Version 0.14.1-3 of skimage is marked for autoremoval from testing on Thu 14 Feb 2019. It depends (transitively) on scikit-learn, affected by #907806. You should try to prevent the removal by fixing these RC bugs.
Last update: 2019-01-17
Depends on packages which need a new maintainer
The packages that skimage depends on which need a new maintainer are: