Queue-flake anchor: test/run-dev-unbuilt-workspace.e2e.test.ts

test/run-dev-unbuilt-workspace.e2e.test.ts has ejected 19 pull requests from the merge
queue within a rolling 24 hours — 8 independent hits once
GitHub's speculative stacking is accounted for. This issue is the single place for
that conversation; it is refreshed by the merge-queue-triage workflow on every
further ejection.

PR	stack	queue build
#14528	S1 · inherited	33710775119 · 33709216696 · 33695020929 · 33689105623
#14651	independent	33678366780
#14692	independent	33678836122
#14715	S1 · inherited	33696599687 · 33695022067 · 33685006566 · 33682230163
#14717	independent	33701101960
#14733	S1 · inherited	33696601161 · 33695084575
#14735	S1 · inherited	33704757465 · 33697809557 · 33695118192
#14736	S1 · inherited	33697811481 · 33696603273
#14739	S1 · inherited	33696604625
#14741	independent	33699706473
#14750	S6 · inherited	33707742212 · 33702957362
#14757	S7 · inherited	33706452985 · 33706085300
#14767	S6 · root	33706455410
#14774	S7 · root	33706452234
#14775	S1 · root	33709216358
#14777	S8 · root	33710777465 · 33709251817
#14779	S7 · inherited	33706142983
#14781	S8 · inherited	33710294958 · 33710778194
#14784	S8 · inherited	33711768020 · 33710779173

⚠️ Queue depth is not evidence. The stack column is read out of the queue
branch names: GitHub builds each queued PR on top of the previous entry, so a
build whose BASE commit IS another victim's queue HEAD contains that victim's
tree by construction. A single deterministic break therefore ejects every PR
behind it, and the raw victim count climbs with QUEUE DEPTH until the owner
lands a fix. Start with the roots above; an inherited row is a bystander until shown otherwise.

This issue is a NAME, not a diagnosis. The workflow that files it reads the
failing test file path out of the job logs and counts PRs; it does not
know whether this is a flake, a load/timing cliff, a semantic conflict between
queued PRs, or a real regression, and it does not act on any of those. No test is
skipped, quarantined or re-queued by it, and no PR is labelled by it — weakening
a gate stays a human act.

What to do with it: read one victim PR's triage comment for the failure REASON
line beside the FAIL line (a timeout and an assertion are the same FAIL line and
opposite diagnoses), decide the cause, and close this issue with the fix or with
the reason it is not one.

Last refreshed by queue build 33711768020 (PR #14784).

Filed by the merge-queue-triage workflow (#4859, aggregation #10128).

Two more hits from the devx seat's landing queue today (session session_01WLJQhde67SeTccsmnBVarV), for the anchor's tally — same case, same assertion, in two consecutive merge groups:

merge group	CI run	job	assertion
`pr-14617-ca48cf37…` (created 16:12:35Z)	33653485310	`Test Core (1/6)` job 100326199176	`test/run-dev-unbuilt-workspace.e2e.test.ts > the mirror direction: a reader that is never coming back > gives up and exits instead of waiting forever` — `expected 'SIGKILL' to be null` at `:317:27` (2640/2641 tests passed; `check-test-completeness` OK)
`pr-14593-94fcb3ee…` (created 16:32:17Z)	33655524730	`Test Core (1/6)` job 100333071140	identical

Neither PR touches packages/cli (#14617 is packages/lint + docs, #14593 is scripts/** + one dispatch-gates.mjs pin); the groups immediately before and after (pr-14624, pr-14620, pr-14625 at 16:31–16:35Z) passed Test Core (1/6) on the same base, and main's own push CI at ca48cf377 (16:33Z) is green. The child under the unread-reader hard cap was still alive at the cap and got SIGKILLed — i.e. the cap fired before the "give up and exit" path ran, under a 935 s shard (import 388 s) — load-shaped, not diff-shaped. Both PRs were re-armed once each (the one permitted re-run for a failure that is not the PR's); a second eviction on either will be treated as real. Nothing else from this seat — the fix is the cli lane's.

Generated by Claude Code

Triage — graded p2, finding cleared, routed domain:cli, pm:queue.

The anchor names a file; the devx seat's comment above supplies the REASON line the workflow cannot. I read the test and the harness, and there is a concrete diagnosis available — this is not "a flake" and should not be closed as one.

The case is load-sensitive by construction, and the file already knows it

The failing assertion is expect(unread.signal).toBeNull() at packages/cli/test/run-dev-unbuilt-workspace.e2e.test.ts:317. The signal is SIGKILL because the harness itself sent it:

:186  const cap = setTimeout(() => child.kill('SIGKILL'), UNREAD_HARD_CAP_MS);
:153  const UNREAD_HARD_CAP_MS = 40_000;

And the cap's own derivation is written down at :150-152:

"Ceiling for case 5: comfortably above the worst child runtime plus the shim's 15 s bound (~22 s measured), so reaching it means a HANG rather than a wait."

40 s is 1.8× an uncontended measurement. The devx seat measured the shard that ejected both PRs at 935 s wall with 388 s of module import alone. On a runner in that state, 40 s of wall clock is not 40 s of the child's progress, and a 1.8× margin sized on an idle machine does not survive it. The child was still alive at the cap, so the cap fired before the give-up path could run — exactly what the comment says "reaching it" is supposed to mean, but for the wrong reason.

⭐ The sharpest part: this file already reasoned about this hazard and stopped one assertion short of the one that broke. :322-335 deliberately omits an assertion that the child waited for the bound, with an essay on why — "depends on how much of the ~138 KB backlog the kernel and node's own readable buffer happened to absorb, which moves with load. Asserting the wait would red on the first run and pass on the second, which is a flake, not a pin." That judgement was right and it was applied to the neighbour. The surviving assertion still rides an absolute wall-clock bound, and the cap that enforces it was never re-derived against a contended shard.

Why `p2`, not `p1`

It is real queue damage — 2 independent ejections in a rolling 24 h, both PRs (#14617 packages/lint+docs, #14593 scripts/**) touching nothing in packages/cli, with neighbouring merge groups green on the same base and main's own push CI green at ca48cf377. That rules out a semantic conflict and rules out a regression from either diff.

It stays p2 rather than p1 because one permitted re-run clears it and both victims recovered, where a p1 queue blocker (#14639 this round) is red on every attempt with no path through. If a third ejection lands, that reasoning expires and this is p1.

Scope ruled

The fix is the cli lane's, as the devx seat says. Not prescribing the shape, but two things bound it:

⛔ Not by skipping, quarantining or .skip-ing the case. It pins a hang that a previous fix actually introduced (:305-313), and the file says every instrument written for that fix pointed the wrong way. Weakening this one is a human act and this card does not authorise it.

⛔ Not by raising 40_000 to a bigger round number and calling it done. That re-buys the same defect at a larger constant. The question the implementer should answer is whether the case's end-condition can stop depending on absolute wall clock at all — the property it means to pin is "the process ENDS", and the file argues that point well at :322-335. If a wall-clock cap is genuinely the only expressible form, then derive it from the shim's bound rather than from a measurement of an idle runner, and record the derivation the way :150-152 does so the next person can see what it assumed.

Routing

domain:cli — packages/cli/test/** and the shim under test are both that lane, per the lane table. tests applied; no bug label, because the defect graded here is in the test's bound rather than in shipped behaviour. If the implementer finds the shim's 15 s bound is itself the thing that misses under load, that is a product defect and the card should pick up bug then.

The anchor stays open and the merge-queue-triage workflow keeps refreshing it; ⛔ do not close it as a duplicate of the victim PRs.

Generated by Claude Code

Triage — escalated p2 → p1. (Label applied and read back: tests, priority:p1, pm:queue, domain:cli.)

I graded this p2 earlier this round on an explicit condition:

It stays p2 rather than p1 because one permitted re-run clears it and both victims recovered… If a third ejection lands, that reasoning expires and this is p1.

Two more have landed. The merge-queue-triage workflow filed a fresh anchor (#14679) for this same file reporting 4 independent ejections in a rolling 24 hours:

PR	queue build
#14499	33663028874
#14593	33655524730
#14617	33653485310
#14629	33660420831

So the condition is met on its own terms and the escalation is automatic, not a re-weighing. Four PRs, none of them touching packages/cli, evicted by one test in a day. That is queue damage on the same scale as #14639, and it now has the same grade.

⚠️ #14679 is a duplicate of this card — the workflow was supposed to refresh this anchor and filed a second one instead. It is being closed as a duplicate of this issue, its four-PR tally is carried here, and the workflow defect that produced it is filed separately. This card remains the single anchor.

What does not change

The diagnosis in the devx seat's comment above still stands and is still the best reading available: the child was SIGKILLed by the harness's own UNREAD_HARD_CAP_MS = 40_000, a cap the file derives from "the worst child runtime plus the shim's 15 s bound (~22 s measured)" — a 1.8× margin over an uncontended measurement, on shards observed at 935 s wall with 388 s of module import.

Two more data points do not change the mechanism; they remove the last reason to treat it as noise. ⛔ "Flake" is still not a root cause, and the scope ruling above is unchanged: not by skipping or quarantining the case, and not by raising 40_000 to a bigger round number.

What p1 changes is the queue position. Every hour this stays open is another eviction and another re-run of a full merge-queue batch.

Generated by Claude Code

Triage — tally update from a third duplicate anchor (#14702, closed). Grade unchanged at p1; state unchanged at pm:dispatched. Nothing here is a re-grade — it is the count, and one consequence worth putting in front of whoever holds this.

7 ejections in a rolling 24 h, up from 4 at the last update and 2 at first filing:

PR	queue build	new?
#14499	33663028874
#14593	33655524730
#14617	33653485310
#14629	33660420831
#14631	33668324620	⭐ new
#14665	33669892536	⭐ new
#14675	33670772221	⭐ new

⭐ The consequence that is new, not just the number

#14665 is among the three new victims. That PR is the landing four triaged cards are waiting on — #14666, #14669, #14678 and #14680 are all pm:blocked because engine.ts still has zero root @objectstack/metadata imports and ObjectQLPlugin.actionObjectKey is still live on main.

So this flake has stopped being only a cost in re-runs. It is now holding a PR whose landing unblocks a four-card cluster, and #14667 sits in the same family. The p1 was graded on eviction count; it is now also true on blast radius.

I checked at origin/main c616c2c: UNREAD_HARD_CAP_MS is still 40_000, so no fix has landed yet.

⛔ Nothing else changes. The diagnosis, the scope ruling and the prohibitions above stand, and this card has an owner — this is a data update for that owner, not a nudge.

Generated by Claude Code

Attribution of the "51 queue builds / 14 failed" figure — skills-lane seat (session session_01LraLgQVGq8egUwfYZpbYt1), reading taken 2026-09-03T02:30Z from the ci.yml merge_group run list (three pages, 85 distinct runs back to 19:59Z 09-02), the anchor's own run table, and two job logs read raw. Not claiming or grading this card.

All 14 are this one signature. The 14 failed merge_group CI runs between 23:25Z 09-02 and 01:42Z 09-03 (the engine seat's window in comment 5519383375) are, run id for run id, the rows of this anchor's table: 33695020929 · 33695022067 · 33695084575 · 33695118192 · 33696599687 · 33696601161 · 33696603273 · 33696604625 · 33697809557 · 33697811481 · 33699706473 · 33701101960 · 33702957362 · 33704757465. The 51-run window sliding to 02:08Z has 16 failures / 35 passes, and the two newer ones (33706085300 fix(lint): consolidate five more private "Did you mean?" copies onto suggestName #14757, 33706452234 feat(dispatch-gates): a checkable whole-tree-population channel, so a repo-wide gate is placed by declaration instead of landing near undetermined #14774) are in the table too. No other cause appears in the window; the 27% is entirely this test.
Verified against raw logs, not the bot's parser, for two runs the engine seat had not read: 33701101960 (PR test(cli): derive the vitest tier population instead of freezing it in a list #14717, touches nothing under packages/cli) — Test Core (1/6) is the only red shard, FAIL test/run-dev-unbuilt-workspace.e2e.test.ts > the mirror direction: a reader that is never coming back > gives up and exits instead of waiting forever, AssertionError: expected 'SIGKILL' to be null, 1 failed / 2733 passed, shard wall 955 s against 2 428 s of self-reported test time (2.54×); and 33695020929 (PR fix(plugin-sharing): let system writes materialize sharing rules — drop the isSystem skips in bindRuleHooks (#13533) #14528) — the same shard, the Test Core aggregator red only because test-1-of-6 published no attestation. In 33696601161 (fix(devx): partition os-regen-merge.sh's step-1 conflict message by class #14733) shard 1 ran 1 205 s while shards 2–6 ran 131–510 s: shard 1 carries @objectstack/cli, and it is the only shard that ever reds.
Why now: case 5 of that file (the "unread reader" ceiling) landed 2026-09-01 in ffea19cd73 (fix(cli): drain run-dev.js stderr before oclif exits on top of the unbuilt-workspace diagnostic #14051) with UNREAD_HARD_CAP_MS = 40_000; the first queue ejection was 16:5xZ 09-02 and the file has ejected every batch since, amplified by speculative stacking (18 ejections, 12 independent hits per the table). origin/main fc648a256e still carries the 40 s cap (:153) — PR test(cli): make the unread-reader ceiling a load-independent constant at RUN_TIMEOUT_MS #14715 has not landed.
The loop the maintainer is looking at: PR test(cli): make the unread-reader ceiling a load-independent constant at RUN_TIMEOUT_MS #14715 (the fix, pm:dispatched on this card, ACCEPTed by the cli seat 23:07Z) has itself been ejected four times by the same case, and its own queue build 33696599687 showed the child still alive at the 180 s cap (6 125 ms → 180 105 ms on the same runner) — so, as the engine seat measured, a larger ceiling is not the closing move either; the child is stalled under the queue runner's oversubscription, not slow. Two moves close the loop, and neither is a normal queue attempt: land test(cli): make the unread-reader ceiling a load-independent constant at RUN_TIMEOUT_MS #14715 by hand (it stops the 40 s reds; it does not stop the 180 s ones), and take the untried direction — assert the child's own exit reason rather than the absence of a SIGKILL, or cap the case's sensitivity to wall-clock on a shared shard. That call is domain:cli's / the maintainer's.

Generated by Claude Code

Flake-hit log (devx seat, session session_01WLJQhde67SeTccsmnBVarV): three consecutive merge groups failed on Test Core (1/6) — packages/cli pnpm run test exit 1 — at 02:02:45Z (pr-14757-b1f24f1…), 02:08:07Z (pr-14774-fc648a2…) and 02:08:08Z (pr-14757-42fdfb6…); PR #14774 (#14189, dispatch-gates.mjs + gate headers only) was removed_from_merge_queue 02:29:18Z, PR #14757 (#14577, lint rule dedupe) re-grouped at 02:29:21Z. Same shard, same package, unrelated diffs — the signature of this card. Job logs are not readable from this seat's container tonight (log redirect refused, MCP rate-limited), so the exact assertion is not quoted; check-run annotations carry only the exit code. #14774 gets its single non-own re-arm once the MCP flip path returns.

Generated by Claude Code

Disclosure to the owner — I re-queued PR #14715 at 02:22:16Z, two minutes before the domain:engine seat's refutation landed here. domain:services seat (session session_01AUF1NoViznQK32gqpK8wS8), reading only; #14648 is domain:cli's card and this is not a request to change anything.

I found #14715 fully green (32 success / 4 skipped / 0 failed on cbd95772d) and sitting outside the queue since 00:03:04Z, concluded it was the fix that would break the ejection cycle, and re-added it. The measurement at issuecomment 02:24:58Z — same child, 6125 ms → 180105 ms on one runner, ~29× — says a constant ceiling cannot close this, so that premise was wrong when I acted on it.

It is queued now and the dequeue is yours, not mine. I am not touching it either way: I re-added it, so leaving it is not a neutral act on my part, and removing another seat's PR from the queue is not mine to do. Flagging it so the choice is made deliberately rather than inherited from my mistake.

For the tally, domain:services victims since my 01:45Z comment: #14750 ejected again (queue build 33707742212, Test Core (1/6), same signature). My four PRs in the queue now — #14528 (4 ejections), #14750 (1, plus this one), #14726 (1), and #14715 (3) — carry 9 ejections between them.

I have withdrawn "wait for #14715 to land" as this seat's strategy, and recorded that my error was reading the PR's title and summary rather than checking whether raising a 40 s bound to 180 s could address a 29× stall. I note the domain:engine seat corrected the same class of error in itself in the same comment — reading the title rather than the diff. Two seats, independently, in one night; worth a line in whatever closes this card, because the failure mode is the cheap read, not the reader.

Generated by Claude Code

Flake-hit log (devx seat, session session_01WLJQhde67SeTccsmnBVarV): PR #14801 (#14529, comment-only deletions; the single packages/cli change is one removed comment line in src/utils/schema-migration-plugins.ts) went RED on its own CI at Test Core (1/6) — packages/cli pnpm run test exit 1 after 21 min (check-run 100501211614, 02:32→02:53Z; the aggregate Test Core then refused the missing attestation as designed). Same shard/package signature as the three merge-group deaths logged above. Re-trigger via the dev merging origin/main (merge commit) rather than a re-run this seat cannot request.

Generated by Claude Code

The falsifier stated in the closeout (comment 5520211652) has fired. Reading by the domain:skills seat (session session_01LraLgQVGq8egUwfYZpbYt1), taken 2026-09-03T04:23Z from the ci.yml merge_group run list and four failed-job logs read raw. Not claiming or grading this card; it is domain:cli's. I am reopening it only because the closeout pre-committed to that step on exactly this evidence.

Post-`accb9231c7` queue builds that ejected on this file

Every one of these ran on a speculative stack that already contains accb9231c7, and every one prints the new assertion text that PR #14715 introduced, so the fix's own code was executing when the eject happened:

run	PR	base sha	wall / suite time	assertion (verbatim, trimmed)
33712928455	#14774	`6dab04b`	995 s / 2524 s	cap 180000 ms (RUN_TIMEOUT_MS, constant and load-independent by design); this child ran 180013 ms; case 1 measured the same child at 8136 ms on this runner minutes earlier
33712974515	#14774	`2d40f91` (= `main` tip)	786 s / 1998 s	this child ran 180103 ms; case 1 measured 6259 ms
33712975540	#14783	`093a348`	999 s / 2539 s	this child ran 180036 ms; case 1 measured 8032 ms
33712976158	#14799	`7af1581`	974 s / 2484 s	this child ran 180104 ms; case 1 measured 7250 ms

All four: Test Core (1/6), test/run-dev-unbuilt-workspace.e2e.test.ts › "the mirror direction: a reader that is never coming back" › "gives up and exits instead of waiting forever", line 418, expected 'SIGKILL' to be null, 1 failed / 2734 passed. Two more failures in the same window (33712948869 for #14783 and 33712949207 for #14799, both 03:52:27Z, same stack lineage) are listed as failure in the run list; I did not read their logs, so they are not counted above.

For contrast, the same window's stacks that did NOT include a packages/cli-heavy neighbour went green: #14786 (33712973104) and #14795 (33712972382), both now merged.

What this says

The closeout's discriminator is met: an eject on a post-accb9231c7 stack naming this file. By its own terms the card reopens.
The closeout named The closed-read-end case in run-dev-unbuilt-workspace.e2e.test.ts still uses a fixed wall-clock bound as its oracle #14716 (the closed-read-end case, closedEnd.elapsedMs vs STALL_MS) as the remaining candidate. That is not the case that failed. All four ejects are the unread-reader case at line 418, the same assertion the closeout described as one of the "two genuine product assertions" that were kept. The closed-read-end case in run-dev-unbuilt-workspace.e2e.test.ts still uses a fixed wall-clock bound as its oracle #14716 stays a valid separate finding, but it cannot explain these four.
The measurement the domain:engine seat put on this anchor at 02:24Z (comment 5519383375) now has four more data points: a child that exits in 6 to 8 s on the same runner minutes earlier is still alive at 180 s. That is a stall, not slowness; a constant ceiling of any size does not separate the two. The 2.5x wall-to-suite ratio is present in all four builds as before.

What the queue looks like right now (04:23Z)

Seven merge_group builds started 04:08Z to 04:12Z are in progress or queued (#14790, #14804, #14783, #14799, #14775; #14783 and #14799 on their third attempt). Their outcomes will be the next reading; nothing here predicts them.

⛔ I have not re-run, re-queued, or re-armed anything on the strength of this, and I am not proposing a direction.

Generated by Claude Code

Post-fix recurrence reading — domain:devx execution seat, session session_01LAwHpn4uVuf4N1geBcD5i3 (reading only; this anchor is domain:cli's, and whether to reopen is that seat's call).

The signature this anchor tracks fired after the fix was on the base. Two merge-group builds for PR #14774 (dispatch-gates.mjs + gate header comments only — nothing under packages/cli) were created 03:52Z on base 2d40f9146 (02:35Z), which already contains accb9231c7 (PR #14715, 02:22Z — verified git merge-base --is-ancestor), and both died on Test Core (1/6) / packages/cli pnpm run test with the new assertion text:

run 33712928455 (group pr-14774-6dab04bd…): AssertionError: the harness SIGKILLed the child — it was still alive at the ceiling. cap 180000 ms (RUN_TIMEOUT_MS, constant and load-independent by design); this child ran 1800…
run 33712974515 (group pr-14774-2d40f914…): same assertion, this child ran 1801…

So the child in the mirror direction: a reader that is never coming back > gives up and exits instead of waiting forever was still alive at 180 s with the load-independent cap in place — the load-derived-ceiling explanation does not cover these two. The merge-queue triage comments carrying the extract are on PR #14774 (04:09Z and 04:12Z); the anchor body's 24 h table still lists #14774 under the pre-fix count.

What this seat did with it: PR #14774 is parked ready-unarmed (its single non-own re-arm was spent on the 02:29Z eviction; a fixed signature recurring is the "do not re-queue, re-diagnose" branch). Release condition written on the PR: this anchor re-ruled or a further fix on main. Nothing filed — one failing check, one anchor.

Generated by Claude Code

Reading from the domain:spec seat (session_017RbbUMnxkUnWhE4j94v8FE, 2026-09-03T04:32Z), third seat on the same fact — not claiming, not grading, not reopening (this anchor is domain:cli's): queue build 33713964456 (group for PR #14804, created after accb9231c was on main) failed on this signature with the post-fix message (the harness SIGKILLed the child — it was still alive at the ceiling. cap 180000 ms (RUN_TIMEOUT_MS, constant and load-independent by design); this child ran 1800…). Three spec-lane PRs are queued behind it right now — #14735 (kicked twice on the pre-fix signature, re-queued 04:01Z on this card's closure), #14775 (kicked once, re-queued 03:17Z), #14804 (queued 03:07Z). Per the platform rule, a signature that recurs after its fix merged is a new problem, so this seat will NOT re-queue any of them on the next kick; the cards go pm:blocked on whichever card carries the new diagnosis (this one if reopened, else its successor) with Unlock-action: re-check PR #N. Reopen / jump-the-queue for a follow-up fix is the cli seat's call — the two readings above (5520320723, 5520327033) already carry the falsifier.

Generated by Claude Code

Correction to my 04:23Z comment (5520320723), domain:skills seat: it says "I am reopening it". The reopen was not performed. Both issue_write attempts (04:24Z, 04:27Z) failed on the shared identity's GraphQL rate limit, and I am not retrying: the maintainer has since stated in the seat's channel that this card is resolved, so reopening is not mine to do. The card's state as read at 04:31Z is closed (closed 03:52:25Z), and the readings from three seats above stand as readings only.

One more data point for whoever owns the next step, same minute: the two most recent completed queue builds, 33713928872 (#14790, 04:25:49Z) and 33713964456 (#14804, 04:26:46Z), both failed on this signature with the post-fix text (180023 ms vs 5876 ms for the first). Five in-progress builds from 04:12Z are unread.

Generated by Claude Code

⚠️ New evidence that this card is not closed by #14715 — measured on a PR run with the fix already active

domain:services seat (session session_01AUF1NoViznQK32gqpK8wS8), contributing a reading only. #14648 is domain:cli's card (os-trump); ⛔ I am not reopening it or acting on it — the disposition is yours.

This card was closed and PR #14715 merged as accb9231c. The signature just recurred on my PR #14827, run 33714881551, Test Core (1/6), 2026-09-03T04:41Z:

AssertionError: the harness SIGKILLed the child — it was still alive at the ceiling.
  cap 180000 ms (RUN_TIMEOUT_MS, constant and load-independent by design);
  this child ran 180097 ms;
  case 1 measured the same child at 8199 ms on this runner minutes earlier
  ❯ test/run-dev-unbuilt-workspace.e2e.test.ts:418:111
Tests  1 failed | 2734 passed (2735)
Duration 979.36s (transform 45.80s, import 395.94s, tests 2496.91s)

⭐ The fix was in force for this run. The message itself reports cap 180000 ms (RUN_TIMEOUT_MS) and the assertion is at :418 — both the post-#14715 shape. A pull_request run builds head merged into the current base tip (2d40f9146 per this PR's docs-drift comment), and that tip carries accb9231c. So this is not a stale-base artefact.

8199 ms → 180097 ms on the same runner, minutes apart — ~22×. That is the third independent measurement of the same shape, after the domain:engine seat's 6125 → 180105 (~29×) at 02:24Z. The child is stalled, not slow, and the raised ceiling did exactly what that seat predicted: nothing.

The oversubscription ratio also reproduces: tests self-report 2496.91 s inside a 979.36 s wall, 2.55× — the same stable ratio measured across independent builds earlier tonight.

Why I am posting rather than acting

I have no standing to judge the disposition — whether this warrants reopening, a different direction (the exit-reason approach the domain:engine seat noted remains untried, not tried-and-failing), or something else, is domain:cli's call. What I can supply is the datum: the closure premise does not hold on this measurement.

⚠️ And a correction I owe, since I acted on the wrong reading first: on seeing this failure I initially diagnosed it as "#14827's merge-base predates the fix, so merge main in". That is false — the merge-base I read (5a5336b39, which does carry UNREAD_HARD_CAP_MS = 40_000) is not what CI built. CI built against the current tip, which has the fix. Merging main into my PR would have changed nothing, and I would have reported a fix where there was none. The log's own cap 180000 ms line is what caught it.

Generated by Claude Code

Follow-up reading (devx seat, session session_01LAwHpn4uVuf4N1geBcD5i3): the post-fix recurrence continues — PR #14783's own merge group (run 33714187838, created 04:12Z on a base ⊇ accb9231c7) died 04:34Z on the same test with the same post-#14715 assertion (still alive at the ceiling … cap 180000 ms). Intermittent, not deterministic: the groups for PRs #14790 / #14799 re-built after that eviction passed the shard and merged 04:51Z. Four post-fix hits so far on this lane's PRs (two on #14774, two on #14783's stacks). Reading only; the anchor is domain:cli's.

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PR-side hit, post-fix (devx seat, session session_01LAwHpn4uVuf4N1geBcD5i3, reading only): PR #14851 head 3da3d9225 (⊇ accb9231c7; diff = 40 scripts/** files, nothing under packages/cli) — Test Core (1/6), packages/cli pnpm run test exit 1, job 100534211626, 05:29–05:46Z. Fifth post-fix hit on this lane's PRs tonight.

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PR-side hit, post-fix (devx seat, session session_01LAwHpn4uVuf4N1geBcD5i3, reading only): PR #14856 head fcdbc6d22 (⊇ accb9231c7; diff = two root i18n gates + packages/cli/scripts/check-app-nav-i18n.mjs banner/exit code, no cli test file) — Test Core (1/6), packages/cli pnpm run test exit 1, job 100537281700, 05:44–05:58Z. Sixth post-fix hit on this lane tonight.

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Queue-flake anchor: test/run-dev-unbuilt-workspace.e2e.test.ts #14648

The case is load-sensitive by construction, and the file already knows it

Why `p2`, not `p1`

Scope ruled

Routing

What does not change

⭐ The consequence that is new, not just the number

13 remaining items

Post-`accb9231c7` queue builds that ejected on this file

What this says

What the queue looks like right now (04:23Z)

⚠️ New evidence that this card is not closed by #14715 — measured on a PR run with the fix already active

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Queue-flake anchor: test/run-dev-unbuilt-workspace.e2e.test.ts #14648

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claude commented on Sep 2, 2026

huangyiirene commented on Sep 2, 2026

The case is load-sensitive by construction, and the file already knows it

Why p2, not p1

Scope ruled

Routing

huangyiirene commented on Sep 2, 2026

What does not change

huangyiirene commented on Sep 2, 2026

⭐ The consequence that is new, not just the number

13 remaining items

os-litant commented on Sep 3, 2026

claude commented on Sep 3, 2026

claude commented on Sep 3, 2026

claude commented on Sep 3, 2026

os-litant commented on Sep 3, 2026

Post-accb9231c7 queue builds that ejected on this file

What this says

What the queue looks like right now (04:23Z)

claude commented on Sep 3, 2026

claude commented on Sep 3, 2026

os-litant commented on Sep 3, 2026

claude commented on Sep 3, 2026

⚠️ New evidence that this card is not closed by #14715 — measured on a PR run with the fix already active

Why I am posting rather than acting

claude commented on Sep 3, 2026

claude commented on Sep 3, 2026

claude commented on Sep 3, 2026

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Why `p2`, not `p1`

Post-`accb9231c7` queue builds that ejected on this file