Can't reconstruct all tarballs using pristine-tar

Building using working tree
Looking for a way to retrieve the upstream tarball
Using pristine-tar to reconstruct the needed tarball.
tar: gwibber-1.2.0~bzr346/.bzrignore: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors
pristine-tar: command failed: tar cf /tmp/pristine-tar.vaWLeDgMYS/recreatetarball --owner 0 --group 0 --numeric-owner -C /tmp/pristine-tar.vaWLeDgMYS/workdir --no-recursion --mode 0644 --files-from /tmp/pristine-tar.vaWLeDgMYS/manifest
bzr: ERROR: There was an error using pristine-tar: Generating tar from delta failed: None.
zsh: exit 3 bzr bd -S

We strip some things from the tarball, and so can't provide a whole
tree.

We should fix both importing and exporting I guess:

  1) either make sure we give the same tree we will give at the end and let pristine-tar
      sort it out, or don't store pristine-tar data
  2) don't give up if pristine tar fails

Thanks,

James