Build failed. https://zuul.opendev.org/t/openstack/buildset/721dc80f8a51403db44d7e352ce52781 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c500e3a5f552470f8ff21790e7c5e6db : SUCCESS in 3m 11s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0ca1c245d6f44e7694fbbd1d92867e32 : SUCCESS in 2m 50s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ef9e4221db76465589bf14493f3daf79 : SUCCESS in 3m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0ca32b87620d4477b82226c832343a40 : FAILURE in 2m 39s