The box's 34 red rows of 6 October classified (docs/analysis/ci-failures-2026-10-06.md section 6): 22 iterations, 12 in three real classes (instant deaths with nothing kept, a shared worktree directory, an unread dry run). remote-run.sh now: pre-flight (subcommand, manifest, -p package, --features) refuses in a second with exit 3 and a class; the last 400 lines of every run kept in /srv/builds/_log/runs; a class on every row (compile-error, link-error, test-failure, instant, no-test-matched, slot-timeout, no-dir, preflight-*); a cargo test whose filter matched no test exits 3; a per-worktree lock in checkout and run mode; every red row appended to /srv/ci-red/red.jsonl as source box. red-watch.mjs never posts a box row alone and sends one digest a day (counts per class with each class's guard); the timer runs tick. Shared group cired on the box so the runner and build append to one file. Shown in a sandbox on the box: pass, failing test, empty filter, bad package, bad feature, missing subcommand, compile error, broken manifest, two concurrent runs of one worktree.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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