Diff of the two buildlogs:

--
--- b1/build.log	2025-03-15 00:38:38.325203591 +0000
+++ b2/build.log	2025-03-15 00:39:20.171320685 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Fri Mar 14 12:36:35 -12 2025
-I: pbuilder-time-stamp: 1741998995
+I: Current time: Fri Apr 17 21:01:39 +14 2026
+I: pbuilder-time-stamp: 1776409299
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -20,52 +20,84 @@
 dpkg-source: info: unpacking dgit_12.9.tar.gz
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3522505/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/3555147/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos15-amd64.
+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 Apr 17 07:01 /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/3555147/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/3555147/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='amd64'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=20 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='amd64'
+  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]="x86_64-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=amd64
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=42 '
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='0bc274766835463c92ca23729edcd3c1'
-  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='3522505'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=5d81ae9fadc3426eaed1dcc37bfa081d
+  LANG=C
+  LANGUAGE=et_EE:et
+  LC_ALL=C
+  MACHTYPE=x86_64-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=3555147
   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.1nKdopWk/pbuilderrc_UGpC --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.1nKdopWk/b1 --logfile b1/build.log dgit_12.9.dsc'
-  SUDO_GID='110'
-  SUDO_UID='105'
-  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.1nKdopWk/pbuilderrc_bx3X --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.1nKdopWk/b2 --logfile b2/build.log dgit_12.9.dsc'
+  SUDO_GID=111
+  SUDO_UID=106
+  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 ionos1-amd64 6.1.0-31-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.128-1 (2025-02-07) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.12.12+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.12-1~bpo12+1 (2025-02-23) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Mar  4 11:20 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3522505/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/3555147/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -152,7 +184,7 @@
 Get: 43 http://deb.debian.org/debian unstable/main amd64 po4a all 0.73-2 [2155 kB]
 Get: 44 http://deb.debian.org/debian unstable/main amd64 tcl8.6 amd64 8.6.16+dfsg-1 [121 kB]
 Get: 45 http://deb.debian.org/debian unstable/main amd64 tcl amd64 8.6.16 [4096 B]
-Fetched 26.2 MB in 1s (18.0 MB/s)
+Fetched 26.2 MB in 0s (98.1 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package sgml-base.
 (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 ... 19785 files and directories currently installed.)
@@ -309,8 +341,8 @@
 Setting up tzdata (2025a-2) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Sat Mar 15 00:38:04 UTC 2025.
-Universal Time is now:  Sat Mar 15 00:38:04 UTC 2025.
+Local time is now:      Fri Apr 17 07:02:03 UTC 2026.
+Universal Time is now:  Fri Apr 17 07:02:03 UTC 2026.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -360,7 +392,11 @@
 fakeroot is already the newest version (1.37-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/dgit-12.9/ && 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  > ../dgit_12.9_source.changes
+I: user script /srv/workspace/pbuilder/3555147/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/3555147/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/dgit-12.9/ && 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  > ../dgit_12.9_source.changes
 dpkg-buildpackage: info: source package dgit
 dpkg-buildpackage: info: source version 12.9
 dpkg-buildpackage: info: source distribution unstable
@@ -372,7 +408,7 @@
    debian/rules override_dh_auto_clean
 make[1]: Entering directory '/build/reproducible-path/dgit-12.9'
 dh_auto_clean
-	make -j20 distclean
+	make -j42 distclean
 make[2]: Entering directory '/build/reproducible-path/dgit-12.9'
 rm -rf tests/tmp substituted
 set -e; for m in dgit.1  dgit.7 dgit-user.7 dgit-nmu-simple.7 dgit-maint-native.7 dgit-maint-merge.7 dgit-maint-gbp.7 dgit-maint-debrebase.7 dgit-downstream-dsc.7 dgit-sponsorship.7 dgit-maint-bpo.7 git-debrebase.1 git-debrebase.5 git-debpush.1 tag2upload.5; do \
@@ -392,7 +428,7 @@
    dh_autoreconf
    dh_auto_configure
    dh_auto_build
-	make -j20 "INSTALL=install --strip-program=true"
+	make -j42 "INSTALL=install --strip-program=true"
 make[1]: Entering directory '/build/reproducible-path/dgit-12.9'
 m=dgit-user.7; pod2man --section=${m##*.} --date="Debian Project" \
 	--center="dgit" --name=${m%.*} \
@@ -435,11 +471,11 @@
 	tag2upload.5.pod tag2upload.5
 mkdir -p substituted
 mkdir -p substituted
+mkdir -p substituted
 perl -pe 's{\bundef\b}{'\''/usr/share/dgit/absurd'\''} if m/###substituted###/' \
 	<dgit >substituted/dgit
 perl -pe 's{\bundef\b}{'\''/usr/share/dgit/absurd'\''} if m/###substituted###/' \
 	<git-playtree-setup >substituted/git-playtree-setup
-mkdir -p substituted
 perl -pe 's{\bundef\b}{'\''/usr/share/dgit/absurd'\''} if m/###substituted###/' \
 	<mini-git-tag-fsck >substituted/mini-git-tag-fsck
 make[1]: Leaving directory '/build/reproducible-path/dgit-12.9'
@@ -459,7 +495,7 @@
 set -x; perl -i -pe 'next unless m/###substituted###/;' \
  -e 's{^(git_playtree_setup)=.*}{$1=/usr/share/git-debpush/git-playtree-setup};' \
 	debian/git-debpush/usr/bin/*
-+ perl -i -pe next unless m/###substituted###/; -e s{^(git_playtree_setup)=.*}{$1=/usr/share/git-debpush/git-playtree-setup}; debian/git-debpush/usr/bin/git-debpush
++ perl -i -pe 'next unless m/###substituted###/;' -e 's{^(git_playtree_setup)=.*}{$1=/usr/share/git-debpush/git-playtree-setup};' debian/git-debpush/usr/bin/git-debpush
 make install-gdr prefix=/usr DESTDIR=debian/git-debrebase perldir=/usr/share/dgit/gdr/perl5
 make[2]: Entering directory '/build/reproducible-path/dgit-12.9'
 install -d debian/git-debrebase/usr/bin \
@@ -491,7 +527,7 @@
 + mkdir -p debian/git-debrebase/usr/share/perl5/Debian/Dgit
 + mv -f debian/git-debrebase/usr/share/dgit/gdr/perl5/Debian/Dgit/GDR.pm debian/git-debrebase/usr/share/perl5/Debian/Dgit/GDR.pm
 + install -m 755 git-playtree-setup debian/git-debrebase/usr/share/dgit/gdr/perl5
-+ perl -i -p -e next unless m/###substituted###/; -e next unless s/^# (?=unshift \@INC,)//; -e die unless s{q\{\S+\}}{q{/usr/share/dgit/gdr/perl5}}; debian/git-debrebase/usr/share/perl5/Debian/Dgit/GDR.pm
++ perl -i -p -e 'next unless m/###substituted###/;' -e 'next unless s/^# (?=unshift \@INC,)//;' -e 'die unless s{q\{\S+\}}{q{/usr/share/dgit/gdr/perl5}};' debian/git-debrebase/usr/share/perl5/Debian/Dgit/GDR.pm
 make install-infra prefix=/usr DESTDIR=debian/dgit-infrastructure perldir=/usr/share/dgit/infra/perl5
 make[2]: Entering directory '/build/reproducible-path/dgit-12.9'
 install -d debian/dgit-infrastructure/usr/bin \
@@ -526,7 +562,7 @@
 + mkdir -p debian/dgit-infrastructure/usr/share/perl5/Debian/Dgit
 + mv -f debian/dgit-infrastructure/usr/share/dgit/infra/perl5/Debian/Dgit/Infra.pm debian/dgit-infrastructure/usr/share/perl5/Debian/Dgit/Infra.pm
 + install -m 755 git-playtree-setup debian/dgit-infrastructure/usr/share/dgit/infra/perl5
-+ perl -i -p -e next unless m/###substituted###/; -e next unless s/^# (?=unshift \@INC,)//; -e die unless s{q\{\S+\}}{q{/usr/share/dgit/infra/perl5}}; debian/dgit-infrastructure/usr/share/perl5/Debian/Dgit/Infra.pm
++ perl -i -p -e 'next unless m/###substituted###/;' -e 'next unless s/^# (?=unshift \@INC,)//;' -e 'die unless s{q\{\S+\}}{q{/usr/share/dgit/infra/perl5}};' debian/dgit-infrastructure/usr/share/perl5/Debian/Dgit/Infra.pm
 make install prefix=/usr DESTDIR=debian/dgit
 make[2]: Entering directory '/build/reproducible-path/dgit-12.9'
 install -d debian/dgit/usr/bin \
@@ -564,7 +600,7 @@
  sed "s#^#.common.pot: #" .common.potfiles; \
 mv -f .common.make.tmp .common.make
 TZ=UTC xgettext -Lperl -k__ -kf_ -ki_ --from-code=UTF-8 --package-name=dgit --package-version=ongoing ../dgit -o .dgit.pot.tmp && mv -f .dgit.pot.tmp .dgit.pot
-TZ=UTC xgettext -Lperl -k__ -kf_ -ki_ --from-code=UTF-8 --package-name=dgit --package-version=ongoing ../Debian/Dgit/ExitStatus.pm ../Debian/Dgit/Infra.pm ../Debian/Dgit/GDR.pm ../Debian/Dgit/Policy/Debian.pm ../Debian/Dgit/I18n.pm ../Debian/Dgit/ProtoConn.pm ../Debian/Dgit.pm -o .common.pot.tmp && mv -f .common.pot.tmp .common.pot
+TZ=UTC xgettext -Lperl -k__ -kf_ -ki_ --from-code=UTF-8 --package-name=dgit --package-version=ongoing ../Debian/Dgit/ExitStatus.pm ../Debian/Dgit/Policy/Debian.pm ../Debian/Dgit/Infra.pm ../Debian/Dgit/I18n.pm ../Debian/Dgit/ProtoConn.pm ../Debian/Dgit/GDR.pm ../Debian/Dgit.pm -o .common.pot.tmp && mv -f .common.pot.tmp .common.pot
 mkdir -p mo
 msgcat .dgit.pot .common.pot >mo/dgit.pot.tmp && mv -f mo/dgit.pot.tmp mo/dgit.pot
 cp en_US.po mo/dgit_en_US.po.tmp
@@ -633,12 +669,12 @@
 ! test -d ../.po4a.translated-only/translated || \
 cp -al --remove-destination ../.po4a.translated-only/translated .
 ./install-documents translated ../debian/tmp
-man/nl/man7/dgit-maint-gbp.7 man/nl/man7/dgit-maint-native.7 man/nl/man7/dgit-nmu-simple.7 man/nl/man7/dgit-user.7
-+ make -s -C translated -f ../../Makefile man/nl/man7/dgit-maint-gbp.7 man/nl/man7/dgit-maint-native.7 man/nl/man7/dgit-nmu-simple.7 man/nl/man7/dgit-user.7
+man/nl/man7/dgit-user.7 man/nl/man7/dgit-nmu-simple.7 man/nl/man7/dgit-maint-gbp.7 man/nl/man7/dgit-maint-native.7
++ make -s -C translated -f ../../Makefile man/nl/man7/dgit-user.7 man/nl/man7/dgit-nmu-simple.7 man/nl/man7/dgit-maint-gbp.7 man/nl/man7/dgit-maint-native.7
++ cp translated/man/nl/man7/dgit-user.7 ../debian/tmp/usr/share/man/nl/man7/dgit-user.7
++ cp translated/man/nl/man7/dgit-nmu-simple.7 ../debian/tmp/usr/share/man/nl/man7/dgit-nmu-simple.7
 + cp translated/man/nl/man7/dgit-maint-gbp.7 ../debian/tmp/usr/share/man/nl/man7/dgit-maint-gbp.7
 + cp translated/man/nl/man7/dgit-maint-native.7 ../debian/tmp/usr/share/man/nl/man7/dgit-maint-native.7
-+ cp translated/man/nl/man7/dgit-nmu-simple.7 ../debian/tmp/usr/share/man/nl/man7/dgit-nmu-simple.7
-+ cp translated/man/nl/man7/dgit-user.7 ../debian/tmp/usr/share/man/nl/man7/dgit-user.7
 make[2]: Leaving directory '/build/reproducible-path/dgit-12.9/po4a'
 make[1]: Leaving directory '/build/reproducible-path/dgit-12.9'
    dh_install
@@ -653,8 +689,8 @@
    dh_perl
    dh_link
    dh_strip_nondeterminism
-	Normalized debian/dgit/usr/share/locale/en_US/LC_MESSAGES/dgit.mo
 	Normalized debian/dgit/usr/share/locale/nl/LC_MESSAGES/dgit.mo
+	Normalized debian/dgit/usr/share/locale/en_US/LC_MESSAGES/dgit.mo
 	Normalized debian/git-debrebase/usr/share/locale/nl/LC_MESSAGES/git-debrebase.mo
 	Normalized debian/git-debrebase/usr/share/locale/en_US/LC_MESSAGES/git-debrebase.mo
    dh_compress
@@ -667,8 +703,8 @@
    debian/rules override_dh_gencontrol
 make[1]: Entering directory '/build/reproducible-path/dgit-12.9'
 dh_gencontrol
-dpkg-gencontrol: warning: package dgit: substitution variable ${perl:Depends} unused, but is defined
 dpkg-gencontrol: warning: package git-debrebase: substitution variable ${perl:Depends} unused, but is defined
+dpkg-gencontrol: warning: package dgit: substitution variable ${perl:Depends} unused, but is defined
 dpkg-gencontrol: warning: package dgit-infrastructure: substitution variable ${perl:Depends} unused, but is defined
 set -e; \
  cd debian/dgit; \
@@ -688,12 +724,14 @@
 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/3555147/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/3555147/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/3522505 and its subdirectories
-I: Current time: Fri Mar 14 12:38:37 -12 2025
-I: pbuilder-time-stamp: 1741999117
+I: removing directory /srv/workspace/pbuilder/3555147 and its subdirectories
+I: Current time: Fri Apr 17 21:02:19 +14 2026
+I: pbuilder-time-stamp: 1776409339