Travis: Initiating build for commit 'e8bf4a3822d78b269ee9f6f45f05a824031936be' on branch 'master': calling travis_wait to work around "No output has been received in the last 10 minutes"
this potentially indicates a stalled build or something wrong with the build itself.
https://travis-ci.org/piwik/piwik/jobs/25761087#L252