tests_failed = False
      else:
        tests_failed = re.search(TESTS_FAILED_RE, backtrack_line)
      if build_failed or tests_failed:
        log_fragment = '\n'.join(
            log_lines[max(k - 20, 0):min(end_line + 1, len(log_lines) - 1)])
        lines['log_fragment'] = log_fragment
        lines['status'] = (InvokeStatus.build_failed if build_failed