Diff of the two buildlogs:

--
--- b1/build.log	2024-04-16 21:25:13.818847614 +0000
+++ b2/build.log	2024-04-16 21:25:54.197122680 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon May 19 15:47:48 -12 2025
-I: pbuilder-time-stamp: 1747712868
+I: Current time: Wed Apr 17 11:25:16 +14 2024
+I: pbuilder-time-stamp: 1713302716
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -26,54 +26,86 @@
 dpkg-source: info: unpacking libcatmandu-importer-getjson-perl_0.52-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/19781/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/46909/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 Apr 16 21:25 /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/46909/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/46909/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='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]="21" [3]="1" [4]="release" [5]="i686-pc-linux-gnu")
+  BASH_VERSION='5.2.21(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='9803b59cd889430cad2686af950b105c'
-  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='19781'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=aa74509ded554cdcb0c7af2b90f0efb9
+  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=46909
   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.cuEZAOSQ/pbuilderrc_7DN4 --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.cuEZAOSQ/b1 --logfile b1/build.log libcatmandu-importer-getjson-perl_0.52-2.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://85.184.249.68:3128'
+  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.cuEZAOSQ/pbuilderrc_EpwA --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.cuEZAOSQ/b2 --logfile b2/build.log libcatmandu-importer-getjson-perl_0.52-2.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://78.137.99.97:3128
 I: uname -a
-  Linux ionos6-i386 6.1.0-20-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.85-1 (2024-04-11) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-20-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.85-1 (2024-04-11) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 May 17 17:48 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/19781/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Apr 16 11:24 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/46909/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -259,7 +291,7 @@
 Get: 136 http://deb.debian.org/debian trixie/main i386 libfurl-perl all 3.14-2 [49.4 kB]
 Get: 137 http://deb.debian.org/debian trixie/main i386 libjson-perl all 4.10000-1 [87.5 kB]
 Get: 138 http://deb.debian.org/debian trixie/main i386 libmodule-build-tiny-perl all 0.047-1 [12.6 kB]
-Fetched 25.0 MB in 0s (64.6 MB/s)
+Fetched 25.0 MB in 0s (63.1 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package netbase.
 (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 ... 19874 files and directories currently installed.)
@@ -833,7 +865,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/libcatmandu-importer-getjson-perl-0.52/ && 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  > ../libcatmandu-importer-getjson-perl_0.52-2_source.changes
+I: user script /srv/workspace/pbuilder/46909/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/46909/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libcatmandu-importer-getjson-perl-0.52/ && 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  > ../libcatmandu-importer-getjson-perl_0.52-2_source.changes
 dpkg-buildpackage: info: source package libcatmandu-importer-getjson-perl
 dpkg-buildpackage: info: source version 0.52-2
 dpkg-buildpackage: info: source distribution unstable
@@ -852,8 +888,8 @@
 Creating new 'Build' script for 'Catmandu-Importer-getJSON' version '0.52'
    dh_auto_build
 	/usr/bin/perl Build
-cp lib/Catmandu/Importer/getJSON.pm blib/lib/Catmandu/Importer/getJSON.pm
 cp lib/Catmandu/Fix/get_json.pm blib/lib/Catmandu/Fix/get_json.pm
+cp lib/Catmandu/Importer/getJSON.pm blib/lib/Catmandu/Importer/getJSON.pm
    dh_auto_test
 	/usr/bin/perl Build test --verbose 1
 t/00_compile.t .......... 
@@ -916,14 +952,14 @@
 ok
 t/release-pod-syntax.t .. skipped: these tests are for release candidate testing
 All tests successful.
-Files=5, Tests=30,  1 wallclock secs ( 0.02 usr  0.02 sys +  1.20 cusr  0.06 csys =  1.30 CPU)
+Files=5, Tests=30,  2 wallclock secs ( 0.06 usr  0.02 sys +  2.04 cusr  0.14 csys =  2.26 CPU)
 Result: PASS
    create-stamp debian/debhelper-build-stamp
    dh_prep
    dh_auto_install --destdir=debian/libcatmandu-importer-getjson-perl/
 	/usr/bin/perl Build install --destdir /build/reproducible-path/libcatmandu-importer-getjson-perl-0.52/debian/libcatmandu-importer-getjson-perl --create_packlist 0
-Installing /build/reproducible-path/libcatmandu-importer-getjson-perl-0.52/debian/libcatmandu-importer-getjson-perl/usr/share/perl5/Catmandu/Fix/get_json.pm
 Installing /build/reproducible-path/libcatmandu-importer-getjson-perl-0.52/debian/libcatmandu-importer-getjson-perl/usr/share/perl5/Catmandu/Importer/getJSON.pm
+Installing /build/reproducible-path/libcatmandu-importer-getjson-perl-0.52/debian/libcatmandu-importer-getjson-perl/usr/share/perl5/Catmandu/Fix/get_json.pm
 Installing /build/reproducible-path/libcatmandu-importer-getjson-perl-0.52/debian/libcatmandu-importer-getjson-perl/usr/share/man/man3/Catmandu::Fix::get_json.3pm
 Installing /build/reproducible-path/libcatmandu-importer-getjson-perl-0.52/debian/libcatmandu-importer-getjson-perl/usr/share/man/man3/Catmandu::Importer::getJSON.3pm
    dh_installdocs
@@ -947,12 +983,14 @@
 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/46909/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/46909/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/19781 and its subdirectories
-I: Current time: Mon May 19 15:48:13 -12 2025
-I: pbuilder-time-stamp: 1747712893
+I: removing directory /srv/workspace/pbuilder/46909 and its subdirectories
+I: Current time: Wed Apr 17 11:25:53 +14 2024
+I: pbuilder-time-stamp: 1713302753