Remove some useless String::to_string calls
authormcarton <cartonmartin+git@gmail.com>
Fri, 15 Jan 2016 16:35:22 +0000 (17:35 +0100)
committermcarton <cartonmartin+git@gmail.com>
Sat, 16 Jan 2016 12:02:26 +0000 (13:02 +0100)
commit3ed6f2cad80dce474532e9ab978c491ff76df604
tree3d652c125b8ad7b3ee1d9490223618ef4c8af074
parent8b7001f937d2abb40d49e3c6a3085aa4909b07b6
Remove some useless String::to_string calls

Fix some Clippy’s string_to_string warnings.
src/cargo/ops/cargo_doc.rs
src/cargo/ops/cargo_new.rs
src/cargo/ops/cargo_rustc/context.rs
src/cargo/ops/registry.rs