package memtest86+ 5.01-3ubuntu2 failed to install/upgrade: unable to make backup link of './boot/memtest86+.bin' before installing new version: Operation not permitted

[schaf]

memtest86+ aborts with errors during installation.

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: memtest86+ 5.01-3ubuntu2
ProcVersionSignature: Ubuntu 5.4.0-91.102-generic 5.4.151
Uname: Linux 5.4.0-91-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
CasperMD5CheckResult: skip
Date: Fri Dec 10 12:43:52 2021
DuplicateSignature:
 package:memtest86+:5.01-3ubuntu2
 Unpacking memtest86+ (5.01-3.1ubuntu2.1) over (5.01-3ubuntu2) ...
 dpkg: error processing archive /tmp/apt-dpkg-install-nAa0Ws/32-memtest86+_5.01-3.1ubuntu2.1_amd64.deb (--unpack):
  unable to make backup link of './boot/memtest86+.bin' before installing new version: Operation not permitted
ErrorMessage: unable to make backup link of './boot/memtest86+.bin' before installing new version: Operation not permitted
InstallationDate: Installed on 2017-01-07 (1797 days ago)
InstallationMedia: Ubuntu-GNOME 14.04.5 LTS "Trusty Tahr" - Release amd64 (20160803)
Python3Details: /usr/bin/python3.8, Python 3.8.10, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: /usr/bin/python2.7, Python 2.7.18, python-is-python2, 2.7.17-4
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.6
SourcePackage: memtest86+
Title: package memtest86+ 5.01-3ubuntu2 failed to install/upgrade: unable to make backup link of './boot/memtest86+.bin' before installing new version: Operation not permitted
UpgradeStatus: Upgraded to focal on 2021-08-06 (125 days ago)