Build fails with interpolate_idents

[code-ape]

I've tried building the example on 1.2 stable and 1.4 nightly, both error with the following:

% cargo build
   Compiling interpolate_idents v0.0.3
   Compiling cpython v0.0.2
/home/foo/.multirust/toolchains/nightly/cargo/registry/src/
  github.com-0a35038f75765ae4/interpolate_idents-0.0.3/src/lib.rs:36:48: 
  36:67 error: mismatched types:
 expected `&str`,
    found `syntax::parse::token::InternedString`
(expected &-ptr,
    found struct `syntax::parse::token::InternedString`) [E0308]
/home/foo/.multirust/toolchains/nightly/cargo/registry/src/
  github.com-0a35038f75765ae4/interpolate_idents-0.0.3/src/lib.rs:36

            new_ident.push_str(ident.name.as_str());
            ^~~~~~~~~~~~~~~~~~~

note: in expansion of for loop expansion
/home/foo/.multirust/toolchains/nightly/cargo/registry/src/
  github.com-0a35038f75765ae4/interpolate_idents-0.0.3/src/lib.rs:29:17: 
  40:18 note: expansion site
/home/foo/.multirust/toolchains/nightly/cargo/registry/src/
  github.com-0a35038f75765ae4/interpolate_idents-0.0.3/src/lib.rs:36:48: 
  36:67 help: run `rustc --explain E0308` to see a detailed explanation
error: aborting due to previous error
Could not compile `interpolate_idents`.

Not sure what to do to fix this, since it appears to be an issue with interpolate_idents (one of this repo's dependencies). But thought at the very least it would be good to report it.

[dgrunwald]

I've fixed that in SkylerLipthay/interpolate_idents#1

The github version of rust-cpython currently points to my interpolate_idents fork, so that should build with rust nightlies. crates.io will have to wait until the interpolate_idents package is updated.