#[markdown(off)]
Filed by: rgurzau [at] mozilla.com

https://treeherder.mozilla.org/logviewer.html#?job_id=230562343&repo=autoland

https://queue.taskcluster.net/v1/task/L23WOA0fSDi1VJt9gxElOg/runs/0/artifacts/public/logs/live_backing.log

[task 2019-02-26T17:27:35.932Z] 17:27:35 INFO - TEST-FAIL | dom/media/tests/mochitest/test_peerConnection_twoAudioVideoStreams.html | The author of the test has indicated that flaky timeouts are expected. Reason: WebRTC inherently depends on timeouts
[task 2019-02-26T17:27:35.955Z] 17:27:35 INFO - Found transceiver that should be receiving RTP: mid=0 currentDirection=sendrecv kind=audio track-id={5316a133-6d93-42b0-9999-cf16a37c7c28}
[task 2019-02-26T17:27:35.965Z] 17:27:35 INFO - Found transceiver that should be receiving RTP: mid=1 currentDirection=sendrecv kind=video track-id={b46af4c3-6853-4f17-9f73-a7c44e237fba}
[task 2019-02-26T17:27:35.988Z] 17:27:35 INFO - Buffered messages logged at 17:27:14
[task 2019-02-26T17:27:35.998Z] 17:27:35 INFO - Found transceiver that should be receiving RTP: mid=2 currentDirection=sendrecv kind=audio track-id={bb6166f6-cb97-4ada-ae0d-36412f3f9028}
[task 2019-02-26T17:27:36.028Z] 17:27:36 INFO - Found transceiver that should be receiving RTP: mid=3 currentDirection=sendrecv kind=video track-id={ae23f560-ded3-4682-bf3a-a012bb0920b1}
[task 2019-02-26T17:27:36.039Z] 17:27:36 INFO - waitForRtpFlow({5316a133-6d93-42b0-9999-cf16a37c7c28})
[task 2019-02-26T17:27:36.063Z] 17:27:36 INFO - waitForRtpFlow({b46af4c3-6853-4f17-9f73-a7c44e237fba})
[task 2019-02-26T17:27:36.064Z] 17:27:36 INFO - waitForRtpFlow({bb6166f6-cb97-4ada-ae0d-36412f3f9028})
[task 2019-02-26T17:27:36.094Z] 17:27:36 INFO - waitForRtpFlow({ae23f560-ded3-4682-bf3a-a012bb0920b1})
[task 2019-02-26T17:27:36.099Z] 17:27:36 INFO - waitForRtpFlow({a51fb4e2-571c-4553-b5c1-fceffc85286b})
[task 2019-02-26T17:27:36.118Z] 17:27:36 INFO - waitForRtpFlow({e48790b5-9c0a-4a98-992b-8d54ab586a55})
[task 2019-02-26T17:27:36.124Z] 17:27:36 INFO - waitForRtpFlow({45e3b08f-8a5d-419a-8d2d-fe957c23cdea})
[task 2019-02-26T17:27:36.136Z] 17:27:36 INFO - waitForRtpFlow({edede6b6-40a3-4464-a003-142f9de4e9a4})
[task 2019-02-26T17:27:36.166Z] 17:27:36 INFO - Element _local_{a51fb4e2-571c-4553-b5c1-fceffc85286b} has enough data.
[task 2019-02-26T17:27:36.178Z] 17:27:36 INFO - Element _local_{e48790b5-9c0a-4a98-992b-8d54ab586a55} has enough data.
[task 2019-02-26T17:27:36.197Z] 17:27:36 INFO - Element _local_{45e3b08f-8a5d-419a-8d2d-fe957c23cdea} has enough data.
[task 2019-02-26T17:27:36.203Z] 17:27:36 INFO - Element _local_{edede6b6-40a3-4464-a003-142f9de4e9a4} has enough data.
[task 2019-02-26T17:27:36.216Z] 17:27:36 INFO - Element _remote_{5316a133-6d93-42b0-9999-cf16a37c7c28} has enough data.
[task 2019-02-26T17:27:36.296Z] 17:27:36 INFO - Element _remote_{b46af4c3-6853-4f17-9f73-a7c44e237fba} has enough data.
[task 2019-02-26T17:27:36.328Z] 17:27:36 INFO - Element _remote_{bb6166f6-cb97-4ada-ae0d-36412f3f9028} has enough data.
[task 2019-02-26T17:27:36.358Z] 17:27:36 INFO - Element _remote_{ae23f560-ded3-4682-bf3a-a012bb0920b1} has enough data.
[task 2019-02-26T17:27:36.378Z] 17:27:36 INFO - Buffered messages finished
[task 2019-02-26T17:27:36.398Z] 17:27:36 INFO - TEST-UNEXPECTED-FAIL | dom/media/tests/mochitest/test_peerConnection_twoAudioVideoStreams.html | Test timed out.
[task 2019-02-26T17:27:36.407Z] 17:27:36 INFO - SimpleTest.ok@SimpleTest/SimpleTest.js:275:18
[task 2019-02-26T17:27:36.418Z] 17:27:36 INFO - reportError@SimpleTest/TestRunner.js:121:22
[task 2019-02-26T17:27:36.433Z] 17:27:36 INFO - TestRunner._checkForHangs@SimpleTest/TestRunner.js:142:7
[task 2019-02-26T17:27:36.445Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.453Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.457Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.461Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.466Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.469Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.471Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.479Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.486Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.492Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.497Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.499Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.504Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.508Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.511Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.517Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.528Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.533Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.541Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.549Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.555Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.559Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.571Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.579Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.591Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.598Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.605Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.609Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.613Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.621Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.633Z] 17:27:36 INFO - setTimeout handler*TestRunner._checkForHangs@SimpleTest/TestRunner.js:163:5
[task 2019-02-26T17:27:36.640Z] 17:27:36 INFO - GECKO(1933) | (stun/INFO) STUN-CLIENT(consent): Received response; processing
[task 2019-02-26T17:27:36.650Z] 17:27:36 INFO - GECKO(1933) | (ice/INFO) ICE(PC:1551201717164485 (id=4294967880 url=http://mochi.test:8888/tests/dom/media/tests/mochitest/test_peerConnection_twoAudioVideoStr)/STREAM(PC:1551201717164485 (id=4294967880 url=http://mochi.test:8888/tests/dom/media/tests/mochitest/test_peerConnection_twoAudioVideoStr transport-id=transport_0 - 1179f79f:7ae5bc1e40b1f0baa7a1e520fde492fd)/COMP(1): Consent refreshed
[task 2019-02-26T17:27:36.669Z] 17:27:36 INFO - GECKO(1933) | (stun/INFO) STUN-CLIENT(consent): Received response; processing

In this https://treeherder.mozilla.org/#/jobs?repo=try&revision=3d06b645e08de24d7fbf3963892a22d9f39bdf2d&selectedJob=239418083 try build, this bug shows up with bug 1532543. This intermediate should be resolved by 1509669.

Fixed by part 0 of bug 1509669.