message: Don't try to copy CSV files that weren't generated.
diff: @@ -365,5 +365,6 @@ fn copy_new_dir_to_base(id: &str, baseline: &str, output_directory: &Path) {
  &new_dir.join("benchmark.json"),
  &base_dir.join("benchmark.json")
  ));
  + #[cfg(feature = "csv_output")]
  try_else_return!(fs::cp(&new_dir.join("raw.csv"), &base_dir.join("raw.csv")));
  }
  