diff --git a/actix-http/src/body/message_body.rs b/actix-http/src/body/message_body.rs
index e274cf8a..c3f55ce7 100644
--- a/actix-http/src/body/message_body.rs
+++ b/actix-http/src/body/message_body.rs
@@ -555,6 +555,7 @@ mod tests {
         };
     }
 
+    #[allow(unused_allocation)] // triggered by `Box::new(()).size()`
     #[actix_rt::test]
     async fn boxing_equivalence() {
         assert_eq!(().size(), BodySize::Sized(0));
diff --git a/actix-web/benches/responder.rs b/actix-web/benches/responder.rs
index 20aae335..ac4d1832 100644
--- a/actix-web/benches/responder.rs
+++ b/actix-web/benches/responder.rs
@@ -87,7 +87,7 @@ fn future_responder(c: &mut Criterion) {
 
             let start = Instant::now();
 
-            let _res = rt.block_on(async { futs.await });
+            let _res = rt.block_on(futs);
 
             start.elapsed()
         })