velero: Restic restore fails for dynamically provisioned EFS volume

After having successfully performed a restic-integrated backup, and deleting the backed-up namespace, restoring the same fails. The output from the restic pod on the host shows:

time="2018-06-21T22:02:50Z" level=error msg="Error getting volume directory name" controller=pod-volume-backup error="volume not found in pod" error.file="utils.go:66" error.function=GetVolumeDirectory logSource="pkg/controller/pod_volume_backup_controller.go:158" name=nginx-example-pb4kc namespace=heptio-ark
time="2018-06-22T10:15:35Z" level=error msg="Error restoring volume" controller=pod-volume-restore error="error identifying path of volume: expected one matching path, got 0" error.file="pod_volume_backup_controller.go:295" error.function=singlePathMatch logSource="pkg/controller/pod_volume_restore_controller.go:273" name=nginx-example-20180622121532-zfcj8 namespace=heptio-ark

Here’s the full manifest of the backed up item (this was the only stuff living in the backed-up namespace):

---
apiVersion: v1
kind: Namespace
metadata:
  name: nginx-example
  labels:
    app: nginx

---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: nginx-logs
  namespace: nginx-example
  labels:
    app: nginx
spec:
  storageClassName: aws-efs
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 50Mi

---
apiVersion: apps/v1beta1
kind: Deployment
metadata:
  name: nginx-deployment
  namespace: nginx-example
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: nginx
      annotations:
        backup.ark.heptio.com/backup-volumes: nginx-logs
    spec:
      volumes:
        - name: nginx-logs
          persistentVolumeClaim:
           claimName: nginx-logs
      containers:
      - image: nginx:1.7.9
        name: nginx
        ports:
        - containerPort: 80
        volumeMounts:
          - mountPath: "/var/log/nginx"
            name: nginx-logs
            readOnly: false

---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: nginx
  name: my-nginx
  namespace: nginx-example
spec:
  ports:
  - port: 80
    targetPort: 80
  selector:
    app: nginx
  type: LoadBalancer