Diff of the two buildlogs:

--
--- b1/build.log	2024-12-25 09:06:17.117639501 +0000
+++ b2/build.log	2024-12-25 09:08:11.088456064 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Tue Dec 24 21:05:22 -12 2024
-I: pbuilder-time-stamp: 1735117522
+I: Current time: Wed Jan 28 05:29:20 +14 2026
+I: pbuilder-time-stamp: 1769527760
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -25,51 +25,83 @@
 dpkg-source: info: applying 0002-Default-to-UTF8-encoding-for-consistent-ordering.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/1205026/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/3957371/tmp/hooks/D01_modify_environment starting
+debug: Running on infom02-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 Jan 27 15:29 /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/3957371/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/3957371/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='unstable'
-  HOME='/root'
-  HOST_ARCH='amd64'
+  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='1dcdbaec136f4f2ebdca65faa015b81d'
-  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='1205026'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=7f5f75ffade24a41860b802357876206
+  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=3957371
   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.ps3LLl9j/pbuilderrc_LfL6 --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.ps3LLl9j/b1 --logfile b1/build.log etckeeper_1.18.22-1.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.ps3LLl9j/pbuilderrc_vHX8 --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.ps3LLl9j/b2 --logfile b2/build.log etckeeper_1.18.22-1.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 infom01-amd64 6.1.0-28-cloud-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.11.10+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.11.10-1~bpo12+1 (2024-12-19) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/1205026/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/3957371/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -213,7 +245,7 @@
 Get: 95 http://deb.debian.org/debian unstable/main amd64 liberror-perl all 0.17029-2 [29.0 kB]
 Get: 96 http://deb.debian.org/debian unstable/main amd64 git-man all 1:2.45.2-1.3 [2159 kB]
 Get: 97 http://deb.debian.org/debian unstable/main amd64 git amd64 1:2.45.2-1.3 [8666 kB]
-Fetched 49.2 MB in 3s (14.7 MB/s)
+Fetched 49.2 MB in 1s (50.5 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.12-minimal: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 ... 19857 files and directories currently installed.)
@@ -542,8 +574,8 @@
 Setting up tzdata (2024b-4) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Wed Dec 25 09:06:02 UTC 2024.
-Universal Time is now:  Wed Dec 25 09:06:02 UTC 2024.
+Local time is now:      Tue Jan 27 15:30:28 UTC 2026.
+Universal Time is now:  Tue Jan 27 15:30:28 UTC 2026.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up liberror-perl (0.17029-2) ...
@@ -631,7 +663,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/etckeeper-1.18.22/ && 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  > ../etckeeper_1.18.22-1_source.changes
+I: user script /srv/workspace/pbuilder/3957371/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/3957371/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/etckeeper-1.18.22/ && 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  > ../etckeeper_1.18.22-1_source.changes
 dpkg-buildpackage: info: source package etckeeper
 dpkg-buildpackage: info: source version 1.18.22-1
 dpkg-buildpackage: info: source distribution unstable
@@ -645,8 +681,8 @@
 make[1]: Entering directory '/build/reproducible-path/etckeeper-1.18.22'
 sed -i~ "s/Version:.*/Version: $(perl -e '$_=<>;m/\((.*?)(-.*)?\)/;print $1;'<CHANGELOG)/" etckeeper.spec
 sed -i~ "s/Version:.*/Version: $(perl -e '$_=<>;m/\((.*?)(-.*)?\)/;print $1;' <CHANGELOG)\"/" etckeeper
-rm -f etckeeper~
 rm -f etckeeper.spec~
+rm -f etckeeper~
 rm -rf build
 make[1]: Leaving directory '/build/reproducible-path/etckeeper-1.18.22'
    dh_clean
@@ -660,21 +696,21 @@
 make[1]: Entering directory '/build/reproducible-path/etckeeper-1.18.22'
 sed -i~ "s/Version:.*/Version: $(perl -e '$_=<>;m/\((.*?)(-.*)?\)/;print $1;'<CHANGELOG)/" etckeeper.spec
 sed -i~ "s/Version:.*/Version: $(perl -e '$_=<>;m/\((.*?)(-.*)?\)/;print $1;' <CHANGELOG)\"/" etckeeper
-rm -f etckeeper~
 rm -f etckeeper.spec~
+rm -f etckeeper~
 python ./etckeeper-bzr/__init__.py build || echo "** bzr support not built"
-/bin/sh: 1: python: not found
+/bin/sh: line 1: python: command not found
 ** bzr support not built
 python3 ./etckeeper-brz/__init__.py build || echo "** brz support not built"
 python ./etckeeper-dnf/etckeeper.py build || echo "** DNF support not built"
-/bin/sh: 1: python: not found
+/bin/sh: line 1: python: command not found
 ** DNF support not built
 make[1]: Leaving directory '/build/reproducible-path/etckeeper-1.18.22'
    dh_auto_test
 	make -j12 test
 make[1]: Entering directory '/build/reproducible-path/etckeeper-1.18.22'
-mkdir /tmp/tmp.snq7XrfMlH
-testdir=/tmp/tmp.snq7XrfMlH fakeroot ./test-etckeeper
+mkdir /tmp/tmp.IK2cZFG9Ov
+testdir=/tmp/tmp.IK2cZFG9Ov fakeroot ./test-etckeeper
 1..11
 ok 1 test: etckeeper init
 ok 2 test: etckeeper commit
@@ -687,7 +723,7 @@
 ok 9 test: etckeeper commit file with space
 ok 10 test: etckeeper debug (git) # skip
 ok 11 test: etckeeper uninit -f
-rm -rf /tmp/tmp.snq7XrfMlH
+rm -rf /tmp/tmp.IK2cZFG9Ov
 make[1]: Leaving directory '/build/reproducible-path/etckeeper-1.18.22'
    create-stamp debian/debhelper-build-stamp
    dh_prep
@@ -728,7 +764,7 @@
 install --strip-program=true -m 0644 cruft_filter /build/reproducible-path/etckeeper-1.18.22/debian/etckeeper/etc/cruft/filters-unex/etckeeper
 install: WARNING: ignoring --strip-program option as -s option was not specified
 python ./etckeeper-bzr/__init__.py install --root=/build/reproducible-path/etckeeper-1.18.22/debian/etckeeper --install-layout=deb || echo "** bzr support not installed"
-/bin/sh: 1: python: not found
+/bin/sh: line 1: python: command not found
 ** bzr support not installed
 python3 ./etckeeper-brz/__init__.py install --root=/build/reproducible-path/etckeeper-1.18.22/debian/etckeeper --install-layout=deb || echo "** brz support not installed"
 /usr/lib/python3/dist-packages/setuptools/_distutils/cmd.py:66: SetuptoolsDeprecationWarning: setup.py install is deprecated.
@@ -781,12 +817,14 @@
 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/3957371/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/3957371/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/1205026 and its subdirectories
-I: Current time: Tue Dec 24 21:06:15 -12 2024
-I: pbuilder-time-stamp: 1735117575
+I: removing directory /srv/workspace/pbuilder/3957371 and its subdirectories
+I: Current time: Wed Jan 28 05:31:10 +14 2026
+I: pbuilder-time-stamp: 1769527870