#![feature(const_fn_union)]
#![feature(const_generics)]
#![feature(const_option)]
+#![feature(const_precise_live_drops)]
#![feature(const_ptr_offset)]
#![feature(const_ptr_offset_from)]
#![feature(const_raw_ptr_comparison)]
#![feature(abi_unadjusted)]
#![feature(adx_target_feature)]
#![feature(maybe_uninit_slice)]
+#![feature(maybe_uninit_extra)]
#![feature(external_doc)]
#![feature(associated_type_bounds)]
#![feature(const_caller_location)]