Never-looping loops

[llogiq]

This lint would warn on loops with unconditional breaks, because in that case, both loop and break; can be removed, leaving only a scope.

This would be either a remnant of some refactoring, code by one who doesn't know plain scope definitions or test cases for clippy lints. 😄

[llogiq]

Of course we'd have to check for other break or continues within the loop.

[birkenfeld]

Yes, that's probably useful.

Similarly continue at the end of the loop can be removed.

[llogiq]

True.

[Manishearth]

This should have macro checks, but otherwise sgtm