[Debian-astro-maintainers] Bug#1054646: gammapy: test_binary_dilate fails on i386, s390x

[Drew Parsons]

Source: gammapy
Version: 1.1-1
Severity: serious
Justification: debci

scipy 1.10.1-4 is triggering errors in test_ndmap.py
test_binary_dilate and test_binary_dilate_erode_3d
on both i386 and s390x.

The error looks a little like
https://github.com/gammapy/gammapy/issues/3662 which was solved by
adding error tolerance, https://github.com/gammapy/gammapy/pull/3907

Perhaps that tolerance needs to be increased a little. The failing
difference here is 23 not 20. 

test_binary_dilate_erode_3d isn't using a tolerance like that, should
it add it?

Not entirely clear why scipy 1.10.1-4 is giving failures now. The tests were
passing with scipy 1.10.1-2.  scipy 1.10.1-4 now builds with pythran
0.14, so perhaps some pythran 0.11 functions had gotten built into the
scipy 1.10.1-2 libraries that gammapy uses.