Diff of the two buildlogs:

--
--- b1/build.log	2025-01-17 20:40:23.270230686 +0000
+++ b2/build.log	2025-01-18 02:23:36.384789091 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu Feb 19 14:09:08 -12 2026
-I: pbuilder-time-stamp: 1771553348
+I: Current time: Sat Jan 18 10:42:07 +14 2025
+I: pbuilder-time-stamp: 1737146527
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -37,54 +37,86 @@
 dpkg-source: info: applying debian_1089003
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/30972/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/57141/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos2-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 Jan 17 20:53 /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/57141/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/57141/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=22 '
-  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=10 '
+  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='7055d6377412422f964918fe5aa1467e'
-  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='30972'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=88b69dad1e1145fb8730218fe716b1a5
+  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=57141
   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.nDn5qtAe/pbuilderrc_JoSk --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.nDn5qtAe/b1 --logfile b1/build.log texlive-extra_2024.20250114-1.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://213.165.73.152:3128'
+  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.nDn5qtAe/pbuilderrc_dM2s --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.nDn5qtAe/b2 --logfile b2/build.log texlive-extra_2024.20250114-1.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://46.16.76.132:3128
 I: uname -a
-  Linux ionos16-i386 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 6.1.0-30-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.124-1 (2025-01-12) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/30972/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/57141/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -323,7 +355,7 @@
 Get: 187 http://deb.debian.org/debian unstable/main i386 libpdfbox-java all 1:1.8.16-5 [5527 kB]
 Get: 188 http://deb.debian.org/debian unstable/main i386 sharutils i386 1:4.15.2-10 [267 kB]
 Get: 189 http://deb.debian.org/debian unstable/main i386 tex-common all 6.18 [32.5 kB]
-Fetched 250 MB in 7s (38.2 MB/s)
+Fetched 250 MB in 8s (31.1 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libsystemd-shared: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 ... 19837 files and directories currently installed.)
@@ -1315,7 +1347,11 @@
 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/texlive-extra-2024.20250114/ && 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  > ../texlive-extra_2024.20250114-1_source.changes
+I: user script /srv/workspace/pbuilder/57141/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/57141/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/texlive-extra-2024.20250114/ && 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  > ../texlive-extra_2024.20250114-1_source.changes
 dpkg-buildpackage: info: source package texlive-extra
 dpkg-buildpackage: info: source version 2024.20250114-1
 dpkg-buildpackage: info: source distribution unstable
@@ -1416,7 +1452,7 @@
       [jar] Building jar: /build/reproducible-path/texlive-extra-2024.20250114/texmf-dist/scripts/pax/pax.jar
 
 BUILD SUCCESSFUL
-Total time: 1 second
+Total time: 5 seconds
 # only needed for building
 rm -rf texmf-dist/source/latex/pax/lib
 # will not be installed, so dh_missing might complain, we do the links
@@ -1565,25 +1601,25 @@
 dh_gencontrol
 dh_md5sums
 dh_builddeb -Ntexlive-latex-extra-doc -- -Zxz
+dpkg-deb: building package 'texlive-fonts-extra' in '../texlive-fonts-extra_2024.20250114-1_all.deb'.
+dpkg-deb: building package 'texlive-science-doc' in '../texlive-science-doc_2024.20250114-1_all.deb'.
+dpkg-deb: building package 'texlive-publishers' in '../texlive-publishers_2024.20250114-1_all.deb'.
+dpkg-deb: building package 'texlive-bibtex-extra' in '../texlive-bibtex-extra_2024.20250114-1_all.deb'.
+dpkg-deb: building package 'texlive-publishers-doc' in '../texlive-publishers-doc_2024.20250114-1_all.deb'.
+dpkg-deb: building package 'texlive-fonts-extra-doc' in '../texlive-fonts-extra-doc_2024.20250114-1_all.deb'.
 dpkg-deb: building package 'texlive-plain-generic' in '../texlive-plain-generic_2024.20250114-1_all.deb'.
 dpkg-deb: building package 'texlive-games' in '../texlive-games_2024.20250114-1_all.deb'.
-dpkg-deb: building package 'texlive-music' in '../texlive-music_2024.20250114-1_all.deb'.
-dpkg-deb: building package 'texlive-humanities' in '../texlive-humanities_2024.20250114-1_all.deb'.
-dpkg-deb: building package 'texlive-humanities-doc' in '../texlive-humanities-doc_2024.20250114-1_all.deb'.
+dpkg-deb: building package 'texlive-font-utils' in '../texlive-font-utils_2024.20250114-1_all.deb'.
 dpkg-deb: building package 'texlive-science' in '../texlive-science_2024.20250114-1_all.deb'.
-dpkg-deb: building package 'texlive-bibtex-extra' in '../texlive-bibtex-extra_2024.20250114-1_all.deb'.
+dpkg-deb: building package 'texlive-formats-extra' in '../texlive-formats-extra_2024.20250114-1_all.deb'.
 dpkg-deb: building package 'texlive-fonts-extra-links' in '../texlive-fonts-extra-links_2024.20250114-1_all.deb'.
-dpkg-deb: building package 'texlive-publishers-doc' in '../texlive-publishers-doc_2024.20250114-1_all.deb'.
-dpkg-deb: building package 'texlive-science-doc' in '../texlive-science-doc_2024.20250114-1_all.deb'.
-dpkg-deb: building package 'texlive-fonts-extra' in '../texlive-fonts-extra_2024.20250114-1_all.deb'.
 dpkg-deb: building package 'texlive-pstricks' in '../texlive-pstricks_2024.20250114-1_all.deb'.
-dpkg-deb: building package 'texlive-formats-extra' in '../texlive-formats-extra_2024.20250114-1_all.deb'.
+dpkg-deb: building package 'texlive-extra-utils' in '../texlive-extra-utils_2024.20250114-1_all.deb'.
 dpkg-deb: building package 'texlive-pstricks-doc' in '../texlive-pstricks-doc_2024.20250114-1_all.deb'.
+dpkg-deb: building package 'texlive-humanities-doc' in '../texlive-humanities-doc_2024.20250114-1_all.deb'.
 dpkg-deb: building package 'texlive-latex-extra' in '../texlive-latex-extra_2024.20250114-1_all.deb'.
-dpkg-deb: building package 'texlive-publishers' in '../texlive-publishers_2024.20250114-1_all.deb'.
-dpkg-deb: building package 'texlive-fonts-extra-doc' in '../texlive-fonts-extra-doc_2024.20250114-1_all.deb'.
-dpkg-deb: building package 'texlive-font-utils' in '../texlive-font-utils_2024.20250114-1_all.deb'.
-dpkg-deb: building package 'texlive-extra-utils' in '../texlive-extra-utils_2024.20250114-1_all.deb'.
+dpkg-deb: building package 'texlive-humanities' in '../texlive-humanities_2024.20250114-1_all.deb'.
+dpkg-deb: building package 'texlive-music' in '../texlive-music_2024.20250114-1_all.deb'.
 dh_builddeb -ptexlive-latex-extra-doc -- -Zxz -Sextreme -z9
 dpkg-deb: building package 'texlive-latex-extra-doc' in '../texlive-latex-extra-doc_2024.20250114-1_all.deb'.
  dpkg-genbuildinfo --build=binary -O../texlive-extra_2024.20250114-1_i386.buildinfo
@@ -1593,12 +1629,14 @@
 dpkg-buildpackage: info: binary-only upload (no source included)
 dpkg-genchanges: info: including full source code in upload
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/57141/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/57141/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/30972 and its subdirectories
-I: Current time: Thu Feb 19 15:03:22 -12 2026
-I: pbuilder-time-stamp: 1771556602
+I: removing directory /srv/workspace/pbuilder/57141 and its subdirectories
+I: Current time: Sat Jan 18 16:23:35 +14 2025
+I: pbuilder-time-stamp: 1737167015