cd main

setenv GOPROXY off

# needed in order to have a go.sum
go mod init example.com
fail go mod tidy
contains stderr "cannot find module"

fail godebugtester run main.go
contains error "could not import"
#contains stdout "println(true)"
#contains stdout "=> len([97 98 99])"

-- main/main.go --
package main
import "golang.org/x/tools/godoc/util"
//godebug:annotatepackage:golang.org/x/tools/godoc/util
func main() {
	v:=util.IsText([]byte("abc"))
	println(v)
}
