Build failed. https://zuul.opendev.org/t/openstack/buildset/8bafd41599aa44d1ab8f7e05cc31c8db - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b3a674658ee54b9f974034c0aac1fade : FAILURE in 4m 06s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7eeaf2a132f645998cb6729618af5903 : FAILURE in 3m 44s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/705af341ecec43ca9ee81999fab51c03 : FAILURE in 3m 52s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/03f3f75ac66c4b0b8f0a29b8bc8e98bf : FAILURE in 3m 48s