package dnscrypt-proxy 1.6.0-2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Brinstar]

Tried to install over the version installed by dnscrypt-autoinstall and it crashed

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: dnscrypt-proxy 1.6.0-2
ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3
Uname: Linux 4.2.0-18-generic x86_64
NonfreeKernelModules: nvidia wl
ApportVersion: 2.19.1-0ubuntu4
AptOrdering:
 dnscrypt-proxy: Install
 dnscrypt-proxy: Configure
 NULL: ConfigurePending
Architecture: amd64
Date: Sun Nov 15 18:22:14 2015
DuplicateSignature: package:dnscrypt-proxy:1.6.0-2:subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2015-08-30 (77 days ago)
InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150825)
RelatedPackageVersions:
 dpkg 1.18.2ubuntu5
 apt 1.0.10.2ubuntu1
SourcePackage: dnscrypt-proxy
Title: package dnscrypt-proxy 1.6.0-2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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