http://paste.openstack.org/show/496295/ : ContextualVersionConflict: (alembic 0.8.2.dev0 (/usr/lib/python2.7/dist-packages), Requirement.parse('alembic>=0.8.4'), set(['oslo.db']))
http:// paste.openstack .org/show/ 496295/ : ContextualVersi onConflict: (alembic 0.8.2.dev0 (/usr/lib/ python2. 7/dist- packages) , Requirement. parse(' alembic> =0.8.4' ), set(['oslo.db']))