Hello!
During the static analysis was found possible mistake:

1. Variable int64(len(h.handlers)), whose possible value set allows a zero value at pool.go:45, is used as a denominator at pool.go:45.

func (h *PoolHandler) Handle(ctx context.Context, r slog.Record) error {
	// round robin
	rand := h.randSource.Int63() % int64(len(h.handlers))
	handlers := append(h.handlers[rand:], h.handlers[:rand]...)

Please clarify whether this requires correction?