bors ac49e65611 auto merge of #8440 : sfackler/rust/env-fix, r=pcwalton
The type of the result of option_env! was not fully specified in the
None case, leading to type check failures in the case where the variable
was not defined (e.g. option_env!("FOO").is_none()).

Also cleaned up some compilation warnings.
2013-08-14 04:41:20 -07:00
..
2013-08-03 22:48:02 -04:00