Bug: Intermittent browser/components/sessionstore/test/browser_async_remove_tab.js | Uncaught exception - AbortError: Actor 'SpecialPowers' destroyed before query 'Spawn' was resolved | Found an unexpected tab at the end of test run: https://example.com
Status: RESOLVED
Priority: P5
Resolution: FIXED
Created: 2020-11-16 17:28:02+00:00
Resolved: 2021-09-20 06:31:03+00:00

**Filed by:** rmaries [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=321920567&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/dh6f-xq3TsOX0iJXoO1Qqg/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2020-11-16T16:59:58.124Z] 16:59:58     INFO - TEST-START | browser/components/sessionstore/test/browser_async_remove_tab.js
[task 2020-11-16T16:59:59.732Z] 16:59:59     INFO - TEST-PASS | browser/components/sessionstore/test/browser_async_remove_tab.js | browser is remote - 
[task 2020-11-16T16:59:59.732Z] 16:59:59     INFO - Buffered messages finished
[task 2020-11-16T16:59:59.732Z] 16:59:59     INFO - TEST-UNEXPECTED-FAIL | browser/components/sessionstore/test/browser_async_remove_tab.js | Uncaught exception - AbortError: Actor 'SpecialPowers' destroyed before query 'Spawn' was resolved
[task 2020-11-16T16:59:59.735Z] 16:59:59     INFO - Leaving test bound save_worthy_tabs_remote_final
[task 2020-11-16T16:59:59.736Z] 16:59:59     INFO - Entering test bound save_worthy_tabs_nonremote_final
[task 2020-11-16T16:59:59.737Z] 16:59:59     INFO - TEST-PASS | browser/components/sessionstore/test/browser_async_remove_tab.js | browser is remote - 
[task 2020-11-16T16:59:59.739Z] 16:59:59     INFO - TEST-PASS | browser/components/sessionstore/test/browser_async_remove_tab.js | browser is not remote anymore - 
[task 2020-11-16T16:59:59.739Z] 16:59:59     INFO - TEST-PASS | browser/components/sessionstore/test/browser_async_remove_tab.js | closed tab not saved - 
[task 2020-11-16T16:59:59.741Z] 16:59:59     INFO - TEST-PASS | browser/components/sessionstore/test/browser_async_remove_tab.js | closed tab saved - 
[task 2020-11-16T16:59:59.742Z] 16:59:59     INFO - Leaving test bound save_worthy_tabs_nonremote_final
[task 2020-11-16T16:59:59.742Z] 16:59:59     INFO - Entering test bound dont_save_empty_tabs_final
[task 2020-11-16T17:00:00.201Z] 17:00:00     INFO - TEST-PASS | browser/components/sessionstore/test/browser_async_remove_tab.js | browser is remote - 
[task 2020-11-16T17:00:00.242Z] 17:00:00     INFO - TEST-PASS | browser/components/sessionstore/test/browser_async_remove_tab.js | closed tab saved - 
[task 2020-11-16T17:00:00.258Z] 17:00:00     INFO - TEST-PASS | browser/components/sessionstore/test/browser_async_remove_tab.js | closed tab not saved - 
[task 2020-11-16T17:00:00.258Z] 17:00:00     INFO - Leaving test bound dont_save_empty_tabs_final
[task 2020-11-16T17:00:00.259Z] 17:00:00     INFO - Entering test bound undo_worthy_tabs
[task 2020-11-16T17:00:00.708Z] 17:00:00     INFO - TEST-PASS | browser/components/sessionstore/test/browser_async_remove_tab.js | browser is remote - 
[task 2020-11-16T17:00:00.716Z] 17:00:00     INFO - TEST-PASS | browser/components/sessionstore/test/browser_async_remove_tab.js | closed tab saved - 
[task 2020-11-16T17:00:00.813Z] 17:00:00     INFO - TEST-PASS | browser/components/sessionstore/test/browser_async_remove_tab.js | tab no longer closed - 
[task 2020-11-16T17:00:00.890Z] 17:00:00     INFO - Leaving test bound undo_worthy_tabs
[task 2020-11-16T17:00:00.890Z] 17:00:00     INFO - Entering test bound forget_worthy_tabs_remote
[task 2020-11-16T17:00:01.410Z] 17:00:01     INFO - TEST-PASS | browser/components/sessionstore/test/browser_async_remove_tab.js | browser is remote - 
[task 2020-11-16T17:00:01.427Z] 17:00:01     INFO - TEST-PASS | browser/components/sessionstore/test/browser_async_remove_tab.js | closed tab saved - 
[task 2020-11-16T17:00:01.428Z] 17:00:01     INFO - TEST-PASS | browser/components/sessionstore/test/browser_async_remove_tab.js | we forgot about the tab - 
[task 2020-11-16T17:00:01.428Z] 17:00:01     INFO - Leaving test bound forget_worthy_tabs_remote
[task 2020-11-16T17:00:01.485Z] 17:00:01     INFO - GECKO(3293) | MEMORY STAT | vsize 20975518MB | residentFast 1505MB
[task 2020-11-16T17:00:01.485Z] 17:00:01     INFO - TEST-OK | browser/components/sessionstore/test/browser_async_remove_tab.js | took 3354ms
[task 2020-11-16T17:00:01.488Z] 17:00:01     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-11-16T17:00:01.490Z] 17:00:01     INFO - TEST-UNEXPECTED-FAIL | browser/components/sessionstore/test/browser_async_remove_tab.js | Found an unexpected tab at the end of test run: https://example.com/ - 
[task 2020-11-16T17:00:01.553Z] 17:00:01     INFO - checking window state```