Build failed. https://zuul.opendev.org/t/openstack/buildset/bb556358bdc742c6956d5bbe2641fc9d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/aeb14e0f235d42ec8902bee5b9fad419 : FAILURE in 6m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/197792d82e1544cbb3bb80b8751e2f05 : SUCCESS in 10m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/05cd97f595d74c949018c3af3d35f3d0 : SUCCESS in 6m 53s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c927446f71e34e3fa5ce64bfaeb62bf6 : SUCCESS in 6m 06s