error[E0308]: mismatched types
  --> $DIR/return-closures.rs:3:5
   |
LL | fn foo() {
   |         - help: try adding a return type: `-> impl FnOnce(&i32) -> i32`
LL |
LL |     |x: &i32| 1i32
   |     ^^^^^^^^^^^^^^ expected `()`, found closure
   |
   = note: expected unit type `()`
                found closure `{closure@$DIR/return-closures.rs:3:5: 3:14}`

error[E0308]: mismatched types
  --> $DIR/return-closures.rs:9:5
   |
LL | fn bar(i: impl Sized) {
   |                      - help: a return type might be missing here: `-> _`
LL |
LL |     || i
   |     ^^^^ expected `()`, found closure
   |
   = note: expected unit type `()`
                found closure `{closure@$DIR/return-closures.rs:9:5: 9:7}`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0308`.