emacs: magick/cache.c:306: AddOpenCLEvent: Assertion `cache_info->opencl != (OpenCLCacheInfo *) NULL' failed. Fatal error 6: Aborted

When I try to run this program from foo.org it causes a core dump. Otherwise ob-python seems to be working ok.
```
#+begin_src ipython :session :exports both :results raw drawer
%matplotlib inline
import matplotlib.pyplot as plt
import numpy as np

plt.hist(np.random.random(20000), bins=200)
#+end_src
```