Anacrolix torrent panic with SOCKS 5 proxy

main.go

package main

import (
	"log"

	"github.com/anacrolix/torrent"
)

func main() {
	cfg := torrent.NewDefaultClientConfig()
	cfg.Debug = true

	// Bump these two values to be some high value
	cfg.EstablishedConnsPerTorrent = 500
	cfg.HalfOpenConnsPerTorrent = 500

	// Set your proxy URL
	cfg.ProxyURL = "socks5://localhost:1080"

	c, err := torrent.NewClient(cfg)
	defer c.Close()
	if err != nil {
		log.Fatalf("error creating torrent client: %s", err)
	}

	// Add Big Buck Bunny magnet link
	t, _ := c.AddMagnet("magnet:?xt=urn:btih:dd8255ecdc7ca55fb0bbf81323d87062db1f6d1c&dn=Big+Buck+Bunny&tr=udp%3A%2F%2Fexplodie.org%3A6969&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969&tr=udp%3A%2F%2Ftracker.empire-js.us%3A1337&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337&tr=wss%3A%2F%2Ftracker.btorrent.xyz&tr=wss%3A%2F%2Ftracker.fastcast.nz&tr=wss%3A%2F%2Ftracker.openwebtorrent.com&ws=https%3A%2F%2Fwebtorrent.io%2Ftorrents%2F&xs=https%3A%2F%2Fwebtorrent.io%2Ftorrents%2Fbig-buck-bunny.torrent")
	log.Printf("fetching torrent info %s\n", t.InfoHash().String())
	<-t.GotInfo()
	log.Printf("fetched torrent info hash: %s length: %d num pieces: %d piece length: %d", t.InfoHash().String(), t.Info().TotalLength(), t.Info().NumPieces(), t.Info().PieceLength)

	t.DownloadAll()
	c.WaitAll()
	log.Printf("torrent download complete")
}