1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 #![allow(unknown_features)]
12 #![feature(box_syntax)]
14 use std::sync::mpsc::channel;
15 use std::io::{ChanReader, ChanWriter};
19 let (tx, rx) = channel();
20 let mut reader = ChanReader::new(rx);
21 let stderr = ChanWriter::new(tx);
23 let res = thread::Builder::new().stderr(box stderr as Box<Writer + Send>).scoped(move|| -> () {
24 panic!("Hello, world!")
26 assert!(res.is_err());
28 let output = reader.read_to_string().unwrap();
29 assert!(output.as_slice().contains("Hello, world!"));