1 error[E0308]: mismatched types
2 --> $DIR/issue-50600.rs:2:13
4 LL | fn([u8; |x: u8| {}]),
5 | ^^^^^^^^^^ expected `usize`, found closure
7 = note: expected type `usize`
8 found closure `[closure@$DIR/issue-50600.rs:2:13: 2:23]`
10 error: aborting due to previous error
12 For more information about this error, try `rustc --explain E0308`.