package systemd 225-1ubuntu9 [modified: usr/share/dbus-1/system-services/org.freedesktop.systemd1.service] failed to install/upgrade: subprocess installed pre-removal script returned error exit status 1

[Sudharshan]

This has occured after I upgraded from 15.04 to 15.10

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: systemd 225-1ubuntu9
ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3
Uname: Linux 4.2.0-18-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
Date: Sat Nov 28 23:47:45 2015
DuplicateSignature: package:systemd:225-1ubuntu9 [modified: usr/share/dbus-1/system-services/org.freedesktop.systemd1.service]:subprocess installed pre-removal script returned error exit status 1
ErrorMessage: subprocess installed pre-removal script returned error exit status 1
InstallationDate: Installed on 2015-07-07 (144 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: Dell Inc. Latitude E7440
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-18-generic root=UUID=147e2333-5609-4028-bce7-92b21552518f ro quiet splash acpi_osi=Linux acpi_backlight=vendor
RelatedPackageVersions:
 dpkg 1.18.2ubuntu5.1
 apt 1.0.10.2ubuntu1
SourcePackage: systemd
SystemdDelta:
 Error: command ['systemd-delta'] failed with exit code 1: Failed to open /usr/lib/systemd/system: Not a directory
 [EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf
 [EXTENDED] /etc/systemd/system/display-manager.service → /lib/systemd/system/display-manager.service.d/xdiagnose.conf
 [EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
Title: package systemd 225-1ubuntu9 [modified: usr/share/dbus-1/system-services/org.freedesktop.systemd1.service] failed to install/upgrade: subprocess installed pre-removal script returned error exit status 1
UpgradeStatus: Upgraded to wily on 2015-11-27 (2 days ago)
dmi.bios.date: 02/02/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A14
dmi.board.name: 0RYCC9
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA14:bd02/02/2015:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn0RYCC9:rvrA01:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E7440
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.

[Launchpad Janitor (janitor)]

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

[Martin Pitt (pitti)]

Removing systemd (225-1ubuntu9) ...
systemd is the active init system, please switch to another before removing systemd.
dpkg: error processing package systemd (--purge):
 subprocess installed pre-removal script returned error exit status 1

Err, yes, don't do that :-)

[Nicolas_Raoul (nicolas-raoul)]

I got this error when running `sudo do-release-upgrade` from 2015.10 to 2016.04:

package systemd 225-1ubuntu9.1 [modified: usr/share/dbus-1/system-services/org.freedesktop.systemd1.service] failed to install/upgrade: subprocess installed pre-removal script returned error exit status 2

@pitti: Would you mind detailing what makes you think this bug report is invalid? Thanks!