W0512 02:14:20.260649       1 deprecated.go:66] 
==== Removed Flag Warning ======================

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

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I0512 02:14:20.260953       1 kube-rbac-proxy.go:233] Valid token audiences: 
I0512 02:14:20.261682       1 kube-rbac-proxy.go:347] Reading certificate files
I0512 02:14:20.261857       1 kube-rbac-proxy.go:395] Starting TCP socket on :8443
I0512 02:14:20.262023       1 kube-rbac-proxy.go:402] Listening securely on :8443
E0512 04:11:06.589895       1 auth.go:47] Unable to authenticate the request due to an error: context canceled
E0512 04:11:16.590313       1 auth.go:47] Unable to authenticate the request due to an error: context canceled