Just upgraded to 2016.1, now when running the rake test task (from the IDE), I get that message in the console:
RubyMine reporter works only if it test was launched using RubyMine IDE or TeamCity CI server !!!
Using default results reporter...
If you use right click and select test from the context menu, then the reporter is working as expected.
Was this functionality removed in 2016.1 or am I missing something stupid?