Bug: Intermittent browser/base/content/test/tabs/browser_undo_close_tabs.js | Uncaught exception - waiting for tab 2 to load - timed out after 50 tries.
Status: RESOLVED
Priority: P5
Resolution: DUPLICATE
Created: 2020-06-02 05:53:00+00:00
Resolved: 2020-06-08 06:19:06+00:00

**Filed by:** ncsoregi [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer.html#?job_id=304680448&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/ehCgeV2nRAGDuUg3GrQpNQ/runs/0/artifacts/public/logs/live_backing.log

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>[task 2020-06-02T05:09:04.540Z] 05:09:04     INFO - TEST-PASS | browser/base/content/test/tabs/browser_undo_close_tabs.js | SessionStore should know how many tabs were just closed - 
[task 2020-06-02T05:09:04.540Z] 05:09:04     INFO - waiting for the browsers to finish loading
[task 2020-06-02T05:09:04.540Z] 05:09:04     INFO - Buffered messages finished
[task 2020-06-02T05:09:04.540Z] 05:09:04     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_undo_close_tabs.js | Uncaught exception - waiting for tab 2 to load - timed out after 50 tries.
[task 2020-06-02T05:09:04.540Z] 05:09:04     INFO - Leaving test bound withMultiSelectedTabs
[task 2020-06-02T05:09:04.540Z] 05:09:04     INFO - Entering test bound withCloseTabsToTheRight
[task 2020-06-02T05:09:12.506Z] 05:09:12     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-06-02T05:09:12.506Z] 05:09:12     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_undo_close_tabs.js | Uncaught exception - wait for the multiselected tabs to close - timed out after 50 tries.
[task 2020-06-02T05:09:12.506Z] 05:09:12     INFO - Leaving test bound withCloseTabsToTheRight
[task 2020-06-02T05:09:12.508Z] 05:09:12     INFO - GECKO(2225) | MEMORY STAT | vsize 7765MB | residentFast 397MB | heapAllocated 136MB
[task 2020-06-02T05:09:12.508Z] 05:09:12     INFO - TEST-OK | browser/base/content/test/tabs/browser_undo_close_tabs.js | took 16441ms
[task 2020-06-02T05:09:12.511Z] 05:09:12     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-06-02T05:09:12.511Z] 05:09:12     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_undo_close_tabs.js | Found an unexpected tab at the end of test run: https://example.com/1 - 
[task 2020-06-02T05:09:12.511Z] 05:09:12     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-06-02T05:09:12.511Z] 05:09:12     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_undo_close_tabs.js | Found an unexpected tab at the end of test run: https://example.com/3 - 
[task 2020-06-02T05:09:12.520Z] 05:09:12     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-06-02T05:09:12.520Z] 05:09:12     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_undo_close_tabs.js | Found an unexpected tab at the end of test run: https://example.com/2 - 
[task 2020-06-02T05:09:12.521Z] 05:09:12     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-06-02T05:09:12.521Z] 05:09:12     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_undo_close_tabs.js | Found an unexpected tab at the end of test run: https://example.com/1 - 
[task 2020-06-02T05:09:12.523Z] 05:09:12     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-06-02T05:09:12.523Z] 05:09:12     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_undo_close_tabs.js | Found an unexpected tab at the end of test run: chrome://mochitests/content/browser/browser/base/content/test/tabs/open_window_in_new_tab.html?open-mousedown - 
[task 2020-06-02T05:09:12.558Z] 05:09:12     INFO - checking window state