adduser in Ubuntu 26.10 is failing autopkgtests with the following

111s err: The group `s3afixedg01' already exists, but has a different GID.
Exiting.
111s
111s #   Failed test 'command success: /usr/sbin/addgroup
--stdoutmsglevel=error --stderrmsglevel=error --system --gid 980
s3afixedg01'
111s #   at debian/tests/lib/AdduserTestsCommon.pm line 243.
111s #          got: '13'
111s #     expected: '0'
111s
111s #   Failed test 'group exists: s3afixedg01'
111s #   at debian/tests/lib/AdduserTestsCommon.pm line 405.
111s #          got: undef
111s #     expected: anything else
111s
111s #   Failed test 'group has gid: group s3afixedg01 does not exist'
111s #   at debian/tests/lib/AdduserTestsCommon.pm line 675.
126s # Looks like you failed 3 tests of 950.

https://autopkgtest.ubuntu.com/results/autopkgtest-stonking/stonking/amd64/a/adduser/20260823_164607_a1a91@/log.gz

systemd-sysused auto allocates starting at 999 and going down. In a
Forky/testing container, it enumerates down to 987

polkitd:987
render:988
kvm:989
clock:990
sgx:991
input:992
_ssh:993
tss:994
systemd-resolve:995
messagebus:996
systemd-network:997
systemd-journal:998
lpadmin:999

the tests in debian/tests/f/firstlastuidgid.t : test group S3A: uid range
requested by config, no command line : hardcodes values

$prefix='s3a';
$firstuid1=260;
$firstgid1=270;
$fuid = 970;
$fgid = 980;

in autopkgtest in Ubuntu, we apparently have users down to 980 causing
failures. This can be addressed in the test by checking for open ids

So I am moving to accomodate the package that tries to kill mine, in
which I have wast^winvested months of my life.

Try https://salsa.debian.org/debian/adduser/-/commits/zg/debian-bug-1146412

Hello,

Bug #1146412 in adduser 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/adduser/-/commit/f1ee4aba66878309b572769544d3cad272d451ef
------------------------------------------------------------------------
move autopkgtests out of uid range > 900

systemd_sysusers allocates system users counting down from 1000. This
causes a conflict with the autopkgtests that we chose to use uids
970-980.

Closes: #1146412
------------------------------------------------------------------------

(this message was generated automatically)
-- 
Greetings

https://bugs.debian.org/1146412