[Piuparts-reports] problem with piuparts-slave detected

[piuparts master]

Either a test is running for a very long time (but no test should run longer than an hour), piuparts-slave hangs or is not running at all or wasn't started with ~piupartss/bin/slave_run - please investigate and take appropriate measures!

Traceback (most recent call last):
  File "../share/piuparts/piuparts-slave", line 585, in <module>
    main()
  File "../share/piuparts/piuparts-slave", line 572, in main
    processed = section.run()
  File "../share/piuparts/piuparts-slave", line 295, in run
    self._slave.connect_to_master(self._log_file)
  File "../share/piuparts/piuparts-slave", line 164, in connect_to_master
    raise MasterDidNotGreet()
__main__.MasterDidNotGreet: ('M', 'a', 's', 't', 'e', 'r', ' ', 'd', 'i', 'd', ' ', 'n', 'o', 't', ' ', 's', 't', 'a', 'r', 't', ' ', 'w', 'i', 't', 'h', ' ', "'", 'h', 'e', 'l', 'l', 'o', "'")