pgctl-poll-ready has no help

[bukzor]

$ pgctl-poll-ready  --help
Traceback (most recent call last):
  File "/nail/home/buck/pg/master/virtualenv_run/bin/pgctl-poll-ready", line 9, in <module>
    load_entry_point('pgctl==1.4.0rc1', 'console_scripts', 'pgctl-poll-ready')()
  File "/nail/home/buck/pg/master/virtualenv_run/lib/python2.7/site-packages/pgctl/poll_ready.py", line 76, in main
    notification_fd = int(floatfile('notification-fd'))
  File "/nail/home/buck/pg/master/virtualenv_run/lib/python2.7/site-packages/pgctl/poll_ready.py", line 19, in floatfile
    with open(filename) as f:
IOError: [Errno 2] No such file or directory: u'notification-fd'