Installing collected packages: grpcio, grpcio-health-checking
  Found existing installation: grpcio 1.0.2
    Uninstalling grpcio-1.0.2:
      Successfully uninstalled grpcio-1.0.2
  Running setup.py install for grpcio-health-checking: started
    Running setup.py install for grpcio-health-checking: finished with status 'done'
Successfully installed grpcio-1.0.3 grpcio-health-checking-1.0.2
/var/local/git/grpc/tools/run_tests/build_python.sh: line 161:  2794 Segmentation fault      (core dumped) $VENV_PYTHON -m pip install --upgrade .

FAILED: /var/local/git/grpc/tools/run_tests/build_python.sh [ret=139, pid=496]
FAILED: Some tests failed