Diff of the two buildlogs:

--
--- b1/build.log	2024-10-17 05:58:18.153592020 +0000
+++ b2/build.log	2024-10-17 05:59:03.643656669 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Nov 19 00:20:52 -12 2025
-I: pbuilder-time-stamp: 1763554852
+I: Current time: Thu Oct 17 19:58:20 +14 2024
+I: pbuilder-time-stamp: 1729144700
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -28,54 +28,86 @@
 dpkg-source: info: applying spelling.patch
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/45492/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/9967/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 Oct 17 05:58 /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/9967/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/9967/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]="32" [3]="1" [4]="release" [5]="i686-pc-linux-gnu")
+  BASH_VERSION='5.2.32(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='977a5260de674837a9425341a5064f9e'
-  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='45492'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=e67ddf100c5f42358f39d2241eee1afb
+  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=9967
   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.ruiHJnHi/pbuilderrc_d0xY --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.ruiHJnHi/b1 --logfile b1/build.log libmock-quick-perl_1.111-2.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://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.ruiHJnHi/pbuilderrc_97xd --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.ruiHJnHi/b2 --logfile b2/build.log libmock-quick-perl_1.111-2.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://46.16.76.132:3128
 I: uname -a
-  Linux ionos6-i386 6.1.0-26-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.112-1 (2024-09-30) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-26-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.112-1 (2024-09-30) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Aug  4  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/45492/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Aug  4 21:30 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/9967/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -158,7 +190,7 @@
 Get: 35 http://deb.debian.org/debian unstable/main i386 libpath-class-perl all 0.37-4 [42.7 kB]
 Get: 36 http://deb.debian.org/debian unstable/main i386 libsub-uplevel-perl all 0.2800-3 [14.0 kB]
 Get: 37 http://deb.debian.org/debian unstable/main i386 libtest-exception-perl all 0.43-3 [16.9 kB]
-Fetched 20.5 MB in 0s (87.3 MB/s)
+Fetched 20.5 MB in 1s (14.2 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package sensible-utils.
 (Reading database ... 
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(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19931 files and directories currently installed.)
@@ -328,7 +360,11 @@
 fakeroot is already the newest version (1.36-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/libmock-quick-perl-1.111/ && 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  > ../libmock-quick-perl_1.111-2_source.changes
+I: user script /srv/workspace/pbuilder/9967/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/9967/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libmock-quick-perl-1.111/ && 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  > ../libmock-quick-perl_1.111-2_source.changes
 dpkg-buildpackage: info: source package libmock-quick-perl
 dpkg-buildpackage: info: source version 1.111-2
 dpkg-buildpackage: info: source distribution unstable
@@ -489,23 +525,23 @@
 ok 1 - require Mock::Quick::Util;
 ok 2 - Import
 ok 3 - main->can(...)
-ok 4 - Object form
-ok 5 - Class Form
-ok 6 - main->can('blah')
-ok 7 - injected sub
-ok 8 - main->can('foo')
-ok 9 - Class form dies
-ok 10 - Object form works
-ok 11 - Not set
-ok 12 - Alter
-ok 13 - Altered
-ok 14 - Cleared
-ok 15 - Not set
-ok 16 - Called method
-ok 17 - Cleared
-ok 18 - Not set
-ok 19 - Class version
-ok 20 - Object version
+ok 4 - Class version
+ok 5 - Object version
+ok 6 - Not set
+ok 7 - Alter
+ok 8 - Altered
+ok 9 - Cleared
+ok 10 - Not set
+ok 11 - Called method
+ok 12 - Cleared
+ok 13 - Not set
+ok 14 - main->can('foo')
+ok 15 - Class form dies
+ok 16 - Object form works
+ok 17 - Object form
+ok 18 - Class Form
+ok 19 - main->can('blah')
+ok 20 - injected sub
 ok 21 - class_meth purged
 ok 22 - obj_meth purged
 ok 23 - alt_meth purged
@@ -559,7 +595,7 @@
 1..13
 ok
 All tests successful.
-Files=10, Tests=174,  1 wallclock secs ( 0.06 usr  0.02 sys +  0.70 cusr  0.10 csys =  0.88 CPU)
+Files=10, Tests=174,  2 wallclock secs ( 0.06 usr  0.02 sys +  1.38 cusr  0.18 csys =  1.64 CPU)
 Result: PASS
    create-stamp debian/debhelper-build-stamp
  fakeroot debian/rules binary
@@ -571,18 +607,18 @@
 Building Mock-Quick
 Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/perl5/Object/Quick.pm
 Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/perl5/Mock/Quick.pm
-Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/perl5/Mock/Quick/Util.pm
-Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/perl5/Mock/Quick/Object.pm
-Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/perl5/Mock/Quick/Class.pm
 Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/perl5/Mock/Quick/Method.pm
+Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/perl5/Mock/Quick/Class.pm
+Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/perl5/Mock/Quick/Object.pm
+Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/perl5/Mock/Quick/Util.pm
 Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/perl5/Mock/Quick/Object/Control.pm
 Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/man/man3/Mock::Quick.3pm
-Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/man/man3/Object::Quick.3pm
-Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/man/man3/Mock::Quick::Object::Control.3pm
 Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/man/man3/Mock::Quick::Class.3pm
-Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/man/man3/Mock::Quick::Method.3pm
-Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/man/man3/Mock::Quick::Util.3pm
 Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/man/man3/Mock::Quick::Object.3pm
+Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/man/man3/Mock::Quick::Util.3pm
+Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/man/man3/Object::Quick.3pm
+Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/man/man3/Mock::Quick::Method.3pm
+Installing /build/reproducible-path/libmock-quick-perl-1.111/debian/libmock-quick-perl/usr/share/man/man3/Mock::Quick::Object::Control.3pm
    dh_installdocs
    dh_installchangelogs
    dh_installman
@@ -604,12 +640,14 @@
 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/9967/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/9967/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/45492 and its subdirectories
-I: Current time: Wed Nov 19 00:21:15 -12 2025
-I: pbuilder-time-stamp: 1763554875
+I: removing directory /srv/workspace/pbuilder/9967 and its subdirectories
+I: Current time: Thu Oct 17 19:59:02 +14 2024
+I: pbuilder-time-stamp: 1729144742