alter die_with_error to use fmt::Display, not Debug

parity/die.rs

@@ -31,7 +31,10 @@ pub fn die_with_error(module: &'static str, e: ethcore::error::Error) -> ! {
 	match e {
 		Error::Util(UtilError::StdIo(e)) => die_with_io_error(module, e),
 		Error::Client(ClientError::Trace(e)) => die_with_message(&format!("{}", e)),
-		_ => die!("{}: {:?}", module, e),
+		_ => {
+			trace!(target: module, "{:?}", e);
+			die!("{}: {}", module, e);
+		}
 	}
 }