ntpq: mrulist command dies

I am spinning up Stratum 2 servers for the pool in India. These are Ubuntu 17.04-dev servers. ntpsec is "latest" git pull.

I wanted to see how many clients have hit this so far.

root@ip-172-31-12-89:~# ntpq -V
ntpq ntpsec 0.9.5+979 2016-11-17T02:18:00Z

I try, from an email from Hal of Apr 15:

root@ip-172-31-12-89:~# ntpq
ntpq>     mru mincount=1000 sort=avgint
*** Unknown syntax: mru mincount=1000 sort=avgint
ntpq>

I try, also:

ntpq> mrulist
Ctrl-C will stop MRU retrieval and display partial results.
Traceback (most recent call last):
  File "/usr/local/bin/ntpq", line 1585, in <module>
    interpreter.cmdloop()
  File "/usr/lib/python2.7/cmd.py", line 142, in cmdloop
    stop = self.onecmd(line)
  File "/usr/lib/python2.7/cmd.py", line 221, in onecmd
    return func(arg)
  File "/usr/local/bin/ntpq", line 1247, in do_mrulist
    span = self.session.mrulist(variables=cmdvars, rawhook=mruhook)
  File "/usr/local/lib/python2.7/dist-packages/ntp/packet.py", line 1158, in mrulist
    incr += ", addr.%d=%s, last.%d=%s" % (i, e.addr, i, e.last)
UnboundLocalError: local variable 'incr' referenced before assignment