Build failed. https://zuul.opendev.org/t/openstack/buildset/c585c98dac71435fada8f7f0c81725bd - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3f65ae232fc74383b1cf90aa9b5dc810 : SUCCESS in 3m 17s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0f181756d8cc406d9eac801f0a0949f7 : SUCCESS in 3m 54s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0e1ebf3eb972476b9e22416b84bcdcc8 : SUCCESS in 2m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a50d31a6e2064809976384a91586e331 : FAILURE in 3m 24s