Filed by: dvarga [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer.html#?job_id=285112485&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/a_b_JG2aS6CTGNBxDAXV5Q/runs/0/artifacts/public/logs/live_backing.log

[task 2020-01-15T23:42:25.329Z] 23:42:25     INFO -  1581 INFO TEST-START | dom/serviceworkers/test/test_file_upload.html
[task 2020-01-15T23:47:48.175Z] 23:47:48  WARNING -  1582 INFO TEST-UNEXPECTED-FAIL | dom/serviceworkers/test/test_file_upload.html | Test timed out.
[task 2020-01-15T23:47:48.175Z] 23:47:48     INFO -      SimpleTest.ok@SimpleTest/SimpleTest.js:277:18
[task 2020-01-15T23:47:48.175Z] 23:47:48     INFO -      reportError@SimpleTest/TestRunner.js:121:22
[task 2020-01-15T23:47:48.175Z] 23:47:48     INFO -      TestRunner._checkForHangs@SimpleTest/TestRunner.js:142:18
[task 2020-01-15T23:47:48.176Z] 23:47:48  WARNING -  1583 INFO TEST-UNEXPECTED-FAIL | dom/serviceworkers/test/test_file_upload.html | This test left a service worker registered without cleaning it up
[task 2020-01-15T23:47:48.176Z] 23:47:48     INFO -      SimpleTest.ok@SimpleTest/SimpleTest.js:277:18
[task 2020-01-15T23:47:48.177Z] 23:47:48     INFO -      afterCleanup@SimpleTest/SimpleTest.js:1219:28
[task 2020-01-15T23:47:48.177Z] 23:47:48  WARNING -  1584 INFO TEST-UNEXPECTED-FAIL | dom/serviceworkers/test/test_file_upload.html | Left over worker: http://mochi.test:8888/tests/dom/serviceworkers/test/sw_file_upload.js (scope: http://mochi.test:8888/tests/dom/serviceworkers/test/)
[task 2020-01-15T23:47:48.178Z] 23:47:48     INFO -      SimpleTest.ok@SimpleTest/SimpleTest.js:277:18
[task 2020-01-15T23:47:48.178Z] 23:47:48     INFO -      afterCleanup@SimpleTest/SimpleTest.js:1221:32
[task 2020-01-15T23:47:48.178Z] 23:47:48     INFO -  1585 INFO TEST-OK | dom/serviceworkers/test/test_file_upload.html | took 322310ms
[task 2020-01-15T23:47:48.178Z] 23:47:48     INFO -  1586 ERROR /tests/dom/serviceworkers/test/test_file_upload.html logged result after SimpleTest.finish(): This test left a service worker registered without cleaning it up
[task 2020-01-15T23:47:48.178Z] 23:47:48     INFO -  1587 ERROR /tests/dom/serviceworkers/test/test_file_upload.html logged result after SimpleTest.finish(): Left over worker: http://mochi.test:8888/tests/dom/serviceworkers/test/sw_file_upload.js (scope: http://mochi.test:8888/tests/dom/serviceworkers/test/)