message: found a way to reuse SourceId::for_path in SourceId::from_cwd
diff: @@ -171,15 +171,13 @@ impl SourceId {
  ///
  /// Pass absolute path
  pub fn from_cwd(path: &Path) -> CargoResult<SourceId> {
  - let url = path.to_url()?;
  + let source_id = SourceId::for_path(path)?;
  + let source_id = Arc::try_unwrap(source_id.inner)
  + .map_err(|_| format_err!("failed to create SourceId from cwd `{}`", path.display()))?;
  Ok(SourceId {
  inner: Arc::new(SourceIdInner {
  - kind: Kind::Path,
  - canonical_url: git::canonicalize_url(&url)?,
  - url,
  - precise: None,
  - name: None,
  from_cwd: true,
  + ..source_id
  }),
  })
  }
  