error: this must repeat at least once --> $DIR/issue-61033-1.rs:4:34 | LL | ($x:ident, $($tt:tt)*) => { $($tt)+ } | ^^^^^ 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`.