Show failure of go tool compiling large map literal

makeGroup.sh

#!/bin/sh
for fname in $(seq 1 $1); do
        echo "\"$fname\" : {"
        echo "name : \"$fname\","
        echo "Weight : 50,"
        echo "Emails : []string {"
        echo "},"
        echo "},"
done

topgroup.go

package main

import "log"

func main() {
        log.Printf("groups = %d",len(groups))
}

type Group struct {
        name string
        Weight int
        Emails []string
}

var groups = map[string]Group{