[Bug 1798884] [NEW] Upgrade or install fails 1:7.2p2-4ubuntu2.5

[Ulf Zimmermann]

Public bug reported:

Today I've got an update to openssh-server version 1:7.2p2-4ubuntu2.5
but installation fails. Also when I purge the package and install it
again, I get the same error message:

openssh-server (1:7.2p2-4ubuntu2.5) wird eingerichtet ...
insserv: warning: script 'screen-cleanup' missing LSB tags and overrides
insserv: Default-Start undefined, assuming empty start runlevel(s) for script `screen-cleanup'
insserv: Default-Stop  undefined, assuming empty stop  runlevel(s) for script `screen-cleanup'
Job for ssh.service failed because the control process exited with error code. See "systemctl status ssh.service" and "journalctl -xe" for details.
invoke-rc.d: initscript ssh, action "start" failed.
● ssh.service - OpenBSD Secure Shell server
   Loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Fr 2018-10-19 20:53:49 CEST; 12ms ago
  Process: 29682 ExecStart=/usr/sbin/sshd -D $SSHD_OPTS (code=exited, status=255)
  Process: 29678 ExecStartPre=/usr/sbin/sshd -t (code=exited, status=0/SUCCESS)
 Main PID: 29682 (code=exited, status=255)

Okt 19 20:53:48 zulu1451.server4you.de systemd[1]: Starting OpenBSD Secure Shell server...
Okt 19 20:53:49 zulu1451.server4you.de systemd[1]: ssh.service: Main process exited, code=code=exited, status=255/n/a
Okt 19 20:53:49 zulu1451.server4you.de systemd[1]: Failed to start OpenBSD Secure Shell server.
Okt 19 20:53:49 zulu1451.server4you.de systemd[1]: ssh.service: Unit entered failed state.
Okt 19 20:53:49 zulu1451.server4you.de systemd[1]: ssh.service: Failed with result 'exit-code'.
Hint: Some lines were ellipsized, use -l to show in full.
dpkg: Fehler beim Bearbeiten des Paketes openssh-server (--configure):
 Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
dpkg: Abhängigkeitsprobleme verhindern Konfiguration von ssh:
 ssh hängt ab von openssh-server (>= 1:7.2p2-4ubuntu2.5); aber:
  Paket openssh-server ist noch nicht konfiguriert.

dpkg: Fehler beim Bearbeiten des Paketes ssh (--configure):
 Abhängigkeitsprobleme - verbleibt unkonfiguriert
Fehler traten auf beim Bearbeiten von:
 openssh-server
 ssh


The system is:
Description:    Ubuntu 16.04.5 LTS
Release:        16.04

** Affects: openssh (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1798884

Title:
  Upgrade or install fails 1:7.2p2-4ubuntu2.5

Status in openssh package in Ubuntu:
  New

Bug description:
  Today I've got an update to openssh-server version 1:7.2p2-4ubuntu2.5
  but installation fails. Also when I purge the package and install it
  again, I get the same error message:

  openssh-server (1:7.2p2-4ubuntu2.5) wird eingerichtet ...
  insserv: warning: script 'screen-cleanup' missing LSB tags and overrides
  insserv: Default-Start undefined, assuming empty start runlevel(s) for script `screen-cleanup'
  insserv: Default-Stop  undefined, assuming empty stop  runlevel(s) for script `screen-cleanup'
  Job for ssh.service failed because the control process exited with error code. See "systemctl status ssh.service" and "journalctl -xe" for details.
  invoke-rc.d: initscript ssh, action "start" failed.
  ● ssh.service - OpenBSD Secure Shell server
     Loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Fr 2018-10-19 20:53:49 CEST; 12ms ago
    Process: 29682 ExecStart=/usr/sbin/sshd -D $SSHD_OPTS (code=exited, status=255)
    Process: 29678 ExecStartPre=/usr/sbin/sshd -t (code=exited, status=0/SUCCESS)
   Main PID: 29682 (code=exited, status=255)

  Okt 19 20:53:48 zulu1451.server4you.de systemd[1]: Starting OpenBSD Secure Shell server...
  Okt 19 20:53:49 zulu1451.server4you.de systemd[1]: ssh.service: Main process exited, code=code=exited, status=255/n/a
  Okt 19 20:53:49 zulu1451.server4you.de systemd[1]: Failed to start OpenBSD Secure Shell server.
  Okt 19 20:53:49 zulu1451.server4you.de systemd[1]: ssh.service: Unit entered failed state.
  Okt 19 20:53:49 zulu1451.server4you.de systemd[1]: ssh.service: Failed with result 'exit-code'.
  Hint: Some lines were ellipsized, use -l to show in full.
  dpkg: Fehler beim Bearbeiten des Paketes openssh-server (--configure):
   Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
  dpkg: Abhängigkeitsprobleme verhindern Konfiguration von ssh:
   ssh hängt ab von openssh-server (>= 1:7.2p2-4ubuntu2.5); aber:
    Paket openssh-server ist noch nicht konfiguriert.

  dpkg: Fehler beim Bearbeiten des Paketes ssh (--configure):
   Abhängigkeitsprobleme - verbleibt unkonfiguriert
  Fehler traten auf beim Bearbeiten von:
   openssh-server
   ssh

  
  The system is:
  Description:    Ubuntu 16.04.5 LTS
  Release:        16.04

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