Bug: Intermittent browser/components/newtab/test/browser/browser_customize_menu_content.js | Highlights section is rendered - null == true - got null, expected true (operator ==)
Status: NEW
Priority: P5
Created: 2021-01-21 07:19:40+00:00
Resolved: 2022-07-04 06:39:14+00:00

**Filed by:** malexandru [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=327339776&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/TzbjiU5iS3WBSV-QL4BC1A/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2021-01-21T06:30:27.739Z] 06:30:27     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Highlights section is not rendered - true == true - 
[task 2021-01-21T06:30:27.740Z] 06:30:27     INFO - Buffered messages finished
[task 2021-01-21T06:30:27.741Z] 06:30:27     INFO - TEST-UNEXPECTED-FAIL | browser/components/newtab/test/browser/browser_customize_menu_content.js | Highlights section is rendered - null == true - got null, expected true (operator ==)
[task 2021-01-21T06:30:27.741Z] 06:30:27     INFO - Stack trace:
[task 2021-01-21T06:30:27.742Z] 06:30:27     INFO - test_render_customizeMenu@chrome://mochitests/content/browser/browser/components/newtab/test/browser/browser_customize_menu_content.js:131:12
[task 2021-01-21T06:30:27.743Z] 06:30:27     INFO - TEST-PASS | browser/components/newtab/test/browser/browser_customize_menu_content.js | Snippets pref is turned off - true == true - 
[task 2021-01-21T06:30:27.743Z] 06:30:27     INFO - GECKO(9061) | [Child 9119: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 6 (0x7f6b61d9d800) [pid = 9119] [serial = 26] [outer = (nil)] [url = about:blank]
[task 2021-01-21T06:30:27.748Z] 06:30:27     INFO - GECKO(9061) | [Child 9119: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 5 (0x7f6b60e6a800) [pid = 9119] [serial = 21] [outer = (nil)] [url = about:blank]
[task 2021-01-21T06:30:27.749Z] 06:30:27     INFO - GECKO(9061) | [Child 9119: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 4 (0x7f6b61e3b400) [pid = 9119] [serial = 27] [outer = (nil)] [url = about:blank]
[task 2021-01-21T06:30:27.750Z] 06:30:27     INFO - GECKO(9061) | [Child 9119: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (0x7f6b61e37400) [pid = 9119] [serial = 24] [outer = (nil)] [url = about:blank]
[task 2021-01-21T06:30:27.752Z] 06:30:27     INFO - GECKO(9061) | [Child 9119: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (0x7f6b61d98800) [pid = 9119] [serial = 23] [outer = (nil)] [url = about:blank]
[task 2021-01-21T06:30:27.753Z] 06:30:27     INFO - GECKO(9061) | [Child 9119: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (0x7f6b61e38800) [pid = 9119] [serial = 29] [outer = (nil)] [url = about:blank]
[task 2021-01-21T06:30:27.753Z] 06:30:27     INFO - GECKO(9061) | [Child 9119: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (0x7f6b61e39c00) [pid = 9119] [serial = 31] [outer = (nil)] [url = about:blank]
[task 2021-01-21T06:30:27.850Z] 06:30:27     INFO - Leaving test bound test_render_customizeMenu
[task 2021-01-21T06:30:27.967Z] 06:30:27     INFO - GECKO(9061) | MEMORY STAT | vsize 3137MB | residentFast 406MB | heapAllocated 147MB
[task 2021-01-21T06:30:27.968Z] 06:30:27     INFO - TEST-OK | browser/components/newtab/test/browser/browser_customize_menu_content.js | took 5169ms
[task 2021-01-21T06:30:27.988Z] 06:30:27     INFO - GECKO(9061) | [Child 9119: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7f6b60e6b800 == 1 [pid = 9119] [id = 13]
[task 2021-01-21T06:30:27.988Z] 06:30:27     INFO - GECKO(9061) | [Child 9119: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 1 (0x7f6b60ee7200) [pid = 9119] [serial = 32] [outer = (nil)]
[task 2021-01-21T06:30:27.989Z] 06:30:27     INFO - GECKO(9061) | [Child 9119: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 2 (0x7f6b61d9c400) [pid = 9119] [serial = 33] [outer = 0x7f6b60ee7200]
[task 2021-01-21T06:30:28.051Z] 06:30:28     INFO - checking window state
[task 2021-01-21T06:30:28.160Z] 06:30:28     INFO - TEST-START | browser/components/newtab/test/browser/browser_customize_menu_render.js
[task 2021-01-21T06:30:28.382Z] 06:30:28     INFO - GECKO(9061) | [Child 9196, 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 2021-01-21T06:30:28.459Z] 06:30:28     INFO - GECKO(9061) | [Child 9196, Main Thread] WARNING: NS_ENSURE_TRUE(!mHasOrHasHadOwnerWindow || mOwnerWindow) failed: file /builds/worker/checkouts/gecko/dom/events/DOMEventTargetHelper.cpp:327
[task 2021-01-21T06:30:28.460Z] 06:30:28     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7ff47d4e1800 == 3 [pid = 9196] [id = 33]
[task 2021-01-21T06:30:28.460Z] 06:30:28     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 8 (0x7ff47ec58ac0) [pid = 9196] [serial = 102] [outer = (nil)]
[task 2021-01-21T06:30:28.461Z] 06:30:28     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 9 (0x7ff47d4e5000) [pid = 9196] [serial = 103] [outer = 0x7ff47ec58ac0]
[task 2021-01-21T06:30:28.509Z] 06:30:28     INFO - GECKO(9061) | [Child 9196, Main Thread] WARNING: NS_ENSURE_TRUE(browsingContext->IsContentSubframe()) failed: file /builds/worker/checkouts/gecko/dom/base/Document.cpp:3704
[task 2021-01-21T06:30:28.510Z] 06:30:28     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 10 (0x7ff47ecac800) [pid = 9196] [serial = 104] [outer = 0x7ff47ec58ac0]
[task 2021-01-21T06:30:28.546Z] 06:30:28     INFO - GECKO(9061) | [Parent 9061: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7fdddd7c9c00 == 5 [pid = 9061] [id = 9] [url = about:config]
[task 2021-01-21T06:30:28.547Z] 06:30:28     INFO - GECKO(9061) | [Parent 9061: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 19 (0x7fdddf9d3580) [pid = 9061] [serial = 25] [outer = (nil)] [url = about:blank]
[task 2021-01-21T06:30:28.548Z] 06:30:28     INFO - GECKO(9061) | [Parent 9061: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 18 (0x7fdddd7f0200) [pid = 9061] [serial = 29] [outer = (nil)] [url = about:blank]
[task 2021-01-21T06:30:28.549Z] 06:30:28     INFO - GECKO(9061) | [Parent 9061: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 17 (0x7fdddd7f0ac0) [pid = 9061] [serial = 27] [outer = (nil)] [url = chrome://browser/content/browser.xhtml]
[task 2021-01-21T06:30:28.550Z] 06:30:28     INFO - GECKO(9061) | [Parent 9061: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 16 (0x7fdddd7f0c80) [pid = 9061] [serial = 23] [outer = (nil)] [url = chrome://browser/content/browser.xhtml]
[task 2021-01-21T06:30:28.550Z] 06:30:28     INFO - GECKO(9061) | [Parent 9061: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 15 (0x7fdddf9d3200) [pid = 9061] [serial = 20] [outer = (nil)] [url = about:config]
[task 2021-01-21T06:30:29.101Z] 06:30:29     INFO - GECKO(9061) | [Child 9196, Main Thread] WARNING: Scrolled rect smaller than scrollport?: file /builds/worker/checkouts/gecko/layout/generic/nsGfxScrollFrame.cpp:6983
[task 2021-01-21T06:30:29.747Z] 06:30:29     INFO - GECKO(9061) | [Child 9196, 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 2021-01-21T06:30:29.783Z] 06:30:29     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7ff47f7eac00 == 4 [pid = 9196] [id = 34]
[task 2021-01-21T06:30:29.784Z] 06:30:29     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 11 (0x7ff47ec58e40) [pid = 9196] [serial = 105] [outer = (nil)]
[task 2021-01-21T06:30:29.785Z] 06:30:29     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 12 (0x7ff47fe4e800) [pid = 9196] [serial = 106] [outer = 0x7ff47ec58e40]
[task 2021-01-21T06:30:29.821Z] 06:30:29     INFO - GECKO(9061) | [Child 9196, Main Thread] WARNING: NS_ENSURE_TRUE(!mHasOrHasHadOwnerWindow || mOwnerWindow) failed: file /builds/worker/checkouts/gecko/dom/events/DOMEventTargetHelper.cpp:327
[task 2021-01-21T06:30:29.877Z] 06:30:29     INFO - GECKO(9061) | [Child 9196, Main Thread] WARNING: NS_ENSURE_TRUE(browsingContext->IsContentSubframe()) failed: file /builds/worker/checkouts/gecko/dom/base/Document.cpp:3704
[task 2021-01-21T06:30:29.878Z] 06:30:29     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 13 (0x7ff47fe54000) [pid = 9196] [serial = 107] [outer = 0x7ff47ec58e40]
[task 2021-01-21T06:30:30.528Z] 06:30:30     INFO - GECKO(9061) | [Child 9196, Main Thread] WARNING: Scrolled rect smaller than scrollport?: file /builds/worker/checkouts/gecko/layout/generic/nsGfxScrollFrame.cpp:6983
[task 2021-01-21T06:30:30.828Z] 06:30:30     INFO - GECKO(9061) | [Child 9196, 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 2021-01-21T06:30:30.869Z] 06:30:30     INFO - GECKO(9061) | [Child 9196, Main Thread] WARNING: NS_ENSURE_TRUE(!mHasOrHasHadOwnerWindow || mOwnerWindow) failed: file /builds/worker/checkouts/gecko/dom/events/DOMEventTargetHelper.cpp:327
[task 2021-01-21T06:30:31.018Z] 06:30:31     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7ff47f71dc00 == 5 [pid = 9196] [id = 35]
[task 2021-01-21T06:30:31.018Z] 06:30:31     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 14 (0x7ff481989200) [pid = 9196] [serial = 108] [outer = (nil)]
[task 2021-01-21T06:30:31.018Z] 06:30:31     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 15 (0x7ff47f7e8400) [pid = 9196] [serial = 109] [outer = 0x7ff481989200]
[task 2021-01-21T06:30:31.122Z] 06:30:31     INFO - GECKO(9061) | [Child 9196, Main Thread] WARNING: NS_ENSURE_TRUE(browsingContext->IsContentSubframe()) failed: file /builds/worker/checkouts/gecko/dom/base/Document.cpp:3704
[task 2021-01-21T06:30:31.122Z] 06:30:31     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 16 (0x7ff47fe5a400) [pid = 9196] [serial = 110] [outer = 0x7ff481989200]
[task 2021-01-21T06:30:31.764Z] 06:30:31     INFO - GECKO(9061) | [Parent 9061: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 14 (0x7fdde084e800) [pid = 9061] [serial = 26] [outer = (nil)] [url = about:blank]
[task 2021-01-21T06:30:31.765Z] 06:30:31     INFO - GECKO(9061) | [Parent 9061: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 13 (0x7fdddfc24c00) [pid = 9061] [serial = 28] [outer = (nil)] [url = about:blank]
[task 2021-01-21T06:30:31.765Z] 06:30:31     INFO - GECKO(9061) | [Parent 9061: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 12 (0x7fdde0675c00) [pid = 9061] [serial = 30] [outer = (nil)] [url = about:blank]
[task 2021-01-21T06:30:31.765Z] 06:30:31     INFO - GECKO(9061) | [Parent 9061: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 11 (0x7fddea43f800) [pid = 9061] [serial = 24] [outer = (nil)] [url = about:blank]
[task 2021-01-21T06:30:31.766Z] 06:30:31     INFO - GECKO(9061) | [Parent 9061: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 10 (0x7fdde2ab5400) [pid = 9061] [serial = 22] [outer = (nil)] [url = about:config]
[task 2021-01-21T06:30:31.933Z] 06:30:31     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 15 (0x7ff47f7e7800) [pid = 9196] [serial = 100] [outer = (nil)] [url = about:blank]
[task 2021-01-21T06:30:31.934Z] 06:30:31     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 14 (0x7ff47920d800) [pid = 9196] [serial = 97] [outer = (nil)] [url = about:blank]
[task 2021-01-21T06:30:31.935Z] 06:30:31     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 13 (0x7ff47fe58000) [pid = 9196] [serial = 83] [outer = (nil)] [url = about:newtab]
[task 2021-01-21T06:30:32.661Z] 06:30:32     INFO - GECKO(9061) | [Child 9196, Main Thread] WARNING: Scrolled rect smaller than scrollport?: file /builds/worker/checkouts/gecko/layout/generic/nsGfxScrollFrame.cpp:6983
[task 2021-01-21T06:30:32.972Z] 06:30:32     INFO - GECKO(9061) | [Child 9196, 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 2021-01-21T06:30:32.988Z] 06:30:32     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7ff47d206800 == 6 [pid = 9196] [id = 36]
[task 2021-01-21T06:30:32.988Z] 06:30:32     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 14 (0x7ff4819893c0) [pid = 9196] [serial = 111] [outer = (nil)]
[task 2021-01-21T06:30:32.995Z] 06:30:32     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 15 (0x7ff47d208c00) [pid = 9196] [serial = 112] [outer = 0x7ff4819893c0]
[task 2021-01-21T06:30:33.100Z] 06:30:33     INFO - GECKO(9061) | [Child 9196, Main Thread] WARNING: NS_ENSURE_TRUE(!mHasOrHasHadOwnerWindow || mOwnerWindow) failed: file /builds/worker/checkouts/gecko/dom/events/DOMEventTargetHelper.cpp:327
[task 2021-01-21T06:30:33.139Z] 06:30:33     INFO - GECKO(9061) | [Child 9196, Main Thread] WARNING: NS_ENSURE_TRUE(browsingContext->IsContentSubframe()) failed: file /builds/worker/checkouts/gecko/dom/base/Document.cpp:3704
[task 2021-01-21T06:30:33.139Z] 06:30:33     INFO - GECKO(9061) | [Child 9196: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 16 (0x7ff47d20dc00) [pid = 9196] [serial = 113] [outer = 0x7ff4819893c0]
[task 2021-01-21T06:30:33.440Z] 06:30:33     INFO - GECKO(9061) | [Child 9196, 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 2021-01-21T06:30:33.447Z] 06:30:33     INFO - GECKO(9061) | [Child 9196, Main Thread] WARNING: NS_ENSURE_TRUE(!mHasOrHasHadOwnerWindow || mOwnerWindow) failed: file /builds/worker/checkouts/gecko/dom/events/DOMEventTargetHelper.cpp:327
[task 2021-01-21T06:30:33.524Z] 06:30:33     INFO - GECKO(9061) | MEMORY STAT | vsize 3104MB | residentFast 395MB | heapAllocated 135MB
[task 2021-01-21T06:30:33.524Z] 06:30:33     INFO - TEST-OK | browser/components/newtab/test/browser/browser_customize_menu_render.js | took 5360ms
[task 2021-01-21T06:30:33.545Z] 06:30:33     INFO - GECKO(9061) | [Child 9222: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7f85ec037800 == 2 [pid = 9222] [id = 13]
[task 2021-01-21T06:30:33.545Z] 06:30:33     INFO - GECKO(9061) | [Child 9222: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 3 (0x7f85ebf41040) [pid = 9222] [serial = 30] [outer = (nil)]
[task 2021-01-21T06:30:33.545Z] 06:30:33     INFO - GECKO(9061) | [Child 9222: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 4 (0x7f85ec038800) [pid = 9222] [serial = 31] [outer = 0x7f85ebf41040]
[task 2021-01-21T06:30:33.628Z] 06:30:33     INFO - GECKO(9061) | [Child 9196, Main Thread] WARNING: Scrolled rect smaller than scrollport?: file /builds/worker/checkouts/gecko/layout/generic/nsGfxScrollFrame.cpp:6983
[task 2021-01-21T06:30:33.644Z] 06:30:33     INFO - checking window state
[task 2021-01-21T06:30:33.801Z] 06:30:33     INFO - TEST-START | browser/components/newtab/test/browser/browser_discovery_card.js```