Build failed. https://zuul.opendev.org/t/openstack/buildset/4478dc3b0c9c462d80c1e3c9c5b729cb - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/934a64e59d0e48be9079b0753512e804 : SUCCESS in 3m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/197282f7a86643878fe8e62dacfc38de : FAILURE in 2m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/39f8da70eafa43709a85701bf6f8add4 : SUCCESS in 2m 55s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/60049be596184368bd98c8674d6f1475 : FAILURE in 3m 15s