Bug: Intermittent browser/components/newtab/test/browser/browser_customize_menu_content.js | Shortcuts section is rendered - null == true - got null, expected true (operator ==)
Status: RESOLVED
Priority: P5
Resolution: DUPLICATE
Created: 2021-01-28 18:30:53+00:00
Resolved: 2022-07-26 00:08:39+00:00

**Filed by:** malexandru [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=328100698&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/KKdki916TdOa1_Hmr3s8BQ/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2021-01-28T17:17:22.058Z] 17:17:22     INFO - TEST-START | browser/components/newtab/test/browser/browser_customize_menu_content.js
[task 2021-01-28T17:17:22.121Z] 17:17:22     INFO - GECKO(4288) | [Child 2448, 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 2021-01-28T17:17:22.176Z] 17:17:22     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: NS_ENSURE_TRUE(!mHasOrHasHadOwnerWindow || mOwnerWindow) failed: file /builds/worker/checkouts/gecko/dom/events/DOMEventTargetHelper.cpp:327
[task 2021-01-28T17:17:22.251Z] 17:17:22     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0C5B0800 == 8 [pid = 2448] [id = 34]
[task 2021-01-28T17:17:22.251Z] 17:17:22     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 21 (0BA12800) [pid = 2448] [serial = 104] [outer = 00000000]
[task 2021-01-28T17:17:22.252Z] 17:17:22     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 22 (0C5B3400) [pid = 2448] [serial = 105] [outer = 0BA12800]
[task 2021-01-28T17:17:22.299Z] 17:17:22     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0AD1EC00 == 7 [pid = 2448] [id = 32] [url = about:newtab]
[task 2021-01-28T17:17:22.300Z] 17:17:22     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 21 (0C9C4900) [pid = 2448] [serial = 98] [outer = 00000000] [url = about:newtab]
[task 2021-01-28T17:17:22.300Z] 17:17:22     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 20 (0A55F200) [pid = 2448] [serial = 95] [outer = 00000000] [url = about:home]
[task 2021-01-28T17:17:22.300Z] 17:17:22     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0AD18C00 == 6 [pid = 2448] [id = 31] [url = about:home]
[task 2021-01-28T17:17:22.300Z] 17:17:22     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0A5EF800 == 5 [pid = 2448] [id = 29] [url = about:newtab?endpoint=https://example.com/browser/browser/components/newtab/test/browser/snippet_simple_test.json]
[task 2021-01-28T17:17:22.300Z] 17:17:22     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0A5F5400 == 4 [pid = 2448] [id = 30] [url = about:newtab?endpoint=https://example.com/browser/browser/components/newtab/test/browser/snippet.json]
[task 2021-01-28T17:17:22.301Z] 17:17:22     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 19 (0A55FB00) [pid = 2448] [serial = 89] [outer = 00000000] [url = about:newtab?endpoint=https://example.com/browser/browser/components/newtab/test/browser/snippet_simple_test.json]
[task 2021-01-28T17:17:22.301Z] 17:17:22     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 18 (072B1100) [pid = 2448] [serial = 86] [outer = 00000000] [url = about:newtab?endpoint=https://example.com/browser/browser/components/newtab/test/browser/snippet_below_search_test.json]
[task 2021-01-28T17:17:22.301Z] 17:17:22     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 012AE800 == 3 [pid = 2448] [id = 28] [url = about:newtab?endpoint=https://example.com/browser/browser/components/newtab/test/browser/snippet_below_search_test.json]
[task 2021-01-28T17:17:22.301Z] 17:17:22     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 17 (0AD9C600) [pid = 2448] [serial = 92] [outer = 00000000] [url = about:newtab?endpoint=https://example.com/browser/browser/components/newtab/test/browser/snippet.json]
[task 2021-01-28T17:17:22.316Z] 17:17:22     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 18 (0A5EE400) [pid = 2448] [serial = 106] [outer = 0BA12800]
[task 2021-01-28T17:17:22.604Z] 17:17:22     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: Scrolled rect smaller than scrollport?: file /builds/worker/checkouts/gecko/layout/generic/nsGfxScrollFrame.cpp:6945
[task 2021-01-28T17:17:22.679Z] 17:17:22     INFO - GECKO(4288) | [Parent 5460, Main Thread] WARNING: NS_ENSURE_TRUE(aPrefName) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:2128
[task 2021-01-28T17:17:23.141Z] 17:17:23     INFO - GECKO(4288) | [Parent 5460: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 28345000 == 9 [pid = 5460] [id = 12] [url = about:blank]
[task 2021-01-28T17:17:23.188Z] 17:17:23     INFO - GECKO(4288) | [Parent 5460: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 26251000 == 8 [pid = 5460] [id = 14] [url = about:blank]
[task 2021-01-28T17:17:23.426Z] 17:17:23     INFO - GECKO(4288) | [Child 5912: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 4 (0AC5FC00) [pid = 5912] [serial = 52] [outer = 00000000] [url = about:blank]
[task 2021-01-28T17:17:23.426Z] 17:17:23     INFO - GECKO(4288) | [Child 5912: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 009B3C00 == 1 [pid = 5912] [id = 14] [url = about:blank]
[task 2021-01-28T17:17:23.426Z] 17:17:23     INFO - GECKO(4288) | [Child 5912: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 06CB2800 == 0 [pid = 5912] [id = 15] [url = about:blank]
[task 2021-01-28T17:17:23.446Z] 17:17:23     INFO - GECKO(4288) | [Child 5912: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (06CE2A00) [pid = 5912] [serial = 55] [outer = 00000000] [url = about:blank]
[task 2021-01-28T17:17:23.446Z] 17:17:23     INFO - GECKO(4288) | [Child 5912: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (00966300) [pid = 5912] [serial = 53] [outer = 00000000] [url = about:blank]
[task 2021-01-28T17:17:23.633Z] 17:17:23     INFO - TEST-INFO | started process screenshot
[task 2021-01-28T17:17:23.700Z] 17:17:23     INFO - TEST-INFO | screenshot: exit 0
[task 2021-01-28T17:17:23.700Z] 17:17:23     INFO - Buffered messages logged at 17:17:22
[task 2021-01-28T17:17:23.700Z] 17:17:23     INFO - Entering test bound test_render_customizeMenu
[task 2021-01-28T17:17:23.700Z] 17:17:23     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 2021-01-28T17:17:23.700Z] 17:17:23     INFO - fetchFromEndpoint@resource://activity-stream/lib/DiscoveryStreamFeed.jsm:275:10
[task 2021-01-28T17:17:23.700Z] 17:17:23     INFO - clearSpocs@resource://activity-stream/lib/DiscoveryStreamFeed.jsm:841:16
[task 2021-01-28T17:17:23.700Z] 17:17:23     INFO - onPrefChangedAction@resource://activity-stream/lib/DiscoveryStreamFeed.jsm:1560:16
[task 2021-01-28T17:17:23.700Z] 17:17:23     INFO - onAction@resource://activity-stream/lib/DiscoveryStreamFeed.jsm:1780:20
[task 2021-01-28T17:17:23.701Z] 17:17:23     INFO - _middleware/</<@resource://activity-stream/lib/Store.jsm:63:17
[task 2021-01-28T17:17:23.701Z] 17:17:23     INFO - Store/this[method]@resource://activity-stream/lib/Store.jsm:39:54
[task 2021-01-28T17:17:23.701Z] 17:17:23     INFO - onPrefChanged@resource://activity-stream/lib/PrefsFeed.jsm:48:18
[task 2021-01-28T17:17:23.701Z] 17:17:23     INFO - observer@resource://activity-stream/lib/ActivityStreamPrefs.jsm:33:16
[task 2021-01-28T17:17:23.701Z] 17:17:23     INFO - _setPref@resource://specialpowers/SpecialPowersParent.jsm:554:31
[task 2021-01-28T17:17:23.701Z] 17:17:23     INFO - _applyPrefs@resource://specialpowers/SpecialPowersParent.jsm:444:14
[task 2021-01-28T17:17:23.701Z] 17:17:23     INFO - pushPrefEnv/<@resource://specialpowers/SpecialPowersParent.jsm:530:12
[task 2021-01-28T17:17:23.701Z] 17:17:23     INFO - doPrefEnvOp@resource://specialpowers/SpecialPowersParent.jsm:70:12
[task 2021-01-28T17:17:23.701Z] 17:17:23     INFO - pushPrefEnv@resource://specialpowers/SpecialPowersParent.jsm:475:12
[task 2021-01-28T17:17:23.701Z] 17:17:23     INFO - receiveMessage@resource://specialpowers/SpecialPowersParent.jsm:822:21
[task 2021-01-28T17:17:23.701Z] 17:17:23     INFO - 
[task 2021-01-28T17:17:23.702Z] 17:17:23     INFO - Buffered messages logged at 17:17:23
[task 2021-01-28T17:17:23.702Z] 17:17:23     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Topsites are turned off - true == true - 
[task 2021-01-28T17:17:23.702Z] 17:17:23     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Shortcuts section is not rendered - true == true - 
[task 2021-01-28T17:17:23.702Z] 17:17:23     INFO - Buffered messages finished
[task 2021-01-28T17:17:23.702Z] 17:17:23     INFO - TEST-UNEXPECTED-FAIL | browser/components/newtab/test/browser/browser_customize_menu_content.js | Shortcuts section is rendered - null == true - got null, expected true (operator ==)
[task 2021-01-28T17:17:23.702Z] 17:17:23     INFO - Stack trace:
[task 2021-01-28T17:17:23.702Z] 17:17:23     INFO - test_render_customizeMenu@chrome://mochitests/content/browser/browser/components/newtab/test/browser/browser_customize_menu_content.js:60:12
[task 2021-01-28T17:17:23.702Z] 17:17:23     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Pocket pref is turned off - true == true - 
[task 2021-01-28T17:17:23.703Z] 17:17:23     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Pocket section is not rendered - true == true - 
[task 2021-01-28T17:17:23.997Z] 17:17:23     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Pocket section is rendered - {} == true - 
[task 2021-01-28T17:17:23.997Z] 17:17:23     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Highlights pref is turned off - true == true - 
[task 2021-01-28T17:17:23.997Z] 17:17:23     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Highlights section is not rendered - true == true - 
[task 2021-01-28T17:17:24.057Z] 17:17:24     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8458
[task 2021-01-28T17:17:24.060Z] 17:17:24     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8458
[task 2021-01-28T17:17:24.119Z] 17:17:24     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8458
[task 2021-01-28T17:17:24.120Z] 17:17:24     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8458
[task 2021-01-28T17:17:24.121Z] 17:17:24     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8458
[task 2021-01-28T17:17:24.176Z] 17:17:24     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: Scrolled rect smaller than scrollport?: file /builds/worker/checkouts/gecko/layout/generic/nsGfxScrollFrame.cpp:6945
[task 2021-01-28T17:17:24.231Z] 17:17:24     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: Scrolled rect smaller than scrollport?: file /builds/worker/checkouts/gecko/layout/generic/nsGfxScrollFrame.cpp:6945
[task 2021-01-28T17:17:24.306Z] 17:17:24     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8458
[task 2021-01-28T17:17:24.353Z] 17:17:24     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Highlights section is rendered - {} == true - 
[task 2021-01-28T17:17:24.353Z] 17:17:24     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Snippets pref is turned off - true == true - 
[task 2021-01-28T17:17:24.357Z] 17:17:24     INFO - GECKO(4288) | [Child 2288: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 8 (0B145800) [pid = 2288] [serial = 40] [outer = 00000000] [url = about:blank]
[task 2021-01-28T17:17:24.357Z] 17:17:24     INFO - GECKO(4288) | [Child 2288: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 7 (0B13B000) [pid = 2288] [serial = 34] [outer = 00000000] [url = about:blank]
[task 2021-01-28T17:17:24.360Z] 17:17:24     INFO - GECKO(4288) | [Child 2288: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 6 (06DBD800) [pid = 2288] [serial = 36] [outer = 00000000] [url = about:blank]
[task 2021-01-28T17:17:24.360Z] 17:17:24     INFO - GECKO(4288) | [Child 2288: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 5 (0B13C800) [pid = 2288] [serial = 39] [outer = 00000000] [url = about:blank]
[task 2021-01-28T17:17:24.360Z] 17:17:24     INFO - GECKO(4288) | [Child 2288: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 4 (0B140800) [pid = 2288] [serial = 37] [outer = 00000000] [url = about:blank]
[task 2021-01-28T17:17:24.360Z] 17:17:24     INFO - GECKO(4288) | [Child 2288: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0B13E400 == 1 [pid = 2288] [id = 15] [url = about:blank]
[task 2021-01-28T17:17:24.387Z] 17:17:24     INFO - GECKO(4288) | [Child 2288: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (09C42E00) [pid = 2288] [serial = 41] [outer = 00000000] [url = about:blank]
[task 2021-01-28T17:17:24.590Z] 17:17:24     INFO - Leaving test bound test_render_customizeMenu
[task 2021-01-28T17:17:24.590Z] 17:17:24     INFO - Entering test bound test_open_close_customizeMenu
[task 2021-01-28T17:17:24.625Z] 17:17:24     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8458
[task 2021-01-28T17:17:24.625Z] 17:17:24     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8458
[task 2021-01-28T17:17:24.740Z] 17:17:24     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8458
[task 2021-01-28T17:17:24.740Z] 17:17:24     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8458
[task 2021-01-28T17:17:24.877Z] 17:17:24     INFO - GECKO(4288) | [Child 2448, 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 2021-01-28T17:17:24.912Z] 17:17:24     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: NS_ENSURE_TRUE(!mHasOrHasHadOwnerWindow || mOwnerWindow) failed: file /builds/worker/checkouts/gecko/dom/events/DOMEventTargetHelper.cpp:327
[task 2021-01-28T17:17:24.912Z] 17:17:24     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0AD26000 == 4 [pid = 2448] [id = 35]
[task 2021-01-28T17:17:24.912Z] 17:17:24     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 19 (0BA14600) [pid = 2448] [serial = 107] [outer = 00000000]
[task 2021-01-28T17:17:24.913Z] 17:17:24     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 20 (0AD88C00) [pid = 2448] [serial = 108] [outer = 0BA14600]
[task 2021-01-28T17:17:24.948Z] 17:17:24     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 21 (0AD8F800) [pid = 2448] [serial = 109] [outer = 0BA14600]
[task 2021-01-28T17:17:25.375Z] 17:17:25     INFO - GECKO(4288) | [Child 2448, Main Thread] WARNING: Scrolled rect smaller than scrollport?: file /builds/worker/checkouts/gecko/layout/generic/nsGfxScrollFrame.cpp:6945
[task 2021-01-28T17:17:26.002Z] 17:17:26     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 20 (0AA36400) [pid = 2448] [serial = 93] [outer = 00000000] [url = about:blank]
[task 2021-01-28T17:17:26.002Z] 17:17:26     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 19 (0AD1D800) [pid = 2448] [serial = 94] [outer = 00000000] [url = about:newtab?endpoint=https://example.com/browser/browser/components/newtab/test/browser/snippet.json]
[task 2021-01-28T17:17:26.002Z] 17:17:26     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 18 (072C3400) [pid = 2448] [serial = 87] [outer = 00000000] [url = about:blank]
[task 2021-01-28T17:17:26.002Z] 17:17:26     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 17 (0A5F3C00) [pid = 2448] [serial = 88] [outer = 00000000] [url = about:newtab?endpoint=https://example.com/browser/browser/components/newtab/test/browser/snippet_below_search_test.json]
[task 2021-01-28T17:17:26.002Z] 17:17:26     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 16 (0AD27800) [pid = 2448] [serial = 97] [outer = 00000000] [url = about:home]
[task 2021-01-28T17:17:26.003Z] 17:17:26     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 15 (0AD1A800) [pid = 2448] [serial = 96] [outer = 00000000] [url = about:blank]
[task 2021-01-28T17:17:26.003Z] 17:17:26     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 14 (0A5F4400) [pid = 2448] [serial = 90] [outer = 00000000] [url = about:blank]
[task 2021-01-28T17:17:26.003Z] 17:17:26     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 13 (0BA2C800) [pid = 2448] [serial = 100] [outer = 00000000] [url = about:newtab]
[task 2021-01-28T17:17:26.003Z] 17:17:26     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 12 (0AD26800) [pid = 2448] [serial = 99] [outer = 00000000] [url = about:blank]
[task 2021-01-28T17:17:26.003Z] 17:17:26     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 11 (0AA3A000) [pid = 2448] [serial = 91] [outer = 00000000] [url = about:newtab?endpoint=https://example.com/browser/browser/components/newtab/test/browser/snippet_simple_test.json]
[task 2021-01-28T17:17:26.282Z] 17:17:26     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 10 (0D7EE300) [pid = 2448] [serial = 83] [outer = 00000000] [url = about:newtab]
[task 2021-01-28T17:17:26.282Z] 17:17:26     INFO - GECKO(4288) | [Child 2448: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0C5AA400 == 3 [pid = 2448] [id = 27] [url = about:newtab]
[task 2021-01-28T17:17:26.637Z] 17:17:26     INFO - Leaving test bound test_open_close_customizeMenu
[task 2021-01-28T17:17:26.678Z] 17:17:26     INFO - GECKO(4288) | MEMORY STAT | vsize 984MB | vsizeMaxContiguous 527MB | residentFast 343MB | heapAllocated 147MB
[task 2021-01-28T17:17:26.679Z] 17:17:26     INFO - TEST-OK | browser/components/newtab/test/browser/browser_customize_menu_content.js | took 4620ms
[task 2021-01-28T17:17:26.694Z] 17:17:26     INFO - GECKO(4288) | [Child 5912: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 06CAF000 == 1 [pid = 5912] [id = 16]
[task 2021-01-28T17:17:26.694Z] 17:17:26     INFO - GECKO(4288) | [Child 5912: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 3 (00966500) [pid = 5912] [serial = 57] [outer = 00000000]
[task 2021-01-28T17:17:26.695Z] 17:17:26     INFO - GECKO(4288) | [Child 5912: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 4 (06CB3000) [pid = 5912] [serial = 58] [outer = 00966500]
[task 2021-01-28T17:17:26.710Z] 17:17:26     INFO - checking window state
[task 2021-01-28T17:17:26.733Z] 17:17:26     INFO - TEST-START | browser/components/newtab/test/browser/browser_customize_menu_render.js```