run forever

package main
import (
    "fmt"
    "log"
    "github.com/streadway/amqp"
)
func failOnError(err error, msg string) {
    if err != nil {
        log.Fatalf("%s: %s", msg, err)
        panic(fmt.Sprintf("%s: %s", msg, err))
    }
}
func main() {
    conn, err := amqp.Dial("amqp://guest:guest@192.168.99.100:5672/")
    failOnError(err, "Failed to connect to RabbitMQ")
    defer conn.Close()
    ch, err := conn.Channel()
    failOnError(err, "Failed to open a channel")
    defer ch.Close()
    q, err := ch.QueueDeclare(
        "hello", // name
        false,   // durable
        false,   // delete when usused
        false,   // exclusive
        false,   // no-wait
        nil,     // arguments
    )
    failOnError(err, "Failed to declare a queue")
    msgs, err := ch.Consume(
        q.Name, // queue
        "",     // consumer
        true,   // auto-ack
        false,  // exclusive
        false,  // no-local
        false,  // no-wait
        nil,    // args
    )
    failOnError(err, "Failed to register a consumer")
    forever := make(chan bool)
    go func() {
        for d := range msgs {
            log.Printf("Received a message: %s", d.Body)
        }
    }()
    log.Printf(" [*] Waiting for messages. To exit press CTRL+C")
    <-forever
}

请问《cloud.native.go》这段代码中goroutine为什么是run forever

https://github.com/cloudnativego/rabbit-hello/blob/master/receive.go