Diff of the two buildlogs:

--
--- b1/build.log	2025-03-18 23:47:58.778056660 +0000
+++ b2/build.log	2025-03-18 23:50:16.031829220 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Apr 20 18:09:53 -12 2026
-I: pbuilder-time-stamp: 1776751793
+I: Current time: Wed Mar 19 13:48:01 +14 2025
+I: pbuilder-time-stamp: 1742341681
 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 x32
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/108141/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/11589/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos12-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 Mar 18 23:48 /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/11589/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/11589/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]="37" [3]="1" [4]="release" [5]="i686-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=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='d9981c79e6a14ebd8161d3c5b087a1d2'
-  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='108141'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=89f8d8d7278143cd90a7ad5a4e261f13
+  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=11589
   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.Rjx7I6AO/pbuilderrc_1U3q --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.Rjx7I6AO/b1 --logfile b1/build.log libselinux_3.8.1-1.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.Rjx7I6AO/pbuilderrc_gJl8 --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.Rjx7I6AO/b2 --logfile b2/build.log libselinux_3.8.1-1.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 6.1.0-32-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.129-1 (2025-03-06) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-32-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.129-1 (2025-03-06) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/108141/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4 11:20 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/11589/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -300,7 +332,7 @@
 Get: 166 http://deb.debian.org/debian unstable/main i386 python3-wheel all 0.45.1-1 [56.7 kB]
 Get: 167 http://deb.debian.org/debian unstable/main i386 python3-pip all 25.0+dfsg-1 [1454 kB]
 Get: 168 http://deb.debian.org/debian unstable/main i386 swig i386 4.3.0-1 [1570 kB]
-Fetched 65.1 MB in 0s (134 MB/s)
+Fetched 65.1 MB in 2s (43.1 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-minimal:i386.
 (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 ... 19770 files and directories currently installed.)
@@ -850,8 +882,8 @@
 Setting up tzdata (2025a-2) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Tue Apr 21 06:10:15 UTC 2026.
-Universal Time is now:  Tue Apr 21 06:10:15 UTC 2026.
+Local time is now:      Tue Mar 18 23:48:38 UTC 2025.
+Universal Time is now:  Tue Mar 18 23:48:38 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up ruby-minitest (5.25.4-2) ...
@@ -1007,7 +1039,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/libselinux-3.8.1/ && 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  > ../libselinux_3.8.1-1_source.changes
+I: user script /srv/workspace/pbuilder/11589/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/11589/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libselinux-3.8.1/ && 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  > ../libselinux_3.8.1-1_source.changes
 dpkg-buildpackage: info: source package libselinux
 dpkg-buildpackage: info: source version 3.8.1-1
 dpkg-buildpackage: info: source distribution unstable
@@ -1366,7 +1402,7 @@
 CFLAGS="-Wdate-time -D_FORTIFY_SOURCE=2 -D_LARGEFILE64_SOURCE -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/libselinux-3.8.1=. -fstack-protector-strong -Wformat -Werror=format-security -fno-semantic-interposition -Wdate-time -D_FORTIFY_SOURCE=2 -D_LARGEFILE64_SOURCE -Wall -Wextra -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I../include -D_GNU_SOURCE -DNO_ANDROID_BACKEND -DUSE_PCRE2 -DPCRE2_CODE_UNIT_WIDTH=8 -DHAVE_STRLCPY -DHAVE_REALLOCARRAY -Wno-error -Wno-unused-variable -Wno-unused-but-set-variable -Wno-unused-parameter -Wno-shadow -Wno-uninitialized -Wno-missing-prototypes -Wno-missing-declarations -Wno-deprecated-declarations" python3.13 setup.py build_ext
 running build_ext
 CFLAGS="-Wdate-time -D_FORTIFY_SOURCE=2 -D_LARGEFILE64_SOURCE -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/libselinux-3.8.1=. -fstack-protector-strong -Wformat -Werror=format-security -fno-semantic-interposition -Wdate-time -D_FORTIFY_SOURCE=2 -D_LARGEFILE64_SOURCE -Wall -Wextra -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I../include -D_GNU_SOURCE -DNO_ANDROID_BACKEND -DUSE_PCRE2 -DPCRE2_CODE_UNIT_WIDTH=8 -DHAVE_STRLCPY -DHAVE_REALLOCARRAY -Wno-error -Wno-unused-variable -Wno-unused-but-set-variable -Wno-unused-parameter -Wno-shadow -Wno-uninitialized -Wno-missing-prototypes -Wno-missing-declarations -Wno-deprecated-declarations" python3.13 -m pip install --prefix=/usr `test -n "/build/reproducible-path/libselinux-3.8.1/debian/tmp" && echo --root /build/reproducible-path/libselinux-3.8.1/debian/tmp --ignore-installed --no-deps`  .
-WARNING: The directory '/nonexistent/first-build/.cache/pip' or its parent directory is not owned or is not writable by the current user. The cache has been disabled. Check the permissions and owner of that directory. If executing pip with sudo, you should use sudo's -H flag.
+WARNING: The directory '/nonexistent/second-build/.cache/pip' or its parent directory is not owned or is not writable by the current user. The cache has been disabled. Check the permissions and owner of that directory. If executing pip with sudo, you should use sudo's -H flag.
 Processing /build/reproducible-path/libselinux-3.8.1/src
   Preparing metadata (setup.py): started
   Preparing metadata (setup.py): finished with status 'done'
@@ -1374,7 +1410,7 @@
   Building wheel for selinux (setup.py): started
   Building wheel for selinux (setup.py): finished with status 'done'
   Created wheel for selinux: filename=selinux-3.8.1-cp313-cp313-linux_i686.whl size=440981 sha256=3a879c37961e5a0f8209f0743e50ab47b0e0dfa48a8c0325359bbcc73902cb14
-  Stored in directory: /tmp/pip-ephem-wheel-cache-f6p2yj6z/wheels/e3/2b/24/e674f68bb5d1f9403f0ce2298c80420d0b6f9589ff2f6e6fad
+  Stored in directory: /tmp/pip-ephem-wheel-cache-twu_cpxh/wheels/e3/2b/24/e674f68bb5d1f9403f0ce2298c80420d0b6f9589ff2f6e6fad
 Successfully built selinux
 Installing collected packages: selinux
 Successfully installed selinux-3.8.1
@@ -1420,7 +1456,7 @@
 dpkg-gensymbols: warning: some new symbols appeared in the symbols file: see diff output below
 dpkg-gensymbols: warning: debian/libselinux1/DEBIAN/symbols doesn't match completely debian/libselinux1.symbols
 --- debian/libselinux1.symbols (libselinux1_3.8.1-1_i386)
-+++ dpkg-gensymbolsdghIfh	2026-04-20 18:10:53.673475415 -1200
++++ dpkg-gensymbolsVRylwh	2025-03-19 13:50:03.704194016 +1400
 @@ -88,6 +88,7 @@
   matchmediacon@LIBSELINUX_1.0 3.1~
   matchpathcon@LIBSELINUX_1.0 3.1~
@@ -1435,32 +1471,32 @@
 dpkg-shlibdeps: warning: diversions involved - output may be incorrect
  diversion by libc6 from: /lib/ld-linux.so.2
 dpkg-shlibdeps: warning: diversions involved - output may be incorrect
+ diversion by libc6 to: /lib/ld-linux.so.2.usr-is-merged
 dpkg-shlibdeps: warning: diversions involved - output may be incorrect
  diversion by libc6 from: /lib/ld-linux.so.2
 dpkg-shlibdeps: warning: diversions involved - output may be incorrect
  diversion by libc6 to: /lib/ld-linux.so.2.usr-is-merged
- diversion by libc6 to: /lib/ld-linux.so.2.usr-is-merged
    dh_ruby_fixdepends
    dh_installdeb
    debian/rules override_dh_gencontrol
 make[1]: Entering directory '/build/reproducible-path/libselinux-3.8.1'
 dh_gencontrol -- -VBuilt-Using="libsepol (= 3.8.1-1), "
-dpkg-gencontrol: warning: Depends field of package ruby-selinux: substitution variable ${ruby:Depends} used, but is not defined
 dpkg-gencontrol: warning: Provides field of package python3-selinux: substitution variable ${python3:Provides} used, but is not defined
 dpkg-gencontrol: warning: Depends field of package ruby-selinux: substitution variable ${ruby:Depends} used, but is not defined
 dpkg-gencontrol: warning: Provides field of package python3-selinux: substitution variable ${python3:Provides} used, but is not defined
+dpkg-gencontrol: warning: Depends field of package ruby-selinux: substitution variable ${ruby:Depends} used, but is not defined
 make[1]: Leaving directory '/build/reproducible-path/libselinux-3.8.1'
    dh_md5sums
    dh_builddeb
-dpkg-deb: building package 'selinux-utils' in '../selinux-utils_3.8.1-1_i386.deb'.
-dpkg-deb: building package 'selinux-utils-dbgsym' in '../selinux-utils-dbgsym_3.8.1-1_i386.deb'.
 dpkg-deb: building package 'libselinux1' in '../libselinux1_3.8.1-1_i386.deb'.
+dpkg-deb: building package 'selinux-utils' in '../selinux-utils_3.8.1-1_i386.deb'.
 dpkg-deb: building package 'libselinux1-dbgsym' in '../libselinux1-dbgsym_3.8.1-1_i386.deb'.
-dpkg-deb: building package 'libselinux1-dev' in '../libselinux1-dev_3.8.1-1_i386.deb'.
 dpkg-deb: building package 'ruby-selinux' in '../ruby-selinux_3.8.1-1_i386.deb'.
-dpkg-deb: building package 'ruby-selinux-dbgsym' in '../ruby-selinux-dbgsym_3.8.1-1_i386.deb'.
-dpkg-deb: building package 'python3-selinux' in '../python3-selinux_3.8.1-1_i386.deb'.
 dpkg-deb: building package 'python3-selinux-dbgsym' in '../python3-selinux-dbgsym_3.8.1-1_i386.deb'.
+dpkg-deb: building package 'selinux-utils-dbgsym' in '../selinux-utils-dbgsym_3.8.1-1_i386.deb'.
+dpkg-deb: building package 'libselinux1-dev' in '../libselinux1-dev_3.8.1-1_i386.deb'.
+dpkg-deb: building package 'python3-selinux' in '../python3-selinux_3.8.1-1_i386.deb'.
+dpkg-deb: building package 'ruby-selinux-dbgsym' in '../ruby-selinux-dbgsym_3.8.1-1_i386.deb'.
 dpkg-deb: building package 'libselinux1-udeb' in 'debian/.debhelper/scratch-space/build-libselinux1-udeb/libselinux1-udeb_3.8.1-1_i386.deb'.
 	Renaming libselinux1-udeb_3.8.1-1_i386.deb to libselinux1-udeb_3.8.1-1_i386.udeb
  dpkg-genbuildinfo --build=binary -O../libselinux_3.8.1-1_i386.buildinfo
@@ -1470,12 +1506,14 @@
 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/11589/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/11589/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/108141 and its subdirectories
-I: Current time: Mon Apr 20 18:10:57 -12 2026
-I: pbuilder-time-stamp: 1776751857
+I: removing directory /srv/workspace/pbuilder/11589 and its subdirectories
+I: Current time: Wed Mar 19 13:50:15 +14 2025
+I: pbuilder-time-stamp: 1742341815