Diff of the two buildlogs:

--
--- b1/build.log	2024-12-13 09:01:51.505465795 +0000
+++ b2/build.log	2024-12-13 09:02:28.155797014 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu Jan 15 03:24:10 -12 2026
-I: pbuilder-time-stamp: 1768490650
+I: Current time: Fri Dec 13 23:01:54 +14 2024
+I: pbuilder-time-stamp: 1734080514
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -28,51 +28,83 @@
 dpkg-source: info: applying tests-version-skew.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/2396312/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/97385/tmp/hooks/D01_modify_environment starting
+debug: Running on infom01-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 Dec 13 09:02 /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/97385/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/97385/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'
+  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=12 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='amd64'
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='dce31cb2e32b44e28f50966815d08c2c'
-  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='2396312'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=882bb94ae37b499a81dedae0ee6db052
+  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=97385
   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.DUjvA3XS/pbuilderrc_LBf2 --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.DUjvA3XS/b1 --logfile b1/build.log libcompress-raw-zlib-perl_2.213-1.dsc'
-  SUDO_GID='109'
-  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.DUjvA3XS/pbuilderrc_S16G --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.DUjvA3XS/b2 --logfile b2/build.log libcompress-raw-zlib-perl_2.213-1.dsc'
+  SUDO_GID=109
+  SUDO_UID=104
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
 I: uname -a
-  Linux infom02-amd64 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-cloud-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/2396312/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/97385/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -147,7 +179,7 @@
 Get: 30 http://deb.debian.org/debian trixie/main amd64 libperl-dev amd64 5.40.0-8 [1114 kB]
 Get: 31 http://deb.debian.org/debian trixie/main amd64 libtest-pod-perl all 1.52-3 [12.6 kB]
 Get: 32 http://deb.debian.org/debian trixie/main amd64 zlib1g-dev amd64 1:1.3.dfsg+really1.3.1-1+b1 [920 kB]
-Fetched 21.9 MB in 0s (85.2 MB/s)
+Fetched 21.9 MB in 0s (102 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package sensible-utils.
 (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
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(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 ... 19965 files and directories currently installed.)
@@ -290,7 +322,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/libcompress-raw-zlib-perl-2.213/ && 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  > ../libcompress-raw-zlib-perl_2.213-1_source.changes
+I: user script /srv/workspace/pbuilder/97385/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/97385/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libcompress-raw-zlib-perl-2.213/ && 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  > ../libcompress-raw-zlib-perl_2.213-1_source.changes
 dpkg-buildpackage: info: source package libcompress-raw-zlib-perl
 dpkg-buildpackage: info: source version 2.213-1
 dpkg-buildpackage: info: source distribution unstable
@@ -319,8 +355,8 @@
    dh_auto_build
 	make -j12
 make[1]: Entering directory '/build/reproducible-path/libcompress-raw-zlib-perl-2.213'
-Running Mkbootstrap for Zlib ()
 "/usr/bin/perl" "/usr/share/perl/5.40/ExtUtils/xsubpp"  -typemap '/usr/share/perl/5.40/ExtUtils/typemap' -typemap '/build/reproducible-path/libcompress-raw-zlib-perl-2.213/typemap'  Zlib.xs > Zlib.xsc
+Running Mkbootstrap for Zlib ()
 chmod 644 "Zlib.bs"
 "/usr/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- Zlib.bs blib/arch/auto/Compress/Raw/Zlib/Zlib.bs 644
 cp lib/Compress/Raw/Zlib.pm blib/lib/Compress/Raw/Zlib.pm
@@ -935,7 +971,7 @@
 t/meta-json.t ...... skipped: Test::CPAN::Meta::JSON required for testing META.json
 t/meta-yaml.t ...... skipped: Test::CPAN::Meta required for testing META.yml
 All tests successful.
-Files=10, Tests=520,  1 wallclock secs ( 0.05 usr  0.03 sys +  0.56 cusr  0.11 csys =  0.75 CPU)
+Files=10, Tests=520,  1 wallclock secs ( 0.04 usr  0.01 sys +  0.35 cusr  0.05 csys =  0.45 CPU)
 Result: PASS
 make[2]: Leaving directory '/build/reproducible-path/libcompress-raw-zlib-perl-2.213'
 make[1]: Leaving directory '/build/reproducible-path/libcompress-raw-zlib-perl-2.213'
@@ -978,8 +1014,8 @@
    dh_gencontrol
    dh_md5sums
    dh_builddeb
-dpkg-deb: building package 'libcompress-raw-zlib-perl' in '../libcompress-raw-zlib-perl_2.213-1_amd64.deb'.
 dpkg-deb: building package 'libcompress-raw-zlib-perl-dbgsym' in '../libcompress-raw-zlib-perl-dbgsym_2.213-1_amd64.deb'.
+dpkg-deb: building package 'libcompress-raw-zlib-perl' in '../libcompress-raw-zlib-perl_2.213-1_amd64.deb'.
  dpkg-genbuildinfo --build=binary -O../libcompress-raw-zlib-perl_2.213-1_amd64.buildinfo
  dpkg-genchanges --build=binary -O../libcompress-raw-zlib-perl_2.213-1_amd64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -987,12 +1023,14 @@
 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/97385/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/97385/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/2396312 and its subdirectories
-I: Current time: Thu Jan 15 03:24:50 -12 2026
-I: pbuilder-time-stamp: 1768490690
+I: removing directory /srv/workspace/pbuilder/97385 and its subdirectories
+I: Current time: Fri Dec 13 23:02:27 +14 2024
+I: pbuilder-time-stamp: 1734080547