Bug: Intermittent tests/browser/browser_policy_websitefilter.js | Uncaught exception - Page file:///this_should_be_blocked block was correct (expected=true). - threw exception: AbortError: Actor 'SpecialPowers' destroyed before query 'Spawn' was resolved
Status: RESOLVED
Priority: P5
Resolution: FIXED
Created: 2020-10-01 06:28:23+00:00
Resolved: 2020-11-23 06:11:05+00:00

**Filed by:** btara [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer.html#?job_id=317226856&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/VZWyheH5TVaJZEMA2OZ_Bg/runs/0/artifacts/public/logs/live_backing.log

---
```
```
[task 2020-10-01T00:38:14.738Z] 00:38:14     INFO - TEST-START | browser/components/enterprisepolicies/tests/browser/browser_policy_websitefilter.js
[task 2020-10-01T00:38:14.794Z] 00:38:14     INFO - GECKO(2660) | [Child 2855: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7f99358af000 == 2 [pid = 2855] [id = 39]
[task 2020-10-01T00:38:14.795Z] 00:38:14     INFO - GECKO(2660) | [Child 2855: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 5 (0x7f9952d93520) [pid = 2855] [serial = 100] [outer = (nil)]
[task 2020-10-01T00:38:14.795Z] 00:38:14     INFO - GECKO(2660) | [Child 2855: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 6 (0x7f99358b0000) [pid = 2855] [serial = 101] [outer = 0x7f9952d93520]
[task 2020-10-01T00:38:14.815Z] 00:38:14     INFO - GECKO(2660) | [Parent 2660, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80780003 (NS_ERROR_BLOCKED_BY_POLICY): file /builds/worker/checkouts/gecko/dom/security/nsContentSecurityManager.cpp, line 1073
[task 2020-10-01T00:38:14.815Z] 00:38:14     INFO - GECKO(2660) | [Parent 2660, Main Thread] WARNING: 'NS_FAILED(rv)', file /builds/worker/checkouts/gecko/netwerk/protocol/http/nsHttpChannel.cpp, line 6653
[task 2020-10-01T00:38:14.851Z] 00:38:14     INFO - GECKO(2660) | Waiting for browser load
[task 2020-10-01T00:38:14.851Z] 00:38:14     INFO - GECKO(2660) | Waiting for browser state change
[task 2020-10-01T00:38:14.871Z] 00:38:14     INFO - GECKO(2660) | Saw state f0001 and status 0
[task 2020-10-01T00:38:14.871Z] 00:38:14     INFO - GECKO(2660) | [Parent 2660, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80780003 (NS_ERROR_BLOCKED_BY_POLICY): file /builds/worker/checkouts/gecko/dom/security/nsContentSecurityManager.cpp, line 1073
[task 2020-10-01T00:38:14.871Z] 00:38:14     INFO - GECKO(2660) | [Parent 2660, Main Thread] WARNING: 'NS_FAILED(rv)', file /builds/worker/checkouts/gecko/netwerk/protocol/http/nsHttpChannel.cpp, line 6653
[task 2020-10-01T00:38:14.927Z] 00:38:14     INFO - GECKO(2660) | Saw state c0010 and status 80780003
[task 2020-10-01T00:38:14.927Z] 00:38:14     INFO - GECKO(2660) | Browser got expected state change http://mochi.test:8888/browser/browser/components/enterprisepolicies/tests/browser/policy_websitefilter_block.html
[task 2020-10-01T00:38:14.935Z] 00:38:14     INFO - GECKO(2660) | [Child 2855: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 7 (0x7f99358b8800) [pid = 2855] [serial = 102] [outer = 0x7f9952d93520]
[task 2020-10-01T00:38:15.036Z] 00:38:15     INFO - GECKO(2660) | [Child 2855, Main Thread] WARNING: '!tsi', file /builds/worker/checkouts/gecko/dom/base/Document.cpp, line 1595
[task 2020-10-01T00:38:15.273Z] 00:38:15     INFO - GECKO(2660) | [Child 3034: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7fe43634ec00 == 1 [pid = 3034] [id = 1]
[task 2020-10-01T00:38:15.273Z] 00:38:15     INFO - GECKO(2660) | [Child 3034: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 1 (0x7fe452a93180) [pid = 3034] [serial = 4] [outer = (nil)]
[task 2020-10-01T00:38:15.273Z] 00:38:15     INFO - GECKO(2660) | [Child 3034: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 2 (0x7fe436350800) [pid = 3034] [serial = 5] [outer = 0x7fe452a93180]
[task 2020-10-01T00:38:15.294Z] 00:38:15     INFO - GECKO(2660) | Waiting for browser load
[task 2020-10-01T00:38:15.294Z] 00:38:15     INFO - GECKO(2660) | Waiting for browser state change
[task 2020-10-01T00:38:15.437Z] 00:38:15     INFO - GECKO(2660) | Saw state f0001 and status 0
[task 2020-10-01T00:38:15.517Z] 00:38:15     INFO - GECKO(2660) | [Child 3034, Main Thread] WARNING: NS_ENSURE_TRUE(info) failed: file /builds/worker/checkouts/gecko/extensions/permissions/PermissionDelegateHandler.cpp, line 348
[task 2020-10-01T00:38:15.525Z] 00:38:15     INFO - GECKO(2660) | [Child 3034: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 3 (0x7fe4363b2000) [pid = 3034] [serial = 6] [outer = 0x7fe452a93180]
[task 2020-10-01T00:38:15.621Z] 00:38:15     INFO - GECKO(2660) | Saw state c0010 and status 0
[task 2020-10-01T00:38:15.621Z] 00:38:15     INFO - GECKO(2660) | Browser got expected state change http://mochi.test:8888/browser/browser/components/enterprisepolicies/tests/browser/policy_websitefilter_exception.html
[task 2020-10-01T00:38:15.984Z] 00:38:15     INFO - GECKO(2660) | console.log: "_cleanup from onBeforeAddons"
[task 2020-10-01T00:38:15.987Z] 00:38:15     INFO - GECKO(2660) | [Child 2855: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7f99358ad000 == 1 [pid = 2855] [id = 38] [url = about:blank]
[task 2020-10-01T00:38:16.028Z] 00:38:16     INFO - GECKO(2660) | [Child 2855: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 6 (0x7f9952d938c0) [pid = 2855] [serial = 96] [outer = (nil)] [url = about:blank]
[task 2020-10-01T00:38:16.132Z] 00:38:16     INFO - GECKO(2660) | console.log: "_cleanup from onProfileAfterChange"
[task 2020-10-01T00:38:16.209Z] 00:38:16     INFO - GECKO(2660) | console.log: "_cleanup from onBeforeUIStartup"
[task 2020-10-01T00:38:16.286Z] 00:38:16     INFO - GECKO(2660) | console.log: "_cleanup from onAllWindowsRestored"
[task 2020-10-01T00:38:16.302Z] 00:38:16     INFO - GECKO(2660) | [Child 2855: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7f99358afc00 == 2 [pid = 2855] [id = 40]
[task 2020-10-01T00:38:16.302Z] 00:38:16     INFO - GECKO(2660) | [Child 2855: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 7 (0x7f9952d938c0) [pid = 2855] [serial = 103] [outer = (nil)]
[task 2020-10-01T00:38:16.302Z] 00:38:16     INFO - GECKO(2660) | [Child 2855: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 8 (0x7f99358b2800) [pid = 2855] [serial = 104] [outer = 0x7f9952d938c0]
[task 2020-10-01T00:38:16.317Z] 00:38:16     INFO - GECKO(2660) | [Parent 2660, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80780003 (NS_ERROR_BLOCKED_BY_POLICY): file /builds/worker/checkouts/gecko/dom/security/nsContentSecurityManager.cpp, line 1073
[task 2020-10-01T00:38:16.318Z] 00:38:16     INFO - GECKO(2660) | [Parent 2660, Main Thread] WARNING: 'NS_FAILED(rv)', file /builds/worker/checkouts/gecko/netwerk/protocol/http/nsHttpChannel.cpp, line 6653
[task 2020-10-01T00:38:16.353Z] 00:38:16     INFO - GECKO(2660) | Waiting for browser load
[task 2020-10-01T00:38:16.353Z] 00:38:16     INFO - GECKO(2660) | Waiting for browser state change
[task 2020-10-01T00:38:16.395Z] 00:38:16     INFO - GECKO(2660) | Saw state f0001 and status 0
[task 2020-10-01T00:38:16.395Z] 00:38:16     INFO - GECKO(2660) | [Parent 2660, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80780003 (NS_ERROR_BLOCKED_BY_POLICY): file /builds/worker/checkouts/gecko/dom/security/nsContentSecurityManager.cpp, line 1073
[task 2020-10-01T00:38:16.395Z] 00:38:16     INFO - GECKO(2660) | [Parent 2660, Main Thread] WARNING: 'NS_FAILED(rv)', file /builds/worker/checkouts/gecko/netwerk/protocol/http/nsHttpChannel.cpp, line 6653
[task 2020-10-01T00:38:16.443Z] 00:38:16     INFO - GECKO(2660) | Saw state c0010 and status 80780003
[task 2020-10-01T00:38:16.443Z] 00:38:16     INFO - GECKO(2660) | Browser got expected state change http://mochi.test:8888/BROWSER/BROWSER/COMPONENTS/ENTERPRISEPOLICIES/TESTS/BROWSER/POLICY_WEBSITEFILTER_BLOCK.HTML
[task 2020-10-01T00:38:16.458Z] 00:38:16     INFO - GECKO(2660) | [Child 2855: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 9 (0x7f99366a0400) [pid = 2855] [serial = 105] [outer = 0x7f9952d938c0]
[task 2020-10-01T00:38:16.534Z] 00:38:16     INFO - GECKO(2660) | [Child 2855, Main Thread] WARNING: '!tsi', file /builds/worker/checkouts/gecko/dom/base/Document.cpp, line 1595
[task 2020-10-01T00:38:16.832Z] 00:38:16     INFO - GECKO(2660) | [Child 3034: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7fe436356400 == 2 [pid = 3034] [id = 2]
[task 2020-10-01T00:38:16.833Z] 00:38:16     INFO - GECKO(2660) | [Child 3034: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 4 (0x7fe452a93520) [pid = 3034] [serial = 7] [outer = (nil)]
[task 2020-10-01T00:38:16.835Z] 00:38:16     INFO - GECKO(2660) | [Child 3034: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 5 (0x7fe4363b0400) [pid = 3034] [serial = 8] [outer = 0x7fe452a93520]
[task 2020-10-01T00:38:16.871Z] 00:38:16     INFO - GECKO(2660) | Waiting for browser load
[task 2020-10-01T00:38:16.871Z] 00:38:16     INFO - GECKO(2660) | Waiting for browser state change
[task 2020-10-01T00:38:16.932Z] 00:38:16     INFO - GECKO(2660) | Saw state f0001 and status 0
[task 2020-10-01T00:38:17.028Z] 00:38:17     INFO - GECKO(2660) | [Child 3034: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 6 (0x7fe43663b800) [pid = 3034] [serial = 9] [outer = 0x7fe452a93520]
[task 2020-10-01T00:38:17.138Z] 00:38:17     INFO - GECKO(2660) | Saw state c0010 and status 0
[task 2020-10-01T00:38:17.139Z] 00:38:17     INFO - GECKO(2660) | Browser got expected state change http://mochi.test:8888/BROWSER/BROWSER/COMPONENTS/ENTERPRISEPOLICIES/TESTS/BROWSER/POLICY_WEBSITEFILTER_EXCEPTION.HTML
[task 2020-10-01T00:38:17.561Z] 00:38:17     INFO - GECKO(2660) | console.log: "_cleanup from onBeforeAddons"
[task 2020-10-01T00:38:17.818Z] 00:38:17     INFO - GECKO(2660) | console.log: "_cleanup from onProfileAfterChange"
[task 2020-10-01T00:38:18.123Z] 00:38:18     INFO - GECKO(2660) | console.log: "_cleanup from onBeforeUIStartup"
[task 2020-10-01T00:38:18.432Z] 00:38:18     INFO - GECKO(2660) | console.log: "_cleanup from onAllWindowsRestored"
[task 2020-10-01T00:38:18.510Z] 00:38:18     INFO - GECKO(2660) | Waiting for browser load
[task 2020-10-01T00:38:18.510Z] 00:38:18     INFO - GECKO(2660) | Waiting for browser state change
[task 2020-10-01T00:38:18.510Z] 00:38:18     INFO - GECKO(2660) | [3332, Unnamed thread 7f002025d5e0] WARNING: XPCOM objects created/destroyed from static ctor/dtor: file /builds/worker/checkouts/gecko/xpcom/base/nsTraceRefcnt.cpp, line 202
[task 2020-10-01T00:38:18.510Z] 00:38:18     INFO - GECKO(2660) | ### XPCOM_MEM_BLOAT_LOG defined -- logging bloat/leaks to /tmp/tmphUzopW.mozrunner/runtests_leaks.log
[task 2020-10-01T00:38:18.510Z] 00:38:18     INFO - GECKO(2660) | [3332, Unnamed thread 7f002025d5e0] WARNING: XPCOM objects created/destroyed from static ctor/dtor: file /builds/worker/checkouts/gecko/xpcom/base/nsTraceRefcnt.cpp, line 202
[task 2020-10-01T00:38:18.510Z] 00:38:18     INFO - GECKO(2660) | [3332, Main Thread] WARNING: XPCOM_MEM_BLOAT_LOG is set, disabling native allocations.: file /builds/worker/checkouts/gecko/tools/profiler/core/platform.cpp, line 246
[task 2020-10-01T00:38:18.652Z] 00:38:18     INFO - GECKO(2660) | [Child 3332, Main Thread] WARNING: could not set real-time limit in CubebUtils::InitLibrary: file /builds/worker/checkouts/gecko/dom/media/CubebUtils.cpp, line 626
[task 2020-10-01T00:38:18.809Z] 00:38:18     INFO - GECKO(2660) | [Child 3332: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7f0003b05400 == 1 [pid = 3332] [id = 0]
[task 2020-10-01T00:38:18.836Z] 00:38:18     INFO - GECKO(2660) | [Child 3332: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 1 (0x7f0020293520) [pid = 3332] [serial = 1] [outer = (nil)]
[task 2020-10-01T00:38:18.837Z] 00:38:18     INFO - GECKO(2660) | [Child 3332: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 2 (0x7f0003b4fc00) [pid = 3332] [serial = 2] [outer = 0x7f0020293520]
[task 2020-10-01T00:38:18.953Z] 00:38:18     INFO - GECKO(2660) | Saw state f0001 and status 0
[task 2020-10-01T00:38:18.954Z] 00:38:18     INFO - GECKO(2660) | [Parent 2660, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80780003 (NS_ERROR_BLOCKED_BY_POLICY): file /builds/worker/checkouts/gecko/dom/security/nsContentSecurityManager.cpp, line 1073
[task 2020-10-01T00:38:19.084Z] 00:38:19     INFO - GECKO(2660) | Saw state c0010 and status 80780003
[task 2020-10-01T00:38:19.085Z] 00:38:19     INFO - GECKO(2660) | Browser got expected state change file:///this_should_be_blocked
[task 2020-10-01T00:38:19.222Z] 00:38:19     INFO - GECKO(2660) | [Child 3332: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 3 (0x7f0003e37c00) [pid = 3332] [serial = 3] [outer = 0x7f0020293520]
[task 2020-10-01T00:38:19.278Z] 00:38:19     INFO - GECKO(2660) | [Child 3332, Main Thread] WARNING: '!CanSend() || !mManager || !mManager->CanSend()', file /builds/worker/checkouts/gecko/dom/ipc/jsactor/JSWindowActorChild.cpp, line 42
[task 2020-10-01T00:38:19.319Z] 00:38:19     INFO - GECKO(2660) | [Child 3332, Main Thread] WARNING: '!tsi', file /builds/worker/checkouts/gecko/dom/base/Document.cpp, line 1595
[task 2020-10-01T00:38:19.380Z] 00:38:19     INFO - TEST-INFO | started process screentopng
[task 2020-10-01T00:38:19.610Z] 00:38:19     INFO - TEST-INFO | screentopng: exit 0
[task 2020-10-01T00:38:19.611Z] 00:38:19     INFO - Buffered messages logged at 00:38:14
[task 2020-10-01T00:38:19.611Z] 00:38:19     INFO - Entering test bound policies_headjs_startWithCleanSlate
[task 2020-10-01T00:38:19.611Z] 00:38:19     INFO - TEST-PASS | browser/components/enterprisepolicies/tests/browser/browser_policy_websitefilter.js | Engine is inactive at the start of the test - 
[task 2020-10-01T00:38:19.612Z] 00:38:19     INFO - Leaving test bound policies_headjs_startWithCleanSlate
[task 2020-10-01T00:38:19.612Z] 00:38:19     INFO - Entering test bound test_http
[task 2020-10-01T00:38:19.612Z] 00:38:19     INFO - TEST-PASS | browser/components/enterprisepolicies/tests/browser/browser_policy_websitefilter.js | Sanity check the temporary file doesn't exist. - true == true - 
[task 2020-10-01T00:38:19.613Z] 00:38:19     INFO - Buffered messages logged at 00:38:15
[task 2020-10-01T00:38:19.613Z] 00:38:19     INFO - Leaving test bound test_http
[task 2020-10-01T00:38:19.613Z] 00:38:19     INFO - Entering test bound test_http_mixed_case
[task 2020-10-01T00:38:19.613Z] 00:38:19     INFO - TEST-PASS | browser/components/enterprisepolicies/tests/browser/browser_policy_websitefilter.js | Sanity check the temporary file doesn't exist. - true == true - 
[task 2020-10-01T00:38:19.615Z] 00:38:19     INFO - Buffered messages logged at 00:38:17
[task 2020-10-01T00:38:19.615Z] 00:38:19     INFO - Leaving test bound test_http_mixed_case
[task 2020-10-01T00:38:19.615Z] 00:38:19     INFO - Entering test bound test_file
[task 2020-10-01T00:38:19.616Z] 00:38:19     INFO - TEST-PASS | browser/components/enterprisepolicies/tests/browser/browser_policy_websitefilter.js | Sanity check the temporary file doesn't exist. - true == true - 
[task 2020-10-01T00:38:19.617Z] 00:38:19     INFO - Buffered messages finished
[task 2020-10-01T00:38:19.617Z] 00:38:19     INFO - TEST-UNEXPECTED-FAIL | browser/components/enterprisepolicies/tests/browser/browser_policy_websitefilter.js | Uncaught exception - Page file:///this_should_be_blocked block was correct (expected=true). - threw exception: AbortError: Actor 'SpecialPowers' destroyed before query 'Spawn' was resolved
[task 2020-10-01T00:38:19.618Z] 00:38:19     INFO - Leaving test bound test_file
[task 2020-10-01T00:38:19.956Z] 00:38:19     INFO - GECKO(2660) | console.log: "_cleanup from onBeforeAddons"
[task 2020-10-01T00:38:20.468Z] 00:38:20     INFO - GECKO(2660) | console.log: "_cleanup from onProfileAfterChange"
[task 2020-10-01T00:38:20.697Z] 00:38:20     INFO - GECKO(2660) | console.log: "_cleanup from onBeforeUIStartup"
[task 2020-10-01T00:38:20.697Z] 00:38:20     INFO - GECKO(2660) | console.log: "_cleanup from onAllWindowsRestored"
[task 2020-10-01T00:38:20.698Z] 00:38:20     INFO - TEST-PASS | browser/components/enterprisepolicies/tests/browser/browser_policy_websitefilter.js | Engine is inactive at the end of the test - 
[task 2020-10-01T00:38:20.719Z] 00:38:20     INFO - GECKO(2660) | MEMORY STAT | vsize 4147MB | residentFast 733MB | heapAllocated 340MB
[task 2020-10-01T00:38:20.720Z] 00:38:20     INFO - TEST-OK | browser/components/enterprisepolicies/tests/browser/browser_policy_websitefilter.js | took 5989ms
[task 2020-10-01T00:38:20.723Z] 00:38:20     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-10-01T00:38:20.724Z] 00:38:20     INFO - TEST-UNEXPECTED-FAIL | browser/components/enterprisepolicies/tests/browser/browser_policy_websitefilter.js | Found an unexpected tab at the end of test run: file:///this_should_be_blocked - 
[task 2020-10-01T00:38:20.765Z] 00:38:20     INFO - GECKO(2660) | [Child 3034: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7fe43634ec00 == 1 [pid = 3034] [id = 1] [url = http://mochi.test:8888/browser/browser/components/enterprisepolicies/tests/browser/policy_websitefilter_exception.html]
[task 2020-10-01T00:38:20.766Z] 00:38:20     INFO - GECKO(2660) | [Child 3034: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7fe436356400 == 0 [pid = 3034] [id = 2] [url = http://mochi.test:8888/BROWSER/BROWSER/COMPONENTS/ENTERPRISEPOLICIES/TESTS/BROWSER/POLICY_WEBSITEFILTER_EXCEPTION.HTML]
[task 2020-10-01T00:38:20.766Z] 00:38:20     INFO - GECKO(2660) | [Child 2855: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7f99358b3c00 == 3 [pid = 2855] [id = 41]
[task 2020-10-01T00:38:20.767Z] 00:38:20     INFO - GECKO(2660) | [Child 2855: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 10 (0x7f9952d93a90) [pid = 2855] [serial = 106] [outer = (nil)]
[task 2020-10-01T00:38:20.767Z] 00:38:20     INFO - GECKO(2660) | [Child 2855: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 11 (0x7f99358b5c00) [pid = 2855] [serial = 107] [outer = 0x7f9952d93a90]
[task 2020-10-01T00:38:20.801Z] 00:38:20     INFO - checking window state
[task 2020-10-01T00:38:20.856Z] 00:38:20     INFO - GECKO(2660) | [Parent 2660, Main Thread] WARNING: 'NS_FAILED(targetPrincipal->GetAsciiOrigin(targetOrigin))', file /builds/worker/checkouts/gecko/toolkit/components/antitracking/AntiTrackingUtils.cpp, line 347
[task 2020-10-01T00:38:20.872Z] 00:38:20     INFO - GECKO(2660) | [Parent 2660: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 117 (0x7f1302b89800) [pid = 2660] [serial = 339] [outer = 0x7f135895c350]
...
``````