message: Fixed instance in Windows cfg.
diff: @@ -102,7 +102,7 @@ mod imp {
  pub fn read2(out_pipe: ChildStdout,
  err_pipe: ChildStderr,
  - mut data: &mut FnMut(bool, &mut Vec<u8>, bool)) -> io::Result<()> {
  + data: &mut FnMut(bool, &mut Vec<u8>, bool)) -> io::Result<()> {
  let mut out = Vec::new();
  let mut err = Vec::new();
  