Version 1.12 of ros-metapackages is marked for autoremoval from testing on Mon 14 Jan 2019. It depends (transitively) on blender, affected by #915143. You should try to prevent the removal by fixing these RC bugs.
Last update: 2018-12-11
Standards version of the package is outdated.
The package should be updated to follow the last version of Debian Policy
(Standards-Version 4.2.1 instead of