Diff of the two buildlogs:

--
--- b1/build.log	2025-09-09 18:09:05.649319369 +0000
+++ b2/build.log	2025-09-09 18:13:08.125657175 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Oct 12 12:31:05 -12 2026
-I: pbuilder-time-stamp: 1791851465
+I: Current time: Wed Sep 10 08:09:07 +14 2025
+I: pbuilder-time-stamp: 1757441347
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/forky-reproducible-base.tgz]
 I: copying local configuration
@@ -20,53 +20,85 @@
 dpkg-source: info: unpacking pkg-perl-tools_0.83.tar.xz
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/1910887/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/2102605/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos1-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 Sep  9 18:09 /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/2102605/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/2102605/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=42 '
-  DISTRIBUTION='forky'
-  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]="3" [2]="3" [3]="1" [4]="release" [5]="x86_64-pc-linux-gnu")
+  BASH_VERSION='5.3.3(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=40 '
+  DIRSTACK=()
+  DISTRIBUTION=forky
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='a05c4482e667418aa42e4320f3d243fa'
-  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='1910887'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=b998e0c92f3c4c71af5be8fd8cfa43d7
+  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=2102605
   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.dqrLejZR/pbuilderrc_SEfz --distribution forky --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/forky-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.dqrLejZR/b1 --logfile b1/build.log pkg-perl-tools_0.83.dsc'
-  SUDO_GID='111'
-  SUDO_HOME='/var/lib/jenkins'
-  SUDO_UID='106'
-  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.dqrLejZR/pbuilderrc_kK26 --distribution forky --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/forky-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.dqrLejZR/b2 --logfile b2/build.log pkg-perl-tools_0.83.dsc'
+  SUDO_GID=110
+  SUDO_HOME=/var/lib/jenkins
+  SUDO_UID=105
+  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 ionos15-amd64 6.12.43+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.43-1 (2025-08-27) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.12.43+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.43-1 (2025-08-27) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Aug 10  2025 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/1910887/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Aug 10 12:30 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/2102605/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -465,7 +497,7 @@
 Get: 304 http://deb.debian.org/debian forky/main amd64 unzip amd64 6.0-29 [173 kB]
 Get: 305 http://deb.debian.org/debian forky/main amd64 lintian all 2.123.0 [1064 kB]
 Get: 306 http://deb.debian.org/debian forky/main amd64 spell amd64 1.1-2 [24.3 kB]
-Fetched 57.5 MB in 6s (9110 kB/s)
+Fetched 57.5 MB in 2s (29.0 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libexpat1:amd64.
 (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 ... 19898 files and directories currently installed.)
@@ -1483,8 +1515,8 @@
 Setting up tzdata (2025b-5) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Tue Oct 13 00:31:44 UTC 2026.
-Universal Time is now:  Tue Oct 13 00:31:44 UTC 2026.
+Local time is now:      Tue Sep  9 18:11:15 UTC 2025.
+Universal Time is now:  Tue Sep  9 18:11:15 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up libsystem-command-perl (1.122-1) ...
@@ -1743,7 +1775,11 @@
 fakeroot is already the newest version (1.37.1.2-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/pkg-perl-tools-0.83/ && 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  > ../pkg-perl-tools_0.83_source.changes
+I: user script /srv/workspace/pbuilder/2102605/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for forky
+I: user script /srv/workspace/pbuilder/2102605/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/pkg-perl-tools-0.83/ && 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  > ../pkg-perl-tools_0.83_source.changes
 dpkg-buildpackage: info: source package pkg-perl-tools
 dpkg-buildpackage: info: source version 0.83
 dpkg-buildpackage: info: source distribution unstable
@@ -1764,12 +1800,12 @@
    dh_autoreconf
    dh_auto_configure
    dh_auto_build
-	make -j42 "INSTALL=install --strip-program=true"
+	make -j40 "INSTALL=install --strip-program=true"
 make[1]: Entering directory '/build/reproducible-path/pkg-perl-tools-0.83'
 make[1]: Nothing to be done for 'all'.
 make[1]: Leaving directory '/build/reproducible-path/pkg-perl-tools-0.83'
    dh_auto_test
-	make -j42 test
+	make -j40 test
 make[1]: Entering directory '/build/reproducible-path/pkg-perl-tools-0.83'
 for f in `find bin scripts -maxdepth 1 -type f`; do \
     if head -1 $f | grep -q bin/perl; then \
@@ -1782,53 +1818,53 @@
 	sh -n $f && echo "$f shell script OK" || exit 1; \
     fi \
 done
-bin/dpt shell script OK
 bin/pristine-orig shell script OK
 bin/dh-make-perl-dev shell script OK
-bin/patchedit syntax OK
+bin/dpt shell script OK
 bin/bts-retitle bash script OK
 bin/bts-srcpkg syntax OK
-scripts/ci-failures syntax OK
-scripts/debian-upstream syntax OK
-scripts/gc shell script OK
-scripts/shell-lib shell script OK
-scripts/get-ubuntu-packages shell script OK
-scripts/uscan shell script OK
-scripts/lp-mass-subscribe python script OK
-scripts/cd shell script OK
-scripts/dch-note shell script OK
-scripts/rename-uploader shell script OK
-scripts/invite-github syntax OK
-scripts/new-upstream syntax OK
+bin/patchedit syntax OK
+scripts/import-orig bash script OK
 scripts/github-oauth syntax OK
+scripts/uscan shell script OK
+scripts/checkout shell script OK
+scripts/packagecheck bash script OK
+scripts/debian-upstream syntax OK
 scripts/fixup shell script OK
 scripts/missing-upstream syntax OK
-scripts/upstreamvcs shell script OK
-scripts/import-orig bash script OK
+scripts/shell-lib shell script OK
+scripts/invite-github syntax OK
+scripts/salsa syntax OK
+scripts/dch-note shell script OK
+scripts/repack.sh shell script OK
 scripts/forward syntax OK
-scripts/never-uploaded syntax OK
-scripts/push shell script OK
-scripts/clean-mr-repos syntax OK
+scripts/get-ubuntu-packages shell script OK
 scripts/missing-upload shell script OK
-scripts/missing-pristine-tar shell script OK
-scripts/checkout shell script OK
-scripts/takeover shell script OK
+scripts/push shell script OK
 scripts/gen-itp syntax OK
-scripts/salsa syntax OK
-scripts/packagecheck bash script OK
+scripts/gc shell script OK
+scripts/new-upstream syntax OK
+scripts/clean-mr-repos syntax OK
 scripts/ready-for-upload syntax OK
-scripts/repack.sh shell script OK
+scripts/lp-mass-subscribe python script OK
 scripts/prepare shell script OK
+scripts/rename-uploader shell script OK
+scripts/takeover shell script OK
+scripts/cd shell script OK
+scripts/never-uploaded syntax OK
+scripts/missing-pristine-tar shell script OK
+scripts/ci-failures syntax OK
+scripts/upstreamvcs shell script OK
 for f in `find . -name '*.pm' -type f`; do \
     perl -Ilib -c $f || exit 1; \
 done
 ./lintian/checks/PkgPerl/Nocheck.pm syntax OK
 ./lintian/checks/PkgPerl/Changelog.pm syntax OK
-./lib/Debian/PkgPerl/Bug.pm syntax OK
-./lib/Debian/PkgPerl/Util.pm syntax OK
 ./lib/Debian/PkgPerl/Patch.pm syntax OK
+./lib/Debian/PkgPerl/Util.pm syntax OK
 ./lib/Debian/PkgPerl/GitHub.pm syntax OK
 ./lib/Debian/PkgPerl/Message.pm syntax OK
+./lib/Debian/PkgPerl/Bug.pm syntax OK
 prove -l --verbose --recurse t/
 t/bug.t ..................... skipped: Set AUTHOR_TESTING to perform these tests
 t/github.t .................. skipped: Set AUTHOR_TESTING to perform this test
@@ -1879,7 +1915,7 @@
 ok 40 - POD test for man5/dpt-lib.sh.pod
 ok
 All tests successful.
-Files=6, Tests=40,  1 wallclock secs ( 0.03 usr  0.01 sys +  0.93 cusr  0.09 csys =  1.06 CPU)
+Files=6, Tests=40,  5 wallclock secs ( 0.07 usr  0.01 sys +  2.13 cusr  0.23 csys =  2.44 CPU)
 Result: PASS
 prove -l --verbose --recurse --ext .st t/
 t/spelling.st .. 
@@ -1929,7 +1965,7 @@
 1..43
 ok
 All tests successful.
-Files=1, Tests=43,  1 wallclock secs ( 0.03 usr  0.00 sys +  0.58 cusr  0.10 csys =  0.71 CPU)
+Files=1, Tests=43,  6 wallclock secs ( 0.06 usr  0.00 sys +  1.36 cusr  0.22 csys =  1.64 CPU)
 Result: PASS
 make[1]: Leaving directory '/build/reproducible-path/pkg-perl-tools-0.83'
    create-stamp debian/debhelper-build-stamp
@@ -2082,8 +2118,8 @@
    dh_gencontrol
    dh_md5sums
    dh_builddeb
-dpkg-deb: building package 'pkg-perl-tools' in '../pkg-perl-tools_0.83_all.deb'.
 dpkg-deb: building package 'pkg-perl-autopkgtest' in '../pkg-perl-autopkgtest_0.83_all.deb'.
+dpkg-deb: building package 'pkg-perl-tools' in '../pkg-perl-tools_0.83_all.deb'.
  dpkg-genbuildinfo --build=binary -O../pkg-perl-tools_0.83_amd64.buildinfo
  dpkg-genchanges --build=binary -O../pkg-perl-tools_0.83_amd64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -2091,12 +2127,14 @@
 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/2102605/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/2102605/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/1910887 and its subdirectories
-I: Current time: Mon Oct 12 12:32:05 -12 2026
-I: pbuilder-time-stamp: 1791851525
+I: removing directory /srv/workspace/pbuilder/2102605 and its subdirectories
+I: Current time: Wed Sep 10 08:13:07 +14 2025
+I: pbuilder-time-stamp: 1757441587