auto merge of #1009 : jmesmon/cargo/err-msg-fix, r=alexcrichton
authorbors <bors@rust-lang.org>
Mon, 8 Dec 2014 20:16:19 +0000 (20:16 +0000)
committerbors <bors@rust-lang.org>
Mon, 8 Dec 2014 20:16:19 +0000 (20:16 +0000)
Updates an error message


Trivial merge