Comment 1 for bug 1430791

We have logs from the aws-upgrade-trusty-amd64 env that was left running. We can see

2015-03-11 08:41:50 INFO juju.worker.upgrader upgrader.go:152 upgrade requested from 1.21.3-trusty-amd64 to 1.23-alpha1
...
<panics start after 2015-03-11 08:42:04>
...
2015-03-11 08:48:14 INFO juju.cmd.jujud upgrade.go:329 starting upgrade from 1.21.3 to 1.23-alpha1 for "machine-0"
...
2015-03-11 08:48:15 INFO juju.cmd.jujud upgrade.go:199 upgrade to 1.23-alpha1 completed successfully.

The upgrade of the state-server did happen in about 7 minutes.