If this were not happening in main(), then the following would be one way of handling the errors. fn foo() -> Result<(),Error> { // Create an event loo

If this were not happening in main(), then the following would be one way of handling the errors. fn foo() -> Result<(),Error> { // Create an event loop let mut event_loop = try!(EventLoop::<(), u64>::new()); let sender = event_loop.channel(); for i in 0.. 5 { try!(sender.send(i)); } // Start it try!(event_loop.run(&mut BearHandler(0)); }