Merge "Fix crash when failing to parse test discovery output" into main

      if optimization_rationale:

        get_metrics_agent().report_unoptimized_target(target, optimization_rationale)

      else:

        try:

          regex = r'\b(%s)\b' % re.escape(target)

          if any(re.search(regex, opt) for opt in test_discovery_zip_regexes):

            get_metrics_agent().report_unoptimized_target(target, 'Test artifact used.')

          else:

            get_metrics_agent().report_optimized_target(target)

        except Exception as e:

          logging.error(f'unable to parse test discovery output: {repr(e)}')

      if self._unused_target_exclusion_enabled(

          target