new_contents: #!/usr/bin/env python3
  
  import json
  import sys
  
  def run_compare(report):
      with open(report) as f:
          doc = json.load(f)
  
      for testcase in doc:
          measurements = testcase['measurements']
          time = float(measurements[0]["time"])
          if time < 0:
              continue
          if time > 0.05:
              print("More than 5% performance decrease, considering it a failure")
              sys.exit(2)
  
  
  def main(argv):
      if len(argv) != 2:
          print(f'Usage: {argv[0]} <path-to-compare.json>')
          sys.exit(1)
      run_compare(argv[1])
  
  if __name__ == '__main__':
      main(sys.argv)
  
subject: Add a script to process benchmark comparisons