#![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![feature(crate_visibility_modifier)]
+#![feature(decl_macro)]
#![feature(drain_filter)]
#![feature(generators)]
+#![feature(generic_associated_types)]
+#![feature(iter_from_generator)]
+#![feature(let_chains)]
#![feature(let_else)]
-#![feature(nll)]
#![feature(once_cell)]
#![feature(proc_macro_internals)]
#![feature(macro_metavar_expr)]
#![feature(min_specialization)]
#![feature(slice_as_chunks)]
+#![feature(trusted_len)]
#![feature(try_blocks)]
#![feature(never_type)]
#![recursion_limit = "256"]