message: fix - remove unwrap
diff: @@ -545,7 +545,10 @@ impl<'cfg> Workspace<'cfg> {
  }
  fn expand_member_path(path: &Path) -> CargoResult<Vec<PathBuf>> {
  - let path = path.to_str().unwrap();
  + let path = match path.to_str() {
  + Some(p) => p,
  + None => return Ok(Vec::new()),
  + };
  let res = glob(path).map_err(|e| {
  human(format!("could not parse pattern `{}`: {}", &path, e))
  })?;
  