Build failed. https://zuul.opendev.org/t/openstack/buildset/1b56af3cf0a84c7fa5a5b04930894555 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/fbe095d5e1cd4017aca3a1827ef40cdf : RETRY_LIMIT in 3s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/96da749d21d8440fb0e7b3364cb6f759 : SUCCESS in 3m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/bcc7d6795e2b4786a444dda740e9dad1 : RETRY_LIMIT in 3s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9388fbd361f542f1978f2b501e6ba31c : RETRY_LIMIT in 10s