Bug#1003619: skimage: autopkgtest usually fails on armhf - out of memory

[Rebecca N. Palmer]

Package: python3-skimage
Version: 0.18.3-2
X-Debbugs-Cc: debian-release at lists.debian.org

The skimage autopkgtest usually, but not always, fails on armhf with 
several out-of-memory errors:
https://ci.debian.net/packages/s/skimage/testing/armhf/

It currently happens that the last migration-reference passed and the 
last few non-references failed, so this counts as an autopkgtest 
regression.  I consider it more likely that the server just happened to 
have more RAM free when it ran the reference, but I don't have proof of 
that.

The packages currently blocked only by this failure and age are pandas 
1.3.5+dfsg-1 (my upload) and glibc 2.33-2.  Release team: please unblock 
them.

Splitting up the skimage test suite like pandas does 
(https://salsa.debian.org/science-team/pandas/-/commit/13a3fba3c9c3835982a0ca75a96ce36f4149d55f) 
might be a way to actually fix this, but I haven't tried it.