DEBU[0750] Proxy hijack request

[bergtwvd]

Using Docker 1.10, Compose 1.6.0, and Swarm 1.1.0.

I set up a swarm with 4 nodes. The swarm master is started on node 1 with:
docker run -p 5000:2375 -it swarm --debug manage -H tcp://0.0.0.0:2375 "nodes://x.x.x.[65:68]:2375"

I set DOCKER_HOST to point to the swarm master.

Next, I do docker-compose -f myfile up

On the swarm output I see hijack messages (relating to varying hosts, see below for a sample).
And my docker-compose fails to start, with
ERROR: An HTTP request took too long to complete. Retry with --verbose to obtain debug information.

DEBU[1122] HTTP request received                         method=POST uri=/v1.22/containers/a43db3d50125043be9a4282497295632c1fc33585319fa6780761e97f74f6709/attach?stderr=1&stdin=1&stdout=1&stream=1
DEBU[1122] Proxy hijack request                          addr=x.x.x.68:2375
DEBU[1122] HTTP request received                         method=POST uri=/v1.22/containers/a43db3d50125043be9a4282497295632c1fc33585319fa6780761e97f74f6709/start
DEBU[1122] Engine update succeeded                       id=IAHG:EHW4:UEA6:QUPQ:G65M:HG5S:GEC3:GEFD:FP2J:RGSF:PPX5:2TSQ name=app-docker04.a.a.a
DEBU[1122] HTTP request received                         method=POST uri=/v1.22/containers/a43db3d50125043be9a4282497295632c1fc33585319fa6780761e97f74f6709/resize?h=25&w=92
DEBU[1122] Proxy request                                 method=POST url=http://x.x.x.68:2375/v1.22/containers/a43db3d50125043be9a4282497295632c1fc33585319fa6780761e97f74f6709/resize?h=25&w=92
DEBU[1122] HTTP request received                         method=GET uri=/v1.22/containers/a43db3d50125043be9a4282497295632c1fc33585319fa6780761e97f74f6709/json
DEBU[1126] Engine update succeeded                       id=OXJJ:ZUJ7:EEXZ:NWKT:ZEFJ:4TST:GEHK:RE2T:INW4:6EYC:A4KK:QHM7 name=app-docker02.a.a.a