Bug: Intermittent [tier2] browser/components/urlbar/tests/browser/browser_stop.js | uncaught exception - NS_ERROR_ILLEGAL_VALUE: Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIWebProgress.removeProgressListener] at updateBrowserRemote
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2021-06-21 21:28:41+00:00
Resolved: 2021-07-20 17:04:24+00:00

**Filed by:** abutkovits [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=343414406&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/MTLs89npTGGQPboWqsz_vg/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2021-06-21T20:33:26.719Z] 20:33:26     INFO - TEST-START | browser/components/urlbar/tests/browser/browser_stop.js
[task 2021-06-21T20:33:26.809Z] 20:33:26     INFO - GECKO(1564) | [Parent 1564, IPC I/O Parent] WARNING: Failed to launch tab subprocess: file /builds/worker/checkouts/gecko/ipc/glue/GeckoChildProcessHost.cpp:767
[task 2021-06-21T20:33:26.825Z] 20:33:26     INFO - TEST-INFO | started process screentopng
[task 2021-06-21T20:33:27.634Z] 20:33:27     INFO - TEST-INFO | screentopng: exit 0
[task 2021-06-21T20:33:27.638Z] 20:33:27     INFO - Buffered messages logged at 20:33:26
[task 2021-06-21T20:33:27.639Z] 20:33:27     INFO - Entering test bound 
[task 2021-06-21T20:33:27.641Z] 20:33:27     INFO - Buffered messages finished
[task 2021-06-21T20:33:27.649Z] 20:33:27     INFO - TEST-UNEXPECTED-FAIL | browser/components/urlbar/tests/browser/browser_stop.js | uncaught exception - NS_ERROR_ILLEGAL_VALUE: Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIWebProgress.removeProgressListener] at updateBrowserRemoteness@chrome://browser/content/tabbrowser.js:1898:28
[task 2021-06-21T20:33:27.649Z] 20:33:27     INFO - onBackgroundBrowserCrash@resource:///modules/ContentCrashHandlers.jsm:300:14
[task 2021-06-21T20:33:27.650Z] 20:33:27     INFO - onTabCrashed@chrome://browser/content/tabbrowser.js:5822:27
[task 2021-06-21T20:33:27.650Z] 20:33:27     INFO - get loadContext@chrome://global/content/elements/browser-custom-element.js:386:7
[task 2021-06-21T20:33:27.650Z] 20:33:27     INFO - construct@chrome://global/content/elements/browser-custom-element.js:1005:1
[task 2021-06-21T20:33:27.650Z] 20:33:27     INFO - connectedCallback@chrome://global/content/elements/browser-custom-element.js:324:12
[task 2021-06-21T20:33:27.650Z] 20:33:27     INFO - _insertBrowser@chrome://browser/content/tabbrowser.js:2329:24
[task 2021-06-21T20:33:27.650Z] 20:33:27     INFO - addTab@chrome://browser/content/tabbrowser.js:2812:16
[task 2021-06-21T20:33:27.650Z] 20:33:27     INFO - addTab@resource://testing-common/BrowserTestUtils.jsm:2432:23
[task 2021-06-21T20:33:27.650Z] 20:33:27     INFO - @chrome://mochitests/content/browser/browser/components/urlbar/tests/browser/browser_stop.js:15:43
[task 2021-06-21T20:33:27.650Z] 20:33:27     INFO - Tester_execTest/<@chrome://mochikit/content/browser-test.js:1086:34
[task 2021-06-21T20:33:27.650Z] 20:33:27     INFO - Tester_execTest@chrome://mochikit/content/browser-test.js:1126:11
[task 2021-06-21T20:33:27.651Z] 20:33:27     INFO - nextTest/<@chrome://mochikit/content/browser-test.js:943:14
[task 2021-06-21T20:33:27.651Z] 20:33:27     INFO - SimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1041:13
[task 2021-06-21T20:33:27.651Z] 20:33:27     INFO - 
[task 2021-06-21T20:33:27.651Z] 20:33:27     INFO - Stack trace:
[task 2021-06-21T20:33:27.651Z] 20:33:27     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:simpletestOnerror:1964
[task 2021-06-21T20:33:27.651Z] 20:33:27     INFO - chrome://global/content/elements/browser-custom-element.js:get loadContext:386
[task 2021-06-21T20:33:27.651Z] 20:33:27     INFO - chrome://global/content/elements/browser-custom-element.js:construct:1005
[task 2021-06-21T20:33:27.651Z] 20:33:27     INFO - chrome://global/content/elements/browser-custom-element.js:connectedCallback:324
[task 2021-06-21T20:33:27.651Z] 20:33:27     INFO - chrome://browser/content/tabbrowser.js:_insertBrowser:2329
[task 2021-06-21T20:33:27.651Z] 20:33:27     INFO - chrome://browser/content/tabbrowser.js:addTab:2812
[task 2021-06-21T20:33:27.651Z] 20:33:27     INFO - resource://testing-common/BrowserTestUtils.jsm:addTab:2432
[task 2021-06-21T20:33:27.652Z] 20:33:27     INFO - chrome://mochitests/content/browser/browser/components/urlbar/tests/browser/browser_stop.js:null:15
[task 2021-06-21T20:33:27.652Z] 20:33:27     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest/<:1086
[task 2021-06-21T20:33:27.652Z] 20:33:27     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1126
[task 2021-06-21T20:33:27.652Z] 20:33:27     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:943
[task 2021-06-21T20:33:27.652Z] 20:33:27     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/<:1041
[task 2021-06-21T20:33:27.653Z] 20:33:27     INFO - GECKO(1564) | JavaScript error: chrome://browser/content/tabbrowser.js, line 1898: NS_ERROR_ILLEGAL_VALUE: Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIWebProgress.removeProgressListener]
[task 2021-06-21T20:33:27.658Z] 20:33:27     INFO - GECKO(1564) | [Parent 1564, IPC I/O Parent] WARNING: Failed to launch tab subprocess: file /builds/worker/checkouts/gecko/ipc/glue/GeckoChildProcessHost.cpp:767
[task 2021-06-21T20:33:27.658Z] 20:33:27     INFO - Not taking screenshot here: see the one that was previously logged
```