Add some debugging output to connection

src/main.rs

@@ -88,7 +88,7 @@ fn run() -> Result<()> {
         for msg in msg_r.try_iter().take(10) {
             print!("Sending message...");
             match c.send(msg) {
-                Err(e) => println!("error!"),
+                Err(e) => println!("error! {:?}", e),
                 _ => println!("OK!"),
             }
         }