barbican-worker.py fails to start due to outdated log import

bin/barbican-worker.py fails to start and shows the following traceback:

Traceback (most recent call last):
  File "bin/barbican-worker.py", line 40, in <module>
    from barbican.openstack.common import log
  File "/home/john/Repositories/github/barbican/barbican/openstack/common/log.py", line 193, in <module>
  File "/home/john/.virtualenvs/Barbican/lib/python2.7/site-packages/oslo_config/cfg.py", line 1748, in __inner
    result = f(self, *args, **kwargs)
  File "/home/john/.virtualenvs/Barbican/lib/python2.7/site-packages/oslo_config/cfg.py", line 1929, in register_cli_opts
    self.register_cli_opt(opt, group, clear_cache=False)
  File "/home/john/.virtualenvs/Barbican/lib/python2.7/site-packages/oslo_config/cfg.py", line 1752, in __inner
    return f(self, *args, **kwargs)
  File "/home/john/.virtualenvs/Barbican/lib/python2.7/site-packages/oslo_config/cfg.py", line 1923, in register_cli_opt
    return self.register_opt(opt, group, cli=True, clear_cache=False)
  File "/home/john/.virtualenvs/Barbican/lib/python2.7/site-packages/oslo_config/cfg.py", line 1752, in __inner
    return f(self, *args, **kwargs)
  File "/home/john/.virtualenvs/Barbican/lib/python2.7/site-packages/oslo_config/cfg.py", line 1894, in register_opt
    if _is_opt_registered(self._opts, opt):
  File "/home/john/.virtualenvs/Barbican/lib/python2.7/site-packages/oslo_config/cfg.py", line 573, in _is_opt_registered
    raise DuplicateOptError(opt.name)
oslo_config.cfg.DuplicateOptError: duplicate option: use-syslog

I'm assuming this has something to do with the transition to olso_log.