PistonDevelopers/piston — pull request #470 by TyOverby (2014-07-03 18:10:55+00:00)
Title: Implement Ord, PartialOrd, Eq, PartialEq by hand

There is a bug in rustc that causes code explosion when auto-implementing PartialOrd. https://github.com/rust-lang/rust/issues/15375

Until those issues are fixed, I've implemented them by hand.