#![feature(iter_rfold)]
#![feature(lang_items)]
#![feature(needs_allocator)]
+#![feature(nonnull)]
#![feature(nonzero)]
#![feature(offset_to)]
#![feature(optin_builtin_traits)]
#![feature(placement_in_syntax)]
#![feature(placement_new_protocol)]
#![feature(rustc_attrs)]
-#![feature(shared)]
#![feature(slice_get_slice)]
#![feature(slice_patterns)]
#![feature(slice_rsplit)]