Github user trixpan commented on the issue: https://github.com/apache/nifi/pull/985 @apiri makes complete sense. afaik this can be achieved using `mvn apache-rat:check and checkstyle:check ` so I added the above command to the before_install stage of the travis job. This should "fast fail" jobs failing to comply with development guidelines and by consequence, reduce a bit the load on travis-ci infrastructure. Very good call.
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