pin rethinkdb requirement to 2.3.x (this needs to roughly track deployed version)
pin rethinkdb requirement to 2.3.x (this needs to roughly track deployed version)

internetarchive/brozzler,internetarchive/brozzler,nlevitt/brozzler,nlevitt/brozzler,nlevitt/brozzler,nlevitt/brozzler,internetarchive/brozzler,nlevitt/brozzler,internetarchive/brozzler