When I compile scala in play console, I got this:
[warn] there were 1 feature warning(s); re-run with -feature for details [warn] one warning found >
[warn] there were 1 feature warning(s); re-run with -feature for details [warn] one warning found
Just for completion if you're in the play/sbt repl you can modify the value of scalacOptions just for the session, like this:
scalacOptions