package openssh-server 1:6.2p2-6ubuntu0.4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Dmitry Gutov]

The error popped up during the automatic update of installed packages.

ProblemType: Package
DistroRelease: Ubuntu 13.10
Package: openssh-server 1:6.2p2-6ubuntu0.4
ProcVersionSignature: Ubuntu 3.11.0-15.25-generic 3.11.10
Uname: Linux 3.11.0-15-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
Date: Thu May 8 14:35:59 2014
DuplicateSignature: package:openssh-server:1:6.2p2-6ubuntu0.4:subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2013-06-03 (339 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
SSHDConfig: Error: command ['/usr/sbin/sshd', '-T'] failed with exit code 255: Missing privilege separation directory: /var/run/sshd
SourcePackage: openssh
Title: package openssh-server 1:6.2p2-6ubuntu0.4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to saucy on 2013-11-02 (186 days ago)
modified.conffile..etc.init.ssh.conf: [deleted]