% (cd tests && go vet ./...)
stderr: # go.etcd.io/etcd/tests/v3/integration/clientv3/concurrency_test
stderr: integration/clientv3/concurrency/election_test.go:74:6: call to (*T).Fatal from a non-test goroutine
stderr: integration/clientv3/concurrency/mutex_test.go:57:4: call to (*T).Fatal from a non-test goroutine