安装 kolla 报错？

python-novaclient, python-openstackclient, snowballstemmer, alabaster, sphinx-rtd-theme, Pygments, sphinx, testrepository, testscenarios
Found existing installation: MarkupSafe 0.11

Uninstalling MarkupSafe-0.11:
  Successfully uninstalled MarkupSafe-0.11

Found existing installation: Jinja2 2.7.2

Uninstalling Jinja2-2.7.2:
  Successfully uninstalled Jinja2-2.7.2

Running setup.py install for smmap ... done
Running setup.py install for gitdb ... done
Found existing installation: Babel 0.9.6

Uninstalling Babel-0.9.6:
  Successfully uninstalled Babel-0.9.6

Running setup.py install for wrapt ... done
Found existing installation: setuptools 0.9.8

Uninstalling setuptools-0.9.8:
  Successfully uninstalled setuptools-0.9.8

Running setup.py install for restructuredtext-lint ... done
Running setup.py install for mccabe ... done
Running setup.py install for pyinotify ... done
Running setup.py install for dogpile.cache ... done
Found existing installation: ipaddress 1.0.16
Cannot uninstall 'ipaddress'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.