Format the compile-test sources with rustfmt 0.8.2

test_suite/tests/run-pass/identity-op.rs

@@ -15,6 +15,8 @@ extern crate serde_derive;
 // serialized, which Clippy warns about. If the expansion info is registered
 // correctly, the Clippy lint is not triggered.
 #[derive(Serialize)]
-struct A { b: u8 }
+struct A {
+    b: u8,
+}
 
 fn main() {}