Jobs are consistently failing mid-stream, and reporting Build Errored, but without any reasons or error messages logged.
Travis completes the first of three command in a very simple Travis script and then seems to just abort and report failure without logging any reasons. This is a consistent and ongoing problem, where maybe one in 10 jobs succeed, and the rest fail without any meaningful reason.
An example job failure is here:
https://travis-ci.com/github/KhronosGroup/MoltenVK/jobs/359022967