package casper 1.465 failed to install/upgrade: trying to overwrite '/usr/share/initramfs-tools/scripts/casper-premount/20iso_scan', which is also in package lupin-casper 0.57build1

[Russ McGinn]

Preparing to unpack .../casper_1.470_amd64.deb ...
Unpacking casper (1.470) over (1.465) ...
dpkg: error processing archive /var/cache/apt/archives/casper_1.470_amd64.deb (--unpack):
 trying to overwrite '/usr/share/initramfs-tools/scripts/casper-premount/20iso_scan', which is also in package lupin-casper 0.57build1
update-initramfs: deferring update (trigger activated)
Errors were encountered while processing:
 /var/cache/apt/archives/casper_1.470_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

ProblemType: Package
DistroRelease: Ubuntu 22.04
Package: casper 1.465
ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
Uname: Linux 5.15.0-27-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82
AptOrdering:
 casper:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Mon May 9 12:33:39 2022
DpkgTerminalLog:
 Preparing to unpack .../casper_1.470_amd64.deb ...
 Unpacking casper (1.470) over (1.465) ...
 dpkg: error processing archive /var/cache/apt/archives/casper_1.470_amd64.deb (--unpack):
  trying to overwrite '/usr/share/initramfs-tools/scripts/casper-premount/20iso_scan', which is also in package lupin-casper 0.57build1
ErrorMessage: trying to overwrite '/usr/share/initramfs-tools/scripts/casper-premount/20iso_scan', which is also in package lupin-casper 0.57build1
Python3Details: /usr/bin/python3.10, Python 3.10.4, python3-minimal, 3.10.4-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.21.1ubuntu2
 apt 2.4.5
SourcePackage: casper
Title: package casper 1.465 failed to install/upgrade: trying to overwrite '/usr/share/initramfs-tools/scripts/casper-premount/20iso_scan', which is also in package lupin-casper 0.57build1
UpgradeStatus: Upgraded to jammy on 2022-05-01 (8 days ago)
modified.conffile..etc.casper.conf: [deleted]

[Launchpad Janitor (janitor)]

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