Off the top of my head, for Go, (1) the semantics around nil and closed channels resulting in deadlocks, and (2) failing to recover from an unexpected panic. I

Off the top of my head, for Go, (1) the semantics around nil and closed channels resulting in deadlocks, and (2) failing to recover from an unexpected panic. I think error handling and documentation of the errors returned by methods could be improved in Go. I dislike having to comb through the Go standard library source to see what types of errors a method returns. I can't speak for lisp because I don't have enough experience with it.