Bug: Intermittent browser/base/content/test/tabs/browser_tabbar_visibility.js | Unable to find a rejection expected by expectUncaughtRejection. - 1 == 0 - JS frame :: resource://testing-common/PromiseTestUtils.jsm : assertNoMoreExpectedRejections : line 289
Status: RESOLVED
Priority: P5
Resolution: FIXED
Created: 2022-02-01 02:45:33+00:00
Resolved: 2022-02-07 06:19:20+00:00

**Filed by:** csabou [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=366252592&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/XS9gDtRgScSNEyojOPDBAg/runs/0/artifacts/public/logs/live_backing.log
**Reftest URL:** https://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/XS9gDtRgScSNEyojOPDBAg/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

---
```
[task 2022-02-01T00:03:55.515Z] 00:03:55     INFO - TEST-PASS | browser/base/content/test/tabs/browser_tabbar_visibility.js | tabbar should be collapsed - 
[task 2022-02-01T00:03:55.515Z] 00:03:55     INFO - Console message: [JavaScript Error: "TypeError: can't access property "selectionController", editor is null" {file: "resource:///modules/UrlbarValueFormatter.jsm" line: 342}]
[task 2022-02-01T00:03:55.515Z] 00:03:55     INFO - Leaving test bound testWindowOpen
[task 2022-02-01T00:03:55.515Z] 00:03:55     INFO - Buffered messages finished
[task 2022-02-01T00:03:55.516Z] 00:03:55     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_tabbar_visibility.js | Unable to find a rejection expected by expectUncaughtRejection. - 1 == 0 - JS frame :: resource://testing-common/PromiseTestUtils.jsm :: assertNoMoreExpectedRejections :: line 289
[task 2022-02-01T00:03:55.516Z] 00:03:55     INFO - Stack trace:
[task 2022-02-01T00:03:55.516Z] 00:03:55     INFO - resource://testing-common/PromiseTestUtils.jsm:assertNoMoreExpectedRejections:289
[task 2022-02-01T00:03:55.516Z] 00:03:55     INFO - chrome://mochikit/content/browser-test.js:nextTest:626
[task 2022-02-01T00:03:55.516Z] 00:03:55     INFO - chrome://mochikit/content/browser-test.js:testScope/test_finish/<:1594
[task 2022-02-01T00:03:55.517Z] 00:03:55     INFO - chrome://mochikit/content/browser-test.js:run:1509
[task 2022-02-01T00:03:55.525Z] 00:03:55     INFO - GECKO(1575) | [Child 1847, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_DoneGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-01T00:03:55.527Z] 00:03:55     INFO - GECKO(1575) | [Child 1847, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_StartedGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-01T00:03:55.530Z] 00:03:55     INFO - GECKO(1575) | MEMORY STAT vsizeMaxContiguous not supported in this build configuration.
[task 2022-02-01T00:03:55.531Z] 00:03:55     INFO - GECKO(1575) | MEMORY STAT | vsize 11527MB | residentFast 526MB | heapAllocated 232MB
[task 2022-02-01T00:03:55.546Z] 00:03:55     INFO - TEST-OK | browser/base/content/test/tabs/browser_tabbar_visibility.js | took 5665ms
```