Github user zentol commented on the issue:
https://github.com/apache/flink/pull/5118
As for failing the build, I don't like that option, even if I find a way to
do it. We _do not know_ how such a kill-switch would interact with various IDEs
and tools.
What we could do however is print a warning if mvn package/install is
invoked without specifying the build-jar profile.---
