message: LLVM has to many unit tests using stdin.. bump random chars for reports
diff: @@ -38,7 +38,7 @@ if (!report_dir_created && !opt_report_dir.empty()) {
  if (!opt_overwrite_reports) {
  do {
  auto newname = fname.stem();
  - newname += "_" + get_random_str(3) + ".txt";
  + newname += "_" + get_random_str(8) + ".txt";
  path.replace_filename(newname);
  } while (fs::exists(path));
  }
  