Diff of the two buildlogs:

--
--- b1/build.log	2025-02-05 21:44:11.071920570 +0000
+++ b2/build.log	2025-02-05 21:45:03.409549844 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Feb  5 09:41:01 -12 2025
-I: pbuilder-time-stamp: 1738791661
+I: Current time: Wed Mar 11 18:07:12 +14 2026
+I: pbuilder-time-stamp: 1773202032
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -24,52 +24,84 @@
 dpkg-source: info: applying incorrect-path-for-interpreter.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/4159716/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/1681989/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos5-amd64.
+I: Changing host+domainname to test build reproducibility
+I: Adding a custom variable just for the fun of it...
+I: Changing /bin/sh to bash
+'/bin/sh' -> '/bin/bash'
+lrwxrwxrwx 1 root root 9 Mar 11 04:07 /bin/sh -> /bin/bash
+I: Setting pbuilder2's login shell to /bin/bash
+I: Setting pbuilder2's GECOS to second user,second room,second work-phone,second home-phone,second other
+I: user script /srv/workspace/pbuilder/1681989/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/1681989/tmp/hooks/D02_print_environment starting
 I: set
-  BUILDDIR='/build/reproducible-path'
-  BUILDUSERGECOS='first user,first room,first work-phone,first home-phone,first other'
-  BUILDUSERNAME='pbuilder1'
-  BUILD_ARCH='amd64'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=20 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='amd64'
+  BASH=/bin/sh
+  BASHOPTS=checkwinsize:cmdhist:complete_fullquote:extquote:force_fignore:globasciiranges:globskipdots:hostcomplete:interactive_comments:patsub_replacement:progcomp:promptvars:sourcepath
+  BASH_ALIASES=()
+  BASH_ARGC=()
+  BASH_ARGV=()
+  BASH_CMDS=()
+  BASH_LINENO=([0]="12" [1]="0")
+  BASH_LOADABLES_PATH=/usr/local/lib/bash:/usr/lib/bash:/opt/local/lib/bash:/usr/pkg/lib/bash:/opt/pkg/lib/bash:.
+  BASH_SOURCE=([0]="/tmp/hooks/D02_print_environment" [1]="/tmp/hooks/D02_print_environment")
+  BASH_VERSINFO=([0]="5" [1]="2" [2]="37" [3]="1" [4]="release" [5]="x86_64-pc-linux-gnu")
+  BASH_VERSION='5.2.37(1)-release'
+  BUILDDIR=/build/reproducible-path
+  BUILDUSERGECOS='second user,second room,second work-phone,second home-phone,second other'
+  BUILDUSERNAME=pbuilder2
+  BUILD_ARCH=amd64
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=42 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='9ba5d093b71049cd83f3dcf4a0cc2613'
-  LANG='C'
-  LANGUAGE='en_US:en'
-  LC_ALL='C'
-  MAIL='/var/mail/root'
-  OPTIND='1'
-  PATH='/usr/sbin:/usr/bin:/sbin:/bin:/usr/games'
-  PBCURRENTCOMMANDLINEOPERATION='build'
-  PBUILDER_OPERATION='build'
-  PBUILDER_PKGDATADIR='/usr/share/pbuilder'
-  PBUILDER_PKGLIBDIR='/usr/lib/pbuilder'
-  PBUILDER_SYSCONFDIR='/etc'
-  PPID='4159716'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=eefd909e5f0e4a08ad4015089ae359ae
+  LANG=C
+  LANGUAGE=et_EE:et
+  LC_ALL=C
+  MACHTYPE=x86_64-pc-linux-gnu
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnu
+  PATH=/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path
+  PBCURRENTCOMMANDLINEOPERATION=build
+  PBUILDER_OPERATION=build
+  PBUILDER_PKGDATADIR=/usr/share/pbuilder
+  PBUILDER_PKGLIBDIR=/usr/lib/pbuilder
+  PBUILDER_SYSCONFDIR=/etc
+  PIPESTATUS=([0]="0")
+  POSIXLY_CORRECT=y
+  PPID=1681989
   PS4='+ '
-  PWD='/'
-  SHELL='/bin/bash'
-  SHLVL='2'
-  SUDO_COMMAND='/usr/bin/timeout -k 18.1h 18h /usr/bin/ionice -c 3 /usr/bin/nice /usr/sbin/pbuilder --build --configfile /srv/reproducible-results/rbuild-debian/r-b-build.pn88CL69/pbuilderrc_iWVr --distribution trixie --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/trixie-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.pn88CL69/b1 --logfile b1/build.log libmonitoring-livestatus-perl_0.84-2.dsc'
-  SUDO_GID='111'
-  SUDO_UID='106'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://46.16.76.132:3128'
+  PWD=/
+  SHELL=/bin/bash
+  SHELLOPTS=braceexpand:errexit:hashall:interactive-comments:posix
+  SHLVL=3
+  SUDO_COMMAND='/usr/bin/timeout -k 24.1h 24h /usr/bin/ionice -c 3 /usr/bin/nice -n 11 /usr/bin/unshare --uts -- /usr/sbin/pbuilder --build --configfile /srv/reproducible-results/rbuild-debian/r-b-build.pn88CL69/pbuilderrc_NMxy --distribution trixie --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/trixie-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.pn88CL69/b2 --logfile b2/build.log libmonitoring-livestatus-perl_0.84-2.dsc'
+  SUDO_GID=110
+  SUDO_UID=105
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://213.165.73.152:3128
 I: uname -a
-  Linux ionos11-amd64 6.1.0-30-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.124-1 (2025-01-12) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.12.9+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.9-1~bpo12+1 (2025-01-19) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/4159716/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/1681989/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -151,7 +183,7 @@
 Get: 36 http://deb.debian.org/debian trixie/main amd64 libyaml-tiny-perl all 1.76-1 [29.8 kB]
 Get: 37 http://deb.debian.org/debian trixie/main amd64 libmodule-install-perl all 1.21-2 [139 kB]
 Get: 38 http://deb.debian.org/debian trixie/main amd64 netcat-openbsd amd64 1.228-1 [42.4 kB]
-Fetched 21.9 MB in 2s (12.8 MB/s)
+Fetched 21.9 MB in 0s (117 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libproc2-0:amd64.
 (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19843 files and directories currently installed.)
@@ -319,7 +351,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/libmonitoring-livestatus-perl-0.84/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" HOME="/nonexistent/first-build" dpkg-buildpackage -us -uc -b && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" HOME="/nonexistent/first-build" dpkg-genchanges -S  > ../libmonitoring-livestatus-perl_0.84-2_source.changes
+I: user script /srv/workspace/pbuilder/1681989/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/1681989/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libmonitoring-livestatus-perl-0.84/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path" HOME="/nonexistent/second-build" dpkg-buildpackage -us -uc -b && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path" HOME="/nonexistent/second-build" dpkg-genchanges -S  > ../libmonitoring-livestatus-perl_0.84-2_source.changes
 dpkg-buildpackage: info: source package libmonitoring-livestatus-perl
 dpkg-buildpackage: info: source version 0.84-2
 dpkg-buildpackage: info: source distribution unstable
@@ -352,15 +388,15 @@
 Writing Makefile for Monitoring::Livestatus
 Writing MYMETA.yml and MYMETA.json
    dh_auto_build
-	make -j20
+	make -j42
 make[1]: Entering directory '/build/reproducible-path/libmonitoring-livestatus-perl-0.84'
-cp lib/Monitoring/Livestatus/INET.pm blib/lib/Monitoring/Livestatus/INET.pm
 cp lib/Monitoring/Livestatus/UNIX.pm blib/lib/Monitoring/Livestatus/UNIX.pm
 cp lib/Monitoring/Livestatus.pm blib/lib/Monitoring/Livestatus.pm
+cp lib/Monitoring/Livestatus/INET.pm blib/lib/Monitoring/Livestatus/INET.pm
 Manifying 3 pod documents
 make[1]: Leaving directory '/build/reproducible-path/libmonitoring-livestatus-perl-0.84'
    dh_auto_test
-	make -j20 test TEST_VERBOSE=1
+	make -j42 test TEST_VERBOSE=1
 make[1]: Entering directory '/build/reproducible-path/libmonitoring-livestatus-perl-0.84'
 PERL_DL_NONLAZY=1 "/usr/bin/perl" "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harness::Switches; test_harness(1, 'inc', 'blib/lib', 'blib/arch')" t/01-Monitoring-Livestatus-basic_tests.t t/02-Monitoring-Livestatus-internals.t t/085-json_xs.t t/20-Monitoring-Livestatus-test_socket.t t/21-Monitoring-Livestatus-INET.t t/22-Monitoring-Livestatus-UNIX.t t/23-Monitoring-Livestatus-BigData.t t/30-Monitoring-Livestatus-live-test.t t/32-Monitoring-Livestatus-backend-test.t t/33-Monitoring-Livestatus-test_socket_timeout.t t/34-Monitoring-Livestatus-utf8_support.t t/35-Monitoring-Livestatus-callbacks_support.t t/97-Pod.t t/98-Pod-Coverage.t t/99-Perl-Critic.t
 t/01-Monitoring-Livestatus-basic_tests.t .......... 
@@ -418,7 +454,7 @@
 ok 1 - use Monitoring::Livestatus;
 creating unix socket
 creating tcp socket
-ok 2 - An object of class 'Monitoring::Livestatus' isa 'Monitoring::Livestatus'
+ok 2 - An object of class 'Monitoring::Livestatus::UNIX' isa 'Monitoring::Livestatus'
 ok 3 - enable verbose
 ok 4 - disable verbose
 ok 5 - disable errors_are_fatal
@@ -445,7 +481,7 @@
 ok 26 - selectrow_arrayref($empty_statement)
 ok 27 - selectrow_hashref($empty_statement)
 ok 28 - selectall_arrayref($empty_hostgroups_stm)
-ok 29 - An object of class 'Monitoring::Livestatus' isa 'Monitoring::Livestatus'
+ok 29 - An object of class 'Monitoring::Livestatus::INET' isa 'Monitoring::Livestatus'
 ok 30 - enable verbose
 ok 31 - disable verbose
 ok 32 - disable errors_are_fatal
@@ -472,7 +508,7 @@
 ok 53 - selectrow_arrayref($empty_statement)
 ok 54 - selectrow_hashref($empty_statement)
 ok 55 - selectall_arrayref($empty_hostgroups_stm)
-ok 56 - An object of class 'Monitoring::Livestatus::INET' isa 'Monitoring::Livestatus'
+ok 56 - An object of class 'Monitoring::Livestatus' isa 'Monitoring::Livestatus'
 ok 57 - enable verbose
 ok 58 - disable verbose
 ok 59 - disable errors_are_fatal
@@ -499,7 +535,7 @@
 ok 80 - selectrow_arrayref($empty_statement)
 ok 81 - selectrow_hashref($empty_statement)
 ok 82 - selectall_arrayref($empty_hostgroups_stm)
-ok 83 - An object of class 'Monitoring::Livestatus::UNIX' isa 'Monitoring::Livestatus'
+ok 83 - An object of class 'Monitoring::Livestatus' isa 'Monitoring::Livestatus'
 ok 84 - enable verbose
 ok 85 - disable verbose
 ok 86 - disable errors_are_fatal
@@ -539,22 +575,30 @@
 ok 2 - 'Monitoring::Livestatus::UNIX->new()' isa 'Monitoring::Livestatus'
 ok 3 - 'Monitoring::Livestatus::UNIX->new(%args)' isa 'Monitoring::Livestatus'
 ok
+
+#   Failed test 'memory delta: 0.00 MB'
+#   at t/23-Monitoring-Livestatus-BigData.t line 84.
+
+#   Failed test 'memory usage per entry: 0 B'
+#   at t/23-Monitoring-Livestatus-BigData.t line 85.
+# Looks like you failed 2 tests of 13.
 t/23-Monitoring-Livestatus-BigData.t .............. 
 1..13
 ok 1 - use Monitoring::Livestatus;
 ok 2 - 'Monitoring::Livestatus->new()' isa 'Monitoring::Livestatus'
 ok 3 - testfile: /tmp/testresult.json.data written
 ok 4 - file has 443 bytes
-ok 5 - memory at start: 16.91 MB
+ok 5 - memory at start: 16.58 MB
 ok 6 - netcat started
 ok 7 - result is an array
 ok 8 - result has right number
 ok 9 - result contains hashes
 ok 10 - result contains all hosts
-ok 11 - memory at end: 16.94 MB
-ok 12 - memory delta: 0.03 MB
-ok 13 - memory usage per entry: 5734 B
-ok
+ok 11 - memory at end: 16.58 MB
+not ok 12 - memory delta: 0.00 MB
+not ok 13 - memory usage per entry: 0 B
+Dubious, test returned 2 (wstat 512, 0x200)
+Failed 2/13 subtests 
 t/30-Monitoring-Livestatus-live-test.t ............ skipped: Author test.  Set $ENV{TEST_SOCKET} and $ENV{TEST_SERVER} to run
 t/32-Monitoring-Livestatus-backend-test.t ......... skipped: Author test.  Set $ENV{TEST_SOCKET} and $ENV{TEST_SERVER} and $ENV{TEST_BACKEND} to run
 t/33-Monitoring-Livestatus-test_socket_timeout.t .. skipped: Author test.  Set $ENV{TEST_SOCKET} and $ENV{TEST_SERVER} to run
@@ -563,51 +607,32 @@
 t/97-Pod.t ........................................ skipped: Test::Pod 1.14 required
 t/98-Pod-Coverage.t ............................... skipped: Author test.  Set $ENV{TEST_AUTHOR} to a true value to run.
 t/99-Perl-Critic.t ................................ skipped: Author test.  Set $ENV{TEST_AUTHOR} to a true value to run.
-All tests successful.
-Files=15, Tests=171, 12 wallclock secs ( 0.15 usr  0.06 sys +  3.12 cusr  0.62 csys =  3.95 CPU)
-Result: PASS
-make[1]: Leaving directory '/build/reproducible-path/libmonitoring-livestatus-perl-0.84'
-   create-stamp debian/debhelper-build-stamp
-   dh_prep
-   dh_auto_install --destdir=debian/libmonitoring-livestatus-perl/
-	make -j20 install DESTDIR=/build/reproducible-path/libmonitoring-livestatus-perl-0.84/debian/libmonitoring-livestatus-perl AM_UPDATE_INFO_DIR=no PREFIX=/usr
-make[1]: Entering directory '/build/reproducible-path/libmonitoring-livestatus-perl-0.84'
-Manifying 3 pod documents
-Installing /build/reproducible-path/libmonitoring-livestatus-perl-0.84/debian/libmonitoring-livestatus-perl/usr/share/perl5/Monitoring/Livestatus.pm
-Installing /build/reproducible-path/libmonitoring-livestatus-perl-0.84/debian/libmonitoring-livestatus-perl/usr/share/perl5/Monitoring/Livestatus/UNIX.pm
-Installing /build/reproducible-path/libmonitoring-livestatus-perl-0.84/debian/libmonitoring-livestatus-perl/usr/share/perl5/Monitoring/Livestatus/INET.pm
-Installing /build/reproducible-path/libmonitoring-livestatus-perl-0.84/debian/libmonitoring-livestatus-perl/usr/share/man/man3/Monitoring::Livestatus.3pm
-Installing /build/reproducible-path/libmonitoring-livestatus-perl-0.84/debian/libmonitoring-livestatus-perl/usr/share/man/man3/Monitoring::Livestatus::UNIX.3pm
-Installing /build/reproducible-path/libmonitoring-livestatus-perl-0.84/debian/libmonitoring-livestatus-perl/usr/share/man/man3/Monitoring::Livestatus::INET.3pm
+
+Test Summary Report
+-------------------
+t/23-Monitoring-Livestatus-BigData.t            (Wstat: 512 (exited 2) Tests: 13 Failed: 2)
+  Failed tests:  12-13
+  Non-zero exit status: 2
+Files=15, Tests=171,  3 wallclock secs ( 0.06 usr  0.03 sys +  1.12 cusr  0.27 csys =  1.48 CPU)
+Result: FAIL
+Failed 1/15 test programs. 2/171 subtests failed.
+make[1]: *** [Makefile:770: test_dynamic] Error 255
 make[1]: Leaving directory '/build/reproducible-path/libmonitoring-livestatus-perl-0.84'
-   dh_installdocs
-   dh_installchangelogs
-   dh_installexamples
-   dh_installman
-   dh_perl
-   dh_link
-   dh_strip_nondeterminism
-   dh_compress
-   dh_fixperms
-   dh_missing
-   dh_installdeb
-   dh_gencontrol
-   dh_md5sums
-   dh_builddeb
-dpkg-deb: building package 'libmonitoring-livestatus-perl' in '../libmonitoring-livestatus-perl_0.84-2_all.deb'.
- dpkg-genbuildinfo --build=binary -O../libmonitoring-livestatus-perl_0.84-2_amd64.buildinfo
- dpkg-genchanges --build=binary -O../libmonitoring-livestatus-perl_0.84-2_amd64.changes
-dpkg-genchanges: info: binary-only upload (no source code included)
- dpkg-source --after-build .
-dpkg-buildpackage: info: binary-only upload (no source included)
-dpkg-genchanges: info: not including original source code in upload
+dh_auto_test: error: make -j42 test TEST_VERBOSE=1 returned exit code 2
+make: *** [debian/rules:4: binary] Error 25
+dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
 I: copying local configuration
+E: Failed autobuilding of package
+I: user script /srv/workspace/pbuilder/1681989/tmp/hooks/C01_cleanup starting
+debug output: disk usage on i-capture-the-hostname at Wed Mar 11 04:08:01 UTC 2026
+Filesystem      Size  Used Avail Use% Mounted on
+tmpfs            40G     0   40G   0% /dev/shm
+
+I: user script /srv/workspace/pbuilder/1681989/tmp/hooks/C01_cleanup finished
 I: unmounting dev/ptmx filesystem
 I: unmounting dev/pts filesystem
 I: unmounting dev/shm filesystem
 I: unmounting proc filesystem
 I: unmounting sys filesystem
 I: cleaning the build env 
-I: removing directory /srv/workspace/pbuilder/4159716 and its subdirectories
-I: Current time: Wed Feb  5 09:44:10 -12 2025
-I: pbuilder-time-stamp: 1738791850
+I: removing directory /srv/workspace/pbuilder/1681989 and its subdirectories