Build failed. https://zuul.opendev.org/t/openstack/buildset/c8ba6040cb364e779b2546a7a5080677 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/bd306b1941ef487c9dd793b7cc05c90d : SUCCESS in 4m 39s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d78d40635adb4f4588023e44bfedcbac : SUCCESS in 5m 18s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/be5a6008aa04474d9dfddc10403e0dc7 : SUCCESS in 5m 04s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/965a8364217044a0bd9be2c66585d3d1 : FAILURE in 4m 19s