rust-lang/rust — pull request #19462 by MatejLach (2014-12-02 16:14:30+00:00)
Title: replace 'but' with 'and'

Using `and` here instead of `but` here sounds better to me, as but makes it sound like an item which is still under active development shouldn't normally require more testing, but this one does - or something like that :-)
@steveklabnik?