2015-09-09 16:47:31 ERROR juju.apiserver.common setstatus.go:167 SetStatus err #0: [{github.com/juju/juju/state/status.go:145: cannot set status} {github.com/juju/juju/state/status.go:145: unit not found}]
2015-09-09 16:47:31 ERROR juju.apiserver.common setstatus.go:172 SetStatus args=params.SetStatus{Entities:[]params.EntityStatusArgs{params.EntityStatusArgs{Tag:"unit-ubuntu-0", Status:"maintenance", Info:"installing charm software", Data:map[string]interface {}(nil)}}} result=params.ErrorResults{Results:[]params.ErrorResult{params.ErrorResult{Error:&params.Error{"not found", "cannot set status: unit not found"}}}}