I've recently learned that docs aren't generating well on the master branch. I believe that the issue is related to performance issues with groovysh - the shell is so slow now when it comes to processing multi-line scripts. I've raised the issue with the groovy project but have not yet really gotten any feedback. If you have anyone feels like saving the day with their Java profiling skills, your help would be appreciated.
https://issues.apache.org/jira/browse/GROOVY-9785 If we can't get this issue resolved, it really won't' be possible to release 3.5.0. I won't go into alternatives right now as there's time to try to get this fixed, but I'd call this a blocker.
