test_pool_request (test.test_pooling_gevent.TestPoolSocketSharingGevent) ... Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/gevent/greenlet.py", line 390, in run
    result = self._run(*self.args, **self.kwargs)
  File "/home/behackett/work/mongo-python-driver/test/test_pooling_base.py", line 814, in find_slow
    db.command('eval', fn, nolock=True))
  File "/home/behackett/work/mongo-python-driver/pymongo/database.py", line 350, in command
    result = self["$cmd"].find_one(command, **extra_opts)
  File "/home/behackett/work/mongo-python-driver/pymongo/collection.py", line 514, in find_one
    for result in self.find(spec_or_id, *args, **kwargs).limit(-1):
  File "/home/behackett/work/mongo-python-driver/pymongo/cursor.py", line 749, in next
    if len(self.__data) or self._refresh():
  File "/home/behackett/work/mongo-python-driver/pymongo/cursor.py", line 700, in _refresh
    self.__uuid_subtype))
  File "/home/behackett/work/mongo-python-driver/pymongo/cursor.py", line 657, in __send_message
    self.__tz_aware)
  File "/home/behackett/work/mongo-python-driver/pymongo/helpers.py", line 102, in _unpack_response
    error_object["$err"])
OperationFailure: database error: unrecognized command: eval
<Greenlet at 0x7f480403e0f0: find_slow> failed with OperationFailure