Make `is_arrays_compatible` always called
Make `is_arrays_compatible` always called

chainer/chainer,niboshi/chainer,ktnyt/chainer,keisuke-umezawa/chainer,niboshi/chainer,tkerola/chainer,wkentaro/chainer,hvy/chainer,wkentaro/chainer,chainer/chainer,wkentaro/chainer,okuta/chainer,keisuke-umezawa/chainer,chainer/chainer,jnishi/chainer,pfnet/chainer,okuta/chainer,keisuke-umezawa/chainer,niboshi/chainer,wkentaro/chainer,hvy/chainer,hvy/chainer,jnishi/chainer,ktnyt/chainer,jnishi/chainer,jnishi/chainer,ktnyt/chainer,keisuke-umezawa/chainer,ktnyt/chainer,okuta/chainer,hvy/chainer,okuta/chainer,chainer/chainer,niboshi/chainer