diff --git a/tests/test.rs b/tests/test.rs
index 3ea2d15..4ecab07 100644
--- a/tests/test.rs
+++ b/tests/test.rs
@@ -706,6 +706,8 @@
 
 // https://github.com/dtolnay/async-trait/issues/83
 pub mod issue83 {
+    #![allow(clippy::needless_arbitrary_self_type)]
+
     use async_trait::async_trait;
 
     #[async_trait]
@@ -959,3 +961,20 @@
         async fn load(&self, _key: &str) {}
     }
 }
+
+// https://github.com/dtolnay/async-trait/issues/120
+mod issue120 {
+    #![deny(clippy::trivially_copy_pass_by_ref)]
+
+    use async_trait::async_trait;
+
+    #[async_trait]
+    trait Trait {
+        async fn f(&self);
+    }
+
+    #[async_trait]
+    impl Trait for () {
+        async fn f(&self) {}
+    }
+}
diff --git a/tests/ui/self-span.stderr b/tests/ui/self-span.stderr
index f897c01..fb11528 100644
--- a/tests/ui/self-span.stderr
+++ b/tests/ui/self-span.stderr
@@ -5,7 +5,7 @@
    | --------------- `S` defined here
 ...
 18 |         let _: Self = Self;
-   |                       ^^^^ did you mean `S { /* fields */ }`?
+   |                       ^^^^ help: use struct literal syntax instead: `S {}`
 
 error[E0308]: mismatched types
   --> $DIR/self-span.rs:17:21