40       .and_then(|tx| tx.send(Ok(2)))  in list()
41       .and_then(|tx| tx.send(Ok(3)))  in list()
49       .and_then(|tx| tx.send(Ok(2)))  in err_list()
50       .and_then(|tx| tx.send(Err(3)))  in err_list()
102 fn and_then() {  in and_then()  function
103     assert_done(|| list().and_then(|a| Ok(a + 1)).collect(), Ok(vec![2, 3, 4]));  in and_then()
104     assert_done(|| list().and_then(|a| err::<i32, u32>(a as u32)).collect::<Vec<_>>(),  in and_then()
197       .and_then(|tx| tx.send(Box::new(d.map_err(|_| panic!()))))  in buffered()
215       .and_then(|tx| tx.send(Box::new(d.map_err(|_| panic!()))))  in buffered()
236       .and_then(|tx| tx.send(Box::new(d.recover(|_| panic!()))))  in unordered()
253       .and_then(|tx| tx.send(Box::new(d.recover(|_| panic!()))))  in unordered()