Filed by: btara [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer.html#?job_id=314152493&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/TLF_yF5GQziIiZeFCXTNbA/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/TLF_yF5GQziIiZeFCXTNbA/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

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[task 2020-08-27T04:23:18.122Z] 04:23:18     INFO - [Parent 2400, Compositor] WARNING: Possibly dropping task posted to updater thread: file /builds/worker/checkouts/gecko/gfx/layers/apz/src/APZUpdater.cpp, line 370
[task 2020-08-27T04:23:18.166Z] 04:23:18     INFO - JavaScript error: resource:///actors/ContentSearchParent.jsm, line 631: TypeError: can't access property "addEventListener", browser is null
[task 2020-08-27T04:23:18.166Z] 04:23:18     INFO - [Parent 2400, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, nullptr) failed with result 0x804B000A (NS_ERROR_MALFORMED_URI): file /builds/worker/checkouts/gecko/extensions/permissions/Permission.cpp, line 46
[task 2020-08-27T04:23:18.166Z] 04:23:18     INFO - [Parent 2400, Main Thread] WARNING: NS_ENSURE_TRUE(principal) failed: file /builds/worker/checkouts/gecko/extensions/permissions/Permission.cpp, line 58
[task 2020-08-27T04:23:18.192Z] 04:23:18     INFO - [Parent 2400, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, nullptr) failed with result 0x804B000A (NS_ERROR_MALFORMED_URI): file /builds/worker/checkouts/gecko/extensions/permissions/Permission.cpp, line 46
[task 2020-08-27T04:23:18.193Z] 04:23:18     INFO - [Parent 2400, Main Thread] WARNING: NS_ENSURE_TRUE(principal) failed: file /builds/worker/checkouts/gecko/extensions/permissions/Permission.cpp, line 58
[task 2020-08-27T04:23:18.375Z] 04:23:18     INFO - [2020-08-27T04:23:18Z WARN  xulstore::persist] tried to remove key that isn't in the store
[task 2020-08-27T04:23:18.375Z] 04:23:18     INFO - [2020-08-27T04:23:18Z WARN  xulstore::persist] tried to remove key that isn't in the store
[task 2020-08-27T04:23:18.437Z] 04:23:18     INFO - REFTEST TEST-KNOWN-FAIL | layout/reftests/printing/test-print-single-page.html print layout/reftests/printing/test-print-single-page-noref.html | Expected number of pages: 2, got 1
[task 2020-08-27T04:23:18.437Z] 04:23:18     INFO - REFTEST TEST-END | layout/reftests/printing/test-print-single-page.html print layout/reftests/printing/test-print-single-page-noref.html
[task 2020-08-27T04:23:18.437Z] 04:23:18     INFO - REFTEST TEST-END | layout/reftests/printing/test-print-single-page.html print layout/reftests/printing/test-print-single-page-noref.html
[task 2020-08-27T04:23:18.459Z] 04:23:18     INFO - REFTEST TEST-UNEXPECTED-FAIL | layout/reftests/printing/test-print-single-page.html print layout/reftests/printing/test-print-single-page-noref.html | assertion count 1 is more than expected 0 assertions
[task 2020-08-27T04:23:18.459Z] 04:23:18     INFO - REFTEST TEST-START | layout/reftests/printing/test-async-print.html print layout/reftests/printing/test-text-ref.html
[task 2020-08-27T04:23:18.459Z] 04:23:18     INFO - REFTEST TEST-LOAD | file:///Users/cltbld/tasks/task_1598495598/build/tests/reftest/tests/layout/reftests/printing/test-async-print.html | 7 / 11 (63%)
[task 2020-08-27T04:23:18.513Z] 04:23:18  WARNING - REFTEST WARNING | [CONTENT] MozInvalidateEvent didn't invalidate
[task 2020-08-27T04:23:18.548Z] 04:23:18     INFO - [Parent 2400, Main Thread] WARNING: Caller should supply a printer name.: file /builds/worker/checkouts/gecko/widget/nsPrintSettingsService.cpp, line 995
[task 2020-08-27T04:23:18.553Z] 04:23:18     INFO - [Child 2405, Main Thread] WARNING: Caller should supply a printer name.: file /builds/worker/checkouts/gecko/widget/nsPrintSettingsService.cpp, line 995
[task 2020-08-27T04:23:18.557Z] 04:23:18     INFO - [Parent 2400, Main Thread] WARNING: '!browserDOMWin', file /builds/worker/checkouts/gecko/dom/ipc/ContentParent.cpp, line 5045
[task 2020-08-27T04:23:18.592Z] 04:23:18     INFO - [Parent 2400, Main Thread] WARNING: NS_ENSURE_TRUE(rootFrame) failed: file /builds/worker/checkouts/gecko/dom/base/nsGlobalWindowOuter.cpp, line 4262
[task 2020-08-27T04:23:18.789Z] 04:23:18     INFO - [2020-08-27T04:23:18Z WARN  webrender_bindings::bindings] Could not find symbol "glBlendBarrierKHR" by glcontext
[task 2020-08-27T04:23:18.789Z] 04:23:18     INFO - [2020-08-27T04:23:18Z WARN  webrender_bindings::bindings] Could not find symbol "glColorP3ui" by glcontext
[task 2020-08-27T04:23:18.789Z] 04:23:18     INFO - [2020-08-27T04:23:18Z WARN  webrender_bindings::bindings] Could not find symbol "glColorP3uiv" by glcontext
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