START: cloud_to_cloud:c++:ruby_server:large_unary
running run_interop
Traceback (most recent call last):
  File "src/python/grpcio_tests/setup.py", line 121, in <module>
    test_runner=TEST_RUNNER,
  File "/usr/lib/python2.7/distutils/core.py", line 151, in setup
    dist.run_commands()
  File "/usr/lib/python2.7/distutils/dist.py", line 953, in run_commands
    self.run_command(cmd)
  File "/usr/lib/python2.7/distutils/dist.py", line 972, in run_command
    cmd_obj.run()
  File "/var/local/git/grpc/src/python/grpcio_tests/commands.py", line 201, in run
    self.run_client()
  File "/var/local/git/grpc/src/python/grpcio_tests/commands.py", line 215, in run_client
    from tests.interop import client
  File "/var/local/git/grpc/src/python/grpcio_tests/tests/interop/client.py", line 36, in <module>
    from grpc.beta import implementations
  File "/var/local/git/grpc/py27/local/lib/python2.7/site-packages/grpc/beta/implementations.py", line 39, in <module>
    from grpc import _auth
  File "/var/local/git/grpc/py27/local/lib/python2.7/site-packages/grpc/_auth.py", line 43, in <module>
    class GoogleCallCredentials(grpc.AuthMetadataPlugin):
AttributeError: 'module' object has no attribute 'AuthMetadataPlugin'

FAILED: cloud_to_cloud:python:ruby_server:cancel_after_first_response [ret=1, pid=20520]