Fix CI on latest nightly

Amanieu · Amanieu · commit 76b24f99d459 · 2021-04-30T19:15:53.000+01:00
diff --git a/examples/intrinsics.rs b/examples/intrinsics.rs
@@ -6,7 +6,7 @@
 #![allow(unused_features)]
 #![cfg_attr(thumb, no_main)]
 #![deny(dead_code)]
-#![feature(test)]
+#![feature(bench_black_box)]
 #![feature(lang_items)]
 #![feature(start)]
 #![feature(allocator_api)]
