Go interface issue

err.go

package main

import "fmt"

type MyError struct {
	Message string
}

func (m *MyError) Error() string {
	return m.Message
}

func errorMaker() error {
	return nil
}

func myErrorMaker() (int, *MyError) {
	return 1, nil
}

func main() {
	err := errorMaker()
	if err != nil {
		fmt.Println("Error:", err)
	} else {
		fmt.Println("No error")
	}

  // will only be broken if myErrorMaker() returns more than 1 value
	x, err := myErrorMaker()
	if err != nil {
		fmt.Println("Error:", err)
	} else {
		fmt.Println("No error:", x)
	}
}