rust-lang/rust — pull request #18455 by Manishearth (2014-10-30 12:04:21+00:00)
Title: Add command line flag for notifying when error free

Inspired by [@cmr's `rest_easy`](http://www.reddit.com/r/rust/comments/2krdbu/rest_easy_a_lint_to_tell_you_when_compilation/)

The name and text of the flag could use some improvement, and perhaps it should be behind `-Z`. Suggestions?