#![feature(const_size_of_val)]
#![feature(const_align_of_val)]
#![feature(const_ptr_read)]
+#![feature(const_maybe_uninit_zeroed)]
#![feature(const_maybe_uninit_write)]
#![feature(const_maybe_uninit_as_mut_ptr)]
#![feature(const_refs_to_cell)]
#![feature(hasher_prefixfree_extras)]
#![feature(inline_const)]
#![feature(inplace_iteration)]
+#![cfg_attr(test, feature(is_sorted))]
#![feature(iter_advance_by)]
#![feature(iter_next_chunk)]
#![feature(iter_repeat_n)]