| fn foo(items: &mut Vec<u8>) { | |
| items.sort(); | |
| } | |
| fn bar() -> impl Iterator<Item = i32> { | |
| //~^ ERROR expected `foo` to return `i32`, but it returns `()` [E0271] | |
| let mut x: Vec<Vec<u8>> = vec![vec![0, 2, 1], vec![5, 4, 3]]; | |
| x.iter_mut().map(foo) | |
| } | |
| fn main() { | |
| bar(); | |
| } |