docker version

core@ip-10-168-178-138 ~ $ docker version
Client version: 0.7.1
Go version (client): go1.1.2
Git commit (client): 88df052
2013/12/09 19:17:06 dial unix /var/run/docker.sock: no such file or directory

-- Logs begin at Mon 2013-12-09 19:07:30 UTC, end at Mon 2013-12-09 20:05:04 UTC. --
Dec 09 19:07:36 localhost systemd[1]: Starting Docker Application Container Engine...
Dec 09 19:07:36 localhost systemd[1]: Started Docker Application Container Engine.
Dec 09 19:07:37 localhost docker[343]: [/var/lib/docker|adcc86c9] +job initapi()
Dec 09 19:07:37 localhost docker[343]: [/var/lib/docker|adcc86c9.initapi()] Creating server
Dec 09 19:08:15 ip-10-168-178-138 docker[343]: open /var/lib/docker/aufs/layers/ec0fc19ab1b079c7709aa9ffaf5a4858665747d6b523b4b5891d3db90391d69e: no such file or directory[/var/lib/docker|ad
Dec 09 19:08:15 ip-10-168-178-138 docker[343]: 2013/12/09 19:08:15 initapi: open /var/lib/docker/aufs/layers/ec0fc19ab1b079c7709aa9ffaf5a4858665747d6b523b4b5891d3db90391d69e: no such file or
Dec 09 19:08:15 ip-10-168-178-138 systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE
Dec 09 19:08:15 ip-10-168-178-138 systemd[1]: Unit docker.service entered failed state.
-- Reboot --
Dec 09 19:18:15 localhost systemd[1]: Starting Docker Application Container Engine...
Dec 09 19:18:16 localhost systemd[1]: Started Docker Application Container Engine.
Dec 09 19:18:16 localhost docker[335]: [/var/lib/docker|9f5e6793] +job initapi()
Dec 09 19:18:16 localhost docker[335]: [/var/lib/docker|9f5e6793.initapi()] Creating server
Dec 09 19:19:20 ip-10-168-178-138 docker[335]: EOF[/var/lib/docker|9f5e6793] -job initapi() = ERR (1)
Dec 09 19:19:20 ip-10-168-178-138 docker[335]: 2013/12/09 19:19:20 initapi: EOF
Dec 09 19:19:21 ip-10-168-178-138 systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE
Dec 09 19:19:21 ip-10-168-178-138 systemd[1]: Unit docker.service entered failed state.