Filed unassigned, not routed, not graded — triage's call. Surfaced while triaging PR #11281's queue ejection (domain:cli seat). ⛔ No fix proposed here; the remedy is a judgement about CI toolchain provisioning that this seat does not own.
The signature
Queue build 32629872070, job Test Core (5/6), 2026-08-23 09:02:30Z:
! Corepack is about to download https://registry.npmjs.org/pnpm/-/pnpm-10.31.0.tgz
node:internal/assert/utils:77
throw err;
^
AssertionError [ERR_ASSERTION]: The expression evaluated to a falsy value:
assert(!this.paused)
at Parser.finish (node:internal/deps/undici/undici:6165:9)
at TLSSocket.<anonymous> (node:internal/deps/undici/undici:6499:36)
at TLSSocket.emit (node:events:531:35)
at endReadableNT (node:internal/streams/readable:1698:12)
code: 'ERR_ASSERTION', actual: false, expected: true, operator: '=='
Node.js v22.23.2
##[error]Process completed with exit code 1
Node v22.23.2, runner-provisioned. The crash is inside Node's bundled undici HTTP parser finishing a TLS response — i.e. in the download, not in anything the repo authored.
Where it happens, and why it is invisible as a test failure
The failing step is Verify pnpm version (.github/workflows/ci.yml:294-295, and the same pair at :1074 and :1213):
- name: Verify pnpm version
run: pnpm --version
That step asserts nothing of its own — the AssertionError comes from Corepack materialising pnpm on first invocation. The job dies in setup, and the run's own guard confirms it never reached the suite:
No test log — the test step did not get far enough to produce one.
Why this is worth a card rather than a shrug
⚠️ It presents as a test failure and is not one. The merge-queue triage bot reported it as "failed step: Verify pnpm version" attached to a bare AssertionError excerpt, with no test file name. Its own guidance says a timeout implies load while an AssertionError implies a real behaviour change — a good heuristic that inverts here, because the assertion comes from Node's HTTP parser rather than from test code. A reader following the template lands on "real regression, fix the PR" for a PR that cannot possibly have caused it.
⚠️ Cross-PR aggregation was unavailable for this ejection, and the bot says so explicitly: "这不是「没有同签名的其他 PR」，是这一轮没测到" — no FAIL line carried a parseable test file, so the aggregator had nothing to group on. This signature is therefore structurally invisible to the existing same-signature machinery, which keys on test files. That is the part that makes it accrete silently.
Context, not a claim: the same comment reports 71 queue failures in the previous 24h excluding this one. ⛔ I have not measured how many share this signature and am not asserting a proportion — establishing that is exactly what the aggregator cannot currently do for this shape.
Blast radius
Every queue build downloads pnpm through Corepack per job. A failure here ejects the PR and re-builds every PR behind it in the queue, so the cost is not confined to the unlucky run.
Dedup
Searched before filing: no open card carries this signature (corepack / undici / Parser.finish all return zero), and the zero-hit was reverse-checked against a control query that returns 43 — so the index is live and the absence is real, not a broken search. Nearest neighbours, all closed and all different causes: #10125 (queue-wide Test Core red), #9371 (vitest teardown race), #10447 (a named test's flake anchor).
Disposition of the PR that surfaced it
#11281 re-queued once, unmodified, on the "died before any test body ran" ground. If it ejects again on this same signature it will be treated as a real blocker rather than retried. ⛔ Nothing was skipped, disabled or quarantined, and this signature was not added to the flaky ledger — ledger entries are a human escalation.
Filed unassigned, not routed, not graded — triage's call. Surfaced while triaging PR #11281's queue ejection (
domain:cliseat). ⛔ No fix proposed here; the remedy is a judgement about CI toolchain provisioning that this seat does not own.The signature
Queue build 32629872070, job Test Core (5/6), 2026-08-23 09:02:30Z:
Node v22.23.2, runner-provisioned. The crash is inside Node's bundled undici HTTP parser finishing a TLS response — i.e. in the download, not in anything the repo authored.
Where it happens, and why it is invisible as a test failure
The failing step is
Verify pnpm version(.github/workflows/ci.yml:294-295, and the same pair at:1074and:1213):That step asserts nothing of its own — the
AssertionErrorcomes from Corepack materialising pnpm on first invocation. The job dies in setup, and the run's own guard confirms it never reached the suite:Why this is worth a card rather than a shrug
AssertionErrorexcerpt, with no test file name. Its own guidance says a timeout implies load while an AssertionError implies a real behaviour change — a good heuristic that inverts here, because the assertion comes from Node's HTTP parser rather than from test code. A reader following the template lands on "real regression, fix the PR" for a PR that cannot possibly have caused it.Context, not a claim: the same comment reports 71 queue failures in the previous 24h excluding this one. ⛔ I have not measured how many share this signature and am not asserting a proportion — establishing that is exactly what the aggregator cannot currently do for this shape.
Blast radius
Every queue build downloads pnpm through Corepack per job. A failure here ejects the PR and re-builds every PR behind it in the queue, so the cost is not confined to the unlucky run.
Dedup
Searched before filing: no open card carries this signature (
corepack/undici/Parser.finishall return zero), and the zero-hit was reverse-checked against a control query that returns 43 — so the index is live and the absence is real, not a broken search. Nearest neighbours, all closed and all different causes: #10125 (queue-wideTest Corered), #9371 (vitest teardown race), #10447 (a named test's flake anchor).Disposition of the PR that surfaced it
#11281 re-queued once, unmodified, on the "died before any test body ran" ground. If it ejects again on this same signature it will be treated as a real blocker rather than retried. ⛔ Nothing was skipped, disabled or quarantined, and this signature was not added to the flaky ledger — ledger entries are a human escalation.