未定义GoLang按位异或

So I just started learning GoLang. I'm trying to perform a bitwise operation XOR between two byte (uint8) numbers. Every time I run the command "go vet" I get the following error:

undefined: xˆy

My code:

package main

import (
    "fmt"
    "math"
)

func main() {
     var x byte = 1
     var y byte = 2

     fmt.Println("XOR x and y =", xˆy)    
}