#![feature(bool_to_option)]
#![feature(box_patterns)]
#![feature(box_syntax)]
-#![feature(const_fn)]
#![feature(const_transmute)]
#![feature(core_intrinsics)]
#![feature(drain_filter)]
-#![cfg_attr(windows, feature(libc))]
#![feature(never_type)]
#![feature(exhaustive_patterns)]
#![feature(overlapping_marker_traits)]
#[macro_use]
extern crate log;
#[macro_use]
-extern crate syntax;
-#[macro_use]
extern crate smallvec;
#[cfg(test)]