The initial changes to the allocated CPU appear to have addressed the majority of the issues. This change was made just prior to the creation of this incident, which is why no further updates have been posted. Please reach out to support@travis-ci.com or ping us on https://twitter.com/travisci if you run into any problems with your Mac builds.
Posted Jun 26, 2015 - 16:48 UTC
Investigating
We have received reports of Mac builds stalling partway into execution or being cancelled due to no output. We are tuning the base VM image and its virtual hardware configuration in response, and will provide updates as we roll out changes.