Bug#853862: bootstrap-vz: Fails removing volume partitions mapping

[Joonas Kylmälä]

On Wed, 01 Feb 2017 16:46:00 +0100 Olivier Berger
<olivier.ber...@telecom-sudparis.eu> wrote:
> CalledProcessError: Command 'kpartx -ds /dev/loop0' returned non-zero exit 
> status 1

Did you install kpartx?