Properly stage new feature gates

oli-obk · ischeinkman · commit 4f3e5ce43a35 · 2018-12-18T23:55:38.000-08:00
diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
@@ -272,7 +272,7 @@
 #![feature(libc)]
 #![feature(link_args)]
 #![feature(linkage)]
-#![feature(min_const_unsafe_fn)]
+#![cfg_attr(not(stage0), feature(min_const_unsafe_fn))]
 #![feature(needs_panic_runtime)]
 #![feature(never_type)]
 #![feature(nll)]
