x test --tests library/core does more work than it needs to #158299

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1. jyn514

   added

   T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

   C-bugCategory: This is a bug.Category: This is a bug.

   on Jun 23, 2026
2. rustbot

   added

   needs-triageThis issue may need triage. Remove when done. See docs forge.rust-lang.org/release/issue-triagingThis issue may need triage. Remove when done. See docs forge.rust-lang.org/release/issue-triaging

   on Jun 23, 2026
3. chenyukang

   self-assigned this

   on Jun 27, 2026
4. Kobzol commented on Jun 29, 2026

   

   Kobzol

   on Jun 29, 2026

   Member

   More actions

   From bootstrap's code it looks like we always build stage 1 rustdoc when we run stage 1 tests, so I don't think that it's a recent regression (though it is something that would regress after the stage0 redesign). This happens here, which is on a different level of granularity than where we select which kinds of tests will run.
5. jhpratt

   added 2 commits that reference this issue on Jun 29, 2026

   Rollup merge of rust-lang#158561 - chenyukang:yukang-fix-158299-core-…

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   This issue will close once commit 5e4eaaa is merged into the 'main' branch.

   5e4eaaa

   Rollup merge of rust-lang#158562 - Kobzol:bootstrap-tracing-step-call…

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   This issue will close once commit 1e18b73 is merged into the 'main' branch.

   1e18b73
6. JonathanBrouwer

   added 8 commits that reference this issue on Jun 29, 2026

   Rollup merge of rust-lang#158561 - chenyukang:yukang-fix-158299-core-…

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   This issue will close once commit ea7ee56 is merged into the 'main' branch.

   ea7ee56

   Rollup merge of rust-lang#158562 - Kobzol:bootstrap-tracing-step-call…

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   This issue will close once commit ccabf4f is merged into the 'main' branch.

   ccabf4f

   Rollup merge of rust-lang#158561 - chenyukang:yukang-fix-158299-core-…

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   This issue will close once commit efb1224 is merged into the 'main' branch.

   efb1224

   Rollup merge of rust-lang#158562 - Kobzol:bootstrap-tracing-step-call…

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   This issue will close once commit 412e6fb is merged into the 'main' branch.

   412e6fb

   Rollup merge of rust-lang#158561 - chenyukang:yukang-fix-158299-core-…

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   This issue will close once commit 679e35f is merged into the 'main' branch.

   679e35f

   Rollup merge of rust-lang#158562 - Kobzol:bootstrap-tracing-step-call…

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   This issue will close once commit b1afa86 is merged into the 'main' branch.

   b1afa86

   Rollup merge of rust-lang#158561 - chenyukang:yukang-fix-158299-core-…

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   This issue will close once commit 912d8f2 is merged into the 'main' branch.

   912d8f2

   Rollup merge of rust-lang#158562 - Kobzol:bootstrap-tracing-step-call…

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   This issue will close once commit cd1d41e is merged into the 'main' branch.

   cd1d41e
7. rust-bors

   closed this as completedin 912d8f2on Jun 30, 2026
8. rustbot

   removed

   needs-triageThis issue may need triage. Remove when done. See docs forge.rust-lang.org/release/issue-triagingThis issue may need triage. Remove when done. See docs forge.rust-lang.org/release/issue-triaging

   on Jun 30, 2026
9. rust-timer

   added 2 commits that reference this issue on Jun 30, 2026

   Unrolled build for #158561

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   This issue will close once commit 2a7da65 is merged into the 'main' branch.

   2a7da65

   Unrolled build for #158562

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   This issue will close once commit 44763f5 is merged into the 'main' branch.

   44763f5
10. bjorn3

    added 2 commits that reference this issue on Jul 1, 2026

    Rollup merge of #158561 - chenyukang:yukang-fix-158299-core-tests-rus…

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    This issue will close once commit d0421a3 is merged into the 'master' branch.

    d0421a3

    Rollup merge of #158562 - Kobzol:bootstrap-tracing-step-caller, r=jie…

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    This issue will close once commit 5d42ccb is merged into the 'master' branch.

    5d42ccb