servo/string-cache — pull request #27 by Ygg01 (2014-10-18 18:41:42+00:00)
Title: Upgrade to rustc 0.13.0-nightly (222ae8b9b 2014-10-18 00:47:22 +0000)

This pull request fixes breaking change in latest `rustc`. It removes `extern crate debug` and replaces all `{:?}` with `{}`, while adding Show to `AtomType`.