Travis CI failure - tests fail to start #7193
Description
Seems to be a recent failure.
https://api.travis-ci.org/v3/job/446471076/log.txt
[22:05:12] Starting 'test'...
25 10 2018 22:05:12.939:INFO [framework.detect-browsers]: Detecting browsers is disabled. The browsers of the browsers array are used.
25 10 2018 22:05:15.023:INFO [karma]: Karma v2.0.5 server started at http://0.0.0.0:9876/
25 10 2018 22:05:15.024:INFO [launcher]: Launching browser ChromeCI with unlimited concurrency
25 10 2018 22:05:15.029:INFO [launcher]: Starting browser ChromeHeadless
25 10 2018 22:05:16.485:INFO [HeadlessChrome 0.0.0 (Linux 0.0.0)]: Connected on socket FYUQ78QJTOVvdCgIAAAA with id 46055948
HeadlessChrome 0.0.0 (Linux 0.0.0) ERROR LOG: 'DEPRECATION:', 'Setting specFilter directly on Env is deprecated, please use the specFilter option in `configure`'
25 10 2018 22:05:46.615:WARN [HeadlessChrome 0.0.0 (Linux 0.0.0)]: Disconnected (1 times), because no message in 30000 ms.
HeadlessChrome 0.0.0 (Linux 0.0.0) ERROR
Disconnected, because no message in 30000 ms.
HeadlessChrome 0.0.0 (Linux 0.0.0): Executed 0 of 0 DISCONNECTED (30.131 secs / 0 secs)
I've also seen it fail for HeadlessFirefox.