code: def fetch_time_output(marker, format_s, ins):
      
      from parse import parse
  
      timings = [x for x in ins if marker in x]
      res = [parse(format_s, t) for t in timings]
      return [_f for _f in res if _f]
docs: Fetch the output /usr/bin/time from a.
  
      Args:
          marker: The marker that limits the time output
          format_s: The format string used to parse the timings
          ins: A list of lines we look for the output.
  
      Returns:
          A list of timing tuples