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chore: (debug) add tracing to attempt to catch hang #12013

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@thorimur thorimur commented Jan 15, 2026 •
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This PR is intended for debugging the slow linting step in mathlib4 CI.

Prepared partially with Codex.

@thorimur thorimur changed the title Debug-hang debug: add tracing to 4.27.0-rc1 to attempt to catch hang Jan 15, 2026
@thorimur thorimur changed the title debug: add tracing to 4.27.0-rc1 to attempt to catch hang chore: (debug) add tracing to 4.27.0-rc1 to attempt to catch hang Jan 15, 2026
@github-actions github-actions bot added the toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN label Jan 15, 2026
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leanprover-community-bot commented Jan 15, 2026 •
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Mathlib CI status (docs):

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leanprover-bot commented Jan 15, 2026 •
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Reference manual CI status:

  • ❗ Reference manual CI will not be attempted unless your PR branches off the nightly-with-manual branch. Try git rebase 2d0c62c767360a1b63d8777f9ed9bfae2c1fdf9f --onto d92cdae8e901d3d9686f8c0e88a0371379c49dff. You can force reference manual CI using the force-manual-ci label. (2026-01-15 04:46:15)
  • ❗ Reference manual CI can not be attempted yet, as the nightly-testing-2026-01-14 tag does not exist there yet. We will retry when you push more commits. If you rebase your branch onto nightly-with-manual, reference manual CI should run now. You can force reference manual CI using the force-manual-ci label. (2026-01-15 05:52:20)

@thorimur thorimur changed the title chore: (debug) add tracing to 4.27.0-rc1 to attempt to catch hang chore: (debug) add tracing to attempt to catch hang Jan 15, 2026
leanprover-community-mathlib4-bot added a commit to leanprover-community/batteries that referenced this pull request Jan 15, 2026
@leanprover-community-mathlib4-bot
Update lean-toolchain for testing leanprover/lean4#12013
3e3b593
@github-actions github-actions bot added the mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN label Jan 15, 2026
leanprover-community-mathlib4-bot added a commit to leanprover-community/mathlib4-nightly-testing that referenced this pull request Jan 15, 2026
@leanprover-community-mathlib4-bot
Update lean-toolchain for testing leanprover/lean4#12013
57cdf4a
@leanprover-community-bot leanprover-community-bot added the builds-mathlib CI has verified that Mathlib builds against this PR label Jan 15, 2026
leanprover-community-mathlib4-bot added a commit to leanprover-community/batteries that referenced this pull request Jan 15, 2026
@leanprover-community-mathlib4-bot
Update lean-toolchain for leanprover/lean4#12013
b9d2bac
leanprover-community-mathlib4-bot added a commit to leanprover-community/mathlib4-nightly-testing that referenced this pull request Jan 15, 2026
@leanprover-community-mathlib4-bot
Update lean-toolchain for leanprover/lean4#12013
cebefb2
@leanprover-community-bot leanprover-community-bot added breaks-mathlib This is not necessarily a blocker for merging: but there needs to be a plan and removed builds-mathlib CI has verified that Mathlib builds against this PR labels Jan 16, 2026
leanprover-community-mathlib4-bot added a commit to leanprover-community/batteries that referenced this pull request Jan 16, 2026
@leanprover-community-mathlib4-bot
Update lean-toolchain for leanprover/lean4#12013
8ca69b0
leanprover-community-mathlib4-bot added a commit to leanprover-community/mathlib4-nightly-testing that referenced this pull request Jan 16, 2026
@leanprover-community-mathlib4-bot
Update lean-toolchain for leanprover/lean4#12013
dfe3f8d
@leanprover-community-bot leanprover-community-bot added builds-mathlib CI has verified that Mathlib builds against this PR breaks-mathlib This is not necessarily a blocker for merging: but there needs to be a plan and removed breaks-mathlib This is not necessarily a blocker for merging: but there needs to be a plan builds-mathlib CI has verified that Mathlib builds against this PR labels Jan 16, 2026
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thorimur commented Jan 16, 2026

force-mathlib-ci

@leanprover-community-bot leanprover-community-bot added builds-mathlib CI has verified that Mathlib builds against this PR and removed breaks-mathlib This is not necessarily a blocker for merging: but there needs to be a plan labels Jan 17, 2026
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