package python3-crypto 2.6.1-5build1 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 1

[raymond strippy]

upgraded from 15.04 to 15.04...major issues/conflicts. upgrade aborted and now system kernel panics on boot to new kernel.

only able to login via kernel downgrade to 3.19.xx

Description: Ubuntu 15.10
Release: 15.10

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: python3-crypto 2.6.1-5build1
ProcVersionSignature: Ubuntu 3.19.0-31.36-generic 3.19.8-ckt7
Uname: Linux 3.19.0-31-generic x86_64
ApportVersion: 2.19.1-0ubuntu3
Architecture: amd64
Date: Thu Oct 22 21:07:12 2015
DuplicateSignature: package:python3-crypto:2.6.1-5build1:subprocess installed pre-removal script returned error exit status 1
ErrorMessage: subprocess installed pre-removal script returned error exit status 1
InstallationDate: Installed on 2014-01-30 (630 days ago)
InstallationMedia: Ubuntu-Server 13.10 "Saucy Salamander" - Release amd64 (20131016)
RelatedPackageVersions:
 dpkg 1.18.2ubuntu5
 apt 1.0.10.2ubuntu1
SourcePackage: python-crypto
Title: package python3-crypto 2.6.1-5build1 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 1
UpgradeStatus: Upgraded to wily on 2015-10-23 (0 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.