milvus: [Bug]: Proxy ut fails to run

Is there an existing issue for this?

• I have searched the existing issues

Environment

- Milvus version:
- Deployment mode(standalone or cluster):
- SDK version(e.g. pymilvus v2.0.0rc2):
- OS(Ubuntu or CentOS): 
- CPU/Memory: 
- GPU: 
- Others:

Current Behavior

proxy ut failed. https://github.com/milvus-io/milvus/runs/6959508267?check_suite_focus=true

PASS
2022-06-20T02:35:32.4784065Z coverage: 42.2% of statements in ./...
2022-06-20T02:35:32.5013748Z corrupted double-linked list
2022-06-20T02:35:32.5038271Z SIGABRT: abort
2022-06-20T02:35:32.5038580Z PC=0x7f186c608e87 m=7 sigcode=18446744073709551610
2022-06-20T02:35:32.5038761Z 
2022-06-20T02:35:32.5038875Z goroutine 1 [running]:
2022-06-20T02:35:32.5039135Z runtime: unknown pc 0x7f186c608e87
2022-06-20T02:35:32.5039462Z stack: frame={sp:0x7f180fff92f0, fp:0x0} stack=[0xc000faa000,0xc000fac000)
2022-06-20T02:35:32.5039677Z 
2022-06-20T02:35:32.5039805Z runtime: unknown pc 0x7f186c608e87
2022-06-20T02:35:32.5040113Z stack: frame={sp:0x7f180fff92f0, fp:0x0} stack=[0xc000faa000,0xc000fac000)
2022-06-20T02:35:32.5040324Z 
2022-06-20T02:35:32.5040356Z 
2022-06-20T02:35:32.5040472Z goroutine 65 [chan receive]:
2022-06-20T02:35:32.5040807Z github.com/panjf2000/ants/v2.(*Pool).purgePeriodically(0xc0001380e0)
2022-06-20T02:35:32.5041176Z 	/go/pkg/mod/github.com/panjf2000/ants/v2@v2.4.8/pool.go:69 +0x247
2022-06-20T02:35:32.5041508Z created by github.com/panjf2000/ants/v2.NewPool
2022-06-20T02:35:32.5041842Z 	/go/pkg/mod/github.com/panjf2000/ants/v2@v2.4.8/pool.go:137 +0x4da
2022-06-20T02:35:32.5042050Z 
2022-06-20T02:35:32.5058210Z goroutine 540 [select]:
2022-06-20T02:35:32.5058558Z google.golang.org/grpc.(*ccBalancerWrapper).watcher(0xc000c93600)
2022-06-20T02:35:32.5058964Z 	/go/pkg/mod/google.golang.org/grpc@v1.38.0/balancer_conn_wrappers.go:69 +0x197
2022-06-20T02:35:32.5059357Z created by google.golang.org/grpc.newCCBalancerWrapper
2022-06-20T02:35:32.5059749Z 	/go/pkg/mod/google.golang.org/grpc@v1.38.0/balancer_conn_wrappers.go:60 +0x2fc

Expected Behavior

proxy ut run successfully.

Steps To Reproduce

go test -race -v -coverpkg=./... -coverprofile=profile.out -covermode=atomic ./internal/proxy

Milvus Log

https://github.com/milvus-io/milvus/runs/6959508267?check_suite_focus=true

Anything else?

No response