#![feature(const_fn)]
#![feature(core_intrinsics)]
#![feature(decl_macro)]
-#![feature(in_band_lifetimes)]
#![feature(macro_vis_matcher)]
#![feature(exhaustive_patterns)]
#![feature(range_contains)]
html_root_url = "https://doc.rust-lang.org/nightly/",
html_playground_url = "https://play.rust-lang.org/")]
-#![feature(ascii_ctype)]
#![feature(rustc_private)]
#![feature(box_patterns)]
#![feature(box_syntax)]
#![feature(align_offset)]
#![feature(arbitrary_self_types)]
#![feature(array_error_internals)]
-#![feature(ascii_ctype)]
#![feature(asm)]
#![feature(attr_literals)]
#![feature(box_syntax)]