Build failed. https://zuul.opendev.org/t/openstack/buildset/f497091d43304e9cbfcdd7c1324ad3d1 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/75456be81dc44823bb0ca5b8f343ef18 : SUCCESS in 2m 58s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/246cedb32691429fac5c5d5586ee00d9 : FAILURE in 3m 41s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3cd2c7c6127d421486d991ec0cb2630b : SUCCESS in 3m 37s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b3adb690833c4eb0b1a5e26fe9d1e6a0 : SUCCESS in 3m 30s