It seems like this is a stacking, one of the ones fixxed recently? A workaround is to clone into a shared repository in which you have already checked out lp:unity:
$ bzr init-repo unity $ bzr branch lp:unity unity/trunk $ bzr co lp:~ubuntu-desktop/unity/ubuntu unity/ubuntu -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/839515 Title: bzr crashed with BzrCheckError in _commit_write_group(): Internal check failed: Cannot add revision(s) to repository: missing referenced chk root keys: [StaticTuple('sha1:3c52a9038699157dee61f9bd1b03d255fa021805',)] To manage notifications about this bug go to: https://bugs.launchpad.net/bzr/+bug/839515/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
