| ^^^^^^^^^ expected `()`, found closure
|
= note: expected unit type `()`
- found closure `[closure@$DIR/issue-20862.rs:2:5: 2:14 x:_]`
+ found closure `[closure@$DIR/issue-20862.rs:2:5: 2:14]`
error[E0618]: expected function, found `()`
--> $DIR/issue-20862.rs:7:13