After upgrading schroot the the schroot.service file fails to start:

$ sudo journalctl --no-pager --boot=0 --unit=schroot
Jun 11 11:34:24 debian systemd[1]: Starting Recover schroot sessions...
Jun 11 11:34:24 debian systemd[961]: schroot.service: Failed to locate
executable /usr/share/schroot/bin/schroot-init: Is a directory
Jun 11 11:34:24 debian systemd[961]: schroot.service: Failed at step EXEC
spawning /usr/share/schroot/bin/schroot-init: Is a directory
Jun 11 11:34:24 debian systemd[1]: schroot.service: Main process exited,
code=exited, status=203/EXEC
Jun 11 11:34:24 debian systemd[1]: schroot.service: Failed with result 'exit-
code'.
Jun 11 11:34:24 debian systemd[1]: Failed to start Recover schroot sessions.

Here's the aptitude log for upgrades:

Aptitude 0.8.13: log report
Sat, Jun 11 2022 11:26:46 +1000

  IMPORTANT: this log only lists intended actions; actions which fail
  due to dpkg problems may not be completed.

Will install 18 packages, and remove 0 packages.
96.3 kB of disk space will be freed
========================================
[INSTALL, DEPENDENCIES] libsystemd-shared:amd64 251.2-4
[UPGRADE] grub-common:amd64 2.06-2 -> 2.06-3
[UPGRADE] grub-pc:amd64 2.06-2 -> 2.06-3
[UPGRADE] grub-pc-bin:amd64 2.06-2 -> 2.06-3
[UPGRADE] grub2-common:amd64 2.06-2 -> 2.06-3
[UPGRADE] libnss-systemd:amd64 251.2-2 -> 251.2-4
[UPGRADE] libpam-systemd:amd64 251.2-2 -> 251.2-4
[UPGRADE] libsystemd0:amd64 251.2-2 -> 251.2-4
[UPGRADE] libsystemd0:i386 251.2-2 -> 251.2-4
[UPGRADE] libudev1:amd64 251.2-2 -> 251.2-4
[UPGRADE] libudev1:i386 251.2-2 -> 251.2-4
[UPGRADE] schroot:amd64 1.6.10-13 -> 1.6.10-15
[UPGRADE] schroot-common:amd64 1.6.10-13 -> 1.6.10-15
[UPGRADE] systemd:amd64 251.2-2 -> 251.2-4
[UPGRADE] systemd-journal-remote:amd64 251.2-2 -> 251.2-4
[UPGRADE] systemd-sysv:amd64 251.2-2 -> 251.2-4
[UPGRADE] systemd-timesyncd:amd64 251.2-2 -> 251.2-4
[UPGRADE] udev:amd64 251.2-2 -> 251.2-4
========================================

Log complete.

Konomi Kitten wrote...

Ouch. How did *that* slip through my testing procedure?

Thanks for reporting, will upload a fixed version ASAP.

    Christoph

Control: tags 1012641 confirmed pending

Konomi Kitten wrote...

Ouch. How did *that* slip through my testing procedure?

Thanks for reporting, will upload a fixed version ASAP.

    Christoph

We believe that the bug you reported is fixed in the latest version of
schroot, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1012641@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Christoph Biedl <debian.axhn@manchmal.in-ulm.de> (supplier of updated schroot package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sat, 11 Jun 2022 08:33:27 +0200
Source: schroot
Architecture: source
Version: 1.6.10-16
Distribution: unstable
Urgency: medium
Maintainer: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>
Changed-By: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>
Closes: 1012641
Changes:
 schroot (1.6.10-16) unstable; urgency=medium
 .
   * Fix installation path of the service file/init script helper.
     Closes: #1012641
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Hello,

Bug #1012641 in schroot reported by you has been fixed in the
Git repository and is awaiting an upload. You can see the commit
message below and you can check the diff of the fix at:

https://salsa.debian.org/debian/schroot/-/commit/a605ca5a91bee8aa40700de934e19e7680eff844

(this message was generated automatically)
-- 
Greetings

https://bugs.debian.org/1012641