cycle for int: int (provideFunc) -> int generate failed

[wensenz]

You can use go bug to have a cool, automatically filled out bug template, or
fill out the template below.

Describe the bug

my test1.go

package main

type Test1 interface {
Func(x int) int
}

type myTest string

func (m *myTest) Func(x int) int {
return x
}

func provideMyTest() *myTest {
m := new(myTest)
*m = "hello wire!"
return m
}

func provideFunc(t Test1, x int) int {
val := t.Func(x)
return val
//return fmt.Sprintf("hello, %v", val)
}

my inject_test1.go

//+build wireinject

package main

import "github.com/google/wire"

var Set1 = wire.NewSet(provideMyTest,
wire.Bind(new(Test1), new(*myTest)),
provideFunc)

func InitFunc(x int) int {
wire.Build(Set1)
return 0
//return "22"
}

error:

wire
wire: inject_test1.go:7:12: cycle for int:
int (demo/test.provideFunc) ->
int
wire: demo/test: generate failed
wire: at least one generate failure

why?