Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d5c34cb76b2540c3a705b69752566ec6 : SUCCESS in 7m 23s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1f3faeaf3bc144d5a0a47843615d563f : FAILURE in 4m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ee899a8e60d44afba714ed4220e9969f : SUCCESS in 4m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e9edbb02e1c443a99da360ebfa5024a1 : SUCCESS in 5m 21s