message: Simplify iteration even more
diff: @@ -17,8 +17,7 @@ pub fn find_pkg_directory(guess_path: &str) -> Option<PathBuf> {
  path.read_dir().ok().and_then(|entries| {
  entries
  - .filter(|x| x.is_ok())
  - .map(|x| x.unwrap().path())
  + .filter_map(|x| x.ok().map(|v| v.path()))
  .find(|x| is_pkg_directory(&x))
  })
  }
  