Bug: Intermittent unknown test url | uncaught exception - TypeError: aBrowser.webProgress is undefined at updateBrowserRemoteness@chrome://browser/content/tabbrowser.js:1834:7
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2020-05-15 02:43:14+00:00
Resolved: 2023-06-19 12:02:50+00:00

**Filed by:** ccoroiu [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer.html#?job_id=302354330&repo=mozilla-beta
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/QaTjOTMKQ6mS8Jtssfbz9Q/runs/0/artifacts/public/logs/live_backing.log

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task 2020-05-14T23:05:50.332Z] 23:05:50     INFO - TEST-START | browser/base/content/test/alerts/browser_notification_do_not_disturb.js
[task 2020-05-14T23:05:50.337Z] 23:05:50     INFO - GECKO(2260) | MEMORY STAT | vsize 7473MB | residentFast 268MB | heapAllocated 123MB
[task 2020-05-14T23:05:50.337Z] 23:05:50     INFO - TEST-OK | browser/base/content/test/alerts/browser_notification_do_not_disturb.js | took 12ms
[task 2020-05-14T23:05:51.788Z] 23:05:51     INFO - GECKO(2260) | [Parent 2260, IPC Launch #1] WARNING: parent SendMessage() failed: 0x10000003 (ipc/send) invalid destination port: file /builds/worker/checkouts/gecko/ipc/glue/GeckoChildProcessHost.cpp, line 1348
[task 2020-05-14T23:05:51.788Z] 23:05:51     INFO - GECKO(2260) | [Parent 2260, Gecko_IOThread] WARNING: Failed to launch tab subprocess: file /builds/worker/checkouts/gecko/ipc/glue/GeckoChildProcessHost.cpp, line 743
[task 2020-05-14T23:05:51.788Z] 23:05:51    ERROR - GECKO(2260) | TEST-UNEXPECTED-FAIL | unknown test url | uncaught exception - TypeError: aBrowser.webProgress is undefined at updateBrowserRemoteness@chrome://browser/content/tabbrowser.js:1834:7
[task 2020-05-14T23:05:51.788Z] 23:05:51     INFO - GECKO(2260) | onBackgroundBrowserCrash@resource:///modules/ContentCrashHandlers.jsm:274:14
[task 2020-05-14T23:05:51.788Z] 23:05:51     INFO - GECKO(2260) | onTabCrashed@chrome://browser/content/tabbrowser.js:5505:27
[task 2020-05-14T23:05:51.790Z] 23:05:51     INFO - GECKO(2260) | _insertBrowser@chrome://browser/content/tabbrowser.js:2291:24
[task 2020-05-14T23:05:51.800Z] 23:05:51     INFO - GECKO(2260) | addTab@chrome://browser/content/tabbrowser.js:2751:16
[task 2020-05-14T23:05:51.800Z] 23:05:51     INFO - GECKO(2260) | Tester_waitForWindowsState@chrome://mochikit/content/browser-test.js:407:16
[task 2020-05-14T23:05:51.800Z] 23:05:51     INFO - GECKO(2260) | nextTest@chrome://mochikit/content/browser-test.js:806:10
[task 2020-05-14T23:05:51.800Z] 23:05:51     INFO - GECKO(2260) | JavaScript error: chrome://browser/content/tabbrowser.js, line 1834: TypeError: aBrowser.webProgress is undefined
[task 2020-05-14T23:05:51.845Z] 23:05:51     INFO - checking window state
[task 2020-05-14T23:05:51.877Z] 23:05:51     INFO - Console message: [JavaScript Error: "remote browser crashed while on <unknown>
[task 2020-05-14T23:05:51.877Z] 23:05:51     INFO - " {file: "chrome://mochikit/content/mochitest-e10s-utils.js" line: 10}]
[task 2020-05-14T23:05:51.877Z] 23:05:51     INFO - e10s_init/<@chrome://mochikit/content/mochitest-e10s-utils.js:10:10
[task 2020-05-14T23:05:51.877Z] 23:05:51     INFO - _insertBrowser@chrome://browser/content/tabbrowser.js:2291:24
[task 2020-05-14T23:05:51.877Z] 23:05:51     INFO - addTab@chrome://browser/content/tabbrowser.js:2751:16
[task 2020-05-14T23:05:51.877Z] 23:05:51     INFO - Tester_waitForWindowsState@chrome://mochikit/content/browser-test.js:407:16
[task 2020-05-14T23:05:51.877Z] 23:05:51     INFO - nextTest@chrome://mochikit/content/browser-test.js:806:10
[task 2020-05-14T23:05:51.877Z] 23:05:51     INFO - 
[task 2020-05-14T23:05:51.877Z] 23:05:51     INFO - Console message: [JavaScript Error: "TypeError: aBrowser.webProgress is undefined" {file: "chrome://browser/content/tabbrowser.js" line: 1834}]
[task 2020-05-14T23:05:51.877Z] 23:05:51     INFO - updateBrowserRemoteness@chrome://browser/content/tabbrowser.js:1834:7
[task 2020-05-14T23:05:51.877Z] 23:05:51     INFO - onBackgroundBrowserCrash@resource:///modules/ContentCrashHandlers.jsm:274:14
[task 2020-05-14T23:05:51.878Z] 23:05:51     INFO - onTabCrashed@chrome://browser/content/tabbrowser.js:5505:27
[task 2020-05-14T23:05:51.878Z] 23:05:51     INFO - _insertBrowser@chrome://browser/content/tabbrowser.js:2291:24
[task 2020-05-14T23:05:51.878Z] 23:05:51     INFO - addTab@chrome://browser/content/tabbrowser.js:2751:16
[task 2020-05-14T23:05:51.878Z] 23:05:51     INFO - Tester_waitForWindowsState@chrome://mochikit/content/browser-test.js:407:16
[task 2020-05-14T23:05:51.878Z] 23:05:51     INFO - nextTest@chrome://mochikit/content/browser-test.js:806:10
[task 2020-05-14T23:05:51.878Z] 23:05:51     INFO -