python-confluent-kafka segmentation fault test

test.py

from confluent_kafka import Consumer
import unittest


class MinimalTest(unittest.TestCase):
    def test(self):
        conf = {
                'bootstrap.servers': 'localhost:9092',
                'group.id': 'test.py',
                'session.timeout.ms': 6000, # commenting this out fixes SegmentationFault
            }
        kc = Consumer(conf)

        kc.subscribe(["test"])  # test topic has some messages
        kc.poll(timeout=2)

        raise Exception('hi') # we are not closing consumer here