# RCA — post-merge ci 35339675565 (main @71165e35) Windows unit VOID — doyle 2026-09-18T12:20Z

VERDICT: VOID (timeout-minutes=40 cancel at 40m19s), NOT a red. Every step green: 3254/3254 passed, floor-end PASS 146.8 GB, post-checkout cleanup completed 12:07:23Z; cancelled at "Complete job". Same sha 71165e35 is tested==merged via PR #234 CI 35333276404 (Windows unit 10:51-11:19Z, 28 min).

Step deltas vs the PR CI job 105562570404 (uncontended reference):
- checkout 2:06 vs 0:52 (+74 s); fixture build 7:23 vs 6:07 (+76 s)
- Unit tests step 30:07 vs 20:55 (+9:12): compile 11:24 vs 9:53 (+91 s); nextest wall 1121 s vs 663 s (+458 s)

Population (per-test PASS durations, 3248 joined; files durs-*.tsv here):
- sum 16886 s vs 10278 s; median ratio 1.88x; 1384 tests >2x slower, 317 >2x faster
- per crate: spt-daemon 2.10x, spt-store 1.29x, spt-proto 8.10x (pure compute, tiny tests), spt-msg 6.07x, spt-net 2.81x
- nextest SLOW: 16 vs 11; five spt-store contextstore/monic/syncmerge tests crossed >120 s

MECHANISM: box-wide CPU starvation 11:48-12:07Z (pure-compute tiny tests inflated most; disk-only contention would not do that). Contender NOT attributed from post-hoc evidence: no agent cargo (todlando stood down; my gate ended 10:36Z; my reclaim delete finished 11:36Z before the test phase). Peers asked (deployah/todlando/hertz) for any box activity 11:45-12:07Z; answers appended below when received. Operator desktop load present on the box: 1000xRESIST (game, since 07:17Z), Ableton Live, OBS, voicemeeter; also present during the green PR run, so baseline alone is not proven to be the delta.

Box at 12:10-12:15Z (10-s samples): CPU 38-49 %, disk idle 79-95 %, queue <=0.2, RAM avail 12.1 GB. Matches the PR-CI condition as far as measured.

ADMISSION RULING for golden #3: see JIT-PLAN STATUS 12:20Z. Box sampler running (box-sampler-golden3.log, 30-s cadence, 4 h) so a repeat VOID names its contender.
Third timeout VOID today on this runner = IR-143 (draft) mechanism; the cap/leg-split fix stays a register item, not a golden-time hotfix.

PEER ANSWERS (13:14Z, CLI send): hertz NONE (idle since 11:29Z); todlando NONE. deployah: no cargo (his own 12:08Z report). Contender remains unattributed among agents; operator desktop load is the only measured candidate.