Release upgrades work by downloading a tarball of ubuntu-release-upgrader for the release that you are upgrading to and the code affected here (apt-clone) is included in that tarbarll, so it does not need to be fixed in Raring. apt-clone in the release upgrader has been updated so this should just work now.
Release upgrades work by downloading a tarball of ubuntu- release- upgrader for the release that you are upgrading to and the code affected here (apt-clone) is included in that tarbarll, so it does not need to be fixed in Raring. apt-clone in the release upgrader has been updated so this should just work now.