gorethink: could not decode type []uint8 into Go value of type string

[kke]

Ran the tutorial, got this:

$ SYSTEM_SECRET=passwordtutorial DOCKER_IP=localhost docker-compose up
....
hydra_1      | time="2016-07-21T07:41:55Z" level=info msg="Connected to RethinkDB!"
hydra_1      | time="2016-07-21T07:41:55Z" level=fatal msg="Could not fetch initial state: gorethink: could not decode type []uint8 into Go value of type string"
hydra_1      | time="2016-07-21T07:41:58Z" level=info msg="DATABASE_URL set, connecting to RethinkDB."

[kke]

Looks like I had some leftovers from before, running docker-compose down and docker-compose rm fixed it.