Problem sending string concatenated with variable about life HOT 5 CLOSED

package main

import (
	"errors"
	"github.com/perlin-network/life/exec"
	"io/ioutil"
	"fmt"
)

func check(err error) {
	if err != nil {
		panic(err)
	}
}

var _ exec.ImportResolver = (*resolver)(nil)

type resolver struct {}

func (resolver) ResolveFunc(module, field string) exec.FunctionImport {
	switch module {
	case "env":
		switch field {
		case "abort":
			return func(vm *exec.VirtualMachine) int64 {
				return 0
			}
		case "log":
			return func(vm *exec.VirtualMachine) int64 {
				frame := vm.GetCurrentFrame()

				msgPtr := int(uint32(frame.Locals[0]))
				msgLen := int(uint32(frame.Locals[1]))
				msg := string(vm.Memory[msgPtr : msgPtr+msgLen])

				fmt.Println(msg)

				return 0
			}
		default:
			panic(fmt.Errorf("unknown import resolved: %s", field))
		}
	}

	panic(fmt.Errorf("unknown module: %s", module))
}

func (resolver) ResolveGlobal(module, field string) int64 {
	panic("implement me")
}

func main() {
	code, err := ioutil.ReadFile("build/optimized.wasm")
	check(err)

	vm, err := exec.NewVirtualMachine(code, exec.VMConfig{}, new(resolver), nil)
	check(err)

	entrypoint, exists := vm.GetFunctionExport("main")
	if !exists {
		check(errors.New("failed to find entry point"))
	}

	_, err = vm.Run(entrypoint)
	check(err)
}