go module bug with github.com/ugorji/go

main.go

// $ ./bin/etcd -version
// etcd Version: 3.3.0+git
// Git SHA: 9113019
// Go Version: go1.11.4
// Go OS/Arch: linux/amd64

// # run etcd with default
// $ ./bin/etcd

// $ export GO111MODULE=on
// $ go mod init main
// $ go get github.com/ugorji/go/codec@none
// $ go get github.com/ugorji/go@v1.1.1
// $ go build ./...

// $ ./main
package main

import (
	"context"
	"fmt"
	"go.etcd.io/etcd/client"
	"os"
)

func main() {
	c, err := client.New(
		client.Config{
			Endpoints: []string{
				"http://localhost:2379",
			},
		})
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
	v, err := c.GetVersion(context.Background())
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
	fmt.Println(v.Server, v.Cluster)
	fmt.Println("ok")
}

when I try to connect my old server etcd , and print it's Version, client will block

$ ./etcd -version
etcd Version: 3.2.0-rc.0
Git SHA: 7e6d876
Go Version: go1.8.1
Go OS/Arch: linux/amd64