Build failed. https://zuul.opendev.org/t/openstack/buildset/b8d525e1bb5a4732b8d4ef3c0be5bf9c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7b40a1ff331441cfa8fefd9a307bf41a : SUCCESS in 3m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e4c56624879a49368c23ec61e3536a93 : SUCCESS in 3m 49s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/86e4a0e2e6a24b53851e0c7d0c135bfd : SUCCESS in 2m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e27c4e244a8545a3aeb1365b4d87657e : FAILURE in 2m 35s