Removing unity8-lxc (1.0.5-0~76~ubuntu15.04.1) ...
Purging configuration files for unity8-lxc (1.0.5-0~76~ubuntu15.04.1) ...
lxc-destroy: lxccontainer.c: container_destroy: 2164 Error destroying rootfs for unity8-lxc
Destroying unity8-lxc failed
dpkg: error processing package unity8-lxc (--purge):
 subprocess installed post-removal script returned error exit status 1