Bug: Permafailing browser/base/content/test/performance/browser_preferences_usage.js | Should have accessed all known problematic prefs. Remaining: extensions.screenshots.disabled - Got 1, expected +0
Status: RESOLVED
Priority: P5
Resolution: FIXED
Created: 2022-10-06 03:12:20+00:00
Resolved: 2022-10-10 06:30:26+00:00

**Filed by:** ncsoregi [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=392391588&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/NuhSgAOhTP-FBjgMA8Iy1Q/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2022-10-06T02:02:13.387Z] 02:02:13     INFO - TEST-PASS | browser/base/content/test/performance/browser_preferences_usage.js | layout.reflow.showframecounts should not be accessed more than 40 times. - 1 <= 40 - 
[task 2022-10-06T02:02:13.388Z] 02:02:13     INFO - Buffered messages finished
[task 2022-10-06T02:02:13.390Z] 02:02:13     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_preferences_usage.js | Should have accessed all known problematic prefs. Remaining: extensions.screenshots.disabled - Got 1, expected +0
[task 2022-10-06T02:02:13.390Z] 02:02:13     INFO - Stack trace:
[task 2022-10-06T02:02:13.391Z] 02:02:13     INFO - chrome://mochikit/content/browser-test.js:test_is:1485
[task 2022-10-06T02:02:13.391Z] 02:02:13     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/browser_preferences_usage.js:checkPrefGetters:81
[task 2022-10-06T02:02:13.391Z] 02:02:13     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/browser_preferences_usage.js:navigate_around:296
[task 2022-10-06T02:02:13.393Z] 02:02:13     INFO - Leaving test bound navigate_around
[task 2022-10-06T02:02:13.394Z] 02:02:13     INFO - GECKO(1634) | [Parent 1634, Main Thread] WARNING: WebProgress Ignored: BrowsingContext is null or discarded: file /builds/worker/checkouts/gecko/dom/ipc/BrowserParent.cpp:3059
[task 2022-10-06T02:02:13.395Z] 02:02:13     INFO - GECKO(1634) | [Parent 1634, IPDL Background] WARNING: IPC Connection Error: [Parent][PBackgroundParent] RunMessage(msgname=PRemoteWorkerService::Msg___delete__) Channel closing: too late to send/recv, messages will be lost: file /builds/worker/checkouts/gecko/ipc/glue/MessageChannel.cpp:1883
[task 2022-10-06T02:02:13.397Z] 02:02:13     INFO - GECKO(1634) | [Child 3126: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7ff88ab3a000 == 0 [pid = 3126] [id = 0] [url = https://example.com/]
[task 2022-10-06T02:02:13.398Z] 02:02:13     INFO - GECKO(1634) | [Child 3126: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7ff8a6091bc0) [pid = 3126] [serial = 1] [outer = 0] [url = https://example.com/]
[task 2022-10-06T02:02:13.399Z] 02:02:13     INFO - GECKO(1634) | [Child 3126: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (7ff88ab3d400) [pid = 3126] [serial = 3] [outer = 0] [url = https://example.com/]
[task 2022-10-06T02:02:13.405Z] 02:02:13     INFO - GECKO(1634) | [Child 3126: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (7ff88ab3a400) [pid = 3126] [serial = 2] [outer = 0] [url = about:blank]
[task 2022-10-06T02:02:13.407Z] 02:02:13     INFO - GECKO(1634) | [Child 3126, Main Thread] WARNING: Extra shutdown CC: 'i < NORMAL_SHUTDOWN_COLLECTIONS', file /builds/worker/checkouts/gecko/xpcom/base/nsCycleCollector.cpp:3385
[task 2022-10-06T02:02:13.408Z] 02:02:13     INFO - GECKO(1634) | [Child 3126, Main Thread] WARNING: NS_ENSURE_TRUE(InitStaticMembers()) failed: file /builds/worker/workspace/obj-build/dist/include/mozilla/Preferences.h:129
[task 2022-10-06T02:02:13.410Z] 02:02:13     INFO - GECKO(1634) | [Child 3126, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4630
[task 2022-10-06T02:02:13.411Z] 02:02:13     INFO - GECKO(1634) | ### XPCOM_MEM_BLOAT_LOG defined -- logging bloat/leaks to /tmp/tmpd_hyigzw.mozrunner/runtests_leaks_tab_pid3218.log
[task 2022-10-06T02:02:13.412Z] 02:02:13     INFO - GECKO(1634) | [3218, Main Thread] WARNING: XPCOM_MEM_BLOAT_LOG is set, disabling native allocations.: file /builds/worker/checkouts/gecko/tools/profiler/core/platform.cpp:339
[task 2022-10-06T02:02:13.414Z] 02:02:13     INFO - GECKO(1634) | [Child 3218, Main Thread] WARNING: could not set real-time limit in CubebUtils::InitLibrary: file /builds/worker/checkouts/gecko/dom/media/CubebUtils.cpp:715
[task 2022-10-06T02:02:13.415Z] 02:02:13     INFO - GECKO(1634) | MEMORY STAT | vsize 3390MB | residentFast 555MB | heapAllocated 251MB
[task 2022-10-06T02:02:13.416Z] 02:02:13     INFO - TEST-OK | browser/base/content/test/performance/browser_preferences_usage.js | took 42430ms
```