Bug: Intermittent TV browser/components/places/tests/browser/browser_drag_bookmarks_on_toolbar.js | Found node on toolbar - Didn't expect null, but got it
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2021-05-18 19:55:26+00:00
Resolved: 2021-06-15 17:04:15+00:00

**Filed by:** malexandru [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=340050491&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/MojBCZyrT3mqVUdfLKBlpA/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/MojBCZyrT3mqVUdfLKBlpA/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

---
```
[task 2021-05-18T18:04:41.089Z] 18:04:41     INFO - TEST-START | browser/components/places/tests/browser/browser_drag_bookmarks_on_toolbar.js
[task 2021-05-18T18:04:41.165Z] 18:04:41     INFO - GECKO(22852) | [2021-05-18T18:04:41Z WARN  webrender::device::gl] Attribute VertexAttribute { name: "aUvRect1", count: 4, kind: F32 } is not found in the shader composite. Expected at 6, found at -1
[task 2021-05-18T18:04:41.165Z] 18:04:41     INFO - GECKO(22852) | [2021-05-18T18:04:41Z WARN  webrender::device::gl] Attribute VertexAttribute { name: "aUvRect2", count: 4, kind: F32 } is not found in the shader composite. Expected at 7, found at -1
[task 2021-05-18T18:04:41.165Z] 18:04:41     INFO - GECKO(22852) | [2021-05-18T18:04:41Z WARN  webrender::device::gl] Attribute VertexAttribute { name: "aColor", count: 4, kind: F32 } is not found in the shader composite. Expected at 3, found at -1
[task 2021-05-18T18:04:41.165Z] 18:04:41     INFO - GECKO(22852) | [2021-05-18T18:04:41Z WARN  webrender::device::gl] Attribute VertexAttribute { name: "aUvRect1", count: 4, kind: F32 } is not found in the shader composite. Expected at 6, found at -1
[task 2021-05-18T18:04:41.165Z] 18:04:41     INFO - GECKO(22852) | [2021-05-18T18:04:41Z WARN  webrender::device::gl] Attribute VertexAttribute { name: "aUvRect2", count: 4, kind: F32 } is not found in the shader composite. Expected at 7, found at -1
[task 2021-05-18T18:04:41.281Z] 18:04:41     INFO - TEST-INFO | started process screentopng
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - TEST-INFO | screentopng: exit 0
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - Buffered messages logged at 18:04:41
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - Entering test bound setup
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - Global property added while loading chrome://browser/content/places/browserPlacesViews.js: PlacesViewBase
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - Leaving test bound setup
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - Entering test bound test_drag_folder_on_toolbar
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - Buffered messages finished
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - TEST-UNEXPECTED-FAIL | browser/components/places/tests/browser/browser_drag_bookmarks_on_toolbar.js | Found node on toolbar - Didn't expect null, but got it
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - Stack trace:
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - chrome://mochikit/content/browser-test.js:test_isnot:1382
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - chrome://mochitests/content/browser/browser/components/places/tests/browser/browser_drag_bookmarks_on_toolbar.js:test_drag_folder_on_toolbar:193
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - TEST-UNEXPECTED-FAIL | browser/components/places/tests/browser/browser_drag_bookmarks_on_toolbar.js | Uncaught exception - at chrome://mochitests/content/browser/browser/components/places/tests/browser/browser_drag_bookmarks_on_toolbar.js:196 - TypeError: can't access property "_placesNode", element is null
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - Stack trace:
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - test_drag_folder_on_toolbar@chrome://mochitests/content/browser/browser/components/places/tests/browser/browser_drag_bookmarks_on_toolbar.js:196:1
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - Leaving test bound test_drag_folder_on_toolbar
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - Entering test bound test_drag_bookmark_on_toolbar
[task 2021-05-18T18:04:41.688Z] 18:04:41     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-05-18T18:04:41.689Z] 18:04:41     INFO - TEST-UNEXPECTED-FAIL | browser/components/places/tests/browser/browser_drag_bookmarks_on_toolbar.js | Found node on toolbar - Didn't expect null, but got it
[task 2021-05-18T18:04:41.689Z] 18:04:41     INFO - Stack trace:
[task 2021-05-18T18:04:41.689Z] 18:04:41     INFO - chrome://mochikit/content/browser-test.js:test_isnot:1382
[task 2021-05-18T18:04:41.690Z] 18:04:41     INFO - chrome://mochitests/content/browser/browser/components/places/tests/browser/browser_drag_bookmarks_on_toolbar.js:test_drag_bookmark_on_toolbar:229
[task 2021-05-18T18:04:41.690Z] 18:04:41     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-05-18T18:04:41.691Z] 18:04:41     INFO - TEST-UNEXPECTED-FAIL | browser/components/places/tests/browser/browser_drag_bookmarks_on_toolbar.js | Uncaught exception - at chrome://mochitests/content/browser/browser/components/places/tests/browser/browser_drag_bookmarks_on_toolbar.js:232 - TypeError: can't access property "_placesNode", element is null
[task 2021-05-18T18:04:41.691Z] 18:04:41     INFO - Stack trace:
[task 2021-05-18T18:04:41.691Z] 18:04:41     INFO - test_drag_bookmark_on_toolbar@chrome://mochitests/content/browser/browser/components/places/tests/browser/browser_drag_bookmarks_on_toolbar.js:232:1
[task 2021-05-18T18:04:41.693Z] 18:04:41     INFO - Leaving test bound test_drag_bookmark_on_toolbar
[task 2021-05-18T18:04:41.693Z] 18:04:41     INFO - GECKO(22852) | MEMORY STAT vsizeMaxContiguous not supported in this build configuration.
[task 2021-05-18T18:04:41.694Z] 18:04:41     INFO - GECKO(22852) | MEMORY STAT | vsize 3204MB | residentFast 487MB | heapAllocated 210MB
[task 2021-05-18T18:04:41.694Z] 18:04:41     INFO - TEST-OK | browser/components/places/tests/browser/browser_drag_bookmarks_on_toolbar.js | took 256ms
[task 2021-05-18T18:04:41.694Z] 18:04:41     INFO - GECKO(22852) | [Child 22929: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7fb5fd1c9000 == 2 [pid = 22929] [id = 1]
[task 2021-05-18T18:04:41.695Z] 18:04:41     INFO - GECKO(22852) | [Child 22929: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 5 (7fb619a64c80) [pid = 22929] [serial = 5] [outer = 0]
[task 2021-05-18T18:04:41.695Z] 18:04:41     INFO - GECKO(22852) | [Child 22929: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 6 (7fb5fd1ca000) [pid = 22929] [serial = 6] [outer = 7fb619a64c80]
[task 2021-05-18T18:04:41.696Z] 18:04:41     INFO - GECKO(22852) | [2021-05-18T18:04:41Z WARN  webrender::device::gl] Cropping texture upload Rect(0x1 at (0, 0)) to None
[task 2021-05-18T18:04:41.696Z] 18:04:41     INFO - GECKO(22852) | [2021-05-18T18:04:41Z WARN  webrender::device::gl] Cropping texture upload Rect(0x1 at (0, 0)) to None
[task 2021-05-18T18:04:41.696Z] 18:04:41     INFO - GECKO(22852) | [2021-05-18T18:04:41Z WARN  webrender::device::gl] Cropping texture upload Rect(0x1 at (0, 0)) to None
[task 2021-05-18T18:04:41.697Z] 18:04:41     INFO - checking window state
[task 2021-05-18T18:04:41.711Z] 18:04:41     INFO - GECKO(22852) | [Parent 22852: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 12 (7f38b7af4c00) [pid = 22852] [serial = 12] [outer = 7f38cb223e40]
[task 2021-05-18T18:04:41.712Z] 18:04:41     INFO - GECKO(22852) | [Child 22983, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80040111 (NS_ERROR_NOT_AVAILABLE): file /builds/worker/checkouts/gecko/caps/BasePrincipal.cpp:1328
[task 2021-05-18T18:04:41.715Z] 18:04:41     INFO - GECKO(22852) | [Parent 22852, Main Thread] WARNING: NS_ENSURE_TRUE(presShell) failed: file /builds/worker/checkouts/gecko/dom/base/nsGlobalWindowOuter.cpp:4243
[task 2021-05-18T18:04:41.952Z] 18:04:41     INFO - GECKO(22852) | [Child 22989: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f5a72ec8c00 == 0 [pid = 22989] [id = 0] [url = about:blank]
[task 2021-05-18T18:04:42.028Z] 18:04:42     INFO - GECKO(22852) | [Child 22929: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7fb6033bdc00 == 1 [pid = 22929] [id = 0] [url = about:blank]
[task 2021-05-18T18:04:42.109Z] 18:04:42     INFO - GECKO(22852) | [Child 22929: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 5 (7fb6033c6000) [pid = 22929] [serial = 3] [outer = 0] [url = about:blank]
[task 2021-05-18T18:04:42.109Z] 18:04:42     INFO - GECKO(22852) | [Child 22929: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 4 (7fb6033bec00) [pid = 22929] [serial = 2] [outer = 0] [url = about:blank]
[task 2021-05-18T18:04:42.197Z] 18:04:42     INFO - GECKO(22852) | [Child 22929: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (7fb619a64200) [pid = 22929] [serial = 1] [outer = 0] [url = about:blank]
[task 2021-05-18T18:04:42.233Z] 18:04:42     INFO - GECKO(22852) | [Child 22983, Main Thread] WARNING: NS_ENSURE_TRUE(!mHasOrHasHadOwnerWindow || mOwnerWindow) failed: file /builds/worker/checkouts/gecko/dom/events/DOMEventTargetHelper.cpp:327
[task 2021-05-18T18:04:42.389Z] 18:04:42     INFO - GECKO(22852) | [Child 22983: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7f1367ab7400) [pid = 22983] [serial = 2] [outer = 0] [url = about:blank]
[task 2021-05-18T18:04:42.436Z] 18:04:42     INFO - GECKO(22852) | [Child 22951: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 14 (7febf54c9400) [pid = 22951] [serial = 10] [outer = 0] [url = about:blank]
[task 2021-05-18T18:04:42.437Z] 18:04:42     INFO - GECKO(22852) | [Child 22951: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 13 (7febf54c7400) [pid = 22951] [serial = 8] [outer = 0] [url = about:blank]
[task 2021-05-18T18:04:42.437Z] 18:04:42     INFO - GECKO(22852) | [Child 22951: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 12 (7febfb5a6400) [pid = 22951] [serial = 6] [outer = 0] [url = about:blank]
[task 2021-05-18T18:04:42.438Z] 18:04:42     INFO - GECKO(22852) | [Child 22951: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 11 (7febfb5a4000) [pid = 22951] [serial = 4] [outer = 0] [url = about:blank]
[task 2021-05-18T18:04:42.438Z] 18:04:42     INFO - GECKO(22852) | [Child 22951: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 10 (7febfb59e400) [pid = 22951] [serial = 2] [outer = 0] [url = about:blank]
[task 2021-05-18T18:04:42.539Z] 18:04:42     INFO - GECKO(22852) | [Child 22983: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f1367ab1000 == 0 [pid = 22983] [id = 0] [url = about:newtab]
[task 2021-05-18T18:04:42.540Z] 18:04:42     INFO - GECKO(22852) | [Child 22983: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (7f137e164e40) [pid = 22983] [serial = 1] [outer = 0] [url = about:newtab]
[task 2021-05-18T18:04:42.540Z] 18:04:42     INFO - GECKO(22852) | [Child 22951: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7febfb5a5000 == 4 [pid = 22951] [id = 2] [url = moz-extension://2a2933f8-1e61-4c00-b1dc-b6c1d108138b/_generated_background_page.html]
[task 2021-05-18T18:04:42.541Z] 18:04:42     INFO - GECKO(22852) | [Child 22951: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 9 (7febfb584e40) [pid = 22951] [serial = 5] [outer = 0] [url = moz-extension://2a2933f8-1e61-4c00-b1dc-b6c1d108138b/_generated_background_page.html]
[task 2021-05-18T18:04:43.739Z] 18:04:43     INFO - GECKO(22852) | [2021-05-18T18:04:43Z WARN  webrender::device::gl] Missing optimized shader source for gpu_cache_update
[task 2021-05-18T18:04:43.801Z] 18:04:43     INFO - GECKO(22852) | [Child 22929: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7fb5fd1c7800) [pid = 22929] [serial = 4] [outer = 0] [url = about:blank]
[task 2021-05-18T18:04:43.829Z] 18:04:43     INFO - GECKO(22852) | [Child 22983: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (7f1367abdc00) [pid = 22983] [serial = 3] [outer = 0] [url = about:newtab]
[task 2021-05-18T18:04:43.965Z] 18:04:43     INFO - GECKO(22852) | [Child 22989: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (7f5a72ecf800) [pid = 22989] [serial = 2] [outer = 0] [url = about:blank]
[task 2021-05-18T18:04:43.968Z] 18:04:43     INFO - GECKO(22852) | [Child 22989: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (7f5a89564ac0) [pid = 22989] [serial = 1] [outer = 0] [url = about:blank]
[task 2021-05-18T18:04:44.004Z] 18:04:44     INFO - GECKO(22852) | [2021-05-18T18:04:43Z WARN  webrender::device::gl] Missing optimized shader source for gpu_cache_update
[task 2021-05-18T18:04:44.044Z] 18:04:44     INFO - GECKO(22852) | [Child 22951: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 8 (7febf4a7d800) [pid = 22951] [serial = 13] [outer = 0] [url = moz-extension://2a2933f8-1e61-4c00-b1dc-b6c1d108138b/_generated_background_page.html]
[task 2021-05-18T18:04:44.145Z] 18:04:44     INFO - GECKO(22852) | [Parent 22852: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 11 (7f38bfa39400) [pid = 22852] [serial = 8] [outer = 0] [url = about:blank]
[task 2021-05-18T18:04:44.161Z] 18:04:44     INFO - GECKO(22852) | ###!!! [Parent][RunMessage] Error: Channel closing: too late to send/recv, messages will be lost
[task 2021-05-18T18:04:44.209Z] 18:04:44     INFO - GECKO(22852) | [Child 23107, Main Thread] WARNING: Extra shutdown CC: 'i < NORMAL_SHUTDOWN_COLLECTIONS', file /builds/worker/checkouts/gecko/xpcom/base/nsCycleCollector.cpp:3357
[task 2021-05-18T18:04:44.233Z] 18:04:44     INFO - GECKO(22852) | [Child 22992, Main Thread] WARNING: Extra shutdown CC: 'i < NORMAL_SHUTDOWN_COLLECTIONS', file /builds/worker/checkouts/gecko/xpcom/base/nsCycleCollector.cpp:3357
[task 2021-05-18T18:04:44.236Z] 18:04:44     INFO - GECKO(22852) | [Child 23107, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4442
[task 2021-05-18T18:04:44.272Z] 18:04:44     INFO - GECKO(22852) | [Child 22992, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4442
[task 2021-05-18T18:04:45.095Z] 18:04:45     INFO - GECKO(22852) | Completed ShutdownLeaks collections in process 22929
[task 2021-05-18T18:04:45.123Z] 18:04:45     INFO - GECKO(22852) | Completed ShutdownLeaks collections in process 22989
[task 2021-05-18T18:04:45.150Z] 18:04:45     INFO - GECKO(22852) | Completed ShutdownLeaks collections in process 22983
[task 2021-05-18T18:04:45.590Z] 18:04:45     INFO - GECKO(22852) | Completed ShutdownLeaks collections in process 22951
[task 2021-05-18T18:04:46.160Z] 18:04:46     INFO - GECKO(22852) | [Parent 22852: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 10 (7f38d015dc00) [pid = 22852] [serial = 6] [outer = 0] [url = about:blank]
[task 2021-05-18T18:04:46.778Z] 18:04:46     INFO - GECKO(22852) | [Parent 22852: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 11 (7f38b7af0400) [pid = 22852] [serial = 13] [outer = 7f38cb223e40]
[task 2021-05-18T18:04:46.928Z] 18:04:46     INFO - GECKO(22852) | ### XPCOM_MEM_BLOAT_LOG defined -- logging bloat/leaks to /tmp/tmpOuBV8q.mozrunner/runtests_leaks_tab_pid23128.log
[task 2021-05-18T18:04:46.928Z] 18:04:46     INFO - GECKO(22852) | [23128, Main Thread] WARNING: XPCOM_MEM_BLOAT_LOG is set, disabling native allocations.: file /builds/worker/checkouts/gecko/tools/profiler/core/platform.cpp:254
[task 2021-05-18T18:04:46.958Z] 18:04:46     INFO - GECKO(22852) | ### XPCOM_MEM_BLOAT_LOG defined -- logging bloat/leaks to /tmp/tmpOuBV8q.mozrunner/runtests_leaks_tab_pid23132.log
[task 2021-05-18T18:04:46.958Z] 18:04:46     INFO - GECKO(22852) | [23132, Main Thread] WARNING: XPCOM_MEM_BLOAT_LOG is set, disabling native allocations.: file /builds/worker/checkouts/gecko/tools/profiler/core/platform.cpp:254
[task 2021-05-18T18:04:47.036Z] 18:04:47     INFO - GECKO(22852) | [Child 23128, Main Thread] WARNING: could not set real-time limit in CubebUtils::InitLibrary: file /builds/worker/checkouts/gecko/dom/media/CubebUtils.cpp:619
[task 2021-05-18T18:04:47.092Z] 18:04:47     INFO - GECKO(22852) | ### XPCOM_MEM_BLOAT_LOG defined -- logging bloat/leaks to /tmp/tmpOuBV8q.mozrunner/runtests_leaks_tab_pid23146.log
[task 2021-05-18T18:04:47.093Z] 18:04:47     INFO - GECKO(22852) | [23146, Main Thread] WARNING: XPCOM_MEM_BLOAT_LOG is set, disabling native allocations.: file /builds/worker/checkouts/gecko/tools/profiler/core/platform.cpp:254
[task 2021-05-18T18:04:47.094Z] 18:04:47     INFO - GECKO(22852) | [Child 23132, Main Thread] WARNING: could not set real-time limit in CubebUtils::InitLibrary: file /builds/worker/checkouts/gecko/dom/media/CubebUtils.cpp:619
[task 2021-05-18T18:04:47.230Z] 18:04:47     INFO - GECKO(22852) | [Child 23146, Main Thread] WARNING: could not set real-time limit in CubebUtils::InitLibrary: file /builds/worker/checkouts/gecko/dom/media/CubebUtils.cpp:619
[task 2021-05-18T18:04:49.426Z] 18:04:49     INFO - GECKO(22852) | [Parent 22852: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 10 (7f38b7af4c00) [pid = 22852] [serial = 12] [outer = 0] [url = about:blank]
[task 2021-05-18T18:04:50.030Z] 18:04:50     INFO - GECKO(22852) | Completed ShutdownLeaks collections in process 22852
[task 2021-05-18T18:04:50.031Z] 18:04:50     INFO - TEST-START | Shutdown```