorder impl block
changed is_bless to is_bless_enabled
@Zalathar
Rollup merge ofrust-lang#140463- joshlf:patch-13, r=RalfJung
c5e4a5f
Document MaybeUninit bit validity
Partially addresses rust-lang/unsafe-code-guidelines#555 by clarifying that it is sound to write any byte values (initialized or uninitialized) to any `MaybeUninit<T>` regardless of `T`.
r? `@RalfJung`
@Zalathar
Rollup merge ofrust-lang#148017- simp4t7:add-tidy-flags, r=Kobzol
5ff30d3
Add TidyFlags and merge DiagCtx
Adds a struct `TidyFlags` and merges it with `DiagCtx` into `TidyCtx`. Removes the need to pass `bless` into individual check functions in tidy.
@rustbotrustbot
added

A-tidy
Area: The tidy tool
S-waiting-on-review
Status: Awaiting review from the assignee but also interested parties.
T-bootstrap
Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
T-libs
Relevant to the library team, which will review and decide on the PR/issue.
rollup
A PR which is a rollup
labels
Oct 23, 2025
@Zalathar
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commented
Oct 23, 2025

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Rollup of everything not in #148014.
@bors r+ rollup=never p=5
@bors
bors
commented
Oct 23, 2025

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📌 Commit 5ff30d3 has been approved by Zalathar
It is now in the queue for this repository.
@borsbors
added

S-waiting-on-bors
Status: Waiting on bors to run and complete tests. Bors will change the label on completion.
and removed

S-waiting-on-review
Status: Awaiting review from the assignee but also interested parties.
labels
Oct 23, 2025
@bors
bors
commented
Oct 23, 2025

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⌛ Testing commit 5ff30d3 with merge 11d2046...
@bors
bors
commented
Oct 23, 2025

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☀️ Test successful - checks-actions

Approved by: Zalathar

Pushing 11d2046 to master...
@borsbors
added
the 
merged-by-bors
This PR was explicitly merged by bors.
label
Oct 23, 2025
@bors
bors
merged commit 11d2046
into
rust-lang:masterOct 23, 2025

12 checks passed

@rustbotrustbot
added this to the 1.92.0 milestone
Oct 23, 2025
@rust-timer
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Oct 23, 2025

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📌 Perf builds for each rolled up PR:
PR#MessagePerf Build Sha
#140463Document MaybeUninit bit validity41f21b40a0062dea51fc0993001b723499c6f607 (link)
#148017Add TidyFlags and merge DiagCtxa8f2ac052078ab066dcb35489f0a6f9a92d415a9 (link)
previous master: 469357eb48
In the case of a perf regression, run the following command for each PR you suspect might be the cause: @rust-timer build $SHA
@github-actions
github-actionsBot
commented
Oct 23, 2025

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Contributor
What is this?
This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.

Comparing 469357e (parent) -> 11d2046 (this PR)
Test differences
Show 160 test diffs

160 doctest diffs were found. These are ignored, as they are noisy.
Test dashboard
Run
cargo run --manifest-path src/ci/citool/Cargo.toml -- \
test-dashboard 11d2046fe9962720558cb15f72541f7fd170dec9 --output-dir test-dashboard
And then open test-dashboard/index.html in your browser to see an overview of all executed tests.
Job duration changes
  1. aarch64-gnu-llvm-20-2: 2576.2s -> 2164.0s (-16.0%)
  2. dist-x86_64-apple: 8250.5s -> 7072.6s (-14.3%)
  3. aarch64-gnu-llvm-20-1: 4003.6s -> 3433.6s (-14.2%)
  4. i686-gnu-2: 6364.5s -> 5554.2s (-12.7%)
  5. dist-aarch64-apple: 7136.7s -> 6319.1s (-11.5%)
  6. x86_64-gnu-gcc: 3462.7s -> 3071.2s (-11.3%)
  7. x86_64-gnu-llvm-20: 2726.5s -> 2449.4s (-10.2%)
  8. x86_64-gnu-miri: 4797.9s -> 4332.9s (-9.7%)
  9. x86_64-rust-for-linux: 2980.6s -> 2693.4s (-9.6%)
  10. x86_64-gnu-tools: 3597.2s -> 3267.6s (-9.2%)
How to interpret the job duration changes?
Job durations can vary a lot, based on the actual runner instance

that executed the job, system noise, invalidated caches, etc. The table above is provided

mostly for t-infra members, for simpler debugging of potential CI slow-downs.
@rust-timer
rust-timer
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Oct 23, 2025

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Finished benchmarking commit (11d2046): comparison URL.
Overall result: ✅ improvements - no action needed
@rustbot label: -perf-regression
Instruction count
Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.
meanrangecount
Regressions ❌ 
 (primary)		--0
Regressions ❌ 
 (secondary)		--0
Improvements ✅ 
 (primary)		--0
Improvements ✅ 
 (secondary)		-0.1%[-0.1%, -0.1%]1
All ❌✅ (primary)--0
Max RSS (memory usage)
This benchmark run did not return any relevant results for this metric.
Cycles
Results (secondary 3.0%)
A less reliable metric. May be of interest, but not used to determine the overall result above.
meanrangecount
Regressions ❌ 
 (primary)		--0
Regressions ❌ 
 (secondary)		3.5%[1.7%, 5.6%]11
Improvements ✅ 
 (primary)		--0
Improvements ✅ 
 (secondary)		-2.4%[-2.4%, -2.4%]1
All ❌✅ (primary)--0
Binary size
This benchmark run did not return any relevant results for this metric.
Bootstrap: 474.879s -> 474.995s (0.02%)
Artifact size: 390.43 MiB -> 390.51 MiB (0.02%)
@Zalathar
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Oct 30, 2025
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@bors
Auto merge ofrust-lang#148022- Zalathar:rollup-3m6ty9u, r=Zalathar
ac412f5
Rollup of 2 pull requests
Successful merges:
- rust-lang#140463 (Document MaybeUninit bit validity)
- rust-lang#148017 (Add TidyFlags and merge DiagCtx)
r? `@ghost`
`@rustbot` modify labels: rollup
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@Zalathar@bors@rust-timer@rustbot@joshlf@traviscross@simp4t7

, 'i');
if (__m === '*' || __re.test(location.href)) {
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(function() {
var ref = document.referrer;
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} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Rollup of 2 pull requests by Zalathar · Pull Request #148022 · rust-lang/rust · GitHub
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Rollup of 2 pull requests - #148022
Merged
bors merged 5 commits into
rust-lang:masterfrom 
Zalathar:rollup-3m6ty9u
Oct 23, 2025
Merged
Rollup of 2 pull requests#148022
bors merged 5 commits into
rust-lang:masterfrom 
Zalathar:rollup-3m6ty9u
Conversation
@Zalathar
@ZalatharZalathar
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Oct 23, 2025•

edited by rustbot

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Successful merges:
r? @ghost
@rustbot modify labels: rollup
Create a similar rollup
joshlfand others
added 5 commits
September 21, 2025 04:29
@joshlf@RalfJung@traviscross
Document MaybeUninit bit validity
7971b2a
Co-authored-by: Ralf Jung <post@ralfj.de>
Edited-by: TC
@traviscross
Revise MaybeUninit validity documentation
11627f0
Let's rewrite this for better clarity. In particular, let's document
our language guarantees upfront and in positive form. We'll then list
the caveats and the non-guarantees after.
@simp4t7
add TidyFlags and merge DiagCtx
dbeb7fa
reorder impl block
changed is_bless to is_bless_enabled
@Zalathar
Rollup merge ofrust-lang#140463- joshlf:patch-13, r=RalfJung
c5e4a5f
Document MaybeUninit bit validity
Partially addresses rust-lang/unsafe-code-guidelines#555 by clarifying that it is sound to write any byte values (initialized or uninitialized) to any `MaybeUninit<T>` regardless of `T`.
r? `@RalfJung`
@Zalathar
Rollup merge ofrust-lang#148017- simp4t7:add-tidy-flags, r=Kobzol
5ff30d3
Add TidyFlags and merge DiagCtx
Adds a struct `TidyFlags` and merges it with `DiagCtx` into `TidyCtx`. Removes the need to pass `bless` into individual check functions in tidy.
@rustbotrustbot
added

A-tidy
Area: The tidy tool
S-waiting-on-review
Status: Awaiting review from the assignee but also interested parties.
T-bootstrap
Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
T-libs
Relevant to the library team, which will review and decide on the PR/issue.
rollup
A PR which is a rollup
labels
Oct 23, 2025
@Zalathar
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Oct 23, 2025

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Rollup of everything not in #148014.
@bors r+ rollup=never p=5
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Oct 23, 2025

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📌 Commit 5ff30d3 has been approved by Zalathar
It is now in the queue for this repository.
@borsbors
added

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Status: Waiting on bors to run and complete tests. Bors will change the label on completion.
and removed

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Status: Awaiting review from the assignee but also interested parties.
labels
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⌛ Testing commit 5ff30d3 with merge 11d2046...
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☀️ Test successful - checks-actions

Approved by: Zalathar

Pushing 11d2046 to master...
@borsbors
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merged-by-bors
This PR was explicitly merged by bors.
label
Oct 23, 2025
@bors
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merged commit 11d2046
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12 checks passed

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added this to the 1.92.0 milestone
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📌 Perf builds for each rolled up PR:
PR#MessagePerf Build Sha
#140463Document MaybeUninit bit validity41f21b40a0062dea51fc0993001b723499c6f607 (link)
#148017Add TidyFlags and merge DiagCtxa8f2ac052078ab066dcb35489f0a6f9a92d415a9 (link)
previous master: 469357eb48
In the case of a perf regression, run the following command for each PR you suspect might be the cause: @rust-timer build $SHA
@github-actions
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Oct 23, 2025

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What is this?
This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.

Comparing 469357e (parent) -> 11d2046 (this PR)
Test differences
Show 160 test diffs

160 doctest diffs were found. These are ignored, as they are noisy.
Test dashboard
Run
cargo run --manifest-path src/ci/citool/Cargo.toml -- \
test-dashboard 11d2046fe9962720558cb15f72541f7fd170dec9 --output-dir test-dashboard
And then open test-dashboard/index.html in your browser to see an overview of all executed tests.
Job duration changes
  1. aarch64-gnu-llvm-20-2: 2576.2s -> 2164.0s (-16.0%)
  2. dist-x86_64-apple: 8250.5s -> 7072.6s (-14.3%)
  3. aarch64-gnu-llvm-20-1: 4003.6s -> 3433.6s (-14.2%)
  4. i686-gnu-2: 6364.5s -> 5554.2s (-12.7%)
  5. dist-aarch64-apple: 7136.7s -> 6319.1s (-11.5%)
  6. x86_64-gnu-gcc: 3462.7s -> 3071.2s (-11.3%)
  7. x86_64-gnu-llvm-20: 2726.5s -> 2449.4s (-10.2%)
  8. x86_64-gnu-miri: 4797.9s -> 4332.9s (-9.7%)
  9. x86_64-rust-for-linux: 2980.6s -> 2693.4s (-9.6%)
  10. x86_64-gnu-tools: 3597.2s -> 3267.6s (-9.2%)
How to interpret the job duration changes?
Job durations can vary a lot, based on the actual runner instance

that executed the job, system noise, invalidated caches, etc. The table above is provided

mostly for t-infra members, for simpler debugging of potential CI slow-downs.
@rust-timer
rust-timer
commented
Oct 23, 2025

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Finished benchmarking commit (11d2046): comparison URL.
Overall result: ✅ improvements - no action needed
@rustbot label: -perf-regression
Instruction count
Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.
meanrangecount
Regressions ❌ 
 (primary)		--0
Regressions ❌ 
 (secondary)		--0
Improvements ✅ 
 (primary)		--0
Improvements ✅ 
 (secondary)		-0.1%[-0.1%, -0.1%]1
All ❌✅ (primary)--0
Max RSS (memory usage)
This benchmark run did not return any relevant results for this metric.
Cycles
Results (secondary 3.0%)
A less reliable metric. May be of interest, but not used to determine the overall result above.
meanrangecount
Regressions ❌ 
 (primary)		--0
Regressions ❌ 
 (secondary)		3.5%[1.7%, 5.6%]11
Improvements ✅ 
 (primary)		--0
Improvements ✅ 
 (secondary)		-2.4%[-2.4%, -2.4%]1
All ❌✅ (primary)--0
Binary size
This benchmark run did not return any relevant results for this metric.
Bootstrap: 474.879s -> 474.995s (0.02%)
Artifact size: 390.43 MiB -> 390.51 MiB (0.02%)
@Zalathar
Zalathar
deleted the

rollup-3m6ty9u

branch
October 23, 2025 22:39
@github-actionsgithub-actionsBot
mentioned this pull request
Oct 30, 2025
 Closed

github-actionsBot
pushed a commit
to model-checking/verify-rust-std
that referenced
this pull request
Nov 30, 2025
@bors
Auto merge ofrust-lang#148022- Zalathar:rollup-3m6ty9u, r=Zalathar
ac412f5
Rollup of 2 pull requests
Successful merges:
- rust-lang#140463 (Document MaybeUninit bit validity)
- rust-lang#148017 (Add TidyFlags and merge DiagCtx)
r? `@ghost`
`@rustbot` modify labels: rollup
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A-tidyArea: The tidy toolmerged-by-borsThis PR was explicitly merged by bors.rollupA PR which is a rollupS-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)T-libsRelevant to the library team, which will review and decide on the PR/issue.

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Development

Successfully merging this pull request may close these issues.

7 participants

@Zalathar@bors@rust-timer@rustbot@joshlf@traviscross@simp4t7

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
Rollup of 2 pull requests by Zalathar · Pull Request #148022 · rust-lang/rust · GitHub
Skip to content
Rollup of 2 pull requests - #148022
Merged
bors merged 5 commits into
rust-lang:masterfrom 
Zalathar:rollup-3m6ty9u
Oct 23, 2025
Merged
Rollup of 2 pull requests#148022
bors merged 5 commits into
rust-lang:masterfrom 
Zalathar:rollup-3m6ty9u
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@Zalathar
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commented
Oct 23, 2025•

edited by rustbot

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Successful merges:
r? @ghost
@rustbot modify labels: rollup
Create a similar rollup
joshlfand others
added 5 commits
September 21, 2025 04:29
@joshlf@RalfJung@traviscross
Document MaybeUninit bit validity
7971b2a
Co-authored-by: Ralf Jung <post@ralfj.de>
Edited-by: TC
@traviscross
Revise MaybeUninit validity documentation
11627f0
Let's rewrite this for better clarity. In particular, let's document
our language guarantees upfront and in positive form. We'll then list
the caveats and the non-guarantees after.
@simp4t7
add TidyFlags and merge DiagCtx
dbeb7fa
reorder impl block
changed is_bless to is_bless_enabled
@Zalathar
Rollup merge ofrust-lang#140463- joshlf:patch-13, r=RalfJung
c5e4a5f
Document MaybeUninit bit validity
Partially addresses rust-lang/unsafe-code-guidelines#555 by clarifying that it is sound to write any byte values (initialized or uninitialized) to any `MaybeUninit<T>` regardless of `T`.
r? `@RalfJung`
@Zalathar
Rollup merge ofrust-lang#148017- simp4t7:add-tidy-flags, r=Kobzol
5ff30d3
Add TidyFlags and merge DiagCtx
Adds a struct `TidyFlags` and merges it with `DiagCtx` into `TidyCtx`. Removes the need to pass `bless` into individual check functions in tidy.
@rustbotrustbot
added

A-tidy
Area: The tidy tool
S-waiting-on-review
Status: Awaiting review from the assignee but also interested parties.
T-bootstrap
Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
T-libs
Relevant to the library team, which will review and decide on the PR/issue.
rollup
A PR which is a rollup
labels
Oct 23, 2025
@Zalathar
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Oct 23, 2025

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Rollup of everything not in #148014.
@bors r+ rollup=never p=5
@bors
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Oct 23, 2025

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📌 Commit 5ff30d3 has been approved by Zalathar
It is now in the queue for this repository.
@borsbors
added

S-waiting-on-bors
Status: Waiting on bors to run and complete tests. Bors will change the label on completion.
and removed

S-waiting-on-review
Status: Awaiting review from the assignee but also interested parties.
labels
Oct 23, 2025
@bors
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Oct 23, 2025

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⌛ Testing commit 5ff30d3 with merge 11d2046...
@bors
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Oct 23, 2025

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☀️ Test successful - checks-actions

Approved by: Zalathar

Pushing 11d2046 to master...
@borsbors
added
the 
merged-by-bors
This PR was explicitly merged by bors.
label
Oct 23, 2025
@bors
bors
merged commit 11d2046
into
rust-lang:masterOct 23, 2025

12 checks passed

@rustbotrustbot
added this to the 1.92.0 milestone
Oct 23, 2025
@rust-timer
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Oct 23, 2025

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📌 Perf builds for each rolled up PR:
PR#MessagePerf Build Sha
#140463Document MaybeUninit bit validity41f21b40a0062dea51fc0993001b723499c6f607 (link)
#148017Add TidyFlags and merge DiagCtxa8f2ac052078ab066dcb35489f0a6f9a92d415a9 (link)
previous master: 469357eb48
In the case of a perf regression, run the following command for each PR you suspect might be the cause: @rust-timer build $SHA
@github-actions
github-actionsBot
commented
Oct 23, 2025

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Contributor
What is this?
This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.

Comparing 469357e (parent) -> 11d2046 (this PR)
Test differences
Show 160 test diffs

160 doctest diffs were found. These are ignored, as they are noisy.
Test dashboard
Run
cargo run --manifest-path src/ci/citool/Cargo.toml -- \
test-dashboard 11d2046fe9962720558cb15f72541f7fd170dec9 --output-dir test-dashboard
And then open test-dashboard/index.html in your browser to see an overview of all executed tests.
Job duration changes
  1. aarch64-gnu-llvm-20-2: 2576.2s -> 2164.0s (-16.0%)
  2. dist-x86_64-apple: 8250.5s -> 7072.6s (-14.3%)
  3. aarch64-gnu-llvm-20-1: 4003.6s -> 3433.6s (-14.2%)
  4. i686-gnu-2: 6364.5s -> 5554.2s (-12.7%)
  5. dist-aarch64-apple: 7136.7s -> 6319.1s (-11.5%)
  6. x86_64-gnu-gcc: 3462.7s -> 3071.2s (-11.3%)
  7. x86_64-gnu-llvm-20: 2726.5s -> 2449.4s (-10.2%)
  8. x86_64-gnu-miri: 4797.9s -> 4332.9s (-9.7%)
  9. x86_64-rust-for-linux: 2980.6s -> 2693.4s (-9.6%)
  10. x86_64-gnu-tools: 3597.2s -> 3267.6s (-9.2%)
How to interpret the job duration changes?
Job durations can vary a lot, based on the actual runner instance

that executed the job, system noise, invalidated caches, etc. The table above is provided

mostly for t-infra members, for simpler debugging of potential CI slow-downs.
@rust-timer
rust-timer
commented
Oct 23, 2025

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Collaborator
Finished benchmarking commit (11d2046): comparison URL.
Overall result: ✅ improvements - no action needed
@rustbot label: -perf-regression
Instruction count
Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.
meanrangecount
Regressions ❌ 
 (primary)		--0
Regressions ❌ 
 (secondary)		--0
Improvements ✅ 
 (primary)		--0
Improvements ✅ 
 (secondary)		-0.1%[-0.1%, -0.1%]1
All ❌✅ (primary)--0
Max RSS (memory usage)
This benchmark run did not return any relevant results for this metric.
Cycles
Results (secondary 3.0%)
A less reliable metric. May be of interest, but not used to determine the overall result above.
meanrangecount
Regressions ❌ 
 (primary)		--0
Regressions ❌ 
 (secondary)		3.5%[1.7%, 5.6%]11
Improvements ✅ 
 (primary)		--0
Improvements ✅ 
 (secondary)		-2.4%[-2.4%, -2.4%]1
All ❌✅ (primary)--0
Binary size
This benchmark run did not return any relevant results for this metric.
Bootstrap: 474.879s -> 474.995s (0.02%)
Artifact size: 390.43 MiB -> 390.51 MiB (0.02%)
@Zalathar
Zalathar
deleted the

rollup-3m6ty9u

branch
October 23, 2025 22:39
@github-actionsgithub-actionsBot
mentioned this pull request
Oct 30, 2025
 Closed

github-actionsBot
pushed a commit
to model-checking/verify-rust-std
that referenced
this pull request
Nov 30, 2025
@bors
Auto merge ofrust-lang#148022- Zalathar:rollup-3m6ty9u, r=Zalathar
ac412f5
Rollup of 2 pull requests
Successful merges:
- rust-lang#140463 (Document MaybeUninit bit validity)
- rust-lang#148017 (Add TidyFlags and merge DiagCtx)
r? `@ghost`
`@rustbot` modify labels: rollup
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A-tidyArea: The tidy toolmerged-by-borsThis PR was explicitly merged by bors.rollupA PR which is a rollupS-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)T-libsRelevant to the library team, which will review and decide on the PR/issue.

Projects


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Milestone

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Development

Successfully merging this pull request may close these issues.

7 participants

@Zalathar@bors@rust-timer@rustbot@joshlf@traviscross@simp4t7

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Rollup of 2 pull requests by Zalathar · Pull Request #148022 · rust-lang/rust · GitHub
Skip to content
Rollup of 2 pull requests - #148022
Merged
bors merged 5 commits into
rust-lang:masterfrom 
Zalathar:rollup-3m6ty9u
Oct 23, 2025
Merged
Rollup of 2 pull requests#148022
bors merged 5 commits into
rust-lang:masterfrom 
Zalathar:rollup-3m6ty9u
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@Zalathar
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Oct 23, 2025•

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Successful merges:
r? @ghost
@rustbot modify labels: rollup
Create a similar rollup
joshlfand others
added 5 commits
September 21, 2025 04:29
@joshlf@RalfJung@traviscross
Document MaybeUninit bit validity
7971b2a
Co-authored-by: Ralf Jung <post@ralfj.de>
Edited-by: TC
@traviscross
Revise MaybeUninit validity documentation
11627f0
Let's rewrite this for better clarity. In particular, let's document
our language guarantees upfront and in positive form. We'll then list
the caveats and the non-guarantees after.
@simp4t7
add TidyFlags and merge DiagCtx
dbeb7fa
reorder impl block
changed is_bless to is_bless_enabled
@Zalathar
Rollup merge ofrust-lang#140463- joshlf:patch-13, r=RalfJung
c5e4a5f
Document MaybeUninit bit validity
Partially addresses rust-lang/unsafe-code-guidelines#555 by clarifying that it is sound to write any byte values (initialized or uninitialized) to any `MaybeUninit<T>` regardless of `T`.
r? `@RalfJung`
@Zalathar
Rollup merge ofrust-lang#148017- simp4t7:add-tidy-flags, r=Kobzol
5ff30d3
Add TidyFlags and merge DiagCtx
Adds a struct `TidyFlags` and merges it with `DiagCtx` into `TidyCtx`. Removes the need to pass `bless` into individual check functions in tidy.
@rustbotrustbot
added

A-tidy
Area: The tidy tool
S-waiting-on-review
Status: Awaiting review from the assignee but also interested parties.
T-bootstrap
Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
T-libs
Relevant to the library team, which will review and decide on the PR/issue.
rollup
A PR which is a rollup
labels
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Oct 23, 2025

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Rollup of everything not in #148014.
@bors r+ rollup=never p=5
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📌 Commit 5ff30d3 has been approved by Zalathar
It is now in the queue for this repository.
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⌛ Testing commit 5ff30d3 with merge 11d2046...
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☀️ Test successful - checks-actions

Approved by: Zalathar

Pushing 11d2046 to master...
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merged commit 11d2046
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📌 Perf builds for each rolled up PR:
PR#MessagePerf Build Sha
#140463Document MaybeUninit bit validity41f21b40a0062dea51fc0993001b723499c6f607 (link)
#148017Add TidyFlags and merge DiagCtxa8f2ac052078ab066dcb35489f0a6f9a92d415a9 (link)
previous master: 469357eb48
In the case of a perf regression, run the following command for each PR you suspect might be the cause: @rust-timer build $SHA
@github-actions
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Oct 23, 2025

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What is this?
This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.

Comparing 469357e (parent) -> 11d2046 (this PR)
Test differences
Show 160 test diffs

160 doctest diffs were found. These are ignored, as they are noisy.
Test dashboard
Run
cargo run --manifest-path src/ci/citool/Cargo.toml -- \
test-dashboard 11d2046fe9962720558cb15f72541f7fd170dec9 --output-dir test-dashboard
And then open test-dashboard/index.html in your browser to see an overview of all executed tests.
Job duration changes
  1. aarch64-gnu-llvm-20-2: 2576.2s -> 2164.0s (-16.0%)
  2. dist-x86_64-apple: 8250.5s -> 7072.6s (-14.3%)
  3. aarch64-gnu-llvm-20-1: 4003.6s -> 3433.6s (-14.2%)
  4. i686-gnu-2: 6364.5s -> 5554.2s (-12.7%)
  5. dist-aarch64-apple: 7136.7s -> 6319.1s (-11.5%)
  6. x86_64-gnu-gcc: 3462.7s -> 3071.2s (-11.3%)
  7. x86_64-gnu-llvm-20: 2726.5s -> 2449.4s (-10.2%)
  8. x86_64-gnu-miri: 4797.9s -> 4332.9s (-9.7%)
  9. x86_64-rust-for-linux: 2980.6s -> 2693.4s (-9.6%)
  10. x86_64-gnu-tools: 3597.2s -> 3267.6s (-9.2%)
How to interpret the job duration changes?
Job durations can vary a lot, based on the actual runner instance

that executed the job, system noise, invalidated caches, etc. The table above is provided

mostly for t-infra members, for simpler debugging of potential CI slow-downs.
@rust-timer
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Finished benchmarking commit (11d2046): comparison URL.
Overall result: ✅ improvements - no action needed
@rustbot label: -perf-regression
Instruction count
Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.
meanrangecount
Regressions ❌ 
 (primary)		--0
Regressions ❌ 
 (secondary)		--0
Improvements ✅ 
 (primary)		--0
Improvements ✅ 
 (secondary)		-0.1%[-0.1%, -0.1%]1
All ❌✅ (primary)--0
Max RSS (memory usage)
This benchmark run did not return any relevant results for this metric.
Cycles
Results (secondary 3.0%)
A less reliable metric. May be of interest, but not used to determine the overall result above.
meanrangecount
Regressions ❌ 
 (primary)		--0
Regressions ❌ 
 (secondary)		3.5%[1.7%, 5.6%]11
Improvements ✅ 
 (primary)		--0
Improvements ✅ 
 (secondary)		-2.4%[-2.4%, -2.4%]1
All ❌✅ (primary)--0
Binary size
This benchmark run did not return any relevant results for this metric.
Bootstrap: 474.879s -> 474.995s (0.02%)
Artifact size: 390.43 MiB -> 390.51 MiB (0.02%)
@Zalathar
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rollup-3m6ty9u

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October 23, 2025 22:39
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 Closed

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Nov 30, 2025
@bors
Auto merge ofrust-lang#148022- Zalathar:rollup-3m6ty9u, r=Zalathar
ac412f5
Rollup of 2 pull requests
Successful merges:
- rust-lang#140463 (Document MaybeUninit bit validity)
- rust-lang#148017 (Add TidyFlags and merge DiagCtx)
r? `@ghost`
`@rustbot` modify labels: rollup
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@Zalathar@bors@rust-timer@rustbot@joshlf@traviscross@simp4t7

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Rollup of 2 pull requests by Zalathar · Pull Request #148022 · rust-lang/rust · GitHub
Skip to content
Rollup of 2 pull requests - #148022
Merged
bors merged 5 commits into
rust-lang:masterfrom 
Zalathar:rollup-3m6ty9u
Oct 23, 2025
Merged
Rollup of 2 pull requests#148022
bors merged 5 commits into
rust-lang:masterfrom 
Zalathar:rollup-3m6ty9u
Conversation
@Zalathar
@ZalatharZalathar
commented
Oct 23, 2025•

edited by rustbot

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Successful merges:
r? @ghost
@rustbot modify labels: rollup
Create a similar rollup
joshlfand others
added 5 commits
September 21, 2025 04:29
@joshlf@RalfJung@traviscross
Document MaybeUninit bit validity
7971b2a
Co-authored-by: Ralf Jung <post@ralfj.de>
Edited-by: TC
@traviscross
Revise MaybeUninit validity documentation
11627f0
Let's rewrite this for better clarity. In particular, let's document
our language guarantees upfront and in positive form. We'll then list
the caveats and the non-guarantees after.
@simp4t7
add TidyFlags and merge DiagCtx
dbeb7fa
reorder impl block
changed is_bless to is_bless_enabled
@Zalathar
Rollup merge ofrust-lang#140463- joshlf:patch-13, r=RalfJung
c5e4a5f
Document MaybeUninit bit validity
Partially addresses rust-lang/unsafe-code-guidelines#555 by clarifying that it is sound to write any byte values (initialized or uninitialized) to any `MaybeUninit<T>` regardless of `T`.
r? `@RalfJung`
@Zalathar
Rollup merge ofrust-lang#148017- simp4t7:add-tidy-flags, r=Kobzol
5ff30d3
Add TidyFlags and merge DiagCtx
Adds a struct `TidyFlags` and merges it with `DiagCtx` into `TidyCtx`. Removes the need to pass `bless` into individual check functions in tidy.
@rustbotrustbot
added

A-tidy
Area: The tidy tool
S-waiting-on-review
Status: Awaiting review from the assignee but also interested parties.
T-bootstrap
Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
T-libs
Relevant to the library team, which will review and decide on the PR/issue.
rollup
A PR which is a rollup
labels
Oct 23, 2025
@Zalathar
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Oct 23, 2025

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Rollup of everything not in #148014.
@bors r+ rollup=never p=5
@bors
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Oct 23, 2025

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📌 Commit 5ff30d3 has been approved by Zalathar
It is now in the queue for this repository.
@borsbors
added

S-waiting-on-bors
Status: Waiting on bors to run and complete tests. Bors will change the label on completion.
and removed

S-waiting-on-review
Status: Awaiting review from the assignee but also interested parties.
labels
Oct 23, 2025
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Oct 23, 2025

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⌛ Testing commit 5ff30d3 with merge 11d2046...
@bors
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Oct 23, 2025

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☀️ Test successful - checks-actions

Approved by: Zalathar

Pushing 11d2046 to master...
@borsbors
added
the 
merged-by-bors
This PR was explicitly merged by bors.
label
Oct 23, 2025
@bors
bors
merged commit 11d2046
into
rust-lang:masterOct 23, 2025

12 checks passed

@rustbotrustbot
added this to the 1.92.0 milestone
Oct 23, 2025
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📌 Perf builds for each rolled up PR:
PR#MessagePerf Build Sha
#140463Document MaybeUninit bit validity41f21b40a0062dea51fc0993001b723499c6f607 (link)
#148017Add TidyFlags and merge DiagCtxa8f2ac052078ab066dcb35489f0a6f9a92d415a9 (link)
previous master: 469357eb48
In the case of a perf regression, run the following command for each PR you suspect might be the cause: @rust-timer build $SHA
@github-actions
github-actionsBot
commented
Oct 23, 2025

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Contributor
What is this?
This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.

Comparing 469357e (parent) -> 11d2046 (this PR)
Test differences
Show 160 test diffs

160 doctest diffs were found. These are ignored, as they are noisy.
Test dashboard
Run
cargo run --manifest-path src/ci/citool/Cargo.toml -- \
test-dashboard 11d2046fe9962720558cb15f72541f7fd170dec9 --output-dir test-dashboard
And then open test-dashboard/index.html in your browser to see an overview of all executed tests.
Job duration changes
  1. aarch64-gnu-llvm-20-2: 2576.2s -> 2164.0s (-16.0%)
  2. dist-x86_64-apple: 8250.5s -> 7072.6s (-14.3%)
  3. aarch64-gnu-llvm-20-1: 4003.6s -> 3433.6s (-14.2%)
  4. i686-gnu-2: 6364.5s -> 5554.2s (-12.7%)
  5. dist-aarch64-apple: 7136.7s -> 6319.1s (-11.5%)
  6. x86_64-gnu-gcc: 3462.7s -> 3071.2s (-11.3%)
  7. x86_64-gnu-llvm-20: 2726.5s -> 2449.4s (-10.2%)
  8. x86_64-gnu-miri: 4797.9s -> 4332.9s (-9.7%)
  9. x86_64-rust-for-linux: 2980.6s -> 2693.4s (-9.6%)
  10. x86_64-gnu-tools: 3597.2s -> 3267.6s (-9.2%)
How to interpret the job duration changes?
Job durations can vary a lot, based on the actual runner instance

that executed the job, system noise, invalidated caches, etc. The table above is provided

mostly for t-infra members, for simpler debugging of potential CI slow-downs.
@rust-timer
rust-timer
commented
Oct 23, 2025

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Finished benchmarking commit (11d2046): comparison URL.
Overall result: ✅ improvements - no action needed
@rustbot label: -perf-regression
Instruction count
Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.
meanrangecount
Regressions ❌ 
 (primary)		--0
Regressions ❌ 
 (secondary)		--0
Improvements ✅ 
 (primary)		--0
Improvements ✅ 
 (secondary)		-0.1%[-0.1%, -0.1%]1
All ❌✅ (primary)--0
Max RSS (memory usage)
This benchmark run did not return any relevant results for this metric.
Cycles
Results (secondary 3.0%)
A less reliable metric. May be of interest, but not used to determine the overall result above.
meanrangecount
Regressions ❌ 
 (primary)		--0
Regressions ❌ 
 (secondary)		3.5%[1.7%, 5.6%]11
Improvements ✅ 
 (primary)		--0
Improvements ✅ 
 (secondary)		-2.4%[-2.4%, -2.4%]1
All ❌✅ (primary)--0
Binary size
This benchmark run did not return any relevant results for this metric.
Bootstrap: 474.879s -> 474.995s (0.02%)
Artifact size: 390.43 MiB -> 390.51 MiB (0.02%)
@Zalathar
Zalathar
deleted the

rollup-3m6ty9u

branch
October 23, 2025 22:39
@github-actionsgithub-actionsBot
mentioned this pull request
Oct 30, 2025
 Closed

github-actionsBot
pushed a commit
to model-checking/verify-rust-std
that referenced
this pull request
Nov 30, 2025
@bors
Auto merge ofrust-lang#148022- Zalathar:rollup-3m6ty9u, r=Zalathar
ac412f5
Rollup of 2 pull requests
Successful merges:
- rust-lang#140463 (Document MaybeUninit bit validity)
- rust-lang#148017 (Add TidyFlags and merge DiagCtx)
r? `@ghost`
`@rustbot` modify labels: rollup
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A-tidyArea: The tidy toolmerged-by-borsThis PR was explicitly merged by bors.rollupA PR which is a rollupS-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)T-libsRelevant to the library team, which will review and decide on the PR/issue.

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@Zalathar@bors@rust-timer@rustbot@joshlf@traviscross@simp4t7

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
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if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
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} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
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if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
Rollup of 2 pull requests by Zalathar · Pull Request #148022 · rust-lang/rust · GitHub
Skip to content
Rollup of 2 pull requests - #148022
Merged
bors merged 5 commits into
rust-lang:masterfrom 
Zalathar:rollup-3m6ty9u
Oct 23, 2025
Merged
Rollup of 2 pull requests#148022
bors merged 5 commits into
rust-lang:masterfrom 
Zalathar:rollup-3m6ty9u
Conversation
@Zalathar
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commented
Oct 23, 2025•

edited by rustbot

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Successful merges:
r? @ghost
@rustbot modify labels: rollup
Create a similar rollup
joshlfand others
added 5 commits
September 21, 2025 04:29
@joshlf@RalfJung@traviscross
Document MaybeUninit bit validity
7971b2a
Co-authored-by: Ralf Jung <post@ralfj.de>
Edited-by: TC
@traviscross
Revise MaybeUninit validity documentation
11627f0
Let's rewrite this for better clarity. In particular, let's document
our language guarantees upfront and in positive form. We'll then list
the caveats and the non-guarantees after.
@simp4t7
add TidyFlags and merge DiagCtx
dbeb7fa
reorder impl block
changed is_bless to is_bless_enabled
@Zalathar
Rollup merge ofrust-lang#140463- joshlf:patch-13, r=RalfJung
c5e4a5f
Document MaybeUninit bit validity
Partially addresses rust-lang/unsafe-code-guidelines#555 by clarifying that it is sound to write any byte values (initialized or uninitialized) to any `MaybeUninit<T>` regardless of `T`.
r? `@RalfJung`
@Zalathar
Rollup merge ofrust-lang#148017- simp4t7:add-tidy-flags, r=Kobzol
5ff30d3
Add TidyFlags and merge DiagCtx
Adds a struct `TidyFlags` and merges it with `DiagCtx` into `TidyCtx`. Removes the need to pass `bless` into individual check functions in tidy.
@rustbotrustbot
added

A-tidy
Area: The tidy tool
S-waiting-on-review
Status: Awaiting review from the assignee but also interested parties.
T-bootstrap
Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
T-libs
Relevant to the library team, which will review and decide on the PR/issue.
rollup
A PR which is a rollup
labels
Oct 23, 2025
@Zalathar
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Oct 23, 2025

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Rollup of everything not in #148014.
@bors r+ rollup=never p=5
@bors
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Oct 23, 2025

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📌 Commit 5ff30d3 has been approved by Zalathar
It is now in the queue for this repository.
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Oct 23, 2025
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Oct 23, 2025

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⌛ Testing commit 5ff30d3 with merge 11d2046...
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Oct 23, 2025

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☀️ Test successful - checks-actions

Approved by: Zalathar

Pushing 11d2046 to master...
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added this to the 1.92.0 milestone
Oct 23, 2025
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Oct 23, 2025

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📌 Perf builds for each rolled up PR:
PR#MessagePerf Build Sha
#140463Document MaybeUninit bit validity41f21b40a0062dea51fc0993001b723499c6f607 (link)
#148017Add TidyFlags and merge DiagCtxa8f2ac052078ab066dcb35489f0a6f9a92d415a9 (link)
previous master: 469357eb48
In the case of a perf regression, run the following command for each PR you suspect might be the cause: @rust-timer build $SHA
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Oct 23, 2025

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What is this?
This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.

Comparing 469357e (parent) -> 11d2046 (this PR)
Test differences
Show 160 test diffs

160 doctest diffs were found. These are ignored, as they are noisy.
Test dashboard
Run
cargo run --manifest-path src/ci/citool/Cargo.toml -- \
test-dashboard 11d2046fe9962720558cb15f72541f7fd170dec9 --output-dir test-dashboard
And then open test-dashboard/index.html in your browser to see an overview of all executed tests.
Job duration changes
  1. aarch64-gnu-llvm-20-2: 2576.2s -> 2164.0s (-16.0%)
  2. dist-x86_64-apple: 8250.5s -> 7072.6s (-14.3%)
  3. aarch64-gnu-llvm-20-1: 4003.6s -> 3433.6s (-14.2%)
  4. i686-gnu-2: 6364.5s -> 5554.2s (-12.7%)
  5. dist-aarch64-apple: 7136.7s -> 6319.1s (-11.5%)
  6. x86_64-gnu-gcc: 3462.7s -> 3071.2s (-11.3%)
  7. x86_64-gnu-llvm-20: 2726.5s -> 2449.4s (-10.2%)
  8. x86_64-gnu-miri: 4797.9s -> 4332.9s (-9.7%)
  9. x86_64-rust-for-linux: 2980.6s -> 2693.4s (-9.6%)
  10. x86_64-gnu-tools: 3597.2s -> 3267.6s (-9.2%)
How to interpret the job duration changes?
Job durations can vary a lot, based on the actual runner instance

that executed the job, system noise, invalidated caches, etc. The table above is provided

mostly for t-infra members, for simpler debugging of potential CI slow-downs.
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Oct 23, 2025

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Finished benchmarking commit (11d2046): comparison URL.
Overall result: ✅ improvements - no action needed
@rustbot label: -perf-regression
Instruction count
Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.
meanrangecount
Regressions ❌ 
 (primary)		--0
Regressions ❌ 
 (secondary)		--0
Improvements ✅ 
 (primary)		--0
Improvements ✅ 
 (secondary)		-0.1%[-0.1%, -0.1%]1
All ❌✅ (primary)--0
Max RSS (memory usage)
This benchmark run did not return any relevant results for this metric.
Cycles
Results (secondary 3.0%)
A less reliable metric. May be of interest, but not used to determine the overall result above.
meanrangecount
Regressions ❌ 
 (primary)		--0
Regressions ❌ 
 (secondary)		3.5%[1.7%, 5.6%]11
Improvements ✅ 
 (primary)		--0
Improvements ✅ 
 (secondary)		-2.4%[-2.4%, -2.4%]1
All ❌✅ (primary)--0
Binary size
This benchmark run did not return any relevant results for this metric.
Bootstrap: 474.879s -> 474.995s (0.02%)
Artifact size: 390.43 MiB -> 390.51 MiB (0.02%)
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rollup-3m6ty9u

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October 23, 2025 22:39
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Oct 30, 2025
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Nov 30, 2025
@bors
Auto merge ofrust-lang#148022- Zalathar:rollup-3m6ty9u, r=Zalathar
ac412f5
Rollup of 2 pull requests
Successful merges:
- rust-lang#140463 (Document MaybeUninit bit validity)
- rust-lang#148017 (Add TidyFlags and merge DiagCtx)
r? `@ghost`
`@rustbot` modify labels: rollup
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