Bug: Perma TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_file_to_http_named_popup.js | Uncaught exception - TimeoutError: Message handler threw uncatchable exception when Gecko 93 merges to Beta on 2021-09-06
Status: RESOLVED
Priority: --
Resolution: FIXED
Created: 2021-09-03 16:11:10+00:00
Resolved: 2021-09-05 15:59:52+00:00

[Tracking Requested - why for this release]:

[Central-as-beta simulation:]( https://treeherder.mozilla.org/jobs?repo=try&group_state=expanded&resultStatus=testfailed%2Cbusted%2Cexception%2Cretry%2Cusercancel%2Crunnable&revision=27f0b323e184bba97d1c3778a78762b33eb9d3cb&selectedTaskRun=fFD3hih7RYm-igX2xHfObg.0) 
[How to run these simulations:](https://wiki.mozilla.org/Sheriffing/How_To/Beta_simulations#TRUNK_AS_EARLY_BETA)

[Failure log:](https://treeherder.mozilla.org/logviewer?job_id=350445634&repo=try&lineNumber=3072)

```
[task 2021-09-03T13:03:06.678Z] 13:03:06     INFO - TEST-START | browser/base/content/test/tabs/browser_file_to_http_named_popup.js
[task 2021-09-03T13:03:08.142Z] 13:03:08     INFO - TEST-INFO | started process screentopng
[task 2021-09-03T13:03:08.711Z] 13:03:08     INFO - TEST-INFO | screentopng: exit 0
[task 2021-09-03T13:03:08.711Z] 13:03:08     INFO - Buffered messages logged at 13:03:06
[task 2021-09-03T13:03:08.711Z] 13:03:08     INFO - Entering test bound 
[task 2021-09-03T13:03:08.712Z] 13:03:08     INFO - Buffered messages logged at 13:03:07
[task 2021-09-03T13:03:08.712Z] 13:03:08     INFO - Tab ready
[task 2021-09-03T13:03:08.714Z] 13:03:08     INFO - Opening window
[task 2021-09-03T13:03:08.715Z] 13:03:08     INFO - Buffered messages finished
[task 2021-09-03T13:03:08.716Z] 13:03:08     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_file_to_http_named_popup.js | Uncaught exception - TimeoutError: Message handler threw uncatchable exception
[task 2021-09-03T13:03:08.717Z] 13:03:08     INFO - Leaving test bound 
[task 2021-09-03T13:03:08.717Z] 13:03:08     INFO - GECKO(1912) | MEMORY STAT | vsize 20975951MB | residentFast 1393MB
[task 2021-09-03T13:03:08.720Z] 13:03:08     INFO - TEST-OK | browser/base/content/test/tabs/browser_file_to_http_named_popup.js | took 1530ms
[task 2021-09-03T13:03:08.720Z] 13:03:08     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-09-03T13:03:08.720Z] 13:03:08     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_file_to_http_named_popup.js | Found an unexpected tab at the end of test run: file:///builds/worker/workspace/build/tests/mochitest/browser/browser/base/content/test/tabs/dummy_page.html - 
[task 2021-09-03T13:03:08.720Z] 13:03:08     INFO - checking window state
[task 2021-09-03T13:03:08.721Z] 13:03:08     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-09-03T13:03:08.722Z] 13:03:08     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_file_to_http_named_popup.js | Found an unexpected browser window at the end of test run - 
[task 2021-09-03T13:03:08.722Z] 13:03:08     INFO - GECKO(1912) | must wait for focus
[task 2021-09-03T13:03:08.723Z] 13:03:08     INFO - TEST-START | browser/base/content/test/tabs/browser_file_to_http_script_closable.js
```