Free disk space on Windows 2025 runners by ChrisDenton · Pull Request #144305 · rust-lang/rust

ChrisDenton · 2025-07-22T13:28:30Z

I've managed to reduce the time deletion takes by:

Using powershell, which is generally faster for filesystem operations than msys2
Disabling defender's realtime protection
Performing deletions concurrently then waiting for them all to complete

It still takes 2-10 mins but that's not too bad.

rustbot · 2025-07-22T13:28:34Z

rustbot has assigned @jdno.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

ChrisDenton · 2025-07-22T13:28:39Z

@bors try jobs=x86_64-msvc-1

Free disk space on Windows 2025 runners try-job: x86_64-msvc-1

rust-bors · 2025-07-22T13:28:43Z

⌛ Trying commit e635015 with merge 0c11125…

To cancel the try build, run the command @bors try cancel.

marcoieni · 2025-07-22T13:47:34Z

I'll review this since I have a lot of context.

r? marcoieni

ChrisDenton · 2025-07-22T13:56:56Z

@bors try jobs=msvc,mingw

rust-bors · 2025-07-22T13:57:01Z

⌛ Trying commit 96ed33f with merge 8d49646…

(The previously running try build was automatically cancelled.)

To cancel the try build, run the command @bors try cancel.

Free disk space on Windows 2025 runners try-job: *msvc* try-job: *mingw*

rust-bors · 2025-07-22T17:05:28Z

☀️ Try build successful (CI)
Build commit: 8d49646 (8d496467c43f870fb6ca9724ba0cb278e746927d, parent: c0b282f0ccdab7523cdb8dfa41b23bed5573da76)

ChrisDenton · 2025-07-22T19:18:22Z

@bors try jobs=x86_64-msvc-1

rust-bors · 2025-07-22T19:18:26Z

⌛ Trying commit 5f662d5 with merge 9937cf4…

To cancel the try build, run the command @bors try cancel.

Free disk space on Windows 2025 runners try-job: x86_64-msvc-1

rust-bors · 2025-07-22T19:19:43Z

💔 Test failed (CI). Failed job:

Calculate job matrix (web logs, extended logs)

RalfJung · 2025-07-29T08:31:56Z

Disabling defender's realtime protection

Where in the script does that happen?

marcoieni · 2025-07-29T08:43:23Z

Chris, your force-push reverted this change:

It's not a big deal. Either you force-push another time or you submit another PR, as you prefer 👍

Where in the script does that happen?

We decided to remove that line. Defender is not disabled anymore.

ChrisDenton · 2025-07-29T08:47:04Z

@bors r-

I'll fix that. It seems I'm struggling to keep my local branch properly sync'd ATM 🙂

RalfJung · 2025-07-29T08:49:23Z

We decided to remove that line. Defender is not disabled anymore.

Please update the PR description to match the PR, then.

marcoieni · 2025-07-29T08:58:19Z

I'll fix that. It seems I'm struggling to keep my local branch properly sync'd ATM 🙂

I feel you, I struggle with git as well 😂

ChrisDenton · 2025-07-30T04:11:49Z

Ok, let's try again 🙂

@bors r=marcoieni

bors · 2025-07-30T04:11:52Z

📌 Commit 43018d3 has been approved by marcoieni

It is now in the queue for this repository.

bors · 2025-07-30T06:00:13Z

⌛ Testing commit 43018d3 with merge 72716b1...

bors · 2025-07-30T09:01:35Z

☀️ Test successful - checks-actions
Approved by: marcoieni
Pushing 72716b1 to master...

github-actions · 2025-07-30T09:04:29Z

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 919c409 (parent) -> 72716b1 (this PR)

Test differences

Show 173 test diffs

Stage 2

[debuginfo-cdb] tests/debuginfo/associated-types.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/basic-types-globals.rs#lto: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/basic-types-globals.rs#no-lto: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/basic-types-mut-globals.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/borrowed-c-style-enum.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/borrowed-enum.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/borrowed-unique-basic.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/box.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/boxed-struct.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/by-value-self-argument-in-trait-impl.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/c-style-enum.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/captured-fields-2.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/collapse-debuginfo-external-attr.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/collapse-debuginfo-external-flag.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/collapse-debuginfo-static-external.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/collapse-debuginfo-static.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/collapse-debuginfo-with-yes-flag.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/constant-debug-locs.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/constant-in-match-pattern.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/coroutine-closure.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/coroutine-objects.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/cross-crate-spans.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/cross-crate-type-uniquing.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/destructured-for-loop-variable.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/destructured-local.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/dummy_span.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/embedded-visualizer.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/empty-string.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/enum-thinlto.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/evec-in-struct.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/extern-c-fn.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/fixed-sized-array.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/function-arg-initialization.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/function-arguments.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/function-call.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/function-prologue-stepping-regular.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/generic-enum-with-different-disr-sizes.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/generic-function.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/generic-static-method-on-struct-and-enum.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/generic-struct-style-enum.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/generic-struct.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/generic-tuple-style-enum.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/issue-12886.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/issue-13213.rs: ignore (ignored when the debugger is cdb (Fails with exit code 0xc0000135 ("the application failed to initialize properly"))) -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/lexical-scope-in-for-loop.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/lexical-scope-in-if.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/lexical-scope-in-match.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/lexical-scope-in-parameterless-closure.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/lexical-scope-in-unconditional-loop.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/lexical-scope-with-macro.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/lexical-scopes-in-block-expression.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/marker-types.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/method-on-enum.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/method-on-generic-struct.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/method-on-struct.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/method-on-trait.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/method-on-tuple-struct.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/msvc-pretty-enums.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/multi-byte-chars.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/multiline-calls.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/multiple-functions-equal-var-names.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/multiple-functions.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/mutable-locs.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/name-shadowing-and-scope-nesting.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/packed-struct-with-destructor.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/packed-struct.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/path.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/pretty-huge-vec.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/pretty-slices.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/pretty-std-collections-hash.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/pretty-std-collections.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/pretty-std.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/pretty-uninitialized-vec.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/rc_arc.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/recursive-struct.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/recursive-type-with-gat.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/reference-debuginfo.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/result-types.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/rwlock-read.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/rwlock-write.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/self-in-default-method.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/shadowed-argument.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/should-fail.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/simd.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/simple-lexical-scope.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/simple-struct.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/skip_second_statement.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/skip_second_statement_collapse.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/step-into-match.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/strings-and-strs.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/struct-in-enum.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/struct-style-enum.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/thread-names.rs#macos: ignore (only executed when the operating system is macos) -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/tuple-in-tuple.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/tuple-style-enum.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/union-smoke.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/vec-slices.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/vec.rs: pass -> [missing] (J0)
[debuginfo-cdb] tests/debuginfo/zst-interferes-with-prologue.rs: pass -> [missing] (J0)
cargo_init::simple_hg::case: pass -> ignore (hg not installed) (J1)

(and 70 additional test diffs)

Additionally, 3 doctest diffs were found. These are ignored, as they are noisy.

Job group index

J0: i686-msvc-1, x86_64-msvc-1
J1: x86_64-msvc-ext1

Test dashboard

Run

cargo run --manifest-path src/ci/citool/Cargo.toml -- \
test-dashboard 72716b134ac26b837703e46cbda99a453ae92c42 --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

dist-aarch64-linux: 5494.0s -> 8129.1s (48.0%)
pr-check-2: 2689.4s -> 2102.2s (-21.8%)
pr-check-1: 1768.1s -> 1530.3s (-13.5%)
x86_64-gnu-tools: 3960.4s -> 3430.8s (-13.4%)
x86_64-gnu-debug: 6290.6s -> 5458.2s (-13.2%)
aarch64-gnu-debug: 4397.6s -> 3823.8s (-13.0%)
i686-gnu-nopt-1: 8193.4s -> 7142.1s (-12.8%)
x86_64-rust-for-linux: 2953.4s -> 2591.6s (-12.3%)
aarch64-gnu-llvm-19-2: 2576.6s -> 2273.3s (-11.8%)
x86_64-mingw-2: 7056.6s -> 7755.3s (9.9%)

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 · 2025-07-30T10:34:10Z

Finished benchmarking commit (72716b1): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

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

Max RSS (memory usage)

Results (primary 1.1%)

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

	mean	range	count
Regressions ❌ (primary)	1.1%	[1.1%, 1.1%]	1
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	1.1%	[1.1%, 1.1%]	1

Cycles

Results (primary 2.5%, secondary 15.7%)

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

	mean	range	count
Regressions ❌ (primary)	2.5%	[2.5%, 2.5%]	1
Regressions ❌ (secondary)	18.7%	[17.8%, 19.8%]	6
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-2.6%	[-2.6%, -2.6%]	1
All ❌✅ (primary)	2.5%	[2.5%, 2.5%]	1

Binary size

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

Bootstrap: 468.849s -> 468.451s (-0.08%)
Artifact size: 376.81 MiB -> 376.81 MiB (0.00%)

…arcoieni Free disk space on Windows 2025 runners I've managed to reduce the time deletion takes by: - Using powershell, which is generally faster for filesystem operations than msys2 - Performing deletions concurrently then waiting for them all to complete It still takes 2-10 mins but that's not too bad.

rustbot assigned jdno Jul 22, 2025

rust-borsBot added a commit that referenced this pull request Jul 22, 2025
Auto merge of#144305- ChrisDenton:win-free-disk-space, r=<try>
0c11125
Free disk space on Windows 2025 runners try-job: x86_64-msvc-1

ChrisDenton force-pushed the win-free-disk-space branch from e635015 to 9e95a28Compare July 22, 2025 13:35

rustbot assigned marcoieni and unassigned jdno Jul 22, 2025