Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/172b1286e9fd40c6afe72207b55e6b82 : SUCCESS in 4m 32s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f92e683ab2cf46f3b5c6b6e408c6d344 : SUCCESS in 5m 00s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c07ad847739c45e1bc610deb4828df68 : SUCCESS in 4m 52s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/298275630c074aa2b5cfc098f804776c : FAILURE in 6m 12s