We have a check that prevents seeds from being run if there are pending migrations. However, this check only checked Foreman's own migrations and completely disregarded plugins' migrations. This bit us in nightlies (and possibly 3.3 rc1). To quickly solve this, we started explicitly checking for plugins' pending migrations too. It is quite possible there is a way to fix this in a more standard way. Let's revisit this and see what can be done