#![no_core]
#![deny(missing_docs)]
+#![cfg_attr(not(stage0), deny(warnings))]
#![feature(allow_internal_unstable)]
#![feature(associated_type_defaults)]
#![feature(reflect)]
#![feature(unwind_attributes)]
#![feature(repr_simd, platform_intrinsics)]
+#![feature(rustc_attrs)]
#![feature(staged_api)]
#![feature(unboxed_closures)]