Filed by: rmaries [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer.html#?job_id=254513745&repo=autoland
Full log: https://queue.taskcluster.net/v1/task/WwVxlTqpRHu-1HhP6YbruQ/runs/0/artifacts/public/logs/live_backing.log

[task 2019-07-03T01:28:13.957Z] 01:28:13 INFO - TEST-START | /media-source/mediasource-seek-during-pending-seek.html
[task 2019-07-03T01:28:13.965Z] 01:28:13 INFO - Closing window 2147483795
[task 2019-07-03T01:28:44.375Z] 01:28:44 INFO -
[task 2019-07-03T01:28:44.375Z] 01:28:44 INFO - TEST-PASS | /media-source/mediasource-seek-during-pending-seek.html | Test seeking to a new location before transitioning beyond HAVE_METADATA.
[task 2019-07-03T01:28:44.375Z] 01:28:44 INFO - TEST-UNEXPECTED-TIMEOUT | /media-source/mediasource-seek-during-pending-seek.html | Test seeking to a new location during a pending seek. - Test timed out
[task 2019-07-03T01:28:44.596Z] 01:28:44 INFO - TEST-ERROR | /media-source/mediasource-seek-during-pending-seek.html | took 30639ms
[task 2019-07-03T01:28:45.345Z] 01:28:45 INFO - Closing logging queue
[task 2019-07-03T01:28:45.345Z] 01:28:45 INFO - queue closed
[task 2019-07-03T01:28:45.362Z] 01:28:45 INFO - Setting up ssl
[task 2019-07-03T01:28:45.377Z] 01:28:45 INFO - certutil |
[task 2019-07-03T01:28:45.393Z] 01:28:45 INFO - certutil |
[task 2019-07-03T01:28:45.408Z] 01:28:45 INFO - certutil |
[task 2019-07-03T01:28:45.408Z] 01:28:45 INFO - Certificate Nickname Trust Attributes
[task 2019-07-03T01:28:45.408Z] 01:28:45 INFO - SSL,S/MIME,JAR/XPI
[task 2019-07-03T01:28:45.409Z] 01:28:45 INFO -
[task 2019-07-03T01:28:45.409Z] 01:28:45 INFO - web-platform-tests CT,,
[task 2019-07-03T01:28:45.409Z] 01:28:45 INFO -
[task 2019-07-03T01:28:47.157Z] 01:28:47 INFO - adb Granting important runtime permissions to org.mozilla.geckoview.test
[task 2019-07-03T01:28:48.411Z] 01:28:48 INFO - adb launch_application: am start -W -n org.mozilla.geckoview.test/org.mozilla.geckoview.test.TestRunnerActivity -a android.intent.action.MAIN --es env9 MOZ_CRASHREPORTER_NO_REPORT=1 --es env8 MOZ_DISABLE_NONLOCAL_CONNECTIONS=1 --es args "-no-remote -profile /sdcard/tests/profile --marionette about:blank" --es env3 MOZ_HIDE_RESULTS_TABLE=1 --es env2 R_LOG_VERBOSE=1 --es env1 MOZ_WEBRENDER=0 --es env0 MOZ_CRASHREPORTER=1 --es env7 R_LOG_DESTINATION=stderr --es env6 MOZ_CRASHREPORTER_SHUTDOWN=1 --es env5 MOZ_LOG=signaling:3,mtransport:4,DataChannel:4,jsep:4 --es env4 STYLO_THREADS=4 --ez use_multiprocess True --es env11 R_LOG_LEVEL=6 --es env10 MOZ_PROCESS_LOG=/tmp/tmp2HplWtpidlog
[task 2019-07-03T01:28:50.352Z] 01:28:50 INFO - Starting runner

This seems to be a late regression of bug 1558851

Started from this merge https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?changeset=f2bacc7bfee31ac349cc418c305cb7571fb17515

Treeherder link: https://treeherder.mozilla.org/#/jobs?repo=mozilla-inbound&resultStatus=pending%2Crunning%2Ctestfailed%2Cbusted%2Cexception&searchStr=wpt17&fromchange=f9bf5e4b0b4f48302d560afb5307d57fbbab7c73&selectedJob=254911657

Hi Joel, does this need a time increase or should it be disabled?

here is data from a passing one:
[task 2019-07-07T11:45:03.465Z] 11:45:03 INFO - TEST-START | /media-source/mediasource-seek-during-pending-seek.html
[task 2019-07-07T11:45:03.465Z] 11:45:03 INFO - Closing window 2147483801
[task 2019-07-07T11:45:04.411Z] 11:45:04 INFO - ..
[task 2019-07-07T11:45:04.411Z] 11:45:04 INFO - TEST-ERROR | /media-source/mediasource-seek-during-pending-seek.html | took 949ms

and here is what we have on a failing one:
[task 2019-07-07T05:07:24.548Z] 05:07:24 INFO - TEST-START | /media-source/mediasource-seek-during-pending-seek.html
[task 2019-07-07T05:07:24.557Z] 05:07:24 INFO - Closing window 2147483797
[task 2019-07-07T05:07:55.232Z] 05:07:55 INFO -
[task 2019-07-07T05:07:55.232Z] 05:07:55 INFO - TEST-PASS | /media-source/mediasource-seek-during-pending-seek.html | Test seeking to a new location before transitioning beyond HAVE_METADATA.
[task 2019-07-07T05:07:55.232Z] 05:07:55 INFO - TEST-UNEXPECTED-TIMEOUT | /media-source/mediasource-seek-during-pending-seek.html | Test seeking to a new location during a pending seek. - Test timed out
[task 2019-07-07T05:07:55.449Z] 05:07:55 INFO - TEST-ERROR | /media-source/mediasource-seek-during-pending-seek.html | took 30901ms

the failing case timed out in 30 seconds- the normal cases errors out in 1 second. I don't I suspect there is something else wrong here, please disable this test case.

https://hg.mozilla.org/mozilla-central/rev/963d1914038f

I'm re-enabling this over in bug 1507193. Haven't seen the frequency that seemed to be the case here, but we'll see: https://treeherder.mozilla.org/#/jobs?repo=try&revision=b35eab2170f644a680e15964b01bfb98f23affd1