Auto merge of #2889 - bennofs:fix-cargo-rustc-help, r=alexcrichton
authorbors <bors@rust-lang.org>
Mon, 18 Jul 2016 04:34:15 +0000 (21:34 -0700)
committerGitHub <noreply@github.com>
Mon, 18 Jul 2016 04:34:15 +0000 (21:34 -0700)
fix help for cargo rustc -p

cargo rustc -p does the same as cargo build -p, so I just copied it from there.


Trivial merge