https://uberchromegw.corp.google.com/i/chromium.webkit/builders/WebKit%20Linux%20Trusty%20Leak/builds/2070

12:15:36.587 28243 killed pid 28247
12:15:36.587 28243 worker/0 http/tests/media/video-play-stall.html output stderr lines:
12:15:36.588 28243   ALSA lib confmisc.c:768:(parse_card) cannot find card '0'
12:15:36.588 28243   ALSA lib conf.c:4248:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory
12:15:36.588 28243   ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
12:15:36.588 28243   ALSA lib conf.c:4248:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
12:15:36.588 28243   ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name
12:15:36.588 28243   ALSA lib conf.c:4248:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
12:15:36.588 28243   ALSA lib conf.c:4727:(snd_config_expand) Evaluate error: No such file or directory
12:15:36.588 28243   ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM default
12:15:36.588 28243   [28247:28358:0206/121506.635201:2785036281:WARNING:alsa_util.cc(24)] PcmOpen: default,No such file or directory
12:15:36.588 28243   ALSA lib confmisc.c:768:(parse_card) cannot find card '0'
12:15:36.588 28243   ALSA lib conf.c:4248:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory
12:15:36.588 28243   ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
12:15:36.588 28243   ALSA lib conf.c:4248:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
12:15:36.588 28243   ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name
12:15:36.588 28243   ALSA lib conf.c:4248:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
12:15:36.588 28243   ALSA lib conf.c:4727:(snd_config_expand) Evaluate error: No such file or directory
12:15:36.588 28243   ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM default
12:15:36.588 28243   [28247:28358:0206/121506.635404:2785036481:WARNING:alsa_util.cc(24)] PcmOpen: plug:default,No such file or directory
12:15:36.590 20141 [33/34] http/tests/media/video-play-stall.html failed unexpectedly (test timed out)
12:15:36.588 28243 worker/0 killing primary driver
12:15:36.589 28243 worker/0 killing secondary driver
12:15:36.589 28243 worker/0 http/tests/media/video-play-stall.html failed:
12:15:36.589 28243 worker/0  test timed out
12:15:37.562 28243 worker/0 http/tests/security/cors-rfc1918/addressspace-serviceworker-basic.html output stderr lines:
12:15:37.562 28243   Xlib:  extension "RANDR" missing on display ":9".
12:15:37.562 28243   [29925:29937:0206/121537.447870:2815848948:ERROR:cert_verify_proc_nss.cc(918)] CERT_PKIXVerifyCert for example.test failed err=-8181
12:15:37.564 20141