moby: Setting OOM score for ready process caused "write /proc/5578/oom_score_adj: invalid argument"

Output of docker version:

Client:
 Version:      1.12.0-rc4
 API version:  1.24
 Go version:   go1.6.2
 Git commit:   e4a0dbc
 Built:        Wed Jul 13 03:28:51 2016
 OS/Arch:      darwin/amd64
 Experimental: true

Server:
 Version:      1.12.0-rc4
 API version:  1.24
 Go version:   go1.6.2
 Git commit:   e4a0dbc
 Built:        Wed Jul 13 03:28:51 2016
 OS/Arch:      linux/amd64
 Experimental: true

Output of docker info:

Containers: 16
 Running: 7
 Paused: 0
 Stopped: 9
Images: 72
Server Version: 1.12.0-rc4
Storage Driver: aufs
 Root Dir: /var/lib/docker/aufs
 Backing Filesystem: extfs
 Dirs: 332
 Dirperm1 Supported: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: null host bridge overlay
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Security Options: seccomp
Kernel Version: 4.4.15-moby
Operating System: Alpine Linux v3.4
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 1.954 GiB
Name: moby
ID: Z3AR:3OHB:47FY:H22B:IWGM:IFLR:T7SP:IRUW:SOSA:43U6:D77Z:B2HP
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): true
 File Descriptors: 55
 Goroutines: 82
 System Time: 2016-07-27T00:02:38.724549572Z
 EventsListeners: 1
No Proxy: *.local, 169.254/16
Username: alfonsoperez
Registry: https://index.docker.io/v1/
Experimental: true
Insecure Registries:
 127.0.0.0/8

Additional environment details (AWS, VirtualBox, physical, etc.):

docker for mac

Steps to reproduce the issue:

1. docker-compose ..../docker-compose.yml up web

Describe the results you received:

ERROR: for web  oci runtime error: process_linux.go:295: setting oom score for ready process caused "write /proc/5578/oom_score_adj: invalid argument"

Describe the results you expected:

Starting the container

Additional information you deem important (e.g. issue happens only occasionally):

Tried restarting docker / removing the containers several times