Docker restart hangs - verison 1.13.0

time=“2017-07-14T11:36:53.190567470+10:00” level=error msg="Handler for POST /v1.25/containers/subversion/start returned error: Container already started"
time=“2017-07-14T11:38:59.047885446+10:00” level=error msg="Handler for POST /v1.25/containers/subversion/start returned error: Container already started"
time=“2017-07-14T11:39:21.935409231+10:00” level=error msg=“Handler for POST /v1.25/containers/subversion/start returned error: Container already started”

docker exec -it subversion /bin/bash
rpc error: code = 2 desc = oci runtime error: exec failed: container_linux.go:247: starting container process caused "process_linux.go:83: executing setns process caused “exit status 15"”

It happens quite frequently, not sure whats the reason … but we are having hard time in handling these kind of situations … that only option is to bounce the docker host itsels.

Containers: 13
Running: 12
Paused: 0
Stopped: 1
Images: 339
Server Version: 1.13.0
Storage Driver: aufs
Root Dir: /var/lib/docker/aufs
Backing Filesystem: extfs
Dirs: 320
Dirperm1 Supported: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Volume: local
Network: bridge host macvlan null overlay
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 03e5862ec0d8d3b3f750e19fca3ee367e13c090e
runc version: 2f7393a47307a16f8cee44a37b262e8b81021e3e
init version: 949e6fa
Security Options:
Kernel Version: 3.16.0-59-generic
Operating System: Ubuntu 14.04.5 LTS
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 15.62 GiB