Hi, In the last two days the ceilometer [1] [2] [3] and tooz [4] [5] [6] tox-py27 periodic stable jobs are failing. The root cause is the following: * cmd2 released version 0.9.0, which requires python >=3.4 from now on. These projects have comment in their tox.ini that they do not consume upper-constraints.txt (in which there is an upper constraints for cmd2). My question is: could we use upper-constraints.txt on these projects as well, or is there any reason why it isn't the case? Of course an entry could be added to test-requirements.txt with "cmd2<0.9.0", but wouldn't it be better to use the upper-constraints.txt? Thanks in advance, Előd [1] http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/ceilometer/stable/queens/openstack-tox-py27/b44c7cd/ [2] http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/ceilometer/stable/pike/openstack-tox-py27/6c4fd5d/ [3] http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/ceilometer/stable/ocata/openstack-tox-py27/4d2d0b3/ [4] http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/tooz/stable/queens/openstack-tox-py27/37bd360/ [5] http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/tooz/stable/pike/openstack-tox-py27/8bb8c29/ [6] http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/tooz/stable/ocata/openstack-tox-py27/1016d56/