Bump versions in Cargo.lock

[remram44]

Doesn't seem to build on current nightly, so I regenerated Cargo.lock

   Compiling regex v0.1.27
   Compiling rustc-serialize v0.3.12
/home/remram/.multirust/toolchains/nightly/cargo/registry/src/github.com-0a35038f75765ae4/rustc-serialize-0.3.12/src/json.rs:244:16: 244:21 error: unresolved import `std::num::Float`. There is no `Float` in `std::num`
/home/remram/.multirust/toolchains/nightly/cargo/registry/src/github.com-0a35038f75765ae4/rustc-serialize-0.3.12/src/json.rs:244 use std::num::{Float, Int};
                                                                                                                                                ^~~~~
/home/remram/.multirust/toolchains/nightly/cargo/registry/src/github.com-0a35038f75765ae4/rustc-serialize-0.3.12/src/json.rs:244:23: 244:26 error: unresolved import `std::num::Int`. There is no `Int` in `std::num`
/home/remram/.multirust/toolchains/nightly/cargo/registry/src/github.com-0a35038f75765ae4/rustc-serialize-0.3.12/src/json.rs:244 use std::num::{Float, Int};
                                                                                                                                                       ^~~
/home/remram/.multirust/toolchains/nightly/cargo/registry/src/github.com-0a35038f75765ae4/rustc-serialize-0.3.12/src/serialize.rs:18:16: 18:23 error: unresolved import `std::ffi::AsOsStr`. There is no `AsOsStr` in `std::ffi`
/home/remram/.multirust/toolchains/nightly/cargo/registry/src/github.com-0a35038f75765ae4/rustc-serialize-0.3.12/src/serialize.rs:18 use std::ffi::{AsOsStr, OsString};
                                                                                                                                                    ^~~~~~~
error: aborting due to 3 previous errors

[steveklabnik]

Thanks so much!