package systemd 235-3ubuntu2 failed to install/upgrade: triggers looping, abandoned

[Ivan S Kirkpatrick]

tried to do a release upgrade.

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: systemd 235-3ubuntu2
ProcVersionSignature: Ubuntu 4.13.0-19.22-generic 4.13.13
Uname: Linux 4.13.0-19-generic x86_64
NonfreeKernelModules: zfs zunicode zavl zcommon znvpair
ApportVersion: 2.20.8-0ubuntu5
Architecture: amd64
Date: Sun Dec 17 16:46:21 2017
ErrorMessage: triggers looping, abandoned
InstallationDate: Installed on 2016-04-23 (603 days ago)
InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
MachineType: To be filled by O.E.M. To be filled by O.E.M.
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-19-generic root=UUID=8ccfe2c6-3d43-4efd-afec-10f81a10901d ro quiet splash vt.handoff=7
Python3Details: /usr/bin/python3.6, Python 3.6.4rc1, python3-minimal, 3.6.3-0ubuntu2
PythonDetails: /usr/bin/python2.7, Python 2.7.14+, python-minimal, 2.7.14-2ubuntu1
RelatedPackageVersions:
 dpkg 1.19.0.4ubuntu1
 apt 1.6~alpha5
SourcePackage: systemd
SystemdDelta:
 [EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf
 [EXTENDED] /lib/systemd/system/user@.service → /lib/systemd/system/user@.service.d/timeout.conf

 2 overridden configuration files found.
Title: package systemd 235-3ubuntu2 failed to install/upgrade: triggers looping, abandoned
UpgradeStatus: Upgraded to bionic on 2017-12-17 (0 days ago)
dmi.bios.date: 10/16/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1604
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: SABERTOOTH 990FX
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1604:bd10/16/2012:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnASUSTeKCOMPUTERINC.:rnSABERTOOTH990FX:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: To be filled by O.E.M.