message: Return non-zero status when deletion fails.
diff: @@ -127,6 +127,7 @@ function ctpu_delete {
  --zone="${TPU_ZONE}" \
  --name="${TPU_NAME}" \
  --tpu-only \
  - -noconf && break || sleep 60
  + -noconf && return 0 || sleep 60
  done
  + return 1
  }
  