Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/commit/a03cdfabe6eab48509b42a6831a21e488b9c3e80#commitcomment-26740277
In .travis.yml:
In .travis.yml on line 93:
So far, each profile had a different cache identifier. That way profiles
did not interfere with each other's caches. Not sure if this is more a
theoretical danger, but this commit breaks with that assumption.---
