#![allow(dead_code, deprecated, unused_variables, unused_mut)]
fn main() {
    let slice = &mut [1, 1, 1, 3, 3, 2, 2, 2];
    let mut iter = slice.chunk_by_mut(|a, b| a == b);
    assert_eq!(iter.next(), Some(& mut [1, 1, 1] [..]));
    assert_eq!(iter.next(), Some(& mut [3, 3] [..]));
    assert_eq!(iter.next(), Some(& mut [2, 2, 2] [..]));
    assert_eq!(iter.next(), None);
}