diff --git a/below/src/main.rs b/below/src/main.rs
index 2179ea70..00d78fdf 100644
--- a/below/src/main.rs
+++ b/below/src/main.rs
@@ -12,7 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#![cfg_attr(feature = "enable_backtrace", feature(backtrace))]
 #![recursion_limit = "256"]
 
 use std::cell::RefCell;