Diff of the two buildlogs:

--
--- b1/build.log	2024-12-02 14:38:22.661750248 +0000
+++ b2/build.log	2024-12-02 14:39:04.311861330 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Dec  2 02:37:48 -12 2024
-I: pbuilder-time-stamp: 1733150268
+I: Current time: Mon Jan  5 11:01:24 +14 2026
+I: pbuilder-time-stamp: 1767560484
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -28,53 +28,85 @@
 dpkg-source: info: applying 0001-remove-badge.diff
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/14247/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/6695/tmp/hooks/D01_modify_environment starting
+debug: Running on infom08-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 Jan  4 21:01 /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/6695/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/6695/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=6 '
-  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=5 '
+  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='e99d8fea5fa04da1a83e4ab1f5922c1e'
-  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='14247'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=9da2b2134b5d427ba5e28aab8618f16a
+  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=6695
   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.cYO2oTzk/pbuilderrc_apMR --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.cYO2oTzk/b1 --logfile b1/build.log m-buffer-el_0.15-3.dsc'
-  SUDO_GID='111'
-  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.cYO2oTzk/pbuilderrc_WGcc --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.cYO2oTzk/b2 --logfile b2/build.log m-buffer-el_0.15-3.dsc'
+  SUDO_GID=111
+  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 infom07-i386 6.1.0-28-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.11.5+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.11.5-1~bpo12+1 (2024-11-11) 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/14247/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/6695/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -206,7 +238,7 @@
 Get: 90 http://deb.debian.org/debian unstable/main i386 dh-elpa all 2.1.5 [29.7 kB]
 Get: 91 http://deb.debian.org/debian unstable/main i386 dh-elpa-helper all 2.1.5 [8320 B]
 Get: 92 http://deb.debian.org/debian unstable/main i386 elpa-seq all 2.24-2 [11.9 kB]
-Fetched 77.3 MB in 2s (34.6 MB/s)
+Fetched 77.3 MB in 1s (56.8 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package install-info.
 (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 ... 19956 files and directories currently installed.)
@@ -609,7 +641,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/m-buffer-el-0.15/ && 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  > ../m-buffer-el_0.15-3_source.changes
+I: user script /srv/workspace/pbuilder/6695/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/6695/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/m-buffer-el-0.15/ && 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  > ../m-buffer-el_0.15-3_source.changes
 dpkg-buildpackage: info: source package m-buffer-el
 dpkg-buildpackage: info: source version 0.15-3
 dpkg-buildpackage: info: source distribution unstable
@@ -619,7 +655,7 @@
  debian/rules clean
 dh clean --with elpa
    dh_auto_clean
-	make -j6 clean
+	make -j5 clean
 make[1]: Entering directory '/build/reproducible-path/m-buffer-el-0.15'
 find . -name "m-buffer*org" -not -name "m-buffer-doc.org" \
    -exec rm {} \;
@@ -638,44 +674,44 @@
 skipping upstream build
 make[1]: Leaving directory '/build/reproducible-path/m-buffer-el-0.15'
    dh_elpa_test
-	emacs -batch -Q -l package --eval "(add-to-list 'package-directory-list \"/usr/share/emacs/site-lisp/elpa\")" --eval "(add-to-list 'package-directory-list \"/usr/share/emacs/site-lisp/elpa-src\")" --eval "(setq ert-batch-backtrace-right-margin nil)" -f package-initialize -L . -L test -l test/m-buffer-at-test.el -l test/m-buffer-test.el --eval \(ert-run-tests-batch-and-exit\)
-Running 34 tests (2024-12-02 14:38:18+0000, selector `t')
-   passed   1/34  apply-functions (0.000361 sec)
-   passed   2/34  buffer-for-match (0.000093 sec)
-   passed   3/34  case-fold-search (0.000762 sec)
-   passed   4/34  exact-subtract (0.000466 sec)
-   passed   5/34  exact-subtract-error (0.000065 sec)
-   passed   6/34  exact-subtract-error-simplified (0.000061 sec)
-   passed   7/34  exact-subtract-with-nil (0.000035 sec)
-   passed   8/34  first-line (0.000293 sec)
-   passed   9/34  line-end (0.000255 sec)
-   passed  10/34  line-start (0.000257 sec)
-   passed  11/34  m-buffer-at-eolp-1 (0.000055 sec)
-   passed  12/34  m-buffer-at-eolp-2 (0.000043 sec)
-   passed  13/34  m-buffer-at-eolp-3 (0.000040 sec)
-   passed  14/34  m-buffer-at-eolp-4 (0.000041 sec)
-   passed  15/34  m-buffer-loaded (0.000033 sec)
-   passed  16/34  m-buffer-match-begin (0.000214 sec)
-   passed  17/34  m-buffer-match-begin-pos (0.000237 sec)
-   passed  18/34  m-buffer-matches (0.000361 sec)
-   passed  19/34  m-buffer-nil-marker (0.000399 sec)
-   passed  20/34  m-buffer-string (0.000053 sec)
-   passed  21/34  m-with-temp-buffer-of-file (0.000184 sec)
-   passed  22/34  marker-to-pos (0.000060 sec)
-   passed  23/34  match-error (0.000072 sec)
-   passed  24/34  match-n (0.000735 sec)
-   passed  25/34  multi-match (0.000479 sec)
-   passed  26/34  normalize-args (0.000153 sec)
-   passed  27/34  page-matches (0.000214 sec)
-   passed  28/34  paragraph-separate (0.000104 sec)
-   passed  29/34  partition-by-markers (0.000110 sec)
-   passed  30/34  point-stationionary-with-current (0.000232 sec)
-   passed  31/34  replace-matches (0.000494 sec)
-   passed  32/34  replace-point-unmoved (0.000413 sec)
-   passed  33/34  sentence-end (0.000287 sec)
-   passed  34/34  subtract (0.000370 sec)
+	emacs -batch -Q -l package --eval "(add-to-list 'package-directory-list \"/usr/share/emacs/site-lisp/elpa\")" --eval "(add-to-list 'package-directory-list \"/usr/share/emacs/site-lisp/elpa-src\")" --eval "(setq ert-batch-backtrace-right-margin nil)" -f package-initialize -L . -L test -l test/m-buffer-test.el -l test/m-buffer-at-test.el --eval \(ert-run-tests-batch-and-exit\)
+Running 34 tests (2026-01-04 21:01:58+0000, selector `t')
+   passed   1/34  apply-functions (0.000311 sec)
+   passed   2/34  buffer-for-match (0.000060 sec)
+   passed   3/34  case-fold-search (0.000461 sec)
+   passed   4/34  exact-subtract (0.000295 sec)
+   passed   5/34  exact-subtract-error (0.000040 sec)
+   passed   6/34  exact-subtract-error-simplified (0.000056 sec)
+   passed   7/34  exact-subtract-with-nil (0.000023 sec)
+   passed   8/34  first-line (0.000209 sec)
+   passed   9/34  line-end (0.000176 sec)
+   passed  10/34  line-start (0.000172 sec)
+   passed  11/34  m-buffer-at-eolp-1 (0.000034 sec)
+   passed  12/34  m-buffer-at-eolp-2 (0.000026 sec)
+   passed  13/34  m-buffer-at-eolp-3 (0.000024 sec)
+   passed  14/34  m-buffer-at-eolp-4 (0.000023 sec)
+   passed  15/34  m-buffer-loaded (0.000023 sec)
+   passed  16/34  m-buffer-match-begin (0.000146 sec)
+   passed  17/34  m-buffer-match-begin-pos (0.000230 sec)
+   passed  18/34  m-buffer-matches (0.000266 sec)
+   passed  19/34  m-buffer-nil-marker (0.000261 sec)
+   passed  20/34  m-buffer-string (0.000039 sec)
+   passed  21/34  m-with-temp-buffer-of-file (0.000116 sec)
+   passed  22/34  marker-to-pos (0.000045 sec)
+   passed  23/34  match-error (0.000057 sec)
+   passed  24/34  match-n (0.000518 sec)
+   passed  25/34  multi-match (0.000352 sec)
+   passed  26/34  normalize-args (0.000119 sec)
+   passed  27/34  page-matches (0.000159 sec)
+   passed  28/34  paragraph-separate (0.000071 sec)
+   passed  29/34  partition-by-markers (0.000114 sec)
+   passed  30/34  point-stationionary-with-current (0.000161 sec)
+   passed  31/34  replace-matches (0.000368 sec)
+   passed  32/34  replace-point-unmoved (0.000244 sec)
+   passed  33/34  sentence-end (0.000219 sec)
+   passed  34/34  subtract (0.000289 sec)
 
-Ran 34 tests, 34 results as expected, 0 unexpected (2024-12-02 14:38:18+0000, 0.009851 sec)
+Ran 34 tests, 34 results as expected, 0 unexpected (2026-01-04 21:01:58+0000, 0.007234 sec)
 
    create-stamp debian/debhelper-build-stamp
    dh_prep
@@ -705,12 +741,14 @@
 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/6695/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/6695/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/14247 and its subdirectories
-I: Current time: Mon Dec  2 02:38:21 -12 2024
-I: pbuilder-time-stamp: 1733150301
+I: removing directory /srv/workspace/pbuilder/6695 and its subdirectories
+I: Current time: Mon Jan  5 11:02:01 +14 2026
+I: pbuilder-time-stamp: 1767560521