Summary: After about 500MB, Travis seems to kill the TLS connection. Could be a traffic limit, could be a timeout. I've only seen this for their MacOS boxes. We're now retrying a few times with curl, which seems to work. Reviewed By: emilsjolander Differential Revision: D6051024 fbshipit-source-id: feb73bfb9fd81b2a8b9b4d33d4e9f230a9899a66