W0429 15:37:51.967871       1 deprecated.go:66] 
==== Removed Flag Warning ======================

logtostderr is removed in the k8s upstream and has no effect any more.

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I0429 15:37:51.968354       1 kube-rbac-proxy.go:235] Valid token audiences: 
I0429 15:37:51.969570       1 kube-rbac-proxy.go:349] Reading certificate files
I0429 15:37:51.969981       1 kube-rbac-proxy.go:397] Starting TCP socket on :8443
I0429 15:37:51.970283       1 kube-rbac-proxy.go:404] Listening securely on :8443
E0429 15:40:20.862332       1 auth.go:47] Unable to authenticate the request due to an error: context canceled