cffi issue ? was RE:python3.7-dbg issue ?

[PICCA Frederic-Emmanuel <frederic-emmanuel.picca@synchrotron-soleil.fr>]

I think  that there is a problem with cffi

pyopencl was built with 

python3-cffi-backend i386 1.11.5-1 [80.2 kB]

but the backend used for the test is the current 1.11.5-3.

here the Debian changelog

python-cffi (1.11.5-3) unstable; urgency=medium

  [ Ondřej Nový ]
  * Use 'python3 -m sphinx' instead of sphinx-build for building docs

  [ Stefano Rivera ]
  * Patch skip-double-float-int: Skip big double->float inf tests on ppc64el,
    they are known to fail on gcc8, and the blame is being debated upstream.
  * Patch skip-init-locking-hurd: Skip a non-critical test that fails
    occasionally Hurd. (See: #893743)
  * Bump Standards-Version to 4.2.1, no changes needed.

 -- Stefano Rivera <stefanor@debian.org>  Wed, 12 Sep 2018 17:05:03 +0300

python-cffi (1.11.5-2) unstable; urgency=medium

  [ Ondřej Nový ]
  * d/tests: Use AUTOPKGTEST_TMP instead of ADTTMP
  * d/control: Remove ancient X-Python-Version field
  * d/control: Remove ancient X-Python3-Version field

  [ Stefano Rivera ]
  * Add python-cffi-doc package with Sphinx docs (Closes: #891865)
  * Patch: x32-pointers: handle pointers on ILP32 ABIs correctly.
    (Closes: #884705)
  * Bump Standards-Version to 4.2.0, no changes needed.