[Bug 1813468] Re: systemd-shim, Release upgrade failed (16.04 LTS -> 18.04 LTS)

[Roman Zabaluev]

Additional problems: 
1. There are some packages stuck in "The following packages have been kept back" state, can't soft-install them.
2. There's fail-safe SSH still running on 1022.

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https://bugs.launchpad.net/bugs/1813468

Title:
  systemd-shim, Release upgrade failed (16.04 LTS -> 18.04 LTS)

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  Got the following issue while upgrading from 16.04 LTS to 18.04 LTS.
  Apt logs from last run are attached. Let me know if you need any other logs.

  ==========

  Removing systemd-shim (9-1bzr4ubuntu1) ...
  Removing 'diversion of /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service to /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service.systemd by systemd-shim'
  dpkg-divert: error: rename involves overwriting '/usr/share/dbus-1/system-services/org.freedesktop.systemd1.service' with
    different file '/usr/share/dbus-1/system-services/org.freedesktop.systemd1.service.systemd', not allowed
  dpkg: error processing package systemd-shim (--remove):
   installed systemd-shim package post-removal script subprocess returned error exit status 2
  Errors were encountered while processing:
   systemd-shim
  Exception during pm.DoInstall():  E:Sub-process /usr/bin/dpkg returned an error code (1)

  Could not install the upgrades

  The upgrade has aborted. Your system could be in an unusable state. A 
  recovery will run now (dpkg --configure -a). 

  Please report this bug in a browser at 
  http://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+filebug 
  and attach the files in /var/log/dist-upgrade/ to the bug report. 
  E:Sub-process /usr/bin/dpkg returned an error code (1)

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