Perhaps add a check to rancher-compose to check the version of the running rancher server, and issue a warning if it is not compatible with the version of rancher-compose used… (unless there is such a check already, I’ve not tested this…)
I think this is a needed feature to keep the user experience up, as we may have users that are out of our control in terms of upgrading for new releases of rancher-compose (or simply, that I miss to update rancher-compose after a new release to the server, and get confused when weird stuff starts happening… 
)