#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(rev_into_inner)]
fn main() {
    let s = "foobar";
    let mut rev = s.chars().rev();
    assert_eq!(rev.next(), Some('r'));
    assert_eq!(rev.next(), Some('a'));
    assert_eq!(rev.next(), Some('b'));
    assert_eq!(rev.into_inner().collect::< String > (), "foo");
}