message: Test that src path of rename is no longer a file
diff: @@ -91,6 +91,7 @@ fn main() {
  let file = File::create(&path1).unwrap();
  drop(file);
  rename(&path1, &path2).unwrap();
  + assert_eq!(ErrorKind::NotFound, path1.metadata().unwrap_err().kind());
  assert!(path2.metadata().unwrap().is_file());
  remove_file(&path2).ok();
  