code: def _get_all_run_infos(self):
      
      info_dir = self._settings.info_dir
      if not os.path.isdir(info_dir):
        return []
      paths = [os.path.join(info_dir, x) for x in os.listdir(info_dir)]
  
      # We copy the RunInfo as a dict, so we can add stuff to it to pass to the template.
      # We filter only those that have a timestamp, to avoid a race condition with writing
      # that field.
      return [d for d in
              [RunInfo(os.path.join(p, 'info')).get_as_dict() for p in paths
               if os.path.isdir(p) and not os.path.islink(p)]
              if 'timestamp' in d]
docs: Find the RunInfos for all runs since the last clean-all.