add ui test for issue-69276

src/test/ui/async-await/issue-69276.rs

@@ -0,0 +1,12 @@
+// edition:2018
+
+struct S<'a>(&'a i32);
+
+impl<'a> S<'a> {
+    async fn new(i: &'a i32) -> Self {
+    //~^ ERROR `async fn` return type cannot contain a projection or `Self` that references lifetimes from a parent scope
+        S(&22)
+    }
+}
+
+fn main() {}

src/test/ui/async-await/issue-69276.stderr

@@ -0,0 +1,8 @@
+error: `async fn` return type cannot contain a projection or `Self` that references lifetimes from a parent scope
+  --> $DIR/issue-69276.rs:6:33
+   |
+LL |     async fn new(i: &'a i32) -> Self {
+   |                                 ^^^^
+
+error: aborting due to previous error
+