multiple-value jenkins.GetAllNodes() in single-value context

package main

import ( "fmt"

"github.com/bndr/gojenkins"

)

func main() { jenkins := gojenkins.CreateJenkins(nil, "https://jenkins.dev.intranet", "foo", "bar")

_, err := jenkins.Init()
if err != nil {
	panic(err)
}
fmt.Println("Jenkins is Online")

nodes := jenkins.GetAllNodes()
for _, node := range nodes {

	// Fetch Node Data
	node.Poll()
	if node.IsOnline() {
		fmt.Println("Node is Online")
	}
}

} When I run: go build . ./main.go:18:30: multiple-value jenkins.GetAllNodes() in single-value context