#![feature(const_discriminant)]
#![feature(const_float_bits_conv)]
#![feature(const_float_classify)]
+#![feature(const_fmt_arguments_new)]
#![feature(const_heap)]
#![feature(const_inherent_unchecked_arith)]
#![feature(const_int_unchecked_arith)]
#![feature(const_maybe_uninit_as_ptr)]
#![feature(const_maybe_uninit_assume_init)]
#![feature(const_num_from_num)]
+#![feature(const_ops)]
#![feature(const_option)]
#![feature(const_pin)]
#![feature(const_replace)]