Nothing ever closes the channel, so your last "for" loop blocks reading from it.
A possible solution: https://play.golang.org/p/mKdzU1z6Tx -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.