conn, err := d.dialer.DialContext(ctx, network, address)
	if err != nil {
		return nil, err
	}

	counted := new(countedConn)
	counted.Conn = conn

	d.mu.Lock()
	defer d.mu.Unlock()
	d.total++
	d.live++

	runtime.SetFinalizer(counted, d.decrement)
	return counted, nil
}

func (d *countingDialer) decrement(*countedConn) {
	d.mu.Lock()
	defer d.mu.Unlock()
	d.live--

// one of these wrappers, the rewritten receiver is almost certainly a different type
// than the original receiver. This is not a problem on the stack, where we use the
// program counter to determine the type information and understand that
// during (*Outer).M the receiver is an *Outer while during (*Inner).M the receiver in the same
// memory word is now an *Inner. But in the statically typed argument frame created