Diff of the two buildlogs:

--
--- b1/build.log	2025-01-22 13:00:02.776927921 +0000
+++ b2/build.log	2025-01-22 13:02:29.342328702 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Jan 22 00:53:45 -12 2025
-I: pbuilder-time-stamp: 1737550425
+I: Current time: Thu Jan 23 03:00:12 +14 2025
+I: pbuilder-time-stamp: 1737550812
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -24,52 +24,84 @@
 dpkg-source: info: applying 0001-skip-test_find_pyproject.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/17706/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/885/tmp/hooks/D01_modify_environment starting
+debug: Running on virt32c.
+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 22 13:00 /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/885/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/885/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='armhf'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=3 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='armhf'
+  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]="arm-unknown-linux-gnueabihf")
+  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=armhf
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=4 '
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=arm
+  HOST_ARCH=armhf
   IFS=' 	
   '
-  INVOCATION_ID='4e0c695670494f09b3e5d6dfafd431e2'
-  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='17706'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=8615b9e6a13b4092ae7db0e113e9c433
+  LANG=C
+  LANGUAGE=it_CH:it
+  LC_ALL=C
+  MACHTYPE=arm-unknown-linux-gnueabihf
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnueabihf
+  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=885
   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.2g6m6Udb/pbuilderrc_AFP2 --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.2g6m6Udb/b1 --logfile b1/build.log pytoolconfig_1.3.1-3.dsc'
-  SUDO_GID='114'
-  SUDO_UID='108'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://10.0.0.15:3142/'
+  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.2g6m6Udb/pbuilderrc_cReQ --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.2g6m6Udb/b2 --logfile b2/build.log pytoolconfig_1.3.1-3.dsc'
+  SUDO_GID=113
+  SUDO_UID=107
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://10.0.0.15:3142/
 I: uname -a
-  Linux virt64a 6.1.0-30-arm64 #1 SMP Debian 6.1.124-1 (2025-01-12) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-30-armmp-lpae #1 SMP Debian 6.1.124-1 (2025-01-12) armv7l GNU/Linux
 I: ls -l /bin
   lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/17706/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/885/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -241,7 +273,7 @@
 Get: 110 http://deb.debian.org/debian unstable/main armhf sphinx-common all 8.1.3-4 [616 kB]
 Get: 111 http://deb.debian.org/debian unstable/main armhf python3-sphinx all 8.1.3-4 [468 kB]
 Get: 112 http://deb.debian.org/debian unstable/main armhf python3-tabulate all 0.9.0-1 [45.9 kB]
-Fetched 41.3 MB in 4s (11.2 MB/s)
+Fetched 41.3 MB in 1s (35.4 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-minimal:armhf.
 (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 ... 19563 files and directories currently installed.)
@@ -606,8 +638,8 @@
 Setting up tzdata (2025a-1) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Wed Jan 22 12:55:05 UTC 2025.
-Universal Time is now:  Wed Jan 22 12:55:05 UTC 2025.
+Local time is now:      Wed Jan 22 13:01:15 UTC 2025.
+Universal Time is now:  Wed Jan 22 13:01:15 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -726,7 +758,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/pytoolconfig-1.3.1/ && 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  > ../pytoolconfig_1.3.1-3_source.changes
+I: user script /srv/workspace/pbuilder/885/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/885/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/pytoolconfig-1.3.1/ && 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  > ../pytoolconfig_1.3.1-3_source.changes
 dpkg-buildpackage: info: source package pytoolconfig
 dpkg-buildpackage: info: source version 1.3.1-3
 dpkg-buildpackage: info: source distribution unstable
@@ -802,8 +838,8 @@
 tests/test_pytoolconfig.py .......                                       [ 87%]
 tests/test_utils.py ..                                                   [100%]
 
-============================== 16 passed in 1.22s ==============================
-	rm -fr -- /tmp/dh-xdg-rundir-onk35vs9
+============================== 16 passed in 0.51s ==============================
+	rm -fr -- /tmp/dh-xdg-rundir-kPzDdBbv
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=pybuild
    dh_prep -O--buildsystem=pybuild
@@ -838,7 +874,7 @@
 D: dh_python3 pydist:175: trying to find dependency for packaging>=23.2 (python=None)
 D: dh_python3 pydist:209: dependency: module seems to be installed
 D: dh_python3 pydist:277: dependency: included in build-deps with limits 
-D: dh_python3 depends:253: D={'python3:any', 'python3-packaging (>= 23.2)', 'python3-tomli | python3-supported-min (>= 3.11)'}; R=[]; S=[]; E=[], B=[]; RT=[]
+D: dh_python3 depends:253: D={'python3-packaging (>= 23.2)', 'python3-tomli | python3-supported-min (>= 3.11)', 'python3:any'}; R=[]; S=[]; E=[], B=[]; RT=[]
    dh_installsystemduser -O--buildsystem=pybuild
    dh_perl -O--buildsystem=pybuild
    dh_link -O--buildsystem=pybuild
@@ -883,12 +919,14 @@
 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/885/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/885/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/17706 and its subdirectories
-I: Current time: Wed Jan 22 00:59:58 -12 2025
-I: pbuilder-time-stamp: 1737550798
+I: removing directory /srv/workspace/pbuilder/885 and its subdirectories
+I: Current time: Thu Jan 23 03:02:25 +14 2025
+I: pbuilder-time-stamp: 1737550945