this package seems to have new commits in its VCS but has
not yet updated debian/changelog. You should consider updating
the Debian changelog and uploading this new version into the archive.
Here are the relevant commit logs:
Author: Ximin Luo <firstname.lastname@example.org>
Date: Sun Dec 2 10:36:37 2018 -0800
debian-cargo-vendor: only store differences between vendor-patches and debcargo-conf