experiment (do not merge): do Test hangs stop on bun canary?

Draft
SA
1mo ago
+29-1

Measurement only. Do not merge.

About 5% of Test jobs hang in a synchronous spawn (oven-sh/bun#43697). oven-sh/bun#44581 merged on 2026-10-05 and names the same cause; it is in canary but not in a release.

This runs the Test job 30 times on the pinned bun (1.4.2) and 30 times on canary, in the same push. A hang ends at 360 s with exit code 124 and prints the watchdog dump.

Summary by cubic

Measures whether the Test job's synchronous spawn hang (oven-sh/bun#43697) is fixed in Bun canary.

  • Runs the Test job 60 times on the npm-pinned canary (1.4.2-canary.20261007.1); a hang ends at 360 s with exit code 124 and prints the watchdog dump.
  • The --isolate removal step is present but inactive since the matrix only runs npmcanary.
  • Measurement only — do not merge.