Diff of the two buildlogs:

--
--- b1/build.log	2025-01-09 13:59:13.990904544 +0000
+++ b2/build.log	2025-01-09 14:01:10.017613474 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu Jan  9 01:53:50 -12 2025
-I: pbuilder-time-stamp: 1736430830
+I: Current time: Thu Feb 12 10:22:15 +14 2026
+I: pbuilder-time-stamp: 1770841335
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -29,54 +29,86 @@
 dpkg-source: info: applying sphinx-does-not-call-_resolve_broken_refs.patch
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/45373/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/1112/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos6-i386.
+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 11 20:22 /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/1112/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/1112/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='i386'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=11 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='i386'
+  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]="i686-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=i386
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=21 '
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=i686
+  HOST_ARCH=i386
   IFS=' 	
   '
-  INVOCATION_ID='9f2501c1761742a3a2aa93a010ffde91'
-  LANG='C'
-  LANGUAGE='en_US:en'
-  LC_ALL='C'
-  LD_LIBRARY_PATH='/usr/lib/libeatmydata'
-  LD_PRELOAD='libeatmydata.so'
-  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='45373'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=75b459140b3a4fa08f05775a25f8c329
+  LANG=C
+  LANGUAGE=de_CH:de
+  LC_ALL=C
+  LD_LIBRARY_PATH=/usr/lib/libeatmydata
+  LD_PRELOAD=libeatmydata.so
+  MACHTYPE=i686-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=1112
   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.vcHy4ykt/pbuilderrc_W4Pw --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.vcHy4ykt/b1 --logfile b1/build.log python-jsonschema_4.19.2-6.dsc'
-  SUDO_GID='112'
-  SUDO_UID='107'
-  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.vcHy4ykt/pbuilderrc_grw3 --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.vcHy4ykt/b2 --logfile b2/build.log python-jsonschema_4.19.2-6.dsc'
+  SUDO_GID=112
+  SUDO_UID=107
+  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 ionos2-i386 6.1.0-28-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-28-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.119-1 (2024-11-22) 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/45373/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/1112/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -328,7 +360,7 @@
 Get: 156 http://deb.debian.org/debian unstable/main i386 python3-twisted all 24.11.0-1 [2047 kB]
 Get: 157 http://deb.debian.org/debian unstable/main i386 python3-uritemplate all 4.1.1-3 [10.6 kB]
 Get: 158 http://deb.debian.org/debian unstable/main i386 python3-webcolors all 1.13-1 [15.3 kB]
-Fetched 57.9 MB in 2s (24.0 MB/s)
+Fetched 57.9 MB in 2s (23.5 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-minimal:i386.
 (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 ... 19834 files and directories currently installed.)
@@ -842,8 +874,8 @@
 Setting up tzdata (2024b-5) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Thu Jan  9 13:55:06 UTC 2025.
-Universal Time is now:  Thu Jan  9 13:55:06 UTC 2025.
+Local time is now:      Wed Feb 11 20:22:38 UTC 2026.
+Universal Time is now:  Wed Feb 11 20:22:38 UTC 2026.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up retry (1.0.5-3) ...
@@ -1004,7 +1036,11 @@
 fakeroot is already the newest version (1.36.2-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/python-jsonschema-4.19.2/ && 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-jsonschema_4.19.2-6_source.changes
+I: user script /srv/workspace/pbuilder/1112/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/1112/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/python-jsonschema-4.19.2/ && 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-jsonschema_4.19.2-6_source.changes
 dpkg-buildpackage: info: source package python-jsonschema
 dpkg-buildpackage: info: source version 4.19.2-6
 dpkg-buildpackage: info: source distribution unstable
@@ -1045,9 +1081,11 @@
 set -e ; set -x ; for pyvers in 3.12 3.13 ; do \
 	python$pyvers -m build --skip-dependency-check --no-isolation --wheel --outdir /build/reproducible-path/python-jsonschema-4.19.2/debian/tmp ; \
 done
++ for pyvers in 3.12 3.13
 + python3.12 -m build --skip-dependency-check --no-isolation --wheel --outdir /build/reproducible-path/python-jsonschema-4.19.2/debian/tmp
 * Building wheel...
 Successfully built jsonschema-4.19.2-py3-none-any.whl
++ for pyvers in 3.12 3.13
 + python3.13 -m build --skip-dependency-check --no-isolation --wheel --outdir /build/reproducible-path/python-jsonschema-4.19.2/debian/tmp
 * Building wheel...
 Successfully built jsonschema-4.19.2-py3-none-any.whl
@@ -1174,7 +1212,7 @@
 ........................................................................ [ 99%]
 .............................................                            [100%]
 
-====================== 7264 passed, 273 skipped in 41.74s ======================
+====================== 7264 passed, 273 skipped in 16.61s ======================
 I: pybuild base:311: cd /build/reproducible-path/python-jsonschema-4.19.2/.pybuild/cpython3_3.13_jsonschema/build; python3.13 -m pytest -k 'not test_ipv4_validation_of_IP_addresses_leading_zeroes_should_be_rejected_as_they_are_treated_as_octals'
 ============================= test session starts ==============================
 platform linux -- Python 3.13.1, pytest-8.3.4, pluggy-1.5.0
@@ -1297,7 +1335,7 @@
 ........................................................................ [ 99%]
 .............................................                            [100%]
 
-====================== 7264 passed, 273 skipped in 31.25s ======================
+====================== 7264 passed, 273 skipped in 15.66s ======================
 make[1]: Leaving directory '/build/reproducible-path/python-jsonschema-4.19.2'
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=pybuild
@@ -1417,8 +1455,8 @@
 preparing documents... done
 copying assets... 
 copying static files... 
-Writing evaluated template result to /build/reproducible-path/python-jsonschema-4.19.2/debian/python-jsonschema-doc/usr/share/doc/python-jsonschema-doc/html/_static/documentation_options.js
 Writing evaluated template result to /build/reproducible-path/python-jsonschema-4.19.2/debian/python-jsonschema-doc/usr/share/doc/python-jsonschema-doc/html/_static/basic.css
+Writing evaluated template result to /build/reproducible-path/python-jsonschema-4.19.2/debian/python-jsonschema-doc/usr/share/doc/python-jsonschema-doc/html/_static/documentation_options.js
 Writing evaluated template result to /build/reproducible-path/python-jsonschema-4.19.2/debian/python-jsonschema-doc/usr/share/doc/python-jsonschema-doc/html/_static/language_data.js
 Writing evaluated template result to /build/reproducible-path/python-jsonschema-4.19.2/debian/python-jsonschema-doc/usr/share/doc/python-jsonschema-doc/html/_static/alabaster.css
 Writing evaluated template result to /build/reproducible-path/python-jsonschema-4.19.2/debian/python-jsonschema-doc/usr/share/doc/python-jsonschema-doc/html/_static/copybutton.js
@@ -1508,9 +1546,9 @@
 
 The HTML pages are in debian/python-jsonschema-doc/usr/share/doc/python-jsonschema-doc/html.
 dh_sphinxdoc
-dh_sphinxdoc: warning: ignoring unknown JavaScript code: debian/python-jsonschema-doc/usr/share/doc/python-jsonschema-doc/html/_static/copybutton_funcs.js
 dh_sphinxdoc: warning: ignoring unknown JavaScript code: debian/python-jsonschema-doc/usr/share/doc/python-jsonschema-doc/html/_static/copybutton.js
 dh_sphinxdoc: warning: ignoring unknown JavaScript code: debian/python-jsonschema-doc/usr/share/doc/python-jsonschema-doc/html/_static/clipboard.min.js
+dh_sphinxdoc: warning: ignoring unknown JavaScript code: debian/python-jsonschema-doc/usr/share/doc/python-jsonschema-doc/html/_static/copybutton_funcs.js
 make[1]: Leaving directory '/build/reproducible-path/python-jsonschema-4.19.2'
    debian/rules override_dh_installchangelogs
 make[1]: Entering directory '/build/reproducible-path/python-jsonschema-4.19.2'
@@ -1534,14 +1572,14 @@
 	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 \
@@ -1550,7 +1588,7 @@
 		pkgos-gen-systemd-unit $i ; \
 	fi \
 done
-+ ls debian/*.init.in
+++ ls 'debian/*.init.in'
 ls: cannot access 'debian/*.init.in': No such file or directory
 dh_installinit --error-handler=true
 make[1]: Leaving directory '/build/reproducible-path/python-jsonschema-4.19.2'
@@ -1565,14 +1603,14 @@
 	cat /usr/share/openstack-pkg-tools/init-script-template >>$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 \
@@ -1581,7 +1619,7 @@
 		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-jsonschema-4.19.2'
@@ -1616,12 +1654,14 @@
 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/1112/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/1112/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/45373 and its subdirectories
-I: Current time: Thu Jan  9 01:59:13 -12 2025
-I: pbuilder-time-stamp: 1736431153
+I: removing directory /srv/workspace/pbuilder/1112 and its subdirectories
+I: Current time: Thu Feb 12 10:24:08 +14 2026
+I: pbuilder-time-stamp: 1770841448