Test fixes and rebase conflicts

Also some tidying up of a bunch of crate attributes

src/lib.rs

@@ -22,7 +22,7 @@
        html_favicon_url = "http://www.rust-lang.org/favicon.ico",
        html_root_url = "http://doc.rust-lang.org/nightly/",
        html_playground_url = "http://play.rust-lang.org/")]
-#![allow(unknown_features)] #![feature(int_uint)]
+#![feature(int_uint)]
 #![no_std]
 #![unstable(feature = "rand")]
 #![feature(staged_api)]