Bug#916292: pyfai FTBFS on i386: test failures

[Adrian Bunk]

Source: pyfai
Version: 0.16.0+dfsg1-2
Severity: serious
Tags: ftbfs

https://buildd.debian.org/status/fetch.php?pkg=pyfai&arch=i386&ver=0.16.0%2Bdfsg1-2&stamp=1540775253&raw=0

...
======================================================================
FAIL: test_dot16 (pyFAI.test.test_openCL.TestKahan)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/<<BUILDDIR>>/pyfai-0.16.0+dfsg1/.pybuild/cpython2_2.7_pyfai/build/pyFAI/test/test_openCL.py", line 456, in test_dot16
    self.assertEqual(ref64, res)
AssertionError: 1431655765.0 != 1431655808.0

Stderr:
WARNING:silx.opencl.common:Last chance to get an OpenCL device ... probably not the one requested

======================================================================
FAIL: test_kahan (pyFAI.test.test_openCL.TestKahan)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/<<BUILDDIR>>/pyfai-0.16.0+dfsg1/.pybuild/cpython2_2.7_pyfai/build/pyFAI/test/test_openCL.py", line 375, in test_kahan
    self.assertEqual(ref64, res)
AssertionError: 67108863.0 != 67108864.0

Stderr:
WARNING:silx.opencl.common:Last chance to get an OpenCL device ... probably not the one requested

======================================================================
...
Ran 255 tests in 112.925s

FAILED (failures=2, skipped=70)
E: pybuild pybuild:338: test: plugin custom failed with: exit code=1: PYTHONPATH=/<<BUILDDIR>>/pyfai-0.16.0+dfsg1/.pybuild/cpython2_2.7_pyfai/build http_proxy='127.0.0.1:9' PYFAI_TESTIMAGES=testimages PYFAI_DATA=/<<BUILDDIR>>/pyfai-0.16.0+dfsg1 xvfb-run -a --server-args="-screen 0 1024x768x24" python2.7 ./run_tests.py --low-mem --installed
dh_auto_test: pybuild --test -i python{version} -p 2.7 returned exit code 13
make[1]: *** [debian/rules:28: override_dh_auto_test] Error 25