Filed by: abutkovits [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=376245295&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/a7yb1PgUQJaLxOuBr9b3mA/runs/0/artifacts/public/logs/live_backing.log

[task 2022-04-29T09:17:11.448Z] 09:17:11     INFO - TEST-START | /websockets/constructor/018.html?wpt_flags=h2
[task 2022-04-29T09:17:11.448Z] 09:17:11     INFO - Setting pref network.http.http2.websockets to false
[task 2022-04-29T09:17:11.457Z] 09:17:11     INFO - Setting pref network.http.http2.websockets to true
[task 2022-04-29T09:17:11.462Z] 09:17:11     INFO - Closing window 9705b081-4998-46be-857d-cde12b733686
[task 2022-04-29T09:17:22.353Z] 09:17:22     INFO - 
[task 2022-04-29T09:17:22.354Z] 09:17:22     INFO - TEST-UNEXPECTED-TIMEOUT | /websockets/constructor/018.html?wpt_flags=h2 | WebSockets: NULL char in url - Test timed out
[task 2022-04-29T09:17:22.354Z] 09:17:22     INFO - TEST-UNEXPECTED-TIMEOUT | /websockets/constructor/018.html?wpt_flags=h2 | expected OK
[task 2022-04-29T09:17:22.354Z] 09:17:22     INFO - TEST-INFO took 10906ms
[task 2022-04-29T09:17:22.356Z] 09:17:22     INFO - PID 4147 | 1651223842354	Marionette	INFO	Stopped listening on port 55265
[task 2022-04-29T09:17:22.727Z] 09:17:22     INFO - PID 4147 | ###!!! [Parent][PImageBridgeParent] Error: RunMessage(msgname=PImageBridge::Msg_WillClose) Channel closing: too late to send/recv, messages will be lost
[task 2022-04-29T09:17:22.765Z] 09:17:22     INFO - Browser exited with return code 0
[task 2022-04-29T09:17:22.768Z] 09:17:22     INFO - Closing logging queue
[task 2022-04-29T09:17:22.768Z] 09:17:22     INFO - queue closed
[task 2022-04-29T09:17:22.796Z] 09:17:22     INFO - Application command: /opt/worker/tasks/task_165122065362389/build/application/Firefox Nightly.app/Contents/MacOS/firefox --marionette about:blank -foreground -profile /var/folders/bt/gtytsdyx7hbbc91wqgqbkdhw000014/T/tmpsdebcufz
[task 2022-04-29T09:17:22.803Z] 09:17:22     INFO - PID 4161 | 1651223813499	Marionette	INFO	Marionette enabled
[task 2022-04-29T09:17:22.804Z] 09:17:22     INFO - PID 4161 | console.warn: SearchSettings: "get: No settings file exists, new profile?" (new NotFoundError("Could not open the file at /var/folders/bt/gtytsdyx7hbbc91wqgqbkdhw000014/T/tmpiy94sjsx/search.json.mozlz4", (void 0)))
[task 2022-04-29T09:17:22.805Z] 09:17:22     INFO - PID 4161 | 1651223815812	Marionette	INFO	Listening on port 55307
[task 2022-04-29T09:17:22.805Z] 09:17:22     INFO - Starting runner
[task 2022-04-29T09:17:23.118Z] 09:17:23     INFO - PID 4161 | 2022-04-29 09:17:23.116 firefox[4161:99040] Persistent UI failed to open file file:///Users/cltbld/Library/Saved%20Application%20State/org.mozilla.nightly.savedState/window_1.data: No such file or directory (2)
[task 2022-04-29T09:17:23.443Z] 09:17:23     INFO - TEST-START | /websockets/constructor/019.html