Just to note that I'm currently unable to run nova unit tests locally on Fedora 29 without downgrading my sqlite package. The error I'm seeing is: sqlalchemy.exc.NoSuchTableError: migration_tmp The root cause appears to be a change in 3.26.0 which is breaking sqlalchemy-migrate, as noted here: https://bugs.launchpad.net/ubuntu/+source/nova/+bug/1807262 Corey Bryant has proposed the patch for this patch, linked below, which should resolve this. Any chance an sqlalchemy-migrate core could look at this before I reach the point of not being able to downgrade my sqlite package and run nova unit tests? :) https://review.openstack.org/#/c/623564/5 Stephen