Bug: TV failure - browser/components/preferences/in-content/tests/browser_filetype_dialog.js | Uncaught exception - [Exception... "Component returned failure code: 0x80520008 (NS_ERROR_FILE_ALREADY_EXISTS) [nsIFile.create]"....
Status: VERIFIED
Priority: P5
Resolution: FIXED
Created: 2020-03-31 02:23:53+00:00
Resolved: 2020-04-06 08:54:43+00:00

**Filed by:** dluca [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer.html#?job_id=295497488&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/DHpad8GaRJ22lSpEc5GoAg/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/DHpad8GaRJ22lSpEc5GoAg/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

---

```
INFO - TEST-START | browser/components/preferences/in-content/tests/browser_filetype_dialog.js
[task 2020-03-31T00:06:45.728Z] 00:06:45     INFO - GECKO(1228) | Couldn't convert chrome URL: chrome://branding/locale/brand.properties
[task 2020-03-31T00:06:45.731Z] 00:06:45     INFO - Entering test bound setup
[task 2020-03-31T00:06:45.740Z] 00:06:45     INFO - TEST-INFO | started process screentopng
[task 2020-03-31T00:06:46.097Z] 00:06:46     INFO - TEST-INFO | screentopng: exit 0
[task 2020-03-31T00:06:46.098Z] 00:06:46     INFO - TEST-UNEXPECTED-FAIL | browser/components/preferences/in-content/tests/browser_filetype_dialog.js | Uncaught exception - [Exception... "Component returned failure code: 0x80520008 (NS_ERROR_FILE_ALREADY_EXISTS) [nsIFile.create]"  nsresult: "0x80520008 (NS_ERROR_FILE_ALREADY_EXISTS)"  location: "JS frame :: chrome://mochitests/content/browser/browser/components/preferences/in-content/tests/browser_filetype_dialog.js :: setup :: line 117"  data: no]
[task 2020-03-31T00:06:46.098Z] 00:06:46     INFO - Stack trace:
[task 2020-03-31T00:06:46.100Z] 00:06:46     INFO - setup@chrome://mochitests/content/browser/browser/components/preferences/in-content/tests/browser_filetype_dialog.js:117:25
[task 2020-03-31T00:06:46.100Z] 00:06:46     INFO - Tester_execTest/<@chrome://mochikit/content/browser-test.js:1062:34
[task 2020-03-31T00:06:46.100Z] 00:06:46     INFO - Tester_execTest@chrome://mochikit/content/browser-test.js:1097:11
[task 2020-03-31T00:06:46.100Z] 00:06:46     INFO - nextTest/<@chrome://mochikit/content/browser-test.js:919:14
[task 2020-03-31T00:06:46.101Z] 00:06:46     INFO - SimpleTest.waitForFocus/waitForFocusInner/focusedOrLoaded/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:918:23
[task 2020-03-31T00:06:46.101Z] 00:06:46     INFO - Leaving test bound setup
[task 2020-03-31T00:06:46.102Z] 00:06:46     INFO - Entering test bound dialogShowsCorrectContent
[task 2020-03-31T00:06:46.103Z] 00:06:46     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-03-31T00:06:46.103Z] 00:06:46     INFO - TEST-UNEXPECTED-FAIL | browser/components/preferences/in-content/tests/browser_filetype_dialog.js | Uncaught exception - at chrome://mochitests/content/browser/browser/components/preferences/in-content/tests/browser_filetype_dialog.js:135 - TypeError: can't access property "document", win is null
[task 2020-03-31T00:06:46.104Z] 00:06:46     INFO - Stack trace:
[task 2020-03-31T00:06:46.105Z] 00:06:46     INFO - dialogShowsCorrectContent@chrome://mochitests/content/browser/browser/components/preferences/in-content/tests/browser_filetype_dialog.js:135:19
[task 2020-03-31T00:06:46.105Z] 00:06:46     INFO - Tester_execTest/<@chrome://mochikit/content/browser-test.js:1062:34
[task 2020-03-31T00:06:46.106Z] 00:06:46     INFO - async*Tester_execTest@chrome://mochikit/content/browser-test.js:1097:11
[task 2020-03-31T00:06:46.107Z] 00:06:46     INFO - nextTest/<@chrome://mochikit/content/browser-test.js:919:14
[task 2020-03-31T00:06:46.107Z] 00:06:46     INFO - SimpleTest.waitForFocus/waitForFocusInner/focusedOrLoaded/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:918:23
[task 2020-03-31T00:06:46.108Z] 00:06:46     INFO - Leaving test bound dialogShowsCorrectContent
[task 2020-03-31T00:06:46.109Z] 00:06:46     INFO - GECKO(1228) | [Parent 1228, Main Thread] WARNING: 'mIndex >= Count()', file /builds/worker/checkouts/gecko/xpcom/ds/nsStringEnumerator.cpp, line 202
[task 2020-03-31T00:06:46.109Z] 00:06:46     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-03-31T00:06:46.110Z] 00:06:46     INFO - TEST-UNEXPECTED-FAIL | browser/components/preferences/in-content/tests/browser_filetype_dialog.js | test left unexpected property on window: skipNextCanClose - 
[task 2020-03-31T00:06:46.111Z] 00:06:46     INFO - GECKO(1228) | [Child 1559, Main Thread] WARNING: could not set real-time limit at process startup: file /builds/worker/checkouts/gecko/dom/ipc/ContentChild.cpp, line 1701
[task 2020-03-31T00:06:46.111Z] 00:06:46     INFO - GECKO(1228) | [Child 1559: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7f3f3b80e000 == 1 [pid = 1559] [id = {29e24471-3f0b-4069-86cc-abd4548f4c87}]
[task 2020-03-31T00:06:46.112Z] 00:06:46     INFO - GECKO(1228) | [Child 1559: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 1 (0x7f3f56a93520) [pid = 1559] [serial = 1] [outer = (nil)]
[task 2020-03-31T00:06:46.113Z] 00:06:46     INFO - GECKO(1228) | [Child 1559, Main Thread] WARNING: NS_ENSURE_TRUE(mPresShell) failed: file /builds/worker/checkouts/gecko/layout/base/nsPresContext.cpp, line 839
[task 2020-03-31T00:06:46.114Z] 00:06:46     INFO - GECKO(1228) | [Child 1559: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 2 (0x7f3f3c18d400) [pid = 1559] [serial = 2] [outer = 0x7f3f56a93520]
[task 2020-03-31T00:06:46.114Z] 00:06:46     INFO - GECKO(1228) | JavaScript error: , line 0: NS_ERROR_NOT_AVAILABLE
[task 2020-03-31T00:06:46.115Z] 00:06:46     INFO - Console message: [JavaScript Error: "NS_ERROR_NOT_AVAILABLE"]
[task 2020-03-31T00:06:46.116Z] 00:06:46     INFO - GECKO(1228) | [2020-03-31T00:06:46Z WARN  xulstore::persist] tried to remove key that isn't in the store
[task 2020-03-31T00:06:46.116Z] 00:06:46     INFO - GECKO(1228) | [2020-03-31T00:06:46Z WARN  xulstore::persist] tried to remove key that isn't in the store
[task 2020-03-31T00:06:46.117Z] 00:06:46     INFO - GECKO(1228) | [Parent 1228, Compositor] WARNING: Created child without a matching parent?: file /builds/worker/checkouts/gecko/gfx/layers/ipc/ContentCompositorBridgeParent.cpp, line 110
[task 2020-03-31T00:06:46.118Z] 00:06:46     INFO - GECKO(1228) | [Child 1559, Main Thread] WARNING: failed to allocate layer transaction: file /builds/worker/checkouts/gecko/dom/ipc/BrowserChild.cpp, line 2771
[task 2020-03-31T00:06:46.119Z] 00:06:46     INFO - GECKO(1228) | [Child 1559, Main Thread] WARNING: Fallback to BasicLayerManager: file /builds/worker/checkouts/gecko/dom/ipc/BrowserChild.cpp, line 2723
[task 2020-03-31T00:06:46.532Z] 00:06:46     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7fa95970b800 == 8 [pid = 1228] [id = {d98b7ae1-4238-4df8-b10e-9c7253cd1927}] [url = about:blank]
[task 2020-03-31T00:06:46.540Z] 00:06:46     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7fa95aa29000 == 7 [pid = 1228] [id = {fd1388a7-9bbd-49b0-bd5a-c0664cd4333c}] [url = about:blank]
[task 2020-03-31T00:06:47.058Z] 00:06:47     INFO - GECKO(1228) | ### XPCOM_MEM_BLOAT_LOG defined -- logging bloat/leaks to /tmp/tmpgaG5wz.mozrunner/runtests_leaks_tab_pid1584.log
[task 2020-03-31T00:06:47.114Z] 00:06:47     INFO - GECKO(1228) | [Child 1584, Main Thread] WARNING: No CID found when attempting to map contract ID: file /builds/worker/checkouts/gecko/xpcom/components/nsComponentManager.cpp, line 721
[task 2020-03-31T00:06:47.190Z] 00:06:47     INFO - GECKO(1228) | Couldn't convert chrome URL: chrome://branding/locale/brand.properties
[task 2020-03-31T00:06:47.274Z] 00:06:47     INFO - GECKO(1228) | [Child 1584, Main Thread] WARNING: could not set real-time limit at process startup: file /builds/worker/checkouts/gecko/dom/ipc/ContentChild.cpp, line 1701
[task 2020-03-31T00:06:47.857Z] 00:06:47     INFO - GECKO(1228) | [Child 1375: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (0x7fac05e9a000) [pid = 1375] [serial = 2] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:47.879Z] 00:06:47     INFO - GECKO(1228) | [Child 1375: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (0x7fac20793520) [pid = 1375] [serial = 1] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:48.390Z] 00:06:48     INFO - GECKO(1228) | [Child 1285: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 14 (0x7f6ce8e8a800) [pid = 1285] [serial = 4] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:48.390Z] 00:06:48     INFO - GECKO(1228) | [Child 1285: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 13 (0x7f6ceec02400) [pid = 1285] [serial = 6] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:48.391Z] 00:06:48     INFO - GECKO(1228) | [Child 1285: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 12 (0x7f6ceec06800) [pid = 1285] [serial = 10] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:48.391Z] 00:06:48     INFO - GECKO(1228) | [Child 1285: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 11 (0x7f6ce8e63c00) [pid = 1285] [serial = 2] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:48.392Z] 00:06:48     INFO - GECKO(1228) | [Child 1285: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 10 (0x7f6ceec04400) [pid = 1285] [serial = 8] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:48.480Z] 00:06:48     INFO - GECKO(1228) | [Child 1285: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 9 (0x7f6d041936f0) [pid = 1285] [serial = 3] [outer = (nil)] [url = moz-extension://63641cbe-be69-4012-8045-3110bc8c481c/_generated_background_page.html]
[task 2020-03-31T00:06:48.481Z] 00:06:48     INFO - GECKO(1228) | [Child 1285: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7f6ce8e06000 == 4 [pid = 1285] [id = {3abec770-9a55-4890-8177-7f96cf89428d}] [url = moz-extension://63641cbe-be69-4012-8045-3110bc8c481c/_generated_background_page.html]
[task 2020-03-31T00:06:49.726Z] 00:06:49     INFO - GECKO(1228) | [Child 1507: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7f7d5fc39800 == 0 [pid = 1507] [id = {8262b720-2f84-4959-ae44-5d2a656dfee8}] [url = about:blank]
[task 2020-03-31T00:06:50.932Z] 00:06:50     INFO - GECKO(1228) | [Child 1434: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7f6eca410800 == 0 [pid = 1434] [id = {3880aaef-df23-436a-9677-c5fb93747dd3}] [url = about:blank]
[task 2020-03-31T00:06:51.008Z] 00:06:51     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7fa94be39800 == 6 [pid = 1228] [id = {54e2e02d-7236-49ed-b942-9b8863c89736}] [url = about:blank]
[task 2020-03-31T00:06:51.009Z] 00:06:51     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7fa95d2dc000 == 5 [pid = 1228] [id = {086a91a4-1b6d-4c79-8e0a-c2a13e7b0afc}] [url = chrome://browser/content/browser.xhtml]
[task 2020-03-31T00:06:51.012Z] 00:06:51     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7fa95aa30800 == 4 [pid = 1228] [id = {8f065a60-8489-41b8-a6d8-535a2fc7eea3}] [url = chrome://browser/content/preferences/applicationManager.xhtml]
[task 2020-03-31T00:06:51.012Z] 00:06:51     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 21 (0x7fa967c0f000) [pid = 1228] [serial = 8] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:51.013Z] 00:06:51     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 20 (0x7fa95a726000) [pid = 1228] [serial = 14] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:51.013Z] 00:06:51     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 19 (0x7fa9536bc400) [pid = 1228] [serial = 13] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:51.014Z] 00:06:51     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7fa95342e800 == 3 [pid = 1228] [id = {04ae1c57-291b-442c-a522-67db64ac8026}] [url = about:preferences#general]
[task 2020-03-31T00:06:51.371Z] 00:06:51     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 18 (0x7fa97d797520) [pid = 1228] [serial = 5] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:51.928Z] 00:06:51     INFO - GECKO(1228) | [Child 1375: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (0x7fac0b30d800) [pid = 1375] [serial = 4] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:51.929Z] 00:06:51     INFO - GECKO(1228) | [Child 1375: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (0x7fac0b304800) [pid = 1375] [serial = 3] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:52.491Z] 00:06:52     INFO - GECKO(1228) | [Child 1285: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 8 (0x7f6ce8e7f000) [pid = 1285] [serial = 12] [outer = (nil)] [url = moz-extension://63641cbe-be69-4012-8045-3110bc8c481c/_generated_background_page.html]
[task 2020-03-31T00:06:52.639Z] 00:06:52     INFO - GECKO(1228) | [Child 1459: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (0x7f6929d8f800) [pid = 1459] [serial = 2] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:52.740Z] 00:06:52     INFO - GECKO(1228) | [Child 1459: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (0x7f6944693520) [pid = 1459] [serial = 1] [outer = (nil)] [url = about:newtab]
[task 2020-03-31T00:06:52.740Z] 00:06:52     INFO - GECKO(1228) | [Child 1459: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7f692940e000 == 0 [pid = 1459] [id = {7a7f291d-60b4-48f3-9c09-e2e3f018bcbc}] [url = about:newtab]
[task 2020-03-31T00:06:53.807Z] 00:06:53     INFO - GECKO(1228) | [Child 1507: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (0x7f7d6078f400) [pid = 1507] [serial = 2] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:53.822Z] 00:06:53     INFO - GECKO(1228) | [Child 1507: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (0x7f7d7b193520) [pid = 1507] [serial = 1] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:55.143Z] 00:06:55     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 17 (0x7fa95949e520) [pid = 1228] [serial = 20] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:55.144Z] 00:06:55     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 16 (0x7fa95949da40) [pid = 1228] [serial = 16] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:55.201Z] 00:06:55     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 15 (0x7fa95949dc10) [pid = 1228] [serial = 17] [outer = (nil)] [url = chrome://browser/content/preferences/applicationManager.xhtml]
[task 2020-03-31T00:06:55.248Z] 00:06:55     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 14 (0x7fa95949bf10) [pid = 1228] [serial = 12] [outer = (nil)] [url = about:preferences#general]
[task 2020-03-31T00:06:55.385Z] 00:06:55     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 13 (0x7fa954746c00) [pid = 1228] [serial = 21] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:55.386Z] 00:06:55     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 12 (0x7fa95ce73800) [pid = 1228] [serial = 15] [outer = (nil)] [url = about:preferences#general]
[task 2020-03-31T00:06:55.387Z] 00:06:55     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 11 (0x7fa95f8d0000) [pid = 1228] [serial = 22] [outer = (nil)] [url = chrome://browser/content/preferences/applicationManager.xhtml]
[task 2020-03-31T00:06:55.388Z] 00:06:55     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 10 (0x7fa94ea64800) [pid = 1228] [serial = 18] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:55.389Z] 00:06:55     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 9 (0x7fa94ea66000) [pid = 1228] [serial = 19] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:55.390Z] 00:06:55     INFO - GECKO(1228) | [Parent 1228: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 8 (0x7fa95ce6d400) [pid = 1228] [serial = 6] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:06:56.193Z] 00:06:56     INFO - GECKO(1228) | [Child 1559: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7f3f3b80e000 == 0 [pid = 1559] [id = {29e24471-3f0b-4069-86cc-abd4548f4c87}] [url = about:blank]
[task 2020-03-31T00:06:56.751Z] 00:06:56     INFO - GECKO(1228) | [Child 1459: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (0x7f692945a400) [pid = 1459] [serial = 3] [outer = (nil)] [url = about:newtab]
[task 2020-03-31T00:06:57.875Z] 00:06:57     INFO - GECKO(1228) | [Child 1507: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (0x7f7d5fe3f800) [pid = 1507] [serial = 3] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:07:00.738Z] 00:07:00     INFO - GECKO(1228) | [Child 1434: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (0x7f6ee5693520) [pid = 1434] [serial = 1] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:07:04.787Z] 00:07:04     INFO - GECKO(1228) | [Child 1434: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (0x7f6ecad84400) [pid = 1434] [serial = 2] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:07:06.070Z] 00:07:06     INFO - GECKO(1228) | [Child 1559: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (0x7f3f56a93520) [pid = 1559] [serial = 1] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:07:10.123Z] 00:07:10     INFO - GECKO(1228) | [Child 1559: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (0x7f3f3c18d400) [pid = 1559] [serial = 2] [outer = (nil)] [url = about:blank]
[task 2020-03-31T00:13:02.888Z] 00:13:02     INFO - GECKO(1228) | [2020-03-31T00:13:02Z WARN  rkv::backend::impl_safe::environment] Ignoring `map_size=16777216`
[task 2020-03-31T00:19:12.890Z] 00:19:12     INFO - Buffered messages finished
[task 2020-03-31T00:19:12.890Z] 00:19:12    ERROR - TEST-UNEXPECTED-TIMEOUT | browser/components/preferences/in-content/tests/browser_filetype_dialog.js | application timed out after 370 seconds with no output
```