#![feature(atomic_mut_ptr)]
#![feature(char_error_internals)]
#![feature(char_internals)]
-#![feature(core_c_str)]
#![feature(core_intrinsics)]
#![feature(cstr_from_bytes_until_nul)]
#![feature(cstr_internals)]
//
// Library features (alloc):
#![feature(alloc_layout_extra)]
-#![feature(alloc_c_string)]
-#![feature(alloc_ffi)]
#![feature(allocator_api)]
#![feature(get_mut_unchecked)]
#![feature(map_try_insert)]