#![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
#![feature(array_windows)]
-#![feature(assoc_char_funcs)]
+#![feature(assert_matches)]
#![feature(backtrace)]
#![feature(bool_to_option)]
#![feature(box_patterns)]
#![feature(extern_types)]
#![feature(nll)]
#![feature(once_cell)]
-#![feature(option_expect_none)]
-#![feature(or_patterns)]
+#![cfg_attr(bootstrap, feature(or_patterns))]
#![feature(min_specialization)]
#![feature(trusted_len)]
#![feature(test)]