[Scikit-learn-general] DPGMM/VBGMM problem in my clustering

Hi guys, I want to use dpgmm model for clustering topics. Each row is a document in my test.dat file. I have attached the gmm_cluster.py python code, using './gmm_cluster.py 50' (50 means reduction dimension) to run, the code read docs from test.dat. I found the predicted result of the train set

[Scikit-learn-general] test failed after installaing scikit

all, IN my ubuntu(uname -a): Linux ubuntu 3.2.0-29-generic-pae #46-Ubuntu SMP Fri Jul 27 17:25:43 UTC 2012 i686 i686 i386 GNU/Linux, after installing the scikit-learn from source package followd by https://pypi.python.org/pypi/scikit-learn/ , run 'nosetests --exe sklearn' ,following error happen