how to docker native checkpoint restore on Ubuntu14.04 15.04

release page: https://github.com/boucher/docker/releases

###example:###

https://github.com/boucher/docker/releases/tag/v1.9.0-experimental-cr.1
download: docker-1.9.0-dev

mv docker-1.9.0-dev /usr/bin/docker
root@vm1:/usr/bin# ls docker
docker

root@vm1:/usr/bin# docker -v
Docker version 1.9.0-dev, build 59c375a, experimental

root@vm1:/usr/bin# uname -a
Linux vm1 3.13.11-ckt22

**3.13 must be patched, you 'd better use 3.19. **

compile CRIU by yourself. https://criu.org/Installation

root@vm1:/usr/bin# criu -V

Version: 2.2 GitID: v2.2

###then:###

docker create -d --name test ubuntu
docker checkpoint --image-dir=/tmp/test test
docker restore --image-dir=/tmp/test test