Diff of the two buildlogs:

--
--- b1/build.log	2024-12-21 00:15:57.954321726 +0000
+++ b2/build.log	2024-12-21 00:27:48.725817194 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu Jan 22 18:30:08 -12 2026
-I: pbuilder-time-stamp: 1769149808
+I: Current time: Sat Dec 21 14:16:02 +14 2024
+I: pbuilder-time-stamp: 1734740162
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -30,53 +30,86 @@
 dpkg-source: info: applying gcc14.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/11884/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/54303/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos12-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 Dec 21 00:16 /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/54303/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/54303/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=6 '
-  DISTRIBUTION='trixie'
-  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=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=i686
+  HOST_ARCH=i386
   IFS=' 	
   '
-  INVOCATION_ID='79d6ec5039384bd0bbd34c3a540896b4'
-  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='11884'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=857f2b1a2d444f8aa93f7cb258868808
+  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=54303
   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.8tyHcqQv/pbuilderrc_OHx1 --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.8tyHcqQv/b1 --logfile b1/build.log pushover_1.1-6.dsc'
-  SUDO_GID='111'
-  SUDO_UID='104'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
+  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.8tyHcqQv/pbuilderrc_F47R --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.8tyHcqQv/b2 --logfile b2/build.log pushover_1.1-6.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://46.16.76.132:3128
 I: uname -a
-  Linux infom08-i386 6.11.5+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.11.5-1~bpo12+1 (2024-11-11) 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  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/11884/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/54303/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -456,7 +489,7 @@
 Get: 319 http://deb.debian.org/debian trixie/main i386 libsdl2-ttf-2.0-0 i386 2.22.0+dfsg-1+b1 [32.4 kB]
 Get: 320 http://deb.debian.org/debian trixie/main i386 libsdl2-ttf-dev i386 2.22.0+dfsg-1+b1 [45.4 kB]
 Get: 321 http://deb.debian.org/debian trixie/main i386 povray i386 1:3.7.0.10-3+b2 [1362 kB]
-Fetched 169 MB in 3s (61.0 MB/s)
+Fetched 169 MB in 4s (41.3 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libfftw3-double3: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 ... 19946 files and directories currently installed.)
@@ -1496,8 +1529,8 @@
 Setting up tzdata (2024b-4) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Fri Jan 23 06:30:45 UTC 2026.
-Universal Time is now:  Fri Jan 23 06:30:45 UTC 2026.
+Local time is now:      Sat Dec 21 00:17:20 UTC 2024.
+Universal Time is now:  Sat Dec 21 00:17:20 UTC 2024.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up libboost-atomic1.83.0:i386 (1.83.0-3.2+b2) ...
@@ -1806,7 +1839,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/pushover-1.1/ && 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  > ../pushover_1.1-6_source.changes
+I: user script /srv/workspace/pbuilder/54303/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/54303/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/pushover-1.1/ && 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  > ../pushover_1.1-6_source.changes
 dpkg-buildpackage: info: source package pushover
 dpkg-buildpackage: info: source version 1.1-6
 dpkg-buildpackage: info: source distribution unstable
@@ -1816,7 +1853,7 @@
  debian/rules clean
 dh clean
    dh_auto_clean
-	make -j6 clean
+	make -j10 clean
 make[1]: Entering directory '/build/reproducible-path/pushover-1.1'
 rm -f domino-chain *-domino-chain *-domino-chain.exe Domino-Chain*.zip _tmp/dominoes/assembler
 rm -rf data/ public/ _tmp/domino-chain/ _tmp/*-domino-chain/
@@ -3950,14 +3987,14 @@
    dh_perl
    dh_link
    dh_strip_nondeterminism
+	Normalized debian/domino-chain/usr/share/locale/it/LC_MESSAGES/domino-chain.mo
+	Normalized debian/domino-chain/usr/share/locale/es/LC_MESSAGES/domino-chain.mo
+	Normalized debian/domino-chain/usr/share/locale/ru/LC_MESSAGES/domino-chain.mo
+	Normalized debian/domino-chain/usr/share/locale/fr/LC_MESSAGES/domino-chain.mo
 	Normalized debian/domino-chain/usr/share/locale/sv/LC_MESSAGES/domino-chain.mo
-	Normalized debian/domino-chain/usr/share/locale/de/LC_MESSAGES/domino-chain.mo
 	Normalized debian/domino-chain/usr/share/locale/cs/LC_MESSAGES/domino-chain.mo
+	Normalized debian/domino-chain/usr/share/locale/de/LC_MESSAGES/domino-chain.mo
 	Normalized debian/domino-chain/usr/share/locale/eo/LC_MESSAGES/domino-chain.mo
-	Normalized debian/domino-chain/usr/share/locale/fr/LC_MESSAGES/domino-chain.mo
-	Normalized debian/domino-chain/usr/share/locale/ru/LC_MESSAGES/domino-chain.mo
-	Normalized debian/domino-chain/usr/share/locale/it/LC_MESSAGES/domino-chain.mo
-	Normalized debian/domino-chain/usr/share/locale/es/LC_MESSAGES/domino-chain.mo
    dh_compress
    dh_fixperms
    dh_missing
@@ -3969,10 +4006,10 @@
    dh_gencontrol
    dh_md5sums
    dh_builddeb
-dpkg-deb: building package 'domino-chain-dbgsym' in '../domino-chain-dbgsym_1.1-6_i386.deb'.
-dpkg-deb: building package 'domino-chain' in '../domino-chain_1.1-6_i386.deb'.
 dpkg-deb: building package 'domino-chain-music' in '../domino-chain-music_1.1-6_all.deb'.
 dpkg-deb: building package 'pushover' in '../pushover_1.1-6_all.deb'.
+dpkg-deb: building package 'domino-chain-dbgsym' in '../domino-chain-dbgsym_1.1-6_i386.deb'.
+dpkg-deb: building package 'domino-chain' in '../domino-chain_1.1-6_i386.deb'.
  dpkg-genbuildinfo --build=binary -O../pushover_1.1-6_i386.buildinfo
  dpkg-genchanges --build=binary -O../pushover_1.1-6_i386.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -3980,12 +4017,14 @@
 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/54303/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/54303/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/11884 and its subdirectories
-I: Current time: Thu Jan 22 18:38:56 -12 2026
-I: pbuilder-time-stamp: 1769150336
+I: removing directory /srv/workspace/pbuilder/54303 and its subdirectories
+I: Current time: Sat Dec 21 14:27:48 +14 2024
+I: pbuilder-time-stamp: 1734740868