fix(ci): classify host lock starvation as infrastructure (#14550) (#14552)

The main CI watcher and the PR scan share one infrastructure-signature
list. A per-host SDK Java test lock starving past its flock budget carried
no signature, so main run 39104863059 filed #14550 for a lane in which no
test ever ran.

The annotation names a lock budget, not an assertion: several runner
instances share one HOME on the ECS pool, so a fast-tier job can wait
behind sibling Maven holds that outlast its own acquisition budget. Main
runs now rerun that class once instead of filing, and a red check on a PR
is reran once; the existing attempt-2 guard still files when the
starvation is not transient.

The new pattern also covers the E2E and release docker lock messages,
which share the same starvation semantics.

.github/workflows/main-ci-failure-issue.yml

@@ -132,7 +132,7 @@ jobs:
           # test pins the equality. There the same annotation class auto-reruns
           # a PR's red check; here it suppresses the per-commit issue.
           # Full rationale → qwen-autofix.md#af-076
-          INFRA_FAILURE_SIGNATURES: 'lost communication with the server|No space left on device|ENOSPC|received a shutdown signal|The runner has received|Failed to initialize container|runner (was|has been) (lost|terminated)|invalid index-pack output|RPC failed|failed to be acquired'
+          INFRA_FAILURE_SIGNATURES: 'lost communication with the server|No space left on device|ENOSPC|received a shutdown signal|The runner has received|Failed to initialize container|runner (was|has been) (lost|terminated)|invalid index-pack output|RPC failed|failed to be acquired|lock not acquired within'
         run: |-
           jobs_json="${RUNNER_TEMP}/run-jobs.json"
 

.github/workflows/qwen-autofix.md

@@ -2355,7 +2355,9 @@ the PR and clears on a re-run (observed: #7490's E2E "runner lost
 communication"; #6506's checkout "RPC failed; curl 92" / "fetch-pack:
 invalid index-pack output" — both green on the rerun; #13622's Classify
 PR, "repeatedly failed to be acquired" — the hosted pool never assigned a
-runner, so zero steps executed). The scan
+runner, so zero steps executed; #14550's SDK Java lane, "sdk-java host
+lock not acquired within 40 minutes" — the per-host test lock starved
+behind cross-run pool traffic and no test ran). The scan
 auto-reruns those failed jobs ONCE, guarded by run_attempt so a persistent
 infra problem cannot loop. Deliberately conservative — only unambiguous
 machine/transport failures, never a bare test-level timeout, which could be

.github/workflows/qwen-autofix.yml

@@ -147,10 +147,12 @@ env:
   NON_BLOCKING_CHECKS: '["review-pr"]'
   # Failed-check annotation patterns that mean the INFRASTRUCTURE died, not the
   # code — a self-hosted runner losing the server, the disk filling, a runner
-  # shutdown, a git fetch/clone dying mid-transfer, or the hosted pool never
-  # handing the job a runner (#13622: "repeatedly failed to be acquired").
+  # shutdown, a git fetch/clone dying mid-transfer, the hosted pool never
+  # handing the job a runner (#13622: "repeatedly failed to be acquired"), or a
+  # shared-host test lock starving past its per-acquisition budget (#14550:
+  # "sdk-java host lock not acquired within 40 minutes").
   # Full rationale → qwen-autofix.md#af-076
-  INFRA_FAILURE_SIGNATURES: 'lost communication with the server|No space left on device|ENOSPC|received a shutdown signal|The runner has received|Failed to initialize container|runner (was|has been) (lost|terminated)|invalid index-pack output|RPC failed|failed to be acquired'
+  INFRA_FAILURE_SIGNATURES: 'lost communication with the server|No space left on device|ENOSPC|received a shutdown signal|The runner has received|Failed to initialize container|runner (was|has been) (lost|terminated)|invalid index-pack output|RPC failed|failed to be acquired|lock not acquired within'
   # Upper bound on review targets emitted per scan (fan-out defense-in-depth;
   # excess is logged and deferred to the next scan).
   # Full rationale → qwen-autofix.md#af-077

scripts/tests/main-ci-failure-issue-workflow.test.js

@@ -305,6 +305,11 @@ describe('main CI failure issue workflow', () => {
       expect(infraStep.env.INFRA_FAILURE_SIGNATURES).toContain(
         'lost communication with the server',
       );
+      // A per-host lock starvation (#14550) is the same class: the annotation
+      // names a lock budget, not an assertion.
+      expect(infraStep.env.INFRA_FAILURE_SIGNATURES).toContain(
+        'lock not acquired within',
+      );
     });
 
     it('classifies per failed job and only when EVERY one is infrastructure', () => {

scripts/tests/qwen-autofix-workflow.test.js

@@ -1320,6 +1320,14 @@ describe('qwen-autofix workflow', () => {
           'The self-hosted runner lost communication with the server',
       }),
     ).toEqual({ reran: true, continued: true });
+    // A per-host test lock starving past its budget (#14550) is capacity
+    // contention on the shared pool, not the PR's change: no test ran.
+    expect(
+      run({
+        checks: [FAIL],
+        annotations: 'sdk-java host lock not acquired within 40 minutes',
+      }),
+    ).toEqual({ reran: true, continued: true });
     // A REAL failure (no infra signature in the annotation) → never rerun; the
     // agent/human handles it. This is the gate that stops masking real bugs.
     expect(