Build failed. https://zuul.opendev.org/t/openstack/buildset/cecab95ee2a943c79a49a779231ea0de - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b412dfb7bcf2425caa64b04a6c86703d : SUCCESS in 3m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4c6e12a0cb064fedb37ac5789eb72a1c : SUCCESS in 2m 43s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8960e57249fc4c059dc58bb2e9aed62e : FAILURE in 3m 04s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b665ebb81dcb46b1a29ce73f8702f6d0 : FAILURE in 3m 25s