Get:1 http://security.debian.org/debian-security buster/updates InRelease [34.8 kB]
Ign:2 http://deb.debian.org/debian buster-backports InRelease                  
Hit:3 http://deb.debian.org/debian buster InReleasetor.wikimedia.org/T390275
Err:4 http://deb.debian.org/debian buster-backports Release                    
  404  Not Found [IP: 151.101.194.132 80]
Get:5 http://security.debian.org/debian-security buster/updates/main amd64 Packages [610 kB]
Get:6 http://security.debian.org/debian-security buster/updates/main Translation-en [330 kB]
Get:7 http://security.debian.org/debian-security buster/updates/contrib amd64 Packages [3460 B]
Get:8 http://security.debian.org/debian-security buster/updates/contrib Translation-en [1488 B]
Reading package lists... Done                                    
E: The repository 'http://deb.debian.org/debian buster-backports Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

-deb http://deb.debian.org/debian/ buster-backports main
+deb http://archive.debian.org/debian buster-backports main

systemctl stop apache2.service parsoid.service wmch-wiki-minipedia.service memcached.service

SHOW FULL PROCESSLIST;
+-----+-------------+-----------+------+---------+------+--------------------------+-----------------------+----------+
| Id  | User        | Host      | db   | Command | Time | State                    | Info                  | Progress |
+-----+-------------+-----------+------+---------+------+--------------------------+-----------------------+----------+
|   1 | system user |           | NULL | Daemon  | NULL | InnoDB purge worker      | NULL                  |    0.000 |
|   3 | system user |           | NULL | Daemon  | NULL | InnoDB purge worker      | NULL                  |    0.000 |
|   4 | system user |           | NULL | Daemon  | NULL | InnoDB purge coordinator | NULL                  |    0.000 |
|   2 | system user |           | NULL | Daemon  | NULL | InnoDB purge worker      | NULL                  |    0.000 |
|   5 | system user |           | NULL | Daemon  | NULL | InnoDB shutdown handler  | NULL                  |    0.000 |
| 953 | root        | localhost | NULL | Query   |    0 | Init                     | SHOW FULL PROCESSLIST |    0.000 |
+-----+-------------+-----------+------+---------+------+--------------------------+-----------------------+----------+
6 rows in set (0.015 sec)

systemctl stop mariadb

$ dpkg -l | grep -E '^ii' | wc -l
638

$ apt-mark showhold
<silence>

deb https://deb.debian.org/debian bookworm main
deb-src https://deb.debian.org/debian bookworm main

deb https://security.debian.org/debian-security bookworm-security main
deb-src https://security.debian.org/debian-security bookworm-security main

deb https://deb.debian.org/debian bookworm-updates main
deb-src https://deb.debian.org/debian bookworm-updates main

apt update

$ apt -o APT::Get::Trivial-Only=true full-upgrade
...
Need to get 381 MB of archives.
After this operation, 860 MB of additional disk space will be used.

apt upgrade --without-new-pkgs

$ echo $?
0

apt full-upgrade

mediawiki (1:1.39.0-1) unstable; urgency=medium

    MediaWiki has been updated to the 1.39 upstream release branch, which
    brings in two years of upstream changes since 1.39. Release notes
    may be found in /usr/share/doc/mediawiki/RELEASE-NOTES-1.39` and
    /usr/share/doc/mediawiki/changelog. Please see the "Upgrading" section
    of README.debian and /usr/share/doc/mediawiki/UPGRADE for details on
    what manual steps need to be taken to upgrade.

    Some highlights of new features:
    * New bundled extensions:
      * AbuseFilters allows administrators set specific actions to be taken
        when actions by users, such as edits or file uploads, match certain
        criteria.
      * Math lets users create mathematical formulae written in a sub-set of
        LaTeX and rendered in MathML with a fallback SVG image.
    * There is a new bundled skin, Minerva, which provides a much simpler user
      interface and is much more aggressive about optimizing for performance so
      that it can cater for mobile users.
    * The logo of MediaWiki has changed. This means that the "Powered by
      MediaWiki" button shown in the skin footer will be different.
    * Administrators now have the option to delete/undelete the associated
      "Talk" page when they are (un)deleting a given page.
    * Added support for 42 new languages.

Setting up libc6:amd64 (2.36-9+deb12u10) ...
/usr/bin/perl: error while loading shared libraries: libcrypt.so.1: cannot open shared object file: No such file or directory
dpkg: error processing package libc6:amd64 (--configure):
 installed libc6:amd64 package post-installation script subprocess returned error exit status 127
Errors were encountered while processing:
 libc6:amd64
Error: Timeout was reached
E: Sub-process /usr/bin/dpkg returned an error code (1)