package runit 2.1.2-3ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Eric]

when installing docker

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: runit 2.1.2-3ubuntu1
ProcVersionSignature: Ubuntu 4.3.0-5.16-generic 4.3.3
Uname: Linux 4.3.0-5-generic x86_64
ApportVersion: 2.19.3-0ubuntu2
Architecture: amd64
Date: Tue Dec 22 07:08:31 2015
Dependencies:
 fgetty 0.6-5build1
 gcc-5-base 5.3.1-4ubuntu1
 libc6 2.21-0ubuntu5
 libgcc1 1:5.3.1-4ubuntu1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2015-11-27 (24 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151123)
RelatedPackageVersions:
 dpkg 1.18.3ubuntu1
 apt 1.1.5
SourcePackage: runit
Title: package runit 2.1.2-3ubuntu1 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.