When running an overnight run in dev-scripts (COMPACT_IPV4) with repeated installs I saw this panic in WaitForBootstrapComplete occur once.

level=debug msg=Agent Rest API Initialized
E1101 05:19:09.733309 1802865 runtime.go:79] Observed a panic: "invalid memory address or nil pointer dereference" (runtime error: invalid memory address or nil pointer dereference)
goroutine 1 [running]:
k8s.io/apimachinery/pkg/util/runtime.logPanic({0x4086520?, 0x1d875810})
    /home/stack/go/src/github.com/openshift/installer/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:75 +0x99
k8s.io/apimachinery/pkg/util/runtime.HandleCrash({0x0, 0x0, 0xc00056fb00?})
    /home/stack/go/src/github.com/openshift/installer/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:49 +0x75
panic({0x4086520, 0x1d875810})
    /usr/local/go/src/runtime/panic.go:838 +0x207
github.com/openshift/installer/pkg/agent.(*NodeZeroRestClient).getClusterID(0xc0001341e0)
    /home/stack/go/src/github.com/openshift/installer/pkg/agent/rest.go:121 +0x53
github.com/openshift/installer/pkg/agent.(*Cluster).IsBootstrapComplete(0xc000134190)
    /home/stack/go/src/github.com/openshift/installer/pkg/agent/cluster.go:183 +0x4fc
github.com/openshift/installer/pkg/agent.WaitForBootstrapComplete.func1()
    /home/stack/go/src/github.com/openshift/installer/pkg/agent/waitfor.go:31 +0x77
k8s.io/apimachinery/pkg/util/wait.BackoffUntil.func1(0x1d8fa901?)
    /home/stack/go/src/github.com/openshift/installer/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:157 +0x3e
k8s.io/apimachinery/pkg/util/wait.BackoffUntil(0xc0001958c0?, {0x1a53c7a0, 0xc0011d4a50}, 0x1, 0xc0001958c0)
    /home/stack/go/src/github.com/openshift/installer/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:158 +0xb6
k8s.io/apimachinery/pkg/util/wait.JitterUntil(0xc0009ab860?, 0x77359400, 0x0, 0xa?, 0x8?)
    /home/stack/go/src/github.com/openshift/installer/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:135 +0x89
k8s.io/apimachinery/pkg/util/wait.Until(...)
    /home/stack/go/src/github.com/openshift/installer/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:92
github.com/openshift/installer/pkg/agent.WaitForBootstrapComplete({0x7ffd7fccb4e3?, 0x40d7e7?})
    /home/stack/go/src/github.com/openshift/installer/pkg/agent/waitfor.go:30 +0x1bc
github.com/openshift/installer/pkg/agent.WaitForInstallComplete({0x7ffd7fccb4e3?, 0x5?})
    /home/stack/go/src/github.com/openshift/installer/pkg/agent/waitfor.go:73 +0x56
github.com/openshift/installer/cmd/openshift-install/agent.newWaitForInstallCompleteCmd.func1(0xc0003b6c80?, {0xc0004d67c0?, 0x2?, 0x2?})
    /home/stack/go/src/github.com/openshift/installer/cmd/openshift-install/agent/waitfor.go:73 +0x126
github.com/spf13/cobra.(*Command).execute(0xc0003b6c80, {0xc0004d6780, 0x2, 0x2})
    /home/stack/go/src/github.com/openshift/installer/vendor/github.com/spf13/cobra/command.go:876 +0x67b
github.com/spf13/cobra.(*Command).ExecuteC(0xc0013b0a00)
    /home/stack/go/src/github.com/openshift/installer/vendor/github.com/spf13/cobra/command.go:990 +0x3b4
github.com/spf13/cobra.(*Command).Execute(...)
    /home/stack/go/src/github.com/openshift/installer/vendor/github.com/spf13/cobra/command.go:918
main.installerMain()
    /home/stack/go/src/github.com/openshift/installer/cmd/openshift-install/main.go:61 +0x2b0
main.main()
    /home/stack/go/src/github.com/openshift/installer/cmd/openshift-install/main.go:38 +0xff
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
    panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x8 pc=0x33d3cd3]

4.12.0-0.nightly-2022-10-25-210451

Occurred on the 12th run, all previous installs were successfule

1.Set up dev-scripts for  AGENT_E2E_TEST_SCENARIO=COMPACT_IPV4, no mirroring
2. Run 'make clean; make agent' in a loop
3. After repeated installs got the failure

Panic in WaitForBootstrapComplete

No failure

It looks like clusterResult is used here even on failure, which causes the dereference - https://github.com/openshift/installer/blob/master/pkg/agent/rest.go#L121