Bug: Intermittent browser/components/newtab/test/browser/browser_customize_menu_content.js | Uncaught exception - Close button should be focused when menu becomes visible - timed out after 50 tries.
Status: RESOLVED
Priority: P5
Resolution: DUPLICATE
Created: 2021-05-07 22:00:09+00:00
Resolved: 2022-08-12 20:36:53+00:00

**Filed by:** imoraru [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=339095614&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Hwee2nKEQYOkWlecEHj8OQ/runs/0/artifacts/public/logs/live_backing.log
**Reftest URL:** https://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Hwee2nKEQYOkWlecEHj8OQ/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

---
```
[task 2021-05-07T18:21:34.535Z] 18:21:34     INFO - TEST-START | browser/components/newtab/test/browser/browser_customize_menu_content.js
[task 2021-05-07T18:21:34.692Z] 18:21:34     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7f8db0f24400 == 8 [pid = 1695] [id = 7]
[task 2021-05-07T18:21:34.694Z] 18:21:34     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 18 (7f8db0feeac0) [pid = 1695] [serial = 22] [outer = 0]
[task 2021-05-07T18:21:34.695Z] 18:21:34     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 19 (7f8db10aec00) [pid = 1695] [serial = 23] [outer = 7f8db0feeac0]
[task 2021-05-07T18:21:34.800Z] 18:21:34     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 20 (7f8db170f000) [pid = 1695] [serial = 24] [outer = 7f8db0feeac0]
[task 2021-05-07T18:21:35.087Z] 18:21:35     INFO - GECKO(1536) | [Parent 1536, Main Thread] WARNING: NS_ENSURE_TRUE(aPrefName) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:2128
[task 2021-05-07T18:21:35.337Z] 18:21:35     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 19 (7f8dd1164e40) [pid = 1695] [serial = 1] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:35.338Z] 18:21:35     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 18 (7f8db176b040) [pid = 1695] [serial = 7] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:35.338Z] 18:21:35     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 17 (7f8db49a73c0) [pid = 1695] [serial = 4] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:35.338Z] 18:21:35     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f8db10b0400 == 7 [pid = 1695] [id = 2] [url = about:newtab]
[task 2021-05-07T18:21:35.338Z] 18:21:35     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f8db37a3000 == 6 [pid = 1695] [id = 1] [url = about:newtab]
[task 2021-05-07T18:21:35.338Z] 18:21:35     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f8dbab8e400 == 5 [pid = 1695] [id = 0] [url = about:newtab]
[task 2021-05-07T18:21:35.338Z] 18:21:35     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f8db170d400 == 4 [pid = 1695] [id = 3] [url = about:newtab]
[task 2021-05-07T18:21:35.339Z] 18:21:35     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 16 (7f8db176b580) [pid = 1695] [serial = 10] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:36.048Z] 18:21:36     INFO - GECKO(1536) | [Child 1695, Main Thread] WARNING: Scrolled rect smaller than scrollport?: file /builds/worker/checkouts/gecko/layout/generic/nsGfxScrollFrame.cpp:7064
[task 2021-05-07T18:21:36.154Z] 18:21:36     INFO - GECKO(1536) | [Child 1695, Main Thread] WARNING: Scrolled rect smaller than scrollport?: file /builds/worker/checkouts/gecko/layout/generic/nsGfxScrollFrame.cpp:7064
[task 2021-05-07T18:21:37.334Z] 18:21:37     INFO - GECKO(1536) | [Child 1695, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80040111 (NS_ERROR_NOT_AVAILABLE): file /builds/worker/checkouts/gecko/caps/BasePrincipal.cpp:1349
[task 2021-05-07T18:21:37.350Z] 18:21:37     INFO - GECKO(1536) | [Child 1695, Main Thread] WARNING: NS_ENSURE_TRUE(!mHasOrHasHadOwnerWindow || mOwnerWindow) failed: file /builds/worker/checkouts/gecko/dom/events/DOMEventTargetHelper.cpp:327
[task 2021-05-07T18:21:37.353Z] 18:21:37     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7f8db0f2b400 == 5 [pid = 1695] [id = 8]
[task 2021-05-07T18:21:37.354Z] 18:21:37     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 17 (7f8db0feee40) [pid = 1695] [serial = 25] [outer = 0]
[task 2021-05-07T18:21:37.355Z] 18:21:37     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 18 (7f8db10af800) [pid = 1695] [serial = 26] [outer = 7f8db0feee40]
[task 2021-05-07T18:21:37.460Z] 18:21:37     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 19 (7f8db358b000) [pid = 1695] [serial = 27] [outer = 7f8db0feee40]
[task 2021-05-07T18:21:38.003Z] 18:21:38     INFO - GECKO(1536) | [Child 1600: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7f09a00af000) [pid = 1600] [serial = 6] [outer = 0] [url = about:blank]
[task 2021-05-07T18:21:38.361Z] 18:21:38     INFO - GECKO(1536) | [Child 1695, Main Thread] WARNING: Scrolled rect smaller than scrollport?: file /builds/worker/checkouts/gecko/layout/generic/nsGfxScrollFrame.cpp:7064
[task 2021-05-07T18:21:38.865Z] 18:21:38     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 18 (7f8dbab96c00) [pid = 1695] [serial = 3] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:38.865Z] 18:21:38     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 17 (7f8db1713000) [pid = 1695] [serial = 12] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:38.865Z] 18:21:38     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 16 (7f8db10b6800) [pid = 1695] [serial = 9] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:38.865Z] 18:21:38     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 15 (7f8db1a15400) [pid = 1695] [serial = 6] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:38.865Z] 18:21:38     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 14 (7f8db10ad400) [pid = 1695] [serial = 14] [outer = 0] [url = about:blank]
[task 2021-05-07T18:21:39.227Z] 18:21:39     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 13 (7f8db176bac0) [pid = 1695] [serial = 13] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:39.228Z] 18:21:39     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f8db0f22800 == 4 [pid = 1695] [id = 5] [url = about:newtab]
[task 2021-05-07T18:21:39.229Z] 18:21:39     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f8db0f2ac00 == 3 [pid = 1695] [id = 4] [url = about:newtab]
[task 2021-05-07T18:21:39.229Z] 18:21:39     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 12 (7f8db0fee040) [pid = 1695] [serial = 16] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:42.443Z] 18:21:42     INFO - GECKO(1536) | [Child 1724: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f8887496000 == 0 [pid = 1724] [id = 1] [url = about:blank]
[task 2021-05-07T18:21:43.082Z] 18:21:43     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 11 (7f8db10aec00) [pid = 1695] [serial = 23] [outer = 0] [url = about:blank]
[task 2021-05-07T18:21:43.083Z] 18:21:43     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 10 (7f8db1a0cc00) [pid = 1695] [serial = 20] [outer = 0] [url = about:blank]
[task 2021-05-07T18:21:43.090Z] 18:21:43     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 9 (7f8db1a0ec00) [pid = 1695] [serial = 15] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:43.090Z] 18:21:43     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 8 (7f8db0f23800) [pid = 1695] [serial = 17] [outer = 0] [url = about:blank]
[task 2021-05-07T18:21:43.090Z] 18:21:43     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 7 (7f8db0f2d400) [pid = 1695] [serial = 18] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:43.254Z] 18:21:43     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f8db0f2a400 == 2 [pid = 1695] [id = 6] [url = about:newtab]
[task 2021-05-07T18:21:43.254Z] 18:21:43     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 6 (7f8db0fee580) [pid = 1695] [serial = 19] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:43.732Z] 18:21:43     INFO - GECKO(1536) | [Child 1695, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80040111 (NS_ERROR_NOT_AVAILABLE): file /builds/worker/checkouts/gecko/caps/BasePrincipal.cpp:1349
[task 2021-05-07T18:21:43.737Z] 18:21:43     INFO - TEST-INFO | started process screentopng
[task 2021-05-07T18:21:44.392Z] 18:21:44     INFO - TEST-INFO | screentopng: exit 0
[task 2021-05-07T18:21:44.392Z] 18:21:44     INFO - Buffered messages logged at 18:21:34
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - Entering test bound test_render_customizeMenu
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - Buffered messages logged at 18:21:35
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - Console message: [JavaScript Error: "Failed to fetch https://spocs.getpocket.com/user: Not one of allowed prefixes (data:)" {file: "resource://activity-stream/lib/DiscoveryStreamFeed.jsm" line: 275}]
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - fetchFromEndpoint@resource://activity-stream/lib/DiscoveryStreamFeed.jsm:275:10
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - clearSpocs@resource://activity-stream/lib/DiscoveryStreamFeed.jsm:841:16
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - onPrefChangedAction@resource://activity-stream/lib/DiscoveryStreamFeed.jsm:1552:16
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - onAction@resource://activity-stream/lib/DiscoveryStreamFeed.jsm:1772:20
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - _middleware/</<@resource://activity-stream/lib/Store.jsm:63:17
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - Store/this[method]@resource://activity-stream/lib/Store.jsm:39:54
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - onPrefChanged@resource://activity-stream/lib/PrefsFeed.jsm:34:18
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - observer@resource://activity-stream/lib/ActivityStreamPrefs.jsm:33:16
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - _setPref@resource://specialpowers/SpecialPowersParent.jsm:519:31
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - _applyPrefs@resource://specialpowers/SpecialPowersParent.jsm:409:14
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - pushPrefEnv/<@resource://specialpowers/SpecialPowersParent.jsm:495:12
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - doPrefEnvOp@resource://specialpowers/SpecialPowersParent.jsm:57:12
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - pushPrefEnv@resource://specialpowers/SpecialPowersParent.jsm:440:12
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - receiveMessage@resource://specialpowers/SpecialPowersParent.jsm:789:23
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - 
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Topsites are turned off - true == true - 
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Shortcuts section is not rendered - true == true - 
[task 2021-05-07T18:21:44.393Z] 18:21:44     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Shortcuts section is rendered - {} == true - 
[task 2021-05-07T18:21:44.396Z] 18:21:44     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Pocket pref is turned off - true == true - 
[task 2021-05-07T18:21:44.398Z] 18:21:44     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Pocket section is not rendered - true == true - 
[task 2021-05-07T18:21:44.398Z] 18:21:44     INFO - Buffered messages logged at 18:21:36
[task 2021-05-07T18:21:44.398Z] 18:21:44     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Pocket section is rendered - {} == true - 
[task 2021-05-07T18:21:44.398Z] 18:21:44     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Highlights pref is turned off - true == true - 
[task 2021-05-07T18:21:44.399Z] 18:21:44     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Highlights section is not rendered - true == true - 
[task 2021-05-07T18:21:44.402Z] 18:21:44     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Highlights section is rendered - {} == true - 
[task 2021-05-07T18:21:44.402Z] 18:21:44     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Snippets pref is turned off - true == true - 
[task 2021-05-07T18:21:44.402Z] 18:21:44     INFO - Buffered messages logged at 18:21:37
[task 2021-05-07T18:21:44.403Z] 18:21:44     INFO - Leaving test bound test_render_customizeMenu
[task 2021-05-07T18:21:44.403Z] 18:21:44     INFO - Entering test bound test_open_close_customizeMenu
[task 2021-05-07T18:21:44.403Z] 18:21:44     INFO - Buffered messages finished
[task 2021-05-07T18:21:44.403Z] 18:21:44     INFO - TEST-UNEXPECTED-FAIL | browser/components/newtab/test/browser/browser_customize_menu_content.js | Uncaught exception - Close button should be focused when menu becomes visible - timed out after 50 tries.
[task 2021-05-07T18:21:44.405Z] 18:21:44     INFO - Leaving test bound test_open_close_customizeMenu
[task 2021-05-07T18:21:44.405Z] 18:21:44     INFO - GECKO(1536) | MEMORY STAT | vsize 2925MB | residentFast 344MB | heapAllocated 109MB
[task 2021-05-07T18:21:44.405Z] 18:21:44     INFO - TEST-OK | browser/components/newtab/test/browser/browser_customize_menu_content.js | took 9287ms
[task 2021-05-07T18:21:44.407Z] 18:21:44     INFO - GECKO(1536) | [Child 1695, Main Thread] WARNING: NS_ENSURE_TRUE(!mHasOrHasHadOwnerWindow || mOwnerWindow) failed: file /builds/worker/checkouts/gecko/dom/events/DOMEventTargetHelper.cpp:327
[task 2021-05-07T18:21:44.407Z] 18:21:44     INFO - GECKO(1536) | [Child 1724: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7f8887493400 == 1 [pid = 1724] [id = 2]
[task 2021-05-07T18:21:44.407Z] 18:21:44     INFO - GECKO(1536) | [Child 1724: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 3 (7f889db64e40) [pid = 1724] [serial = 5] [outer = 0]
[task 2021-05-07T18:21:44.408Z] 18:21:44     INFO - GECKO(1536) | [Child 1724: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 4 (7f8887496400) [pid = 1724] [serial = 6] [outer = 7f889db64e40]
[task 2021-05-07T18:21:44.408Z] 18:21:44     INFO - checking window state
[task 2021-05-07T18:21:44.410Z] 18:21:44     INFO - GECKO(1536) | [Parent 1536: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 11 (7f006f80f800) [pid = 1536] [serial = 20] [outer = 7f0079dc5c80]
[task 2021-05-07T18:21:44.413Z] 18:21:44     INFO - GECKO(1536) | [Child 1695, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80040111 (NS_ERROR_NOT_AVAILABLE): file /builds/worker/checkouts/gecko/caps/BasePrincipal.cpp:1349
[task 2021-05-07T18:21:44.413Z] 18:21:44     INFO - GECKO(1536) | [Parent 1536, Main Thread] WARNING: NS_ENSURE_TRUE(presShell) failed: file /builds/worker/checkouts/gecko/dom/base/nsGlobalWindowOuter.cpp:4238
[task 2021-05-07T18:21:44.413Z] 18:21:44     INFO - GECKO(1536) | [Child 1600: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f09a00ab000 == 0 [pid = 1600] [id = 2] [url = about:blank]
[task 2021-05-07T18:21:44.417Z] 18:21:44     INFO - GECKO(1536) | [Child 1724: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (7f8887497400) [pid = 1724] [serial = 4] [outer = 0] [url = about:blank]
[task 2021-05-07T18:21:44.417Z] 18:21:44     INFO - GECKO(1536) | [Child 1724: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7f889db64200) [pid = 1724] [serial = 3] [outer = 0] [url = about:blank]
[task 2021-05-07T18:21:44.755Z] 18:21:44     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 5 (7f8db3717000) [pid = 1695] [serial = 21] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:44.835Z] 18:21:44     INFO - GECKO(1536) | [Child 1695, Main Thread] WARNING: NS_ENSURE_TRUE(!mHasOrHasHadOwnerWindow || mOwnerWindow) failed: file /builds/worker/checkouts/gecko/dom/events/DOMEventTargetHelper.cpp:327
[task 2021-05-07T18:21:44.836Z] 18:21:44     INFO - GECKO(1536) | [Child 1695, Main Thread] WARNING: NS_ENSURE_TRUE(!mHasOrHasHadOwnerWindow || mOwnerWindow) failed: file /builds/worker/checkouts/gecko/dom/events/DOMEventTargetHelper.cpp:327
[task 2021-05-07T18:21:45.073Z] 18:21:45     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 4 (7f8db10af800) [pid = 1695] [serial = 26] [outer = 0] [url = about:blank]
[task 2021-05-07T18:21:45.310Z] 18:21:45     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (7f8db0feeac0) [pid = 1695] [serial = 22] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:45.311Z] 18:21:45     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f8db0f24400 == 1 [pid = 1695] [id = 7] [url = about:newtab]
[task 2021-05-07T18:21:45.936Z] 18:21:45     INFO - GECKO(1536) | ###!!! [Parent][RunMessage] Error: Channel closing: too late to send/recv, messages will be lost
[task 2021-05-07T18:21:46.085Z] 18:21:46     INFO - GECKO(1536) | [Child 1746, Main Thread] WARNING: Extra shutdown CC: 'i < NORMAL_SHUTDOWN_COLLECTIONS', file /builds/worker/checkouts/gecko/xpcom/base/nsCycleCollector.cpp:3357
[task 2021-05-07T18:21:46.087Z] 18:21:46     INFO - GECKO(1536) | [Child 1746, Main Thread] WARNING: '!obs', file /builds/worker/checkouts/gecko/toolkit/components/sessionstore/RestoreTabContentObserver.cpp:58
[task 2021-05-07T18:21:46.129Z] 18:21:46     INFO - GECKO(1536) | [Child 1746, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4442
[task 2021-05-07T18:21:46.213Z] 18:21:46     INFO - GECKO(1536) | [Child 1600: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (7f09a00ad800) [pid = 1600] [serial = 8] [outer = 0] [url = about:blank]
[task 2021-05-07T18:21:46.214Z] 18:21:46     INFO - GECKO(1536) | [Child 1600: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (7f09bc964200) [pid = 1600] [serial = 7] [outer = 0] [url = about:blank]
[task 2021-05-07T18:21:46.375Z] 18:21:46     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7f8db170f000) [pid = 1695] [serial = 24] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:46.657Z] 18:21:46     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f8db0f2b400 == 0 [pid = 1695] [id = 8] [url = about:newtab]
[task 2021-05-07T18:21:46.657Z] 18:21:46     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (7f8db0feee40) [pid = 1695] [serial = 25] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:46.658Z] 18:21:46     INFO - GECKO(1536) | [Child 1695: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (7f8db358b000) [pid = 1695] [serial = 27] [outer = 0] [url = about:newtab]
[task 2021-05-07T18:21:47.444Z] 18:21:47     INFO - GECKO(1536) | Completed ShutdownLeaks collections in process 1600
[task 2021-05-07T18:21:47.484Z] 18:21:47     INFO - GECKO(1536) | Completed ShutdownLeaks collections in process 1724
[task 2021-05-07T18:21:47.834Z] 18:21:47     INFO - GECKO(1536) | Completed ShutdownLeaks collections in process 1695
[task 2021-05-07T18:21:48.136Z] 18:21:48     INFO - GECKO(1536) | Completed ShutdownLeaks collections in process 1622
[task 2021-05-07T18:21:48.217Z] 18:21:48     INFO - GECKO(1536) | [Parent 1536: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 10 (7f0076bb0000) [pid = 1536] [serial = 6] [outer = 0] [url = about:blank]
[task 2021-05-07T18:21:48.776Z] 18:21:48     INFO - GECKO(1536) | [Parent 1536: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 11 (7f006f80f400) [pid = 1536] [serial = 21] [outer = 7f0079dc5c80]
[task 2021-05-07T18:21:51.204Z] 18:21:51     INFO - GECKO(1536) | [Parent 1536: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 10 (7f006f80f800) [pid = 1536] [serial = 20] [outer = 0] [url = about:blank]
[task 2021-05-07T18:21:51.753Z] 18:21:51     INFO - GECKO(1536) | Completed ShutdownLeaks collections in process 1536
[task 2021-05-07T18:21:51.754Z] 18:21:51     INFO - TEST-START | Shutdown```