CI flake: Test Suite - Rust (3/4) #6371

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1. clockwork-labs-bot commented on Oct 24, 2026

   

   clockwork-labs-bot

   on Oct 24, 2026

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   Exact-attempt diagnosis

   Inspected only run 40070857537, job 120806222445, Test Suite - Rust (3/4), attempt 1, for PR #6313, head bd997efc9952c024a85c9f5e8084c4ebbb5c2b10. The job API confirms attempt 1; the ticket's 1 -> 2 describes the detector transition, not another attempt inspected here.

   The 10-minute job limit expired during Download Rust test archive, before tests started:

   • Job started at 06:53:55 UTC on October 24; setup finished at 06:54:02.
   • actions/download-artifact@v4 selected rust-tests-linux, 5,599,670,484 bytes (about 5.22 GiB). Download began at 06:54:03.552 UTC.
   • No successful download/digest/extraction completion followed. At 07:03:57.947 UTC, about 9m54s later, the action reported The operation was canceled. The check-run annotation explicitly says The job has exceeded the maximum execution time of 10m0s.
   • The API marks the download step cancelled and Run Rust test partition skipped. No test assertion, panic, or demonstrated product hang occurred.

   Visible root cause: artifact download/handling exhausted the shared job budget. This log cannot distinguish stalled network transfer, slow storage/extraction, or another artifact-action bottleneck. The Node deprecation warnings are not evidence of the cause. Measuring transfer/extraction separately, reducing the archive size, and budgeting artifact setup independently of test execution would help isolate and mitigate this failure.

   Suggested updated title: CI flake: Rust shard exceeds 10m limit downloading rust-tests-linux archive

   Duplicate analysis

   Searched open and closed public issues using rust-tests-linux, Download Rust test archive, and broad artifact timeout, download cancelled, and maximum execution time terms; inspected relevant Test flakes tickets and closed-ticket timelines.

   • Top duplicate candidate: CI flake - Rust test archive transfer exhausts shard job budget #6330, the open consolidated tracker for Rust test archive transfer exhausting the shard job budget. Same download-stage cancellation, ten-minute limit, multi-GiB archive, and tests never starting. This matches the observable mechanism; the underlying transfer bottleneck remains unproven.
   • CI flake: Test Suite - Rust (4/4) #6355 is another open occurrence of this same mechanism. Historical CI flake: Test Suite - Rust (3/4) #6338 is already closed as a duplicate under CI flake - Rust test archive transfer exhausts shard job budget #6330; CI flake - Serial suite loses time budget to artifact setup #6325's serial-suite artifact-budget manifestation was also consolidated there, so neither is a separate canonical candidate.
   • CI flake: Test Suite #6372 is the downstream aggregate-gate symptom in this same run/attempt, not an independent test failure.

   Leaving open: #6330 is not an authorized automatic duplicate-closure target.