Re: Pull request has multiple Travis failures - are they really my fault?
The error that you called out seems to be something related to a connectivity.
You can try amending your commit locally and just alter the commit message (Add or delete a space in the msg), and then forcibly push the commit back to your remote. (Dont forget to add a -f in your git push command)
This would cause Travis to trigger a build again. If this were a sporadic connectivity issue like what I am guessing, then your build should go fine.