#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(addr_parse_ascii)]
use std::net::Ipv6Addr;
fn main() {
    let localhost = Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1);
    assert_eq!(Ipv6Addr::parse_ascii(b"::1"), Ok(localhost));
}