Bug#901377: skimage: FTBFS and Debci failure with NumPy 1.14

[Graham Inggs]

Source: skimage
Version: 0.13.1-3
Severity: serious
Tags: ftbfs
User: debian-ci at lists.debian.org
Usertags: needs-update

Hi Maintainer

Since the recent upload of python-numpy on 2018-05-05, skimage has been 
failing its autopkgtests [1] and has now also started to FTBFS in 
unstable [2] with several errors similar to the following:

======================================================================
ERROR: skimage.io.tests.test_mpl_imshow.test_uint8
----------------------------------------------------------------------
Traceback (most recent call last):
   File "/usr/lib/python2.7/dist-packages/nose/case.py", line 197, in 
runTest
     self.test(*self.arg)
   File 
"/build/1st/skimage-0.13.1/debian/tmp/usr/lib/python2.7/dist-packages/skimage/io/tests/test_mpl_imshow.py", 
line 48, in test_uint8
     ax_im = io.imshow(im8)
   File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
     self.gen.next()
   File 
"/build/1st/skimage-0.13.1/debian/tmp/usr/lib/python2.7/dist-packages/skimage/_shared/_warnings.py", 
line 121, in expected_warnings
     raise ValueError('Unexpected warning: %s' % str(warn.message))
ValueError: Unexpected warning: Conversion of the second argument of 
issubdtype from `float` to `np.floating` is deprecated. In future, it 
will be treated as `np.float64 == np.dtype(float).type`.
-------------------- >> begin captured logging << --------------------
matplotlib.font_manager: DEBUG: findfont: Matching 
:family=sans-serif:style=normal:variant=normal:weight=normal:stretch=normal:size=10.0 
to DejaVu Sans 
(u'/usr/share/matplotlib/mpl-data/fonts/ttf/DejaVuSans.ttf') with score 
of 0.050000
--------------------- >> end captured logging << ---------------------

Regards
Graham


[1] https://ci.debian.net/packages/s/skimage/unstable/amd64/
[2] 
https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/skimage.html