Bug: Intermittent browser/components/sessionstore/test/browser_590563.js | Uncaught exception - undefined - timed out after 50 tries.
Status: RESOLVED
Priority: P5
Resolution: DUPLICATE
Created: 2021-03-17 20:14:08+00:00
Resolved: 2022-07-25 23:06:12+00:00

**Filed by:** csabou [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=333537808&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/AMM1qvAuSsORJ4RXBykylQ/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/AMM1qvAuSsORJ4RXBykylQ/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

---
```
[task 2021-03-17T18:05:25.455Z] 18:05:25     INFO - TEST-PASS | browser/components/sessionstore/test/browser_590563.js | The total number of visible tabs should be 1 - 
[task 2021-03-17T18:05:25.455Z] 18:05:25     INFO - Console message: [JavaScript Error: "TypeError: event.target.closest is not a function" {file: "resource:///modules/UrlbarInput.jsm" line: 2926}]
[task 2021-03-17T18:05:25.456Z] 18:05:25     INFO - _on_mousedown@resource:///modules/UrlbarInput.jsm:2926:26
[task 2021-03-17T18:05:25.456Z] 18:05:25     INFO - handleEvent@resource:///modules/UrlbarInput.jsm:424:23
[task 2021-03-17T18:05:25.457Z] 18:05:25     INFO - synthesizeMouseAtPoint@chrome://mochikit/content/tests/SimpleTest/EventUtils.js:590:13
[task 2021-03-17T18:05:25.457Z] 18:05:25     INFO - synthesizeMouse@chrome://mochikit/content/tests/SimpleTest/EventUtils.js:508:10
[task 2021-03-17T18:05:25.458Z] 18:05:25     INFO - synthesizeMouseAtCenter@chrome://mochikit/content/tests/SimpleTest/EventUtils.js:681:10
[task 2021-03-17T18:05:25.458Z] 18:05:25     INFO - middleClickTest@chrome://mochitests/content/browser/browser/components/sessionstore/test/browser_590563.js:48:14
[task 2021-03-17T18:05:25.459Z] 18:05:25     INFO - @chrome://mochitests/content/browser/browser/components/sessionstore/test/browser_590563.js:42:9
[task 2021-03-17T18:05:25.459Z] 18:05:25     INFO - 
[task 2021-03-17T18:05:25.459Z] 18:05:25     INFO - Buffered messages finished
[task 2021-03-17T18:05:25.459Z] 18:05:25     INFO - TEST-UNEXPECTED-FAIL | browser/components/sessionstore/test/browser_590563.js | Uncaught exception - undefined - timed out after 50 tries.
[task 2021-03-17T18:05:25.459Z] 18:05:25     INFO - Leaving test bound 
[task 2021-03-17T18:05:25.471Z] 18:05:25     INFO - GECKO(3756) | MEMORY STAT vsizeMaxContiguous not supported in this build configuration.
[task 2021-03-17T18:05:25.472Z] 18:05:25     INFO - GECKO(3756) | MEMORY STAT | vsize 3235MB | residentFast 444MB | heapAllocated 189MB
[task 2021-03-17T18:05:25.473Z] 18:05:25     INFO - TEST-OK | browser/components/sessionstore/test/browser_590563.js | took 8172ms
[task 2021-03-17T18:05:25.528Z] 18:05:25     INFO - checking window state
[task 2021-03-17T18:05:25.594Z] 18:05:25     INFO - TEST-START | browser/components/sessionstore/test/browser_590563.js


[task 2021-03-17T18:05:33.381Z] 18:05:33     INFO - TEST-PASS | browser/components/sessionstore/test/browser_590563.js | The total number of visible tabs should be 1 - 
[task 2021-03-17T18:05:33.382Z] 18:05:33     INFO - must wait for focus
[task 2021-03-17T18:05:33.385Z] 18:05:33     INFO - Console message: [JavaScript Error: "TypeError: event.target.closest is not a function" {file: "resource:///modules/UrlbarInput.jsm" line: 2926}]
[task 2021-03-17T18:05:33.386Z] 18:05:33     INFO - _on_mousedown@resource:///modules/UrlbarInput.jsm:2926:26
[task 2021-03-17T18:05:33.387Z] 18:05:33     INFO - handleEvent@resource:///modules/UrlbarInput.jsm:424:23
[task 2021-03-17T18:05:33.388Z] 18:05:33     INFO - synthesizeMouseAtPoint@chrome://mochikit/content/tests/SimpleTest/EventUtils.js:590:13
[task 2021-03-17T18:05:33.388Z] 18:05:33     INFO - synthesizeMouse@chrome://mochikit/content/tests/SimpleTest/EventUtils.js:508:10
[task 2021-03-17T18:05:33.389Z] 18:05:33     INFO - synthesizeMouseAtCenter@chrome://mochikit/content/tests/SimpleTest/EventUtils.js:681:10
[task 2021-03-17T18:05:33.390Z] 18:05:33     INFO - middleClickTest@chrome://mochitests/content/browser/browser/components/sessionstore/test/browser_590563.js:48:14
[task 2021-03-17T18:05:33.390Z] 18:05:33     INFO - @chrome://mochitests/content/browser/browser/components/sessionstore/test/browser_590563.js:42:9
[task 2021-03-17T18:05:33.391Z] 18:05:33     INFO - 
[task 2021-03-17T18:05:33.391Z] 18:05:33     INFO - Buffered messages finished
[task 2021-03-17T18:05:33.391Z] 18:05:33     INFO - TEST-UNEXPECTED-FAIL | browser/components/sessionstore/test/browser_590563.js | Uncaught exception - undefined - timed out after 50 tries.
[task 2021-03-17T18:05:33.391Z] 18:05:33     INFO - Leaving test bound 
[task 2021-03-17T18:05:33.589Z] 18:05:33     INFO - GECKO(3756) | MEMORY STAT | vsize 3236MB | residentFast 444MB | heapAllocated 188MB
[task 2021-03-17T18:05:33.589Z] 18:05:33     INFO - TEST-OK | browser/components/sessionstore/test/browser_590563.js | took 7994ms```