`minikube start` doesn't stop after download failure due to network issues

I'm testing the minikube network connection issues in China and happened to find there is a potential bug:

After all image fallback addresses failed, minikube didn't stop to the process as expected, and failed later due to lack of valid images.

Steps to reproduce the issue: os version: macOs catalina 10.15.7 minikube version: v1.16.0 commit: 9f1e482427589ff8451c4723b6ba53bb9742fbb1

minikube start --driver=virtualbox --v=1 --alsologtostderr

Full output of failed command: I0114 22:46:46.233396 10344 cache.go:159] failed to download docker.pkg.github.com/kubernetes/minikube/kicbase:v0.0.15-snapshot4, will try fallback image if available: GET https://docker.pkg.github.com/v2/kubernetes/minikube/kicbase/manifests/v0.0.15-snapshot4: UNAUTHORIZED: GitHub Docker Registry needs login E0114 22:46:46.233427 10344 cache.go:180] Error downloading kic artifacts: failed to download kic base image or any fallback image I0114 22:46:46.233444 10344 cache.go:185] Successfully downloaded all kic artifacts I0114 22:46:46.233473 10344 start.go:314] acquiring machines lock for minikube: {Name:mkb987fd896c2845336bd726163c7ebf1c4ecf2e Clock:{} Delay:500ms Timeout:10m0s Cancel:} I0114 22:46:46.233601 10344 start.go:318] acquired machines lock for "minikube" in 114.554µs I0114 22:46:46.233634 10344 start.go:90] Provisioning new machine with config: &{Name:minikube KeepContext:false EmbedCerts:false MinikubeISO: KicBaseImage:registry.cn-hangzhou.aliyuncs.com/google_containers/kicbase:v0.0.15-snapshot4@sha256:ef1f485b5a1cfa4c989bc05e153f0a8525968ec999e242efff871cbb3

I checked the master code:

In pkg/minikube/node/cache.go, in function "beginDownloadKicBaseImage", if all fallback addresses fails, it returns:

fmt.Errorf("failed to download kic base image or any fallback image")

I think it should wrap the type of the error here, so the function "waitDownloadKicBaseImage" could go to the desired branch and exit.