couchbase-operator panics when CouchbaseCluster exists

{"level":"info","ts":1614874825.852879,"logger":"main","msg":"couchbase-operator","version":"2.1.0 (build 250)","revision":"b561a46fd687d668631596b3b2588ddca6457409"}\{"level":"info","ts":1614874825.852879,"logger":"main","msg":"couchbase-operator","version":"2.1.0 (build 250)","revision":"b561a46fd687d668631596b3b2588ddca6457409"}{"level":"info","ts":1614874827.3082435,"logger":"controller-runtime.metrics","msg":"metrics server is starting to listen","addr":"0.0.0.0:8383"}I0304 16:20:27.308880       1 leaderelection.go:242] attempting to acquire leader lease  shared/couchbase-operator...\{"level":"info","ts":1614874827.3089359,"logger":"controller-runtime.manager","msg":"starting metrics server","path":"/metrics"}I0304 16:20:44.715535       1 leaderelection.go:252] successfully acquired lease shared/couchbase-operator\{"level":"info","ts":1614874844.715822,"logger":"controller-runtime.controller","msg":"Starting EventSource","controller":"couchbase-controller","source":"kind source: /, Kind="}{"level":"info","ts":1614874844.816188,"logger":"controller-runtime.controller","msg":"Starting Controller","controller":"couchbase-controller"}\{"level":"info","ts":1614874844.8162923,"logger":"controller-runtime.controller","msg":"Starting workers","controller":"couchbase-controller","worker count":4}{"level":"info","ts":1614874861.8298838,"logger":"cluster","msg":"Watching new cluster","cluster":"shared/couchbase"}\{"level":"info","ts":1614874861.8299353,"logger":"cluster","msg":"Couchbase client starting","cluster":"shared/couchbase"}{"level":"info","ts":1614874861.8300164,"logger":"cluster","msg":"Janitor starting","cluster":"shared/couchbase"}\{"level":"info","ts":1614874861.8423789,"logger":"cluster","msg":"Upgrading resource","cluster":"shared/couchbase","kind":"pod","name":"couchbase-backup-incremental-1614495600-prl7t","version":"1.2.0"}E0304 16:21:01.842463       1 runtime.go:78] Observed a panic: "assignment to entry in nil map" (assignment to entry in nil map)goroutine 283 [running]:k8s.io/apimachinery/pkg/util/runtime.logPanic(0x14ca760, 0x1867110) /home/couchbase/go/pkg/mod/k8s.io/apimachinery@v0.17.5-beta.0/pkg/util/runtime/runtime.go:74 +0xa3k8s.io/apimachinery/pkg/util/runtime.HandleCrash(0x0, 0x0, 0x0) /home/couchbase/go/pkg/mod/k8s.io/apimachinery@v0.17.5-beta.0/pkg/util/runtime/runtime.go:48 +0x82panic(0x14ca760, 0x1867110) /usr/local/go/1.13.3/go/src/runtime/panic.go:679 +0x1b2github.com/couchbase/couchbase-operator/pkg/cluster.upgradePodFrom000000To010200(0xc000686540, 0xc0005d8000, 0x8, 0x8) /home/couchbase/jenkins/workspace/couchbase-k8s-microservice-build/couchbase-operator/pkg/cluster/operator_upgrade_pod.go:103 +0x5agithub.com/couchbase/couchbase-operator/pkg/cluster.(*podUpgradableResource).perform(0xc00077fec0, 0x0, 0x0, 0xc0008f3400, 0x8) /home/couchbase/jenkins/workspace/couchbase-k8s-microservice-build/couchbase-operator/pkg/cluster/operator_upgrade_pod.go:83 +0x68github.com/couchbase/couchbase-operator/pkg/cluster.(*Cluster).operatorUpgrade(0xc000686540, 0x0, 0x0) /home/couchbase/jenkins/workspace/couchbase-k8s-microservice-build/couchbase-operator/pkg/cluster/operator_upgrade.go:155 +0x83fgithub.com/couchbase/couchbase-operator/pkg/cluster.New(0x7ffe89e4708c, 0x5, 0xc000245400, 0xc00068bec0, 0x2, 0x2) /home/couchbase/jenkins/workspace/couchbase-k8s-microservice-build/couchbase-operator/pkg/cluster/cluster.go:208 +0x55bgithub.com/couchbase/couchbase-operator/pkg/controller.(*CouchbaseClusterReconciler).Reconcile(0xc0004db530, 0xc00001ca0a, 0x6, 0xc00001c9f4, 0x9, 0xc000379c00, 0x1, 0xc000379cc8, 0x46db68) /home/couchbase/jenkins/workspace/couchbase-k8s-microservice-build/couchbase-operator/pkg/controller/controller.go:74 +0xbc8sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler(0xc00035e000, 0x151b340, 0xc000583280, 0x0) /home/couchbase/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.5.0/pkg/internal/controller/controller.go:256 +0x162sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem(0xc00035e000, 0x0) /home/couchbase/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.5.0/pkg/internal/controller/controller.go:232 +0xcbsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).worker(0xc00035e000) /home/couchbase/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.5.0/pkg/internal/controller/controller.go:211 +0x2bk8s.io/apimachinery/pkg/util/wait.JitterUntil.func1(0xc000683f60) /home/couchbase/go/pkg/mod/k8s.io/apimachinery@v0.17.5-beta.0/pkg/util/wait/wait.go:152 +0x5ek8s.io/apimachinery/pkg/util/wait.JitterUntil(0xc000683f60, 0x3b9aca00, 0x0, 0x1, 0xc00009a180) /home/couchbase/go/pkg/mod/k8s.io/apimachinery@v0.17.5-beta.0/pkg/util/wait/wait.go:153 +0xf8k8s.io/apimachinery/pkg/util/wait.Until(0xc000683f60, 0x3b9aca00, 0xc00009a180) /home/couchbase/go/pkg/mod/k8s.io/apimachinery@v0.17.5-beta.0/pkg/util/wait/wait.go:88 +0x4dcreated by sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func1 /home/couchbase/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.5.0/pkg/internal/controller/controller.go:193 +0x328panic: assignment to entry in nil map [recovered] panic: assignment to entry in nil map

goroutine 283 [running]:k8s.io/apimachinery/pkg/util/runtime.HandleCrash(0x0, 0x0, 0x0) /home/couchbase/go/pkg/mod/k8s.io/apimachinery@v0.17.5-beta.0/pkg/util/runtime/runtime.go:55 +0x105panic(0x14ca760, 0x1867110) /usr/local/go/1.13.3/go/src/runtime/panic.go:679 +0x1b2github.com/couchbase/couchbase-operator/pkg/cluster.upgradePodFrom000000To010200(0xc000686540, 0xc0005d8000, 0x8, 0x8) /home/couchbase/jenkins/workspace/couchbase-k8s-microservice-build/couchbase-operator/pkg/cluster/operator_upgrade_pod.go:103 +0x5agithub.com/couchbase/couchbase-operator/pkg/cluster.(*podUpgradableResource).perform(0xc00077fec0, 0x0, 0x0, 0xc0008f3400, 0x8) /home/couchbase/jenkins/workspace/couchbase-k8s-microservice-build/couchbase-operator/pkg/cluster/operator_upgrade_pod.go:83 +0x68github.com/couchbase/couchbase-operator/pkg/cluster.(*Cluster).operatorUpgrade(0xc000686540, 0x0, 0x0) /home/couchbase/jenkins/workspace/couchbase-k8s-microservice-build/couchbase-operator/pkg/cluster/operator_upgrade.go:155 +0x83fgithub.com/couchbase/couchbase-operator/pkg/cluster.New(0x7ffe89e4708c, 0x5, 0xc000245400, 0xc00068bec0, 0x2, 0x2) /home/couchbase/jenkins/workspace/couchbase-k8s-microservice-build/couchbase-operator/pkg/cluster/cluster.go:208 +0x55bgithub.com/couchbase/couchbase-operator/pkg/controller.(*CouchbaseClusterReconciler).Reconcile(0xc0004db530, 0xc00001ca0a, 0x6, 0xc00001c9f4, 0x9, 0xc000379c00, 0x1, 0xc000379cc8, 0x46db68) /home/couchbase/jenkins/workspace/couchbase-k8s-microservice-build/couchbase-operator/pkg/controller/controller.go:74 +0xbc8sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler(0xc00035e000, 0x151b340, 0xc000583280, 0x0) /home/couchbase/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.5.0/pkg/internal/controller/controller.go:256 +0x162sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem(0xc00035e000, 0x0) /home/couchbase/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.5.0/pkg/internal/controller/controller.go:232 +0xcbsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).worker(0xc00035e000) /home/couchbase/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.5.0/pkg/internal/controller/controller.go:211 +0x2bk8s.io/apimachinery/pkg/util/wait.JitterUntil.func1(0xc000683f60) /home/couchbase/go/pkg/mod/k8s.io/apimachinery@v0.17.5-beta.0/pkg/util/wait/wait.go:152 +0x5ek8s.io/apimachinery/pkg/util/wait.JitterUntil(0xc000683f60, 0x3b9aca00, 0x0, 0x1, 0xc00009a180) /home/couchbase/go/pkg/mod/k8s.io/apimachinery@v0.17.5-beta.0/pkg/util/wait/wait.go:153 +0xf8k8s.io/apimachinery/pkg/util/wait.Until(0xc000683f60, 0x3b9aca00, 0xc00009a180) /home/couchbase/go/pkg/mod/k8s.io/apimachinery@v0.17.5-beta.0/pkg/util/wait/wait.go:88 +0x4dcreated by sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func1 /home/couchbase/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.5.0/pkg/internal/controller/controller.go:193 +0x328