Diff of the two buildlogs:

--
--- b1/build.log	2024-01-06 13:19:33.747526635 +0000
+++ b2/build.log	2024-01-06 13:20:22.713458324 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Fri Feb  7 07:41:55 -12 2025
-I: pbuilder-time-stamp: 1738957315
+I: Current time: Sun Jan  7 03:19:36 +14 2024
+I: pbuilder-time-stamp: 1704547176
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/bookworm-reproducible-base.tgz]
 I: copying local configuration
@@ -28,49 +28,81 @@
  xserver-xorg-input-mutouch-1.3.0/autogen.sh
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3772533/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/2839565/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink04-arm64.
+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  6 13:19 /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/2839565/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/2839565/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='arm64'
-  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]="15" [3]="1" [4]="release" [5]="aarch64-unknown-linux-gnu")
+  BASH_VERSION='5.2.15(1)-release'
+  BUILDDIR=/build/reproducible-path
+  BUILDUSERGECOS='second user,second room,second work-phone,second home-phone,second other'
+  BUILDUSERNAME=pbuilder2
+  BUILD_ARCH=arm64
+  DEBIAN_FRONTEND=noninteractive
   DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=12 '
-  DISTRIBUTION='bookworm'
-  HOME='/root'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=bookworm
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  INVOCATION_ID='9fbec526b9244a4fb32b228142ec1b88'
-  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='3772533'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=cc8cdac05dc243129b376961581324af
+  LANG=C
+  LANGUAGE=nl_BE:nl
+  LC_ALL=C
+  MACHTYPE=aarch64-unknown-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=2839565
   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.FBM6wtLP/pbuilderrc_hybl --distribution bookworm --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.FBM6wtLP/b1 --logfile b1/build.log xserver-xorg-input-mutouch_1.3.0-3.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'
-  http_proxy='http://192.168.101.104:3128'
+  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.FBM6wtLP/pbuilderrc_Y6MO --distribution bookworm --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.FBM6wtLP/b2 --logfile b2/build.log xserver-xorg-input-mutouch_1.3.0-3.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'
+  http_proxy=http://192.168.101.104:3128
 I: uname -a
-  Linux codethink01-arm64 6.1.0-17-cloud-arm64 #1 SMP Debian 6.1.69-1 (2023-12-30) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-17-cloud-arm64 #1 SMP Debian 6.1.69-1 (2023-12-30) aarch64 GNU/Linux
 I: ls -l /bin
   total 7104
   -rwxr-xr-x 1 root root 1346480 Apr 23  2023 bash
@@ -128,15 +160,15 @@
   -rwxr-xr-x 1 root root   68456 Sep 20  2022 readlink
   -rwxr-xr-x 1 root root   68592 Sep 20  2022 rm
   -rwxr-xr-x 1 root root   68480 Sep 20  2022 rmdir
-  -rwxr-xr-x 1 root root   68392 Jul 28  2023 run-parts
+  -rwxr-xr-x 1 root root   68392 Jul 28 23:46 run-parts
   -rwxr-xr-x 1 root root  134536 Jan  5  2023 sed
-  lrwxrwxrwx 1 root root       4 Jan  5  2023 sh -> dash
+  lrwxrwxrwx 1 root root       9 Jan  6 13:19 sh -> /bin/bash
   -rwxr-xr-x 1 root root   68432 Sep 20  2022 sleep
   -rwxr-xr-x 1 root root  134088 Sep 20  2022 stty
   -rwsr-xr-x 1 root root  133312 Mar 23  2023 su
   -rwxr-xr-x 1 root root   68448 Sep 20  2022 sync
   -rwxr-xr-x 1 root root  539896 Apr  6  2023 tar
-  -rwxr-xr-x 1 root root   67904 Jul 28  2023 tempfile
+  -rwxr-xr-x 1 root root   67904 Jul 28 23:46 tempfile
   -rwxr-xr-x 1 root root  134160 Sep 20  2022 touch
   -rwxr-xr-x 1 root root   68384 Sep 20  2022 true
   -rwxr-xr-x 1 root root   67664 Mar 23  2023 ulockmgr_server
@@ -156,7 +188,7 @@
   -rwxr-xr-x 1 root root    2206 Apr 10  2022 zless
   -rwxr-xr-x 1 root root    1842 Apr 10  2022 zmore
   -rwxr-xr-x 1 root root    4577 Apr 10  2022 znew
-I: user script /srv/workspace/pbuilder/3772533/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/2839565/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -314,7 +346,7 @@
 Get: 108 http://deb.debian.org/debian bookworm/main arm64 quilt all 0.67+really0.66-1 [303 kB]
 Get: 109 http://deb.debian.org/debian bookworm/main arm64 xserver-xorg-dev arm64 2:21.1.7-3+deb12u2 [2553 kB]
 Get: 110 http://deb.debian.org/debian bookworm/main arm64 xutils-dev arm64 1:7.7+6 [242 kB]
-Fetched 66.8 MB in 1s (61.1 MB/s)
+Fetched 66.8 MB in 1s (124 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%
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(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 18171 files and directories currently installed.)
@@ -774,7 +806,11 @@
 fakeroot is already the newest version (1.31-1.2).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/xserver-xorg-input-mutouch-1.3.0/ && 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  > ../xserver-xorg-input-mutouch_1.3.0-3_source.changes
+I: user script /srv/workspace/pbuilder/2839565/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for bookworm
+I: user script /srv/workspace/pbuilder/2839565/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/xserver-xorg-input-mutouch-1.3.0/ && 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  > ../xserver-xorg-input-mutouch_1.3.0-3_source.changes
 dpkg-buildpackage: info: source package xserver-xorg-input-mutouch
 dpkg-buildpackage: info: source version 1:1.3.0-3
 dpkg-buildpackage: info: source distribution unstable
@@ -932,7 +968,7 @@
 make[2]: Entering directory '/build/reproducible-path/xserver-xorg-input-mutouch-1.3.0/build'
 Making all in src
 make[3]: Entering directory '/build/reproducible-path/xserver-xorg-input-mutouch-1.3.0/build/src'
-/bin/bash ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../src -I..    -I/usr/include/xorg -fvisibility=hidden -I/usr/include/pixman-1 -I/usr/include/X11/dri -I/usr/include/libdrm  -g -O2 -c -o xf86MuTouch.lo ../../src/xf86MuTouch.c
+/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../src -I..    -I/usr/include/xorg -fvisibility=hidden -I/usr/include/pixman-1 -I/usr/include/X11/dri -I/usr/include/libdrm  -g -O2 -c -o xf86MuTouch.lo ../../src/xf86MuTouch.c
 libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../src -I.. -I/usr/include/xorg -fvisibility=hidden -I/usr/include/pixman-1 -I/usr/include/X11/dri -I/usr/include/libdrm -g -O2 -c ../../src/xf86MuTouch.c  -fPIC -DPIC -o .libs/xf86MuTouch.o
 ../../src/xf86MuTouch.c: In function 'xf86MuTReadInput':
 ../../src/xf86MuTouch.c:270:5: warning: implicit declaration of function 'Error'; did you mean 'ErrorF'? [-Wimplicit-function-declaration]
@@ -959,7 +995,7 @@
  1242 |     default_options,
       |     ^~~~~~~~~~~~~~~
 ../../src/xf86MuTouch.c:1242:5: note: (near initialization for 'MUTOUCH.default_options')
-/bin/bash ../libtool  --tag=CC   --mode=link gcc -I/usr/include/xorg -fvisibility=hidden -I/usr/include/pixman-1 -I/usr/include/X11/dri -I/usr/include/libdrm  -g -O2 -module -avoid-version  -o mutouch_drv.la -rpath /usr/lib/xorg/modules/input xf86MuTouch.lo  
+/bin/sh ../libtool  --tag=CC   --mode=link gcc -I/usr/include/xorg -fvisibility=hidden -I/usr/include/pixman-1 -I/usr/include/X11/dri -I/usr/include/libdrm  -g -O2 -module -avoid-version  -o mutouch_drv.la -rpath /usr/lib/xorg/modules/input xf86MuTouch.lo  
 libtool: link: gcc -shared  -fPIC -DPIC  .libs/xf86MuTouch.o    -g -O2   -Wl,-soname -Wl,mutouch_drv.so -o .libs/mutouch_drv.so
 libtool: link: ( cd ".libs" && rm -f "mutouch_drv.la" && ln -s "../mutouch_drv.la" "mutouch_drv.la" )
 make[3]: Leaving directory '/build/reproducible-path/xserver-xorg-input-mutouch-1.3.0/build/src'
@@ -1002,7 +1038,7 @@
 make[4]: Entering directory '/build/reproducible-path/xserver-xorg-input-mutouch-1.3.0/build/src'
 make[4]: Nothing to be done for 'install-exec-am'.
  /bin/mkdir -p '/build/reproducible-path/xserver-xorg-input-mutouch-1.3.0/debian/tmp/usr/lib/xorg/modules/input'
- /bin/bash ../libtool   --mode=install /usr/bin/install -c   mutouch_drv.la '/build/reproducible-path/xserver-xorg-input-mutouch-1.3.0/debian/tmp/usr/lib/xorg/modules/input'
+ /bin/sh ../libtool   --mode=install /usr/bin/install -c   mutouch_drv.la '/build/reproducible-path/xserver-xorg-input-mutouch-1.3.0/debian/tmp/usr/lib/xorg/modules/input'
 libtool: install: /usr/bin/install -c .libs/mutouch_drv.so /build/reproducible-path/xserver-xorg-input-mutouch-1.3.0/debian/tmp/usr/lib/xorg/modules/input/mutouch_drv.so
 libtool: install: /usr/bin/install -c .libs/mutouch_drv.lai /build/reproducible-path/xserver-xorg-input-mutouch-1.3.0/debian/tmp/usr/lib/xorg/modules/input/mutouch_drv.la
 libtool: warning: remember to run 'libtool --finish /usr/lib/xorg/modules/input'
@@ -1064,8 +1100,8 @@
    dh_gencontrol -O--builddirectory=build/
    dh_md5sums -O--builddirectory=build/
    dh_builddeb -O--builddirectory=build/
-dpkg-deb: building package 'xserver-xorg-input-mutouch' in '../xserver-xorg-input-mutouch_1.3.0-3_arm64.deb'.
 dpkg-deb: building package 'xserver-xorg-input-mutouch-dbgsym' in '../xserver-xorg-input-mutouch-dbgsym_1.3.0-3_arm64.deb'.
+dpkg-deb: building package 'xserver-xorg-input-mutouch' in '../xserver-xorg-input-mutouch_1.3.0-3_arm64.deb'.
  dpkg-genbuildinfo --build=binary -O../xserver-xorg-input-mutouch_1.3.0-3_arm64.buildinfo
  dpkg-genchanges --build=binary -O../xserver-xorg-input-mutouch_1.3.0-3_arm64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -1073,12 +1109,14 @@
 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/2839565/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/2839565/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/3772533 and its subdirectories
-I: Current time: Fri Feb  7 07:42:32 -12 2025
-I: pbuilder-time-stamp: 1738957352
+I: removing directory /srv/workspace/pbuilder/2839565 and its subdirectories
+I: Current time: Sun Jan  7 03:20:21 +14 2024
+I: pbuilder-time-stamp: 1704547221