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CI experiments - #159628

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CI experiments#159628
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@Mark-Simulacrum Mark-Simulacrum commented Jul 20, 2026 •
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Ignore this, just experimenting.

@rustbot rustbot added A-CI Area: Our Github Actions CI A-testsuite Area: The testsuite used to check the correctness of rustc S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-infra Relevant to the infrastructure team, which will review and decide on the PR/issue. labels Jul 20, 2026
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Mark-Simulacrum commented Jul 20, 2026

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@bors try jobs=dist-x86_64-linux

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Auto merge of #159628 - Mark-Simulacrum:ci-experiments, r=<try>
c3afc75 
CI experiments


try-job: dist-x86_64-linux
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💔 Test for c3afc75 failed: CI. Failed job:

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@bors try jobs=dist-x86_64-linux

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Auto merge of #159628 - Mark-Simulacrum:ci-experiments, r=<try>
613b2ca 
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try-job: dist-x86_64-linux
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💔 Test for 613b2ca failed: CI. Failed job:

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@bors try jobs=dist-x86_64-linux

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rust-bors Bot pushed a commit that referenced this pull request Jul 20, 2026
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Auto merge of #159628 - Mark-Simulacrum:ci-experiments, r=<try>
73ee0a8 
CI experiments


try-job: dist-x86_64-linux
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💔 Test for 73ee0a8 failed: CI. Failed job:

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@bors try jobs=dist-x86_64-linux

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Auto merge of #159628 - Mark-Simulacrum:ci-experiments, r=<try>
7bca112 
CI experiments


try-job: dist-x86_64-linux
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💔 Test for 7bca112 failed: CI. Failed job:

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Mark-Simulacrum commented Jul 20, 2026

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Trying again...

@bors try jobs=dist-x86_64-linux

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rust-bors Bot pushed a commit that referenced this pull request Jul 20, 2026
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Auto merge of #159628 - Mark-Simulacrum:ci-experiments, r=<try>
2427980 
CI experiments


try-job: dist-x86_64-linux
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☀️ Try build successful (CI)
Build commit: 2427980 (24279809799a4368bebba108b9ab746394f4af20)
Base parent: 87e5904 (87e5904f5eb6398af6b22eac2802c78934260c48)

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@bors try

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rust-bors Bot pushed a commit that referenced this pull request Jul 21, 2026
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Auto merge of #159628 - Mark-Simulacrum:ci-experiments, r=<try>
9a7da63 
CI experiments
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☀️ Try build successful (CI)
Build commit: 9a7da63 (9a7da636ffe9e575ae764c59546bbc04e581e5f6)
Base parent: 87e5904 (87e5904f5eb6398af6b22eac2802c78934260c48)

Kobzol
Kobzol reviewed Jul 21, 2026
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Omg, <1h for a full dist x64 Linux build? Yes please!! ❤️ (though I would perhaps skip the parallel frontend thing, not sure if we want to enable that for distributed artifacts just yet)

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Comment thread src/tools/opt-dist/src/training.rs Outdated
crates.join(",").as_str(),
"--jobs",
"4",
"16",

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Just noting that we benchmark 7 crates for LLVM and 9 crates for rustc/rustdoc/cargo, so having more jobs shouldn't help anymore.

bjorn3
bjorn3 reviewed Jul 21, 2026
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Comment thread src/ci/run.sh Outdated
# space required for CI artifacts.
RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --dist-compression-formats=xz"
# Enable parallel rustc for CI compilation. We trust this enough to not
# miscompile and it makes CI builds faster.

@bjorn3 bjorn3 Jul 21, 2026 •
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It isn't fully reproducible yet.

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@Mark-Simulacrum Mark-Simulacrum Jul 21, 2026

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I don't know how important that is for at least try builds, but let's see how much of an impact it has...

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Mark-Simulacrum commented Jul 21, 2026

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Trying without the parallel-rustc enablement but keeping zstd:

@bors try jobs=dist-x86_64-linux

Omg, <1h for a full dist x64 Linux build?

55m for quick, 1h20m for full. Most of that last 25 minutes is in doc building which isn't really utilizing the hardware well (lots of single threaded work).

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rust-bors Bot pushed a commit that referenced this pull request Jul 21, 2026
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Auto merge of #159628 - Mark-Simulacrum:ci-experiments, r=<try>
b6066b8 
CI experiments


try-job: dist-x86_64-linux
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☀️ Try build successful (CI)
Build commit: b6066b8 (b6066b80d8402c6ff535a5a1909c1c3eae4bbb75)
Base parent: cde3f8a (cde3f8aee5a30928872e2438e3f18238a3fa306c)

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Mark-Simulacrum commented Jul 22, 2026

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Non-parallel quick job...

@bors try

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rust-bors Bot pushed a commit that referenced this pull request Jul 22, 2026
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Auto merge of #159628 - Mark-Simulacrum:ci-experiments, r=<try>
2d6cb40 
CI experiments
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☀️ Try build successful (CI)
Build commit: 2d6cb40 (2d6cb40e8eb693a97cf4b3c819c7713cda45894e)
Base parent: b803f36 (b803f36e0748c40af88b786bd23499cb21fb97ad)

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Mark-Simulacrum commented Jul 31, 2026

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@bors try

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Auto merge of #159628 - Mark-Simulacrum:ci-experiments, r=<try>
b59b1a6 
CI experiments
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💔 Test for b59b1a6 failed: CI

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Mark-Simulacrum commented Aug 6, 2026

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@bors try

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Auto merge of #159628 - Mark-Simulacrum:ci-experiments, r=<try>
6b45209 
CI experiments
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💔 Test for 6b45209 failed: CI. Failed job:

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Mark-Simulacrum commented Aug 6, 2026

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@bors try

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Auto merge of #159628 - Mark-Simulacrum:ci-experiments, r=<try>
0e44451 
CI experiments
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☀️ Try build successful (CI)
Build commit: 0e44451 (0e44451b02b0430abd294745ee9775bcc67025d6)
Base parent: 26bfbf2 (26bfbf28f5f79dff333ce5a232f131b496ec9cfe)

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A-CI Area: Our Github Actions CI A-testsuite Area: The testsuite used to check the correctness of rustc S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-infra Relevant to the infrastructure team, which will review and decide on the PR/issue.

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