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: 2020-05-30 12:56:16+00:00
Resolved: 2020-06-01 06:47:51+00:00

**Filed by:** apavel [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer.html#?job_id=304389916&repo=try
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/J9ZGqGx-TxWyfqfvwOXGKA/runs/0/artifacts/public/logs/live_backing.log

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[task 2020-05-30T12:06:41.048Z] 12:06:41     INFO - TEST-START | browser/base/content/test/tabs/browser_undo_close_tabs.js
[task 2020-05-30T12:06:49.457Z] 12:06:49     INFO - TEST-INFO | started process screencapture
[task 2020-05-30T12:06:49.667Z] 12:06:49     INFO - TEST-INFO | screencapture: exit 0
[task 2020-05-30T12:06:49.667Z] 12:06:49     INFO - Buffered messages logged at 12:06:41
[task 2020-05-30T12:06:49.667Z] 12:06:49     INFO - Entering test bound setPref
[task 2020-05-30T12:06:49.667Z] 12:06:49     INFO - Leaving test bound setPref
[task 2020-05-30T12:06:49.667Z] 12:06:49     INFO - Entering test bound withMultiSelectedTabs
[task 2020-05-30T12:06:49.667Z] 12:06:49     INFO - TEST-PASS | browser/base/content/test/tabs/browser_undo_close_tabs.js | Zero multiselected tabs - 
[task 2020-05-30T12:06:49.667Z] 12:06:49     INFO - TEST-PASS | browser/base/content/test/tabs/browser_undo_close_tabs.js | InitialTab is not multiselected - 
[task 2020-05-30T12:06:49.667Z] 12:06:49     INFO - TEST-PASS | browser/base/content/test/tabs/browser_undo_close_tabs.js | Tab1 is not multiselected - 
[task 2020-05-30T12:06:49.667Z] 12:06:49     INFO - TEST-PASS | browser/base/content/test/tabs/browser_undo_close_tabs.js | Tab2 is multiselected - 
[task 2020-05-30T12:06:49.668Z] 12:06:49     INFO - TEST-PASS | browser/base/content/test/tabs/browser_undo_close_tabs.js | Tab3 is multiselected - 
[task 2020-05-30T12:06:49.668Z] 12:06:49     INFO - TEST-PASS | browser/base/content/test/tabs/browser_undo_close_tabs.js | Tab4 is multiselected - 
[task 2020-05-30T12:06:49.668Z] 12:06:49     INFO - TEST-PASS | browser/base/content/test/tabs/browser_undo_close_tabs.js | Two multiselected tabs - 
[task 2020-05-30T12:06:49.668Z] 12:06:49     INFO - TEST-PASS | browser/base/content/test/tabs/browser_undo_close_tabs.js | SessionStore should know how many tabs were just closed - 
[task 2020-05-30T12:06:49.668Z] 12:06:49     INFO - waiting for the browsers to finish loading
[task 2020-05-30T12:06:49.668Z] 12:06:49     INFO - Buffered messages finished
[task 2020-05-30T12:06:49.668Z] 12:06:49     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 2020-05-30T12:06:49.668Z] 12:06:49     INFO - Leaving test bound withMultiSelectedTabs
[task 2020-05-30T12:06:49.668Z] 12:06:49     INFO - Entering test bound withCloseTabsToTheRight
[task 2020-05-30T12:06:57.544Z] 12:06:57     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-05-30T12:06:57.544Z] 12:06:57     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 2020-05-30T12:06:57.544Z] 12:06:57     INFO - Leaving test bound withCloseTabsToTheRight
[task 2020-05-30T12:06:57.550Z] 12:06:57     INFO - GECKO(1970) | MEMORY STAT | vsize 7706MB | residentFast 373MB | heapAllocated 136MB
[task 2020-05-30T12:06:57.550Z] 12:06:57     INFO - TEST-OK | browser/base/content/test/tabs/browser_undo_close_tabs.js | took 16527ms
[task 2020-05-30T12:06:57.550Z] 12:06:57     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-05-30T12:06:57.550Z] 12:06:57     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 2020-05-30T12:06:57.552Z] 12:06:57     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-05-30T12:06:57.552Z] 12:06:57     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 2020-05-30T12:06:57.570Z] 12:06:57     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-05-30T12:06:57.570Z] 12:06:57     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 2020-05-30T12:06:57.571Z] 12:06:57     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-05-30T12:06:57.571Z] 12:06:57     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 - 
[task 2020-05-30T12:06:57.571Z] 12:06:57     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-05-30T12:06:57.571Z] 12:06:57     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-click - 
[task 2020-05-30T12:06:57.600Z] 12:06:57     INFO - checking window state