LL | ($x:ident, $($tt:tt)*) => { $($tt)+ }
| ^^^^^
-error: aborting due to previous error
+error[E0308]: mismatched types
+ --> $DIR/issue-61033-1.rs:9:33
+ |
+LL | let _recovery_witness: () = 0;
+ | -- ^ expected `()`, found integer
+ | |
+ | expected due to this
+
+error: aborting due to 2 previous errors
+For more information about this error, try `rustc --explain E0308`.