# Pastebin rw6QqQsi
root@x1:~/keystone# tox -e py37 -v
using tox.ini: /root/keystone/tox.ini
using tox-2.3.1 from /usr/lib/python3/dist-packages/tox/__init__.py
py37 create: /root/keystone/.tox/py37
  /root/keystone/.tox$ /usr/bin/python3 -m virtualenv --python /usr/bin/python3 py37 >/root/keystone/.tox/py37/log/py37-0.log