Diff of the two buildlogs:

--
--- b1/build.log	2025-02-20 22:23:08.214981582 +0000
+++ b2/build.log	2025-02-20 22:26:57.236653421 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Mar 25 16:44:02 -12 2026
-I: pbuilder-time-stamp: 1774500242
+I: Current time: Fri Feb 21 12:23:11 +14 2025
+I: pbuilder-time-stamp: 1740090191
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -22,52 +22,84 @@
 dpkg-source: info: unpacking python-aiodhcpwatcher_1.0.2-1.1.debian.tar.xz
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/1027215/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/4000542/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink04-arm64.
+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 Feb 20 22:23 /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/4000542/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/4000542/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='arm64'
-  DEBIAN_FRONTEND='noninteractive'
+  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]="aarch64-unknown-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=arm64
+  DEBIAN_FRONTEND=noninteractive
   DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=12 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  INVOCATION_ID='ecbb9574a2e64e92823b3ea44b3f3dae'
-  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='1027215'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=8010ed6b666d405583262c4205ac513a
+  LANG=C
+  LANGUAGE=nl_BE:nl
+  LC_ALL=C
+  MACHTYPE=aarch64-unknown-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=4000542
   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.HWs0he1b/pbuilderrc_pdUR --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.HWs0he1b/b1 --logfile b1/build.log python-aiodhcpwatcher_1.0.2-1.1.dsc'
-  SUDO_GID='109'
-  SUDO_UID='104'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://192.168.101.4:3128'
+  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.HWs0he1b/pbuilderrc_0vQF --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.HWs0he1b/b2 --logfile b2/build.log python-aiodhcpwatcher_1.0.2-1.1.dsc'
+  SUDO_GID=109
+  SUDO_UID=104
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://192.168.101.4:3128
 I: uname -a
-  Linux codethink03-arm64 6.1.0-31-cloud-arm64 #1 SMP Debian 6.1.128-1 (2025-02-07) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-31-cloud-arm64 #1 SMP Debian 6.1.128-1 (2025-02-07) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/1027215/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/4000542/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -258,7 +290,7 @@
 Get: 131 http://deb.debian.org/debian trixie/main arm64 python3-pytest-cov all 5.0.0-1 [26.8 kB]
 Get: 132 http://deb.debian.org/debian trixie/main arm64 python3-pytest-subtests all 0.13.1-1 [11.9 kB]
 Get: 133 http://deb.debian.org/debian trixie/main arm64 python3-scapy all 2.6.1+dfsg-1 [1869 kB]
-Fetched 46.3 MB in 0s (111 MB/s)
+Fetched 46.3 MB in 1s (47.4 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-minimal:arm64.
 (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 ... 19923 files and directories currently installed.)
@@ -694,8 +726,8 @@
 Setting up tzdata (2025a-2) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Thu Mar 26 04:44:41 UTC 2026.
-Universal Time is now:  Thu Mar 26 04:44:41 UTC 2026.
+Local time is now:      Thu Feb 20 22:24:15 UTC 2025.
+Universal Time is now:  Thu Feb 20 22:24:15 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -831,7 +863,11 @@
 fakeroot is already the newest version (1.37-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/python-aiodhcpwatcher-1.0.2/ && 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  > ../python-aiodhcpwatcher_1.0.2-1.1_source.changes
+I: user script /srv/workspace/pbuilder/4000542/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/4000542/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/python-aiodhcpwatcher-1.0.2/ && 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  > ../python-aiodhcpwatcher_1.0.2-1.1_source.changes
 dpkg-buildpackage: info: source package python-aiodhcpwatcher
 dpkg-buildpackage: info: source version 1.0.2-1.1
 dpkg-buildpackage: info: source distribution unstable
@@ -894,7 +930,7 @@
 TOTAL                          129     10     32      5    88%
 
 
-============================== 6 passed in 1.41s ===============================
+============================== 6 passed in 4.21s ===============================
 I: pybuild base:311: cd /build/reproducible-path/python-aiodhcpwatcher-1.0.2/.pybuild/cpython3_3.13/build; python3.13 -m pytest -v tests
 /usr/lib/python3/dist-packages/pytest_asyncio/plugin.py:207: PytestDeprecationWarning: The configuration option "asyncio_default_fixture_loop_scope" is unset.
 The event loop scope for asynchronous fixtures will default to the fixture caching scope. Future versions of pytest-asyncio will default the loop scope for asynchronous fixtures to function scope. Set the default fixture loop scope explicitly in order to avoid unexpected behavior in the future. Valid fixture loop scopes are: "function", "class", "module", "package", "session"
@@ -924,7 +960,7 @@
 TOTAL                          129     10     32      5    88%
 
 
-============================== 6 passed in 0.87s ===============================
+============================== 6 passed in 1.88s ===============================
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=pybuild
    dh_prep -O--buildsystem=pybuild
@@ -954,14 +990,14 @@
 	cat /usr/share/openstack-pkg-tools/init-script-template >>$MYINIT.init ; \
 	pkgos-gen-systemd-unit $i ; \
 done
-+ ls -1 debian/*.init.in
+++ ls -1 'debian/*.init.in'
 ls: cannot access 'debian/*.init.in': No such file or directory
 # If there's a service.in file, use that one instead of the generated one
 set -e ; set -x ; for i in `ls -1 debian/*.service.in`; do \
 	MYPKG=`echo $i | sed s/.service.in//` ; \
 	cp $MYPKG.service.in $MYPKG.service ; \
 done
-+ ls -1 debian/*.service.in
+++ ls -1 'debian/*.service.in'
 ls: cannot access 'debian/*.service.in': No such file or directory
 # Generate the systemd unit if there's no already existing .service.in
 set -e ; set -x ; for i in `ls debian/*.init.in` ; do \
@@ -970,7 +1006,7 @@
 		pkgos-gen-systemd-unit $i ; \
 	fi \
 done
-+ ls debian/*.init.in
+++ ls 'debian/*.init.in'
 ls: cannot access 'debian/*.init.in': No such file or directory
 dh_installinit --error-handler=true
 make[1]: Leaving directory '/build/reproducible-path/python-aiodhcpwatcher-1.0.2'
@@ -985,14 +1021,14 @@
 	cat /usr/share/openstack-pkg-tools/init-script-template >>$MYINIT.init ; \
 	pkgos-gen-systemd-unit $i ; \
 done
-+ ls -1 debian/*.init.in
+++ ls -1 'debian/*.init.in'
 ls: cannot access 'debian/*.init.in': No such file or directory
 # If there's a service.in file, use that one instead of the generated one
 set -e ; set -x ; for i in `ls -1 debian/*.service.in`; do \
 	MYPKG=`echo $i | sed s/.service.in//` ; \
 	cp $MYPKG.service.in $MYPKG.service ; \
 done
-+ ls -1 debian/*.service.in
+++ ls -1 'debian/*.service.in'
 ls: cannot access 'debian/*.service.in': No such file or directory
 # Generate the systemd unit if there's no already existing .service.in
 set -e ; set -x ; for i in `ls debian/*.init.in` ; do \
@@ -1001,7 +1037,7 @@
 		pkgos-gen-systemd-unit $i ; \
 	fi \
 done
-+ ls debian/*.init.in
+++ ls 'debian/*.init.in'
 ls: cannot access 'debian/*.init.in': No such file or directory
 dh_installsystemd
 make[1]: Leaving directory '/build/reproducible-path/python-aiodhcpwatcher-1.0.2'
@@ -1033,12 +1069,14 @@
 dpkg-buildpackage: info: binary-only upload (no source included)
 dpkg-genchanges: info: not including original source code in upload
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/4000542/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/4000542/tmp/hooks/B01_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/1027215 and its subdirectories
-I: Current time: Wed Mar 25 16:46:07 -12 2026
-I: pbuilder-time-stamp: 1774500367
+I: removing directory /srv/workspace/pbuilder/4000542 and its subdirectories
+I: Current time: Fri Feb 21 12:26:56 +14 2025
+I: pbuilder-time-stamp: 1740090416