[jujucharms.com:jamesbeedy@external/common-infrastructure] ubuntu@ip-10-20-100-90:~ 
$ juju users --debug
18:46:27 INFO  juju.cmd supercommand.go:63 running juju [2.0.2 gc go1.6.2]
18:46:27 DEBUG juju.cmd supercommand.go:64   args: []string{"juju", "users", "--debug"}
18:46:27 INFO  juju.juju api.go:72 connecting to API addresses: [jimm.jujucharms.com:443 162.213.33.250:443 162.213.33.28:443]
18:46:27 INFO  juju.api apiclient.go:530 dialing "wss://jimm.jujucharms.com:443/api"
18:46:27 INFO  juju.api apiclient.go:530 dialing "wss://162.213.33.250:443/api"
18:46:27 INFO  juju.api apiclient.go:530 dialing "wss://162.213.33.28:443/api"
18:46:27 INFO  juju.api apiclient.go:539 error dialing "wss://162.213.33.250:443/api": websocket.Dial wss://162.213.33.250:443/api: x509: cannot validate certificate for 162.213.33.250 because it doesn't contain any IP SANs
18:46:27 INFO  juju.api apiclient.go:539 error dialing "wss://162.213.33.28:443/api": websocket.Dial wss://162.213.33.28:443/api: x509: cannot validate certificate for 162.213.33.28 because it doesn't contain any IP SANs
18:46:28 INFO  juju.api apiclient.go:466 connection established to "wss://jimm.jujucharms.com:443/api"
18:46:28 DEBUG juju.juju api.go:263 API hostnames unchanged - not resolving
18:46:28 ERROR cmd supercommand.go:458 unknown object type "UserManager" (not implemented)
18:46:28 DEBUG cmd supercommand.go:459 (error details: [{github.com/juju/juju/api/usermanager/client.go:135: } {github.com/juju/juju/api/apiclient.go:605: } {github.com/juju/retry/retry.go:187: } {github.com/juju/juju/rpc/client.go:149: } {unknown object type "UserManager" (not implemented)}])