clusterapi-manager-controllers in `CrashLoopBackOff`, bad --log-level flag about machine-api-operator HOT 3 CLOSED

$ docker run -it docker.io/openshift/origin-libvirt-machine-controllers:v4.0.0 /machine-controller-manager -help
Usage of /machine-controller-manager:
  -alsologtostderr
    	log to standard error as well as files
  -kubeconfig string
    	Paths to a kubeconfig. Only required if out-of-cluster.
  -log-level string
    	Log level (debug,info,warn,error,fatal) (default "info")
  -log_backtrace_at value
    	when logging hits line file:N, emit a stack trace
  -log_dir string
    	If non-empty, write log files in this directory
  -logtostderr
    	log to standard error instead of files
  -master string
    	The address of the Kubernetes API server. Overrides any value in kubeconfig. Only required if out-of-cluster.
  -stderrthreshold value
    	logs at or above this threshold go to stderr
  -v value
    	log level for V logs
  -vmodule value
    	comma-separated list of pattern=N settings for file-filtered logging