code: def precise_matcher(text_log_error):
      
      failure_line = text_log_error.metadata.failure_line
      logger.debug("Looking for test match in failure %d", failure_line.id)
  
      if failure_line.action != "test_result" or failure_line.message is None:
          return
  
      f = {
          'text_log_error___metadata__failure_line__action': 'test_result',
          'text_log_error___metadata__failure_line__test': failure_line.test,
          'text_log_error___metadata__failure_line__subtest': failure_line.subtest,
          'text_log_error___metadata__failure_line__status': failure_line.status,
          'text_log_error___metadata__failure_line__expected': failure_line.expected,
          'text_log_error___metadata__failure_line__message': failure_line.message
      }
      qwargs = (
          Q(text_log_error___metadata__best_classification=None)
          & (Q(text_log_error___metadata__best_is_verified=True)
             | Q(text_log_error__step__job=text_log_error.step.job))
      )
      qs = (TextLogErrorMatch.objects.filter(**f)
                                     .exclude(qwargs)
                                     .order_by('-score', '-classified_failure'))
  
      if not qs:
          return
  
      # chunk through the QuerySet because it could potentially be very large
      # time bound each call to the scoring function to avoid job timeouts
      # returns an iterable of (score, classified_failure_id) tuples
      chunks = chunked_qs_reverse(qs, chunk_size=20000)
      return chain.from_iterable(time_boxed(score_matches, chunks, time_budget=500))
docs: Query for TextLogErrorMatches identical to matches of the given TextLogError.