Diff of the two buildlogs:

--
--- b1/build.log	2025-01-29 14:57:02.822315960 +0000
+++ b2/build.log	2025-01-29 15:02:03.464731706 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Tue Mar  3 09:18:23 -12 2026
-I: pbuilder-time-stamp: 1772572703
+I: Current time: Thu Jan 30 04:57:06 +14 2025
+I: pbuilder-time-stamp: 1738162626
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -22,52 +22,84 @@
 dpkg-source: info: unpacking kiwisolver_1.4.7-3.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/4175457/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/2594093/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 Jan 29 14:57 /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/2594093/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/2594093/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='unstable'
-  HOME='/root'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  INVOCATION_ID='11023656c3494e0dac7230c23f2ff48f'
-  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='4175457'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=c9c192da250547ed9798dd48c61023f9
+  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=2594093
   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.KGzrj5og/pbuilderrc_Edp4 --distribution unstable --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.KGzrj5og/b1 --logfile b1/build.log kiwisolver_1.4.7-3.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.KGzrj5og/pbuilderrc_GRSp --distribution unstable --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.KGzrj5og/b2 --logfile b2/build.log kiwisolver_1.4.7-3.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 6.1.0-30-cloud-arm64 #1 SMP Debian 6.1.124-1 (2025-01-12) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-30-cloud-arm64 #1 SMP Debian 6.1.124-1 (2025-01-12) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/4175457/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/2594093/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -214,7 +246,7 @@
 Get: 95 http://deb.debian.org/debian unstable/main arm64 python3-pluggy all 1.5.0-1 [26.9 kB]
 Get: 96 http://deb.debian.org/debian unstable/main arm64 python3-pytest all 8.3.4-1 [250 kB]
 Get: 97 http://deb.debian.org/debian unstable/main arm64 python3-setuptools-scm all 8.1.0-1 [40.5 kB]
-Fetched 50.3 MB in 0s (117 MB/s)
+Fetched 50.3 MB in 1s (54.6 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 ... 19957 files and directories currently installed.)
@@ -540,8 +572,8 @@
 Setting up tzdata (2025a-1) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Tue Mar  3 21:18:55 UTC 2026.
-Universal Time is now:  Tue Mar  3 21:18:55 UTC 2026.
+Local time is now:      Wed Jan 29 14:58:12 UTC 2025.
+Universal Time is now:  Wed Jan 29 14:58:12 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -631,7 +663,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/kiwisolver-1.4.7/ && 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  > ../kiwisolver_1.4.7-3_source.changes
+I: user script /srv/workspace/pbuilder/2594093/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/2594093/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/kiwisolver-1.4.7/ && 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  > ../kiwisolver_1.4.7-3_source.changes
 dpkg-buildpackage: info: source package kiwisolver
 dpkg-buildpackage: info: source version 1.4.7-3
 dpkg-buildpackage: info: source distribution unstable
@@ -699,7 +735,7 @@
 Copying py/kiwisolver.egg-info to build/bdist.linux-aarch64/wheel/./kiwisolver-1.4.7.egg-info
 running install_scripts
 creating build/bdist.linux-aarch64/wheel/kiwisolver-1.4.7.dist-info/WHEEL
-creating '/build/reproducible-path/kiwisolver-1.4.7/.pybuild/cpython3_3.12_kiwisolver/.tmp-trqorwn8/kiwisolver-1.4.7-cp312-cp312-linux_aarch64.whl' and adding 'build/bdist.linux-aarch64/wheel' to it
+creating '/build/reproducible-path/kiwisolver-1.4.7/.pybuild/cpython3_3.12_kiwisolver/.tmp-nl7bwktc/kiwisolver-1.4.7-cp312-cp312-linux_aarch64.whl' and adding 'build/bdist.linux-aarch64/wheel' to it
 adding 'kiwisolver/__init__.py'
 adding 'kiwisolver/_cext.cpython-312-aarch64-linux-gnu.so'
 adding 'kiwisolver/_cext.pyi'
@@ -762,7 +798,7 @@
 Copying py/kiwisolver.egg-info to build/bdist.linux-aarch64/wheel/./kiwisolver-1.4.7.egg-info
 running install_scripts
 creating build/bdist.linux-aarch64/wheel/kiwisolver-1.4.7.dist-info/WHEEL
-creating '/build/reproducible-path/kiwisolver-1.4.7/.pybuild/cpython3_3.13_kiwisolver/.tmp-vxkw47fw/kiwisolver-1.4.7-cp313-cp313-linux_aarch64.whl' and adding 'build/bdist.linux-aarch64/wheel' to it
+creating '/build/reproducible-path/kiwisolver-1.4.7/.pybuild/cpython3_3.13_kiwisolver/.tmp-ha9mrw3z/kiwisolver-1.4.7-cp313-cp313-linux_aarch64.whl' and adding 'build/bdist.linux-aarch64/wheel' to it
 adding 'kiwisolver/__init__.py'
 adding 'kiwisolver/_cext.cpython-313-aarch64-linux-gnu.so'
 adding 'kiwisolver/_cext.pyi'
@@ -839,8 +875,8 @@
 py/tests/test_variable.py::test_variable_sub PASSED                      [ 98%]
 py/tests/test_variable.py::test_variable_rich_compare_operations PASSED  [100%]
 
-============================== 50 passed in 0.54s ==============================
-'Objective\n---------\n + 2 * e2 + 1 * s8 + -2 * s10\n\nTableau\n-------\nv1 |  + 1 * s10\ne3 |  + 1 * e2 + -1 * s10\nv4 |  + -1 * d5 + -1 * s10\ns6 |  + -1 * s10\ne9 |  + 1 * s8 + -1 * s10\n\nInfeasible\n----------\ne3\ne9\n\nVariables\n---------\nfoo = v4\nbar = v1\n\nEdit Variables\n--------------\nbar\n\nConstraints\n-----------\n1 * foo + 1 * bar + 0 == 0  | strength = 1.001e+09\n1 * bar + 1 <= 0  | strength = 1.001e+09\n1 * bar + -0 >= 0  | strength = 1\n1 * bar + 0 == 0  | strength = 1\n\n\n'I: pybuild base:311: PYTHONPATH=/build/reproducible-path/kiwisolver-1.4.7/.pybuild/cpython3_3.13_kiwisolver/build python3.13 -m pytest -v py/tests/
+============================== 50 passed in 1.01s ==============================
+'Objective\n---------\n + 2 * e2 + 1 * s8 + -2 * s10\n\nTableau\n-------\nv1 |  + 1 * s10\ne3 |  + 1 * e2 + -1 * s10\nv4 |  + -1 * d5 + -1 * s10\ns6 |  + -1 * s10\ne9 |  + 1 * s8 + -1 * s10\n\nInfeasible\n----------\ne3\ne9\n\nVariables\n---------\nbar = v1\nfoo = v4\n\nEdit Variables\n--------------\nbar\n\nConstraints\n-----------\n1 * bar + 1 <= 0  | strength = 1.001e+09\n1 * bar + -0 >= 0  | strength = 1\n1 * bar + 1 * foo + 0 == 0  | strength = 1.001e+09\n1 * bar + 0 == 0  | strength = 1\n\n\n'I: pybuild base:311: PYTHONPATH=/build/reproducible-path/kiwisolver-1.4.7/.pybuild/cpython3_3.13_kiwisolver/build python3.13 -m pytest -v py/tests/
 ============================= test session starts ==============================
 platform linux -- Python 3.13.1, pytest-8.3.4, pluggy-1.5.0 -- /usr/bin/python3.13
 cachedir: .pytest_cache
@@ -900,8 +936,8 @@
 py/tests/test_variable.py::test_variable_sub PASSED                      [ 98%]
 py/tests/test_variable.py::test_variable_rich_compare_operations PASSED  [100%]
 
-============================== 50 passed in 0.50s ==============================
-'Objective\n---------\n + 2 * e2 + 1 * s8 + -2 * s10\n\nTableau\n-------\nv1 |  + 1 * s10\ne3 |  + 1 * e2 + -1 * s10\nv4 |  + -1 * d5 + -1 * s10\ns6 |  + -1 * s10\ne9 |  + 1 * s8 + -1 * s10\n\nInfeasible\n----------\ne3\ne9\n\nVariables\n---------\nbar = v1\nfoo = v4\n\nEdit Variables\n--------------\nbar\n\nConstraints\n-----------\n1 * bar + 0 == 0  | strength = 1\n1 * bar + -0 >= 0  | strength = 1\n1 * bar + 1 <= 0  | strength = 1.001e+09\n1 * bar + 1 * foo + 0 == 0  | strength = 1.001e+09\n\n\n'make[1]: Leaving directory '/build/reproducible-path/kiwisolver-1.4.7'
+============================== 50 passed in 0.83s ==============================
+'Objective\n---------\n + 2 * e2 + 1 * s8 + -2 * s10\n\nTableau\n-------\nv1 |  + 1 * s10\ne3 |  + 1 * e2 + -1 * s10\nv4 |  + -1 * d5 + -1 * s10\ns6 |  + -1 * s10\ne9 |  + 1 * s8 + -1 * s10\n\nInfeasible\n----------\ne3\ne9\n\nVariables\n---------\nbar = v1\nfoo = v4\n\nEdit Variables\n--------------\nbar\n\nConstraints\n-----------\n1 * bar + -0 >= 0  | strength = 1\n1 * bar + 0 == 0  | strength = 1\n1 * bar + 1 * foo + 0 == 0  | strength = 1.001e+09\n1 * bar + 1 <= 0  | strength = 1.001e+09\n\n\n'make[1]: Leaving directory '/build/reproducible-path/kiwisolver-1.4.7'
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=pybuild
    dh_prep -O--buildsystem=pybuild
@@ -937,8 +973,8 @@
 dpkg-gencontrol: warning: Suggests field of package python3-kiwisolver: substitution variable ${python3:Suggests} used, but is not defined
    dh_md5sums -O--buildsystem=pybuild
    dh_builddeb -O--buildsystem=pybuild
-dpkg-deb: building package 'python3-kiwisolver' in '../python3-kiwisolver_1.4.7-3_arm64.deb'.
 dpkg-deb: building package 'python3-kiwisolver-dbgsym' in '../python3-kiwisolver-dbgsym_1.4.7-3_arm64.deb'.
+dpkg-deb: building package 'python3-kiwisolver' in '../python3-kiwisolver_1.4.7-3_arm64.deb'.
  dpkg-genbuildinfo --build=binary -O../kiwisolver_1.4.7-3_arm64.buildinfo
  dpkg-genchanges --build=binary -O../kiwisolver_1.4.7-3_arm64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -947,12 +983,14 @@
 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/2594093/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/2594093/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/4175457 and its subdirectories
-I: Current time: Tue Mar  3 09:20:01 -12 2026
-I: pbuilder-time-stamp: 1772572801
+I: removing directory /srv/workspace/pbuilder/2594093 and its subdirectories
+I: Current time: Thu Jan 30 05:02:02 +14 2025
+I: pbuilder-time-stamp: 1738162922