Bug: Intermittent browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Test timed out | Uncaught exception received from previously timed out test - sync-pane-loaded observer not removed before the end of test
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2021-08-11 12:44:37+00:00
Resolved: 2021-09-07 17:05:40+00:00

**Filed by:** mlaza [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=348073266&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/GN1oyqCATgeeOc-Q21x-7Q/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2021-08-11T11:19:03.461Z] 11:19:03     INFO - TEST-START | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js
[task 2021-08-11T11:19:04.744Z] 11:19:04     INFO - GECKO(2452) | JavaScript error: , line 0: uncaught exception: out of memory
[task 2021-08-11T11:19:04.758Z] 11:19:04     INFO - GECKO(2452) | JavaScript error: chrome://global/content/elements/checkbox.js, line 63: uncaught exception: out of memory
[task 2021-08-11T11:19:04.758Z] 11:19:04     INFO - GECKO(2452) | JavaScript error: chrome://global/content/elements/checkbox.js, line 63: uncaught exception: out of memory
[task 2021-08-11T11:19:04.759Z] 11:19:04     INFO - GECKO(2452) | JavaScript error: chrome://global/content/elements/checkbox.js, line 63: uncaught exception: out of memory
[task 2021-08-11T11:19:04.760Z] 11:19:04     INFO - GECKO(2452) | JavaScript error: chrome://global/content/elements/checkbox.js, line 63: uncaught exception: out of memory
[task 2021-08-11T11:19:04.760Z] 11:19:04     INFO - GECKO(2452) | JavaScript error: chrome://global/content/elements/checkbox.js, line 63: uncaught exception: out of memory
[task 2021-08-11T11:19:04.761Z] 11:19:04     INFO - GECKO(2452) | JavaScript error: chrome://global/content/elements/checkbox.js, line 63: uncaught exception: out of memory
[task 2021-08-11T11:19:04.767Z] 11:19:04     INFO - GECKO(2452) | JavaScript error: chrome://browser/content/preferences/preferences.js, line 98: uncaught exception: out of memory
[task 2021-08-11T11:19:04.767Z] 11:19:04     INFO - GECKO(2452) | JavaScript error: chrome://browser/content/preferences/preferences.js, line 98: uncaught exception: out of memory
[task 2021-08-11T11:19:04.768Z] 11:19:04     INFO - GECKO(2452) | JavaScript error: chrome://browser/content/preferences/preferences.js, line 98: uncaught exception: out of memory
[task 2021-08-11T11:19:04.769Z] 11:19:04     INFO - GECKO(2452) | JavaScript error: chrome://browser/content/preferences/preferences.js, line 98: uncaught exception: out of memory
[task 2021-08-11T11:19:04.769Z] 11:19:04     INFO - GECKO(2452) | JavaScript error: chrome://browser/content/preferences/preferences.js, line 98: uncaught exception: out of memory
[task 2021-08-11T11:19:04.770Z] 11:19:04     INFO - GECKO(2452) | JavaScript error: chrome://browser/content/preferences/preferences.js, line 98: uncaught exception: out of memory
[task 2021-08-11T11:19:04.780Z] 11:19:04     INFO - GECKO(2452) | JavaScript error: , line 0: uncaught exception: out of memory
[task 2021-08-11T11:20:33.478Z] 11:20:33     INFO - TEST-INFO | started process screenshot
[task 2021-08-11T11:20:33.553Z] 11:20:33     INFO - TEST-INFO | screenshot: exit 0
[task 2021-08-11T11:20:33.555Z] 11:20:33     INFO - <snipped 20 output lines - if you need more context, please use SimpleTest.requestCompleteLog() in your test>
[task 2021-08-11T11:20:33.556Z] 11:20:33     INFO - Buffered messages logged at 11:19:04
[task 2021-08-11T11:20:33.556Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | filesAndApplicationsCategory should not be in search results - 
[task 2021-08-11T11:20:33.557Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.558Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | downloadsGroup should not be in search results - 
[task 2021-08-11T11:20:33.558Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.559Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | applicationsGroup should not be in search results - 
[task 2021-08-11T11:20:33.560Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.561Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | drmGroup should not be in search results - 
[task 2021-08-11T11:20:33.561Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.562Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | updatesCategory should not be in search results - 
[task 2021-08-11T11:20:33.563Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.563Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | updateApp should not be in search results - 
[task 2021-08-11T11:20:33.564Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.565Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | performanceCategory should not be in search results - 
[task 2021-08-11T11:20:33.566Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.567Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | performanceGroup should not be in search results - 
[task 2021-08-11T11:20:33.567Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.568Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | browsingCategory should not be in search results - 
[task 2021-08-11T11:20:33.569Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.570Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | browsingGroup should not be in search results - 
[task 2021-08-11T11:20:33.570Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.571Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | networkProxyCategory should not be in search results - 
[task 2021-08-11T11:20:33.572Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.573Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | connectionGroup should not be in search results - 
[task 2021-08-11T11:20:33.573Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.574Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | firefoxHomeCategory should not be in search results - 
[task 2021-08-11T11:20:33.575Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.576Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | homepageGroup should not be in search results - 
[task 2021-08-11T11:20:33.577Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.577Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | homeContentsGroup should not be in search results - 
[task 2021-08-11T11:20:33.578Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.579Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | searchCategory should not be in search results - 
[task 2021-08-11T11:20:33.580Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.580Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | searchbarGroup should not be in search results - 
[task 2021-08-11T11:20:33.581Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.582Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | defaultEngineGroup should not be in search results - 
[task 2021-08-11T11:20:33.583Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.584Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | searchSuggestionsGroup should not be in search results - 
[task 2021-08-11T11:20:33.584Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.585Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | oneClickSearchProvidersGroup should not be in search results - 
[task 2021-08-11T11:20:33.586Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.587Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | signonBundle should not be in search results - 
[task 2021-08-11T11:20:33.588Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.588Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | browserPrivacyCategory should not be in search results - 
[task 2021-08-11T11:20:33.589Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.590Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | trackingGroup should not be in search results - 
[task 2021-08-11T11:20:33.591Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.592Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | siteDataGroup should not be in search results - 
[task 2021-08-11T11:20:33.593Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.594Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | passwordsGroup should not be in search results - 
[task 2021-08-11T11:20:33.595Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.595Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | formAutofillGroupBox should not be in search results - 
[task 2021-08-11T11:20:33.597Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.597Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | historyGroup should not be in search results - 
[task 2021-08-11T11:20:33.598Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.599Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | locationBarGroup should not be in search results - 
[task 2021-08-11T11:20:33.600Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.600Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | permissionsCategory should not be in search results - 
[task 2021-08-11T11:20:33.601Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.602Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | permissionsGroup should not be in search results - 
[task 2021-08-11T11:20:33.603Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.604Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | dataCollectionCategory should not be in search results - 
[task 2021-08-11T11:20:33.605Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.606Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | dataCollectionGroup should not be in search results - 
[task 2021-08-11T11:20:33.607Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.607Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | securityCategory should not be in search results - 
[task 2021-08-11T11:20:33.608Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.609Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | browsingProtectionGroup should not be in search results - 
[task 2021-08-11T11:20:33.610Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.611Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | certSelection should be in search results - 
[task 2021-08-11T11:20:33.612Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.613Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | httpsOnlyBox should not be in search results - 
[task 2021-08-11T11:20:33.614Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.615Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | header-containers should not be in search results - 
[task 2021-08-11T11:20:33.617Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.617Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | browserContainersGroupPane should not be in search results - 
[task 2021-08-11T11:20:33.618Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.619Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | firefoxAccountCategory should not be in search results - 
[task 2021-08-11T11:20:33.620Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.621Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | weavePrefsDeck should not be in search results - 
[task 2021-08-11T11:20:33.622Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.622Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | firefoxExperimentalCategory should not be in search results - 
[task 2021-08-11T11:20:33.624Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Element should not be null, when checking visibility - 
[task 2021-08-11T11:20:33.624Z] 11:20:33     INFO - TEST-PASS | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | template-featureGate should not be in search results - 
[task 2021-08-11T11:20:33.625Z] 11:20:33     INFO - Leaving test bound 
[task 2021-08-11T11:20:33.626Z] 11:20:33     INFO - Entering test bound 
[task 2021-08-11T11:20:33.626Z] 11:20:33     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory"]
[task 2021-08-11T11:20:33.627Z] 11:20:33     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory" {file: "chrome://global/content/elements/checkbox.js" line: 63}]
[task 2021-08-11T11:20:33.628Z] 11:20:33     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory" {file: "chrome://global/content/elements/checkbox.js" line: 63}]
[task 2021-08-11T11:20:33.629Z] 11:20:33     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory" {file: "chrome://global/content/elements/checkbox.js" line: 63}]
[task 2021-08-11T11:20:33.630Z] 11:20:33     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory" {file: "chrome://global/content/elements/checkbox.js" line: 63}]
[task 2021-08-11T11:20:33.631Z] 11:20:33     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory" {file: "chrome://global/content/elements/checkbox.js" line: 63}]
[task 2021-08-11T11:20:33.631Z] 11:20:33     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory" {file: "chrome://global/content/elements/checkbox.js" line: 63}]
[task 2021-08-11T11:20:33.632Z] 11:20:33     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory" {file: "chrome://browser/content/preferences/preferences.js" line: 98}]
[task 2021-08-11T11:20:33.633Z] 11:20:33     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory" {file: "chrome://browser/content/preferences/preferences.js" line: 98}]
[task 2021-08-11T11:20:33.634Z] 11:20:33     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory" {file: "chrome://browser/content/preferences/preferences.js" line: 98}]
[task 2021-08-11T11:20:33.635Z] 11:20:33     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory" {file: "chrome://browser/content/preferences/preferences.js" line: 98}]
[task 2021-08-11T11:20:33.635Z] 11:20:33     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory" {file: "chrome://browser/content/preferences/preferences.js" line: 98}]
[task 2021-08-11T11:20:33.636Z] 11:20:33     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory" {file: "chrome://browser/content/preferences/preferences.js" line: 98}]
[task 2021-08-11T11:20:33.637Z] 11:20:33     INFO - Console message: [JavaScript Error: "uncaught exception: out of memory"]
[task 2021-08-11T11:20:33.638Z] 11:20:33     INFO - Buffered messages logged at 11:19:48
[task 2021-08-11T11:20:33.638Z] 11:20:33     INFO - Longer timeout required, waiting longer...  Remaining timeouts: 1
[task 2021-08-11T11:20:33.639Z] 11:20:33     INFO - Buffered messages finished
[task 2021-08-11T11:20:33.639Z] 11:20:33     INFO - TEST-UNEXPECTED-FAIL | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Test timed out - 
[task 2021-08-11T11:20:33.640Z] 11:20:33     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-08-11T11:20:33.641Z] 11:20:33     INFO - TEST-UNEXPECTED-FAIL | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Uncaught exception received from previously timed out test - sync-pane-loaded observer not removed before the end of test
[task 2021-08-11T11:20:33.641Z] 11:20:33     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-08-11T11:20:33.643Z] 11:20:33     INFO - TEST-UNEXPECTED-FAIL | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | A promise chain failed to handle a rejection: out of memory - stack: (No stack available.)
[task 2021-08-11T11:20:33.643Z] 11:20:33     INFO - Rejection date: Wed Aug 11 2021 11:19:04 GMT+0000 (Coordinated Universal Time) - false == true - JS frame :: resource://testing-common/PromiseTestUtils.jsm :: assertNoUncaughtRejections :: line 285
[task 2021-08-11T11:20:33.643Z] 11:20:33     INFO - Stack trace:
[task 2021-08-11T11:20:33.643Z] 11:20:33     INFO - resource://testing-common/PromiseTestUtils.jsm:assertNoUncaughtRejections:285
[task 2021-08-11T11:20:33.643Z] 11:20:33     INFO - chrome://mochikit/content/browser-test.js:nextTest:625
[task 2021-08-11T11:20:33.644Z] 11:20:33     INFO - chrome://mochikit/content/browser-test.js:timeoutFn:1231
[task 2021-08-11T11:20:33.644Z] 11:20:33     INFO - GECKO(2452) | MEMORY STAT | vsize 1818MB | vsizeMaxContiguous 9MB | residentFast 801MB | heapAllocated 598MB
[task 2021-08-11T11:20:33.645Z] 11:20:33     INFO - TEST-OK | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | took 90043ms
[task 2021-08-11T11:20:33.645Z] 11:20:33     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-08-11T11:20:33.646Z] 11:20:33     INFO - TEST-UNEXPECTED-FAIL | browser/components/preferences/tests/browser_search_subdialogs_within_preferences_7.js | Found a tab after previous test timed out: about:preferences#general - 
[task 2021-08-11T11:20:33.647Z] 11:20:33     INFO - checking window state
```