package systemd 229-2ubuntu1 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 2

[Flávio Pimenta]

I'm testing Ubuntu 16.04 upgraded from Ubuntu 15.10 instalation.
I received a kernel panic on boot using kernel 4.4.0.11-generic and 4.4.0.12-generic.
Now I using 4.2.0-30-generic as workaround.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: systemd 229-2ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-30.36-generic 4.2.8-ckt3
Uname: Linux 4.2.0-30-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
Date: Tue Mar 8 15:43:52 2016
DuplicateSignature:
 De-configuring udev (225-1ubuntu9) ...
 dpkg: error processing archive /var/cache/apt/archives/systemd_229-2ubuntu1_amd64.deb (--unpack):
  subprocess installed pre-removal script returned error exit status 2
ErrorMessage: subprocess installed pre-removal script returned error exit status 2
InstallationDate: Installed on 2016-02-12 (26 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: Dell Inc. Inspiron 5448
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-30-generic root=UUID=f7a65cdb-3d82-4056-ac2e-ed862cec2d7c ro quiet splash
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.6
SourcePackage: systemd
Title: package systemd 229-2ubuntu1 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 2
UpgradeStatus: Upgraded to xenial on 2016-03-08 (0 days ago)
dmi.bios.date: 10/12/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: 0YDTG3
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A06
dmi.modalias: dmi:bvnDellInc.:bvrA06:bd10/12/2015:svnDellInc.:pnInspiron5448:pvrA06:rvnDellInc.:rn0YDTG3:rvrA00:cvnDellInc.:ct8:cvrA06:
dmi.product.name: Inspiron 5448
dmi.product.version: A06
dmi.sys.vendor: Dell Inc.

[Martin Pitt (pitti)]

This was fixed in xenial, udev's prerm now understands the "deconfigure" action. Unfortunately we can't retroactively fix the broken one in wily.