// run-pass
+#![feature(io_error_uncategorized)]
+
use std::fmt;
use std::io::{self, Error, Write, sink};
struct ErrorWriter;
-const FORMAT_ERROR: io::ErrorKind = io::ErrorKind::Other;
+const FORMAT_ERROR: io::ErrorKind = io::ErrorKind::Uncategorized;
const WRITER_ERROR: io::ErrorKind = io::ErrorKind::NotConnected;
impl Write for ErrorWriter {