found 837281 2.5.1-0 thanks I can still reproduce the error reported by Lucas in this version.
I attach a build log for 2.5.1-0. I think this could be a bug in openstack-dashboard, one of the build-depends. If this is really the case, please use reassign and affects so that we can see the bug in the page for src:manila-ui and this way we avoid filing duplicate bugs. Thanks.