Filed by: ncsoregi [at] mozilla.com https://treeherder.mozilla.org/logviewer.html#?job_id=169482611&repo=autoland https://queue.taskcluster.net/v1/task/MAES4th-RlC6fPYDUccjew/runs/0/artifacts/public/logs/live_backing.log https://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://queue.taskcluster.net/v1/task/MAES4th-RlC6fPYDUccjew/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1 [task 2018-03-21T16:58:07.226Z] 16:58:07 INFO - TEST-START | /css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-basic-textarea-horiz-001.xhtml [task 2018-03-21T16:58:07.228Z] 16:58:07 INFO - PID 8390 | 1521651487226 Marionette INFO Testing http://web-platform.test:8000/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-basic-textarea-horiz-001.xhtml == http://web-platform.test:8000/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-basic-textarea-horiz-001-ref.xhtml [task 2018-03-21T16:58:07.331Z] 16:58:07 INFO - PID 8390 | 1521651487328 Marionette INFO Found 576 pixels different, maximum difference per channel 17 [task 2018-03-21T16:58:07.372Z] 16:58:07 INFO - TEST-UNEXPECTED-FAIL | /css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-basic-textarea-horiz-001.xhtml | Testing http://web-platform.test:8000/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-basic-textarea-horiz-001.xhtml == http://web-platform.test:8000/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-basic-textarea-horiz-001-ref.xhtml [task 2018-03-21T16:58:07.379Z] 16:58:07 INFO - REFTEST IMAGE 1 (TEST): 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 [task 2018-03-21T16:58:07.386Z] 16:58:07 INFO - REFTEST IMAGE 2 (REFERENCE): 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 [task 2018-03-21T16:58:07.392Z] 16:58:07 INFO - TEST-INFO took 130ms [task 2018-03-21T16:58:07.610Z] 16:58:07 INFO - PID 8390 | *** UTM:SVC TimerManager:registerTimer called after profile-before-change notification. Ignoring timer registration for id: telemetry_modules_ping [task 2018-03-21T16:58:07.873Z] 16:58:07 INFO - Browser exited with return code 0 [task 2018-03-21T16:58:07.874Z] 16:58:07 WARNING - u'runner_teardown': () [task 2018-03-21T16:58:07.896Z] 16:58:07 INFO - Setting up ssl [task 2018-03-21T16:58:07.924Z] 16:58:07 INFO - certutil | [task 2018-03-21T16:58:07.952Z] 16:58:07 INFO - certutil | [task 2018-03-21T16:58:07.973Z] 16:58:07 INFO - certutil | [task 2018-03-21T16:58:07.973Z] 16:58:07 INFO - Certificate Nickname Trust Attributes [task 2018-03-21T16:58:07.974Z] 16:58:07 INFO - SSL,S/MIME,JAR/XPI [task 2018-03-21T16:58:07.974Z] 16:58:07 INFO - [task 2018-03-21T16:58:07.974Z] 16:58:07 INFO - web-platform-tests CT,, [task 2018-03-21T16:58:07.974Z] 16:58:07 INFO - [task 2018-03-21T16:58:07.990Z] 16:58:07 INFO - Application command: /builds/worker/workspace/build/application/firefox/firefox --marionette about:blank -profile /tmp/tmpbgZD5p.mozrunner [task 2018-03-21T16:58:08.006Z] 16:58:08 INFO - Starting runner [task 2018-03-21T16:58:08.560Z] 16:58:08 INFO - PID 8693 | ATTENTION: default value of option force_s3tc_enable overridden by environment.

The mismatching pixels are all on the resizer slashes at the bottom-right edge of the textarea elements. The resizer is just a darker shade of gray in the testcase, as compared to the reference case. In the testcase, the color channels on these resizer-corners are all between 237 and 242, e.g. rgb(242,242,242), whereas in the reference case they're all 247, rgb(247,247,247). This is a bit mysterious, but I think it's the sort of thing that could be caused by a focus difference (e.g. maybe from a system popup appearing at an inopportune time or some other similar random event). If it continues to happen, we could easily avoid it in this test by giving these textareas style="resize:none" (which removes the resizer thumbs).

(Also note that the failure link in comment 0 is for linux64-qr, and I just turned on web-platform-tests on linux64-qr yesterday. So this might be an intermittent failure that didn't show up in my try pushes and that I therefore didn't annotate).

This seems specific to linux64-qr, moving component.

Comment on attachment 8962804 [details] Bug 1447733 - Disable high-frequency intermittent. https://reviewboard.mozilla.org/r/231654/#review237200

Pushed by kgupta@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/a5080ec55122 Disable high-frequency intermittent. r=jrmuizel