2 use std::net::TcpListener;
4 struct NoToSocketAddrs(String);
6 impl std::ops::Deref for NoToSocketAddrs {
8 fn deref(&self) -> &Self::Target {
14 let _works = TcpListener::bind("some string");
15 let bad = NoToSocketAddrs("bad".to_owned());
16 let _errors = TcpListener::bind(&*bad);
17 //~^ ERROR the trait bound `NoToSocketAddrs: ToSocketAddrs` is not satisfied