ci: bound the non-gating statepoints hazard census

[proggeramlug]

The statepoints job can finish every required check and then be cancelled by its non-gating hazard census. In #11735 job 110544421021, required work finished at 20:57 UTC after roughly 79 minutes; the census ran until the whole 90-minute job was cancelled at 21:08 UTC.

Give the existing diagnostic step a five-minute timeout so it leaves time for job completion. Its existing explicit continue-on-error remains in place. Required curated and dependency-scale root checks, corpus floors, failure thresholds and checker commands are unchanged.

Validation: gate-wiring self-test (18 cases), gate-wiring audit (9 gates) and whitespace checks pass. Full local script lint at final head 224c4ec completed: 110 of 111 checks passed; only the grandfathered Public benchmark evidence freshness check failed. Compile-tier commands and two CI-only commands were explicitly skipped. Actual current-head workflow CI is terminal, with only that same lint step and its pr-gate fan-in failing; all other executed checks passed. Required root-check commands and gating rules are byte-unchanged. This does not waive a cancelled whole GC job: #11735's exact-head statepoints rerun 110684548790 has independently completed successfully. The new diagnostic timeout itself has not yet been exercised by a timed-out full GC job.

Summary by CodeRabbit

• Chores
  • Limited the diagnostic hazard census to five minutes. Required checks and failure thresholds are unchanged.

[coderabbitai]

Navigate logical layers of code changes, visualize relationships, and explore their blast radius.

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: 29678cad-bc81-4b7f-9738-888488dba914

📥 Commits

Reviewing files that changed from the base of the PR and between 47a0c7b and 224c4ec.

📒 Files selected for processing (2)

• .github/workflows/gc-root-dominance.yml
• changelog.d/11742-bounded-statepoints-census.md

Included review availability: This review used your included allowance. Your plan provides up to 8 included reviews per hour; 5 remain after this review.

---

📝 Walkthrough

Walkthrough

The workflow now limits the unfiltered hazard census step to five minutes. Its existing failure-tolerance settings remain unchanged. A changelog entry documents the limit and states that required checker coverage and failure thresholds remain unchanged.

Changes

Statepoints hazard census

Layer / File(s)	Summary
Bound and document the census .github/workflows/gc-root-dominance.yml, changelog.d/11742-bounded-statepoints-census.md	The workflow adds a five-minute timeout to the unfiltered hazard census step. The changelog records the timeout and notes that required checker coverage and failure thresholds remain unchanged.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~5 minutes

Change: Bug fix

Merge Risk: ⚪ Minimal · up to 224c4

The five-minute limit affects only optional diagnostics and does not change production behavior or required checks. No PR-introduced merge risk was found; CI remains non-green because of the separate benchmark-freshness failure.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the CI change: adding a bound to the non-gating statepoints hazard census.
Description check	✅ Passed	The description clearly explains the problem, the five-minute timeout, preserved gating behavior, affected checks, and validation results. It does not follow the template headings and does not explici…
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Commit to this branch
• Create a new PR

🧪 Generate unit tests (beta)

• Commit to this branch
• Create a new PR

• Autopilot · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

Autopilot is currently an internal CodeRabbit preview.

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}