Check errors properly
Check errors properly

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