#![feature(const_type_id)]
#![feature(const_type_name)]
#![feature(const_default_impls)]
-#![feature(duration_consts_2)]
+#![feature(duration_consts_float)]
#![feature(ptr_metadata)]
#![feature(slice_ptr_get)]
#![feature(str_internals)]
#![cfg_attr(bootstrap, feature(const_raw_ptr_deref))]
#![feature(const_refs_to_cell)]
#![feature(decl_macro)]
+#![feature(derive_default_enum)]
#![feature(doc_cfg)]
#![feature(doc_notable_trait)]
#![cfg_attr(bootstrap, feature(doc_primitive))]