Test None can't be serialized in h5py<2.7.0
Test None can't be serialized in h5py<2.7.0

chainer/chainer,wkentaro/chainer,jnishi/chainer,hvy/chainer,jnishi/chainer,ktnyt/chainer,keisuke-umezawa/chainer,chainer/chainer,niboshi/chainer,chainer/chainer,anaruse/chainer,ktnyt/chainer,wkentaro/chainer,wkentaro/chainer,jnishi/chainer,rezoo/chainer,kashif/chainer,ktnyt/chainer,niboshi/chainer,niboshi/chainer,okuta/chainer,keisuke-umezawa/chainer,hvy/chainer,ktnyt/chainer,delta2323/chainer,okuta/chainer,okuta/chainer,wkentaro/chainer,hvy/chainer,ysekky/chainer,chainer/chainer,pfnet/chainer,tkerola/chainer,kiyukuta/chainer,okuta/chainer,hvy/chainer,keisuke-umezawa/chainer,aonotas/chainer,ronekko/chainer,niboshi/chainer,keisuke-umezawa/chainer,jnishi/chainer