// the directory specified by the environment variable
  // TEST_UNDECLARED_OUTPUTS_DIR.
  string lower_path = absl::AsciiStrToLower(path);
  if (lower_path == "sponge") {
    if (!tensorflow::io::GetTestUndeclaredOutputsDir(&path)) {
      LOG(ERROR) << "MLIR crash reproducer is set to '" << dir_path.str()
                 << "', but environment variable TEST_UNDECLARED_OUTPUTS_DIR "
                    "is not set, so cannot dump anywhere.";