#![feature(unicode)]
#![feature(rustc_diagnostic_macros)]
-#![feature(match_default_bindings)]
+#![cfg_attr(stage0, feature(match_default_bindings))]
#![feature(non_exhaustive)]
-#![feature(i128_type)]
+#![cfg_attr(stage0, feature(i128_type))]
#![feature(const_atomic_usize_new)]
#![feature(rustc_attrs)]