Flaky TestAuthGracefulDisable

[ahrtr]

Which Github Action / Prow Jobs are flaking?

/home/prow/go/src/github.com/etcd-io/etcd/bin/etcdctl (/home/prow/go/src/github.com/etcd-io/etcd/bin/etcdctl_--endpoints=http://localhost:20000_--user=root:rootPassword_put_key_value) (70444): {"level":"warn","ts":"2025-01-17T16:05:05.504875Z","logger":"etcd-client","caller":"[email protected]/retry_interceptor.go:65","msg":"retrying of unary invoker failed","target":"etcd-endpoints://0x40002ab0e0/localhost:20000","method":"/etcdserverpb.Auth/Authenticate","attempt":0,"error":"rpc error: code = FailedPrecondition desc = etcdserver: authentication is not enabled"}
/home/prow/go/src/github.com/etcd-io/etcd/bin/etcdctl (/home/prow/go/src/github.com/etcd-io/etcd/bin/etcdctl_--endpoints=http://localhost:20000_--user=root:rootPassword_put_key_value) (70444): OK
    auth_test.go:127: 
        	Error Trace:	/home/prow/go/src/github.com/etcd-io/etcd/tests/common/auth_test.go:127
        	            				/home/prow/go/src/github.com/etcd-io/etcd/tests/framework/testutils/execute.go:38
        	            				/usr/local/go/src/runtime/asm_arm64.s:1223
        	Error:      	Received unexpected error:
        	            	closed watcher channel should not block
        	Test:       	TestAuthGracefulDisable
        	Messages:   	failed to get key-values from watch channel closed watcher channel should not block
    logger.go:146: 2025-01-17T16:05:07.175Z	INFO	closing test cluster...
    logger.go:146: 2025-01-17T16:05:07.175Z	INFO	stopping server...	{"name": "TestAuthGracefulDisable-test-0"}

Refer to https://prow.k8s.io/view/gs/kubernetes-ci-logs/pr-logs/pull/etcd-io_etcd/19222/pull-etcd-e2e-arm64/1880279512420192256

Which tests are flaking?

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Github Action / Prow Job link

No response

Reason for failure (if possible)

No response

Anything else we need to know?

No response