Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a15c1d8068734ddcb39e5962af9dc588 : SUCCESS in 4m 24s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2ffd007a45544f89ace9035861cce755 : FAILURE in 2m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e809732f3fd74502a41ceccf9caeaf0e : SUCCESS in 3m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/17b21c38e8e94413b71891b5fe286008 : SUCCESS in 2m 56s