1 error[E0121]: the type placeholder `_` is not allowed within types on item signatures for return types
2 --> $DIR/issue-80179.rs:10:24
4 LL | fn returns_fn_ptr() -> _ {
7 | not allowed in type signatures
8 | help: replace with the correct return type: `fn() -> i32`
10 error[E0121]: the type placeholder `_` is not allowed within types on item signatures for return types
11 --> $DIR/issue-80179.rs:18:25
13 LL | fn returns_closure() -> _ {
14 | ^ not allowed in type signatures
16 = help: consider using an `Fn`, `FnMut`, or `FnOnce` trait bound
17 = note: for more information on `Fn` traits and closure types, see https://doc.rust-lang.org/book/ch13-01-closures.html
19 error: aborting due to 2 previous errors
21 For more information about this error, try `rustc --explain E0121`.