Traceback (most recent call last):
  File "/usr/sbin/power-usage-report", line 199, in <module>
    main()
  File "/usr/sbin/power-usage-report", line 196, in main
    powertop_report(output['powertop'])
  File "/usr/sbin/power-usage-report", line 173, in powertop_report
    while not lines[i]:
IndexError: list index out of range