#![feature(future_join)]
#![feature(future_poll_fn)]
#![feature(array_from_fn)]
+#![feature(hasher_prefixfree_extras)]
#![feature(hashmap_internals)]
#![feature(try_find)]
#![feature(inline_const)]
#![feature(sort_internals)]
#![feature(slice_take)]
#![feature(slice_from_ptr_range)]
+#![feature(split_as_slice)]
#![feature(maybe_uninit_uninit_array)]
#![feature(maybe_uninit_array_assume_init)]
#![feature(maybe_uninit_write_slice)]