webaudio/silence-after-playback.html [ Failure Timeout Pass ] This test was passing fine until r234983 when it started failing sometimes because of a different audio output than expected. Since r235142 it started to timeout as well quite often. The expected audio can be checked here: https://build.webkit.org/results/GTK%20Linux%2064-bit%20Release%20(Tests)/r235732%20(8061)/webaudio/silence-after-playback-expected.wav and the result is here: https://build.webkit.org/results/GTK%20Linux%2064-bit%20Release%20(Tests)/r235732%20(8061)/webaudio/silence-after-playback-actual.wav And if you check them, it seems that the problem is that we are playing the sound on loop: the expected has a sound and then silence, and the actual has the sound played 3 times with no silence, seems that it's player in loop instead of just once.
Ah, in this case there's also some content in stderr that says "failed to create drawable" which may help to explain the reason of the timeout.
*** This bug has been marked as a duplicate of bug 189349 ***