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Two flakes found by main going red over the weekend - #13

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Ssebv merged 2 commits into
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fix/monday-flakes
Aug 17, 2026
Merged

Ssebv merged 2 commits into
mainfrom
fix/monday-flakes

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@Ssebv Ssebv commented Aug 17, 2026

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Both merge runs after PR #10 failed on main while every branch run was green — different jobs each time, both real:

  • The series test was time-of-day dependent. hour_a = now - 2h plus twenty minutes crossed into the next hour bucket whenever the run started past minute 40 — a 33 % failure window that branch CI dodged by luck. Now anchored to a truncated hour, deterministic at any wall-clock time.
  • The Dashboard job's toolchain was a lottery. trunk-action with version: latest handed one run trunk 0.19.1 — whose bundled wasm-opt (v116) predates the bulk-memory operations rustc 1.97 emits — and the next run 0.21.14 (wasm-opt v123). Pinned to 0.21.14, the version developed against locally.

🤖 Generated with Claude Code

Ssebv and others added 2 commits August 17, 2026 07:32
`hour_a + 20min` crossed into the next bucket whenever the test ran
past minute 40 — a 33 % failure window per hour that the branch runs
dodged by luck and main's merge run eventually hit.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The same commit failed and passed an hour apart: the resolver gave one
run trunk 0.19.1, whose bundled wasm-opt predates the bulk-memory ops
rustc 1.97 emits, and the next run 0.21.14. Pinned to the version
developed against locally.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
@Ssebv
Ssebv merged commit 69e4156 into main Aug 17, 2026
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@Ssebv
Ssebv deleted the fix/monday-flakes branch August 17, 2026 11:42
@Ssebv Ssebv mentioned this pull request Aug 18, 2026
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