Try to clean up the ccache on travis again.
Try to clean up the ccache on travis again.

da-woods/cython,cython/cython,da-woods/cython,cython/cython,scoder/cython,da-woods/cython,da-woods/cython,scoder/cython,scoder/cython,cython/cython,scoder/cython,cython/cython