Bug: Intermittent browser/base/content/test/backforward/browser_history_menu.js | Test timed out -
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2021-03-05 03:40:58+00:00
Resolved: 2021-06-22 17:02:28+00:00

**Filed by:** malexandru [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=332159356&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/LaGbhIw7SlKzSJnw5EaZXA/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2021-03-05T02:29:30.288Z] 02:29:30     INFO - GECKO(2200) | Chrome file doesn't exist: /builds/worker/workspace/build/tests/mochitest/browser/browser/base/content/test/backforward/head.js
[task 2021-03-05T02:29:30.308Z] 02:29:30     INFO - GECKO(2200) | [Child 2367: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7f5564e06000 == 1 [pid = 2367] [id = 0]
[task 2021-03-05T02:29:30.309Z] 02:29:30     INFO - GECKO(2200) | [Child 2367: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 1 (0x7f5581863ac0) [pid = 2367] [serial = 1] [outer = (nil)]
[task 2021-03-05T02:29:30.310Z] 02:29:30     INFO - GECKO(2200) | [Child 2367: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 2 (0x7f5564e0a000) [pid = 2367] [serial = 2] [outer = 0x7f5581863ac0]
[task 2021-03-05T02:29:30.513Z] 02:29:30     INFO - GECKO(2200) | ### XPCOM_MEM_BLOAT_LOG defined -- logging bloat/leaks to /tmp/tmpC3AN1q.mozrunner/runtests_leaks_tab_pid2417.log
[task 2021-03-05T02:29:30.513Z] 02:29:30     INFO - GECKO(2200) | [2417, Main Thread] WARNING: XPCOM_MEM_BLOAT_LOG is set, disabling native allocations.: file /builds/worker/checkouts/gecko/tools/profiler/core/platform.cpp:251
[task 2021-03-05T02:29:30.650Z] 02:29:30     INFO - GECKO(2200) | [Child 2367, Main Thread] WARNING: NS_ENSURE_TRUE(info) failed: file /builds/worker/checkouts/gecko/extensions/permissions/PermissionDelegateHandler.cpp:348
[task 2021-03-05T02:29:30.658Z] 02:29:30     INFO - GECKO(2200) | [Child 2367: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 3 (0x7f556af71c00) [pid = 2367] [serial = 3] [outer = 0x7f5581863ac0]
[task 2021-03-05T02:29:30.679Z] 02:29:30     INFO - GECKO(2200) | ### XPCOM_MEM_BLOAT_LOG defined -- logging bloat/leaks to /tmp/tmpC3AN1q.mozrunner/runtests_leaks_tab_pid2423.log
[task 2021-03-05T02:29:30.683Z] 02:29:30     INFO - GECKO(2200) | [2423, Main Thread] WARNING: XPCOM_MEM_BLOAT_LOG is set, disabling native allocations.: file /builds/worker/checkouts/gecko/tools/profiler/core/platform.cpp:251
[task 2021-03-05T02:29:30.686Z] 02:29:30     INFO - GECKO(2200) | [Child 2417, Main Thread] WARNING: could not set real-time limit in CubebUtils::InitLibrary: file /builds/worker/checkouts/gecko/dom/media/CubebUtils.cpp:619
[task 2021-03-05T02:29:30.701Z] 02:29:30     INFO - GECKO(2200) | ### XPCOM_MEM_BLOAT_LOG defined -- logging bloat/leaks to /tmp/tmpC3AN1q.mozrunner/runtests_leaks_tab_pid2427.log
[task 2021-03-05T02:29:30.702Z] 02:29:30     INFO - GECKO(2200) | [2427, Main Thread] WARNING: XPCOM_MEM_BLOAT_LOG is set, disabling native allocations.: file /builds/worker/checkouts/gecko/tools/profiler/core/platform.cpp:251
[task 2021-03-05T02:29:31.000Z] 02:29:31     INFO - GECKO(2200) | [Child 2423, Main Thread] WARNING: could not set real-time limit in CubebUtils::InitLibrary: file /builds/worker/checkouts/gecko/dom/media/CubebUtils.cpp:619
[task 2021-03-05T02:29:31.001Z] 02:29:31     INFO - GECKO(2200) | [Child 2427, Main Thread] WARNING: could not set real-time limit in CubebUtils::InitLibrary: file /builds/worker/checkouts/gecko/dom/media/CubebUtils.cpp:619
[task 2021-03-05T02:29:33.214Z] 02:29:33     INFO - GECKO(2200) | [Child 2256: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7f45e43c7800 == 2 [pid = 2256] [id = 1]
<...>
[task 2021-03-05T02:31:00.723Z] 02:31:00     INFO - TEST-PASS | browser/base/content/test/backforward/browser_history_menu.js | '3' item historyindex - 
[task 2021-03-05T02:31:00.724Z] 02:31:00     INFO - Buffered messages finished
[task 2021-03-05T02:31:00.724Z] 02:31:00     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/backforward/browser_history_menu.js | Test timed out - 
[task 2021-03-05T02:31:00.725Z] 02:31:00     INFO - GECKO(2200) | MEMORY STAT vsizeMaxContiguous not supported in this build configuration.
[task 2021-03-05T02:31:00.725Z] 02:31:00     INFO - GECKO(2200) | MEMORY STAT | vsize 3178MB | residentFast 317MB | heapAllocated 89MB
[task 2021-03-05T02:31:00.726Z] 02:31:00     INFO - TEST-OK | browser/base/content/test/backforward/browser_history_menu.js | took 90068ms
[task 2021-03-05T02:31:00.726Z] 02:31:00     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-03-05T02:31:00.727Z] 02:31:00     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/backforward/browser_history_menu.js | Found a tab after previous test timed out: http://example.com/2.html - 
[task 2021-03-05T02:31:00.727Z] 02:31:00     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-03-05T02:31:00.728Z] 02:31:00     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/backforward/browser_history_menu.js | Found a tab after previous test timed out: http://example.com/2.html - 
[task 2021-03-05T02:31:00.728Z] 02:31:00     INFO - GECKO(2200) | [Child 2256: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 0x7f45e43c5c00 == 1 [pid = 2256] [id = 2]
[task 2021-03-05T02:31:00.728Z] 02:31:00     INFO - GECKO(2200) | [Child 2256: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 1 (0x7f4600d63ac0) [pid = 2256] [serial = 7] [outer = (nil)]
[task 2021-03-05T02:31:00.729Z] 02:31:00     INFO - GECKO(2200) | [Child 2256: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 2 (0x7f45e43c7800) [pid = 2256] [serial = 8] [outer = 0x7f4600d63ac0]
[task 2021-03-05T02:31:00.729Z] 02:31:00     INFO - checking window state
[task 2021-03-05T02:31:00.729Z] 02:31:00     INFO - GECKO(2200) | [Parent 2200: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 11 (0x7f545355a400) [pid = 2200] [serial = 16] [outer = 0x7f545a915900]
[task 2021-03-05T02:31:00.750Z] 02:31:00     INFO - GECKO(2200) | [Parent 2200, Main Thread] WARNING: NS_ENSURE_TRUE(presShell) failed: file /builds/worker/checkouts/gecko/dom/base/nsGlobalWindowOuter.cpp:4251
[task 2021-03-05T02:31:01.007Z] 02:31:01     INFO - GECKO(2200) | [Child 2361: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7ff2ea806800 == 0 [pid = 2361] [id = 0] [url = about:blank]
[task 2021-03-05T02:31:01.168Z] 02:31:01     INFO - GECKO(2200) | [Child 2335: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7f3bf2b06000 == 0 [pid = 2335] [id = 0] [url = about:newtab]
[task 2021-03-05T02:31:01.169Z] 02:31:01     INFO - GECKO(2200) | [Child 2335: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (0x7f3c0f563e40) [pid = 2335] [serial = 1] [outer = (nil)] [url = about:newtab]
[task 2021-03-05T02:31:01.172Z] 02:31:01     INFO - GECKO(2200) | [Child 2335: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (0x7f3bf2b0e400) [pid = 2335] [serial = 3] [outer = (nil)] [url = about:newtab]
[task 2021-03-05T02:31:02.121Z] 02:31:02     INFO - GECKO(2200) | ###!!! [Parent][RunMessage] Error: Channel closing: too late to send/recv, messages will be lost
[task 2021-03-05T02:31:02.123Z] 02:31:02     INFO - GECKO(2200) | ###!!! [Parent][RunMessage] Error: Channel closing: too late to send/recv, messages will be lost
[task 2021-03-05T02:31:02.138Z] 02:31:02     INFO - GECKO(2200) | ###!!! [Parent][RunMessage] Error: Channel closing: too late to send/recv, messages will be lost
[task 2021-03-05T02:31:02.142Z] 02:31:02     INFO - GECKO(2200) | ###!!! [Parent][RunMessage] Error: Channel closing: too late to send/recv, messages will be lost
[task 2021-03-05T02:31:02.142Z] 02:31:02     INFO - GECKO(2200) | ###!!! [Parent][RunMessage] Error: Channel closing: too late to send/recv, messages will be lost
[task 2021-03-05T02:31:02.279Z] 02:31:02     INFO - GECKO(2200) | [Child 2417, Main Thread] WARNING: Extra shutdown CC: 'i < NORMAL_SHUTDOWN_COLLECTIONS', file /builds/worker/checkouts/gecko/xpcom/base/nsCycleCollector.cpp:3365
[task 2021-03-05T02:31:02.279Z] 02:31:02     INFO - GECKO(2200) | [Child 2367: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7f5564e06000 == 1 [pid = 2367] [id = 0] [url = http://example.com/2.html]
[task 2021-03-05T02:31:02.279Z] 02:31:02     INFO - GECKO(2200) | [Child 2367: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x7f556473a400 == 0 [pid = 2367] [id = 1] [url = http://example.com/2.html]
[task 2021-03-05T02:31:02.303Z] 02:31:02     INFO - GECKO(2200) | [Child 2427, Main Thread] WARNING: Extra shutdown CC: 'i < NORMAL_SHUTDOWN_COLLECTIONS', file /builds/worker/checkouts/gecko/xpcom/base/nsCycleCollector.cpp:3365
[task 2021-03-05T02:31:02.303Z] 02:31:02     INFO - GECKO(2200) | [Child 2423, Main Thread] WARNING: Extra shutdown CC: 'i < NORMAL_SHUTDOWN_COLLECTIONS', file /builds/worker/checkouts/gecko/xpcom/base/nsCycleCollector.cpp:3365
[task 2021-03-05T02:31:02.339Z] 02:31:02     INFO - GECKO(2200) | ###!!! [Child][MessageChannel] Error: (msgtype=0x6D001A,name=PNecko::Msg_CancelHTMLDNSPrefetch) Channel closing: too late to send/recv, messages will be lost
[task 2021-03-05T02:31:02.339Z] 02:31:02     INFO - GECKO(2200) | [Child 2367, Main Thread] WARNING: MsgDropped in ContentChild: file /builds/worker/checkouts/gecko/dom/ipc/ContentChild.cpp:2171```