Diff of the two buildlogs:

--
--- b1/build.log	2025-01-29 01:15:51.441188136 +0000
+++ b2/build.log	2025-01-29 01:28:13.735659843 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Tue Jan 28 13:05:15 -12 2025
-I: pbuilder-time-stamp: 1738112715
+I: Current time: Wed Jan 29 15:16:11 +14 2025
+I: pbuilder-time-stamp: 1738113371
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -25,52 +25,84 @@
 dpkg-source: info: applying terminal-drawing-order
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/20812/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/7598/tmp/hooks/D01_modify_environment starting
+debug: Running on ff4a.
+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 29 01:16 /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/7598/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/7598/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='armhf'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=3 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='armhf'
+  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]="arm-unknown-linux-gnueabihf")
+  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=armhf
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=4 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=arm
+  HOST_ARCH=armhf
   IFS=' 	
   '
-  INVOCATION_ID='729347323dda4d60973e8830f11a5697'
-  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='20812'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=2c327310522041f8affc7e22be2f17d5
+  LANG=C
+  LANGUAGE=it_CH:it
+  LC_ALL=C
+  MACHTYPE=arm-unknown-linux-gnueabihf
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnueabihf
+  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=7598
   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.ZJE8x1zX/pbuilderrc_WLzV --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.ZJE8x1zX/b1 --logfile b1/build.log gearhead2_0.701-2.dsc'
-  SUDO_GID='110'
-  SUDO_UID='103'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://10.0.0.15:3142/'
+  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.ZJE8x1zX/pbuilderrc_oMsy --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.ZJE8x1zX/b2 --logfile b2/build.log gearhead2_0.701-2.dsc'
+  SUDO_GID=113
+  SUDO_UID=107
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://10.0.0.15:3142/
 I: uname -a
-  Linux virt64z 6.1.0-30-arm64 #1 SMP Debian 6.1.124-1 (2025-01-12) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-30-armmp-lpae #1 SMP Debian 6.1.124-1 (2025-01-12) armv7l GNU/Linux
 I: ls -l /bin
   lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/20812/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/7598/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -570,7 +602,7 @@
 Get: 446 http://deb.debian.org/debian trixie/main armhf libsdl-ttf2.0-0 armhf 2.0.11-6+b2 [15.3 kB]
 Get: 447 http://deb.debian.org/debian trixie/main armhf libsdl-ttf2.0-dev armhf 2.0.11-6+b2 [24.7 kB]
 Get: 448 http://deb.debian.org/debian trixie/main armhf openimageio-tools armhf 2.5.16.0+dfsg-1+b1 [611 kB]
-Fetched 208 MB in 54s (3818 kB/s)
+Fetched 208 MB in 13s (15.4 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-minimal:armhf.
 (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 ... 19568 files and directories currently installed.)
@@ -2027,8 +2059,8 @@
 Setting up tzdata (2024b-6) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Wed Jan 29 01:11:23 UTC 2025.
-Universal Time is now:  Wed Jan 29 01:11:23 UTC 2025.
+Local time is now:      Wed Jan 29 01:19:44 UTC 2025.
+Universal Time is now:  Wed Jan 29 01:19:44 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up libcap2-bin (1:2.66-5+b1) ...
@@ -2409,7 +2441,11 @@
 fakeroot is already the newest version (1.37-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/gearhead2-0.701/ && 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  > ../gearhead2_0.701-2_source.changes
+I: user script /srv/workspace/pbuilder/7598/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/7598/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/gearhead2-0.701/ && 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  > ../gearhead2_0.701-2_source.changes
 dpkg-buildpackage: info: source package gearhead2
 dpkg-buildpackage: info: source version 0.701-2
 dpkg-buildpackage: info: source distribution unstable
@@ -2523,7 +2559,7 @@
 arenaplay.pp(92,3) Warning: Comment level 2 found
 Compiling gh2arena.pp
 Linking gearhead2
-65919 lines compiled, 5.0 sec
+65919 lines compiled, 8.7 sec
 24 warning(s) issued
 9 note(s) issued
 touch build-arch-stamp
@@ -2717,7 +2753,7 @@
 Linking gearhead2
 gearhead2.pas(255,1) Warning: "crtbegin.o" not found, this will probably cause a linking failure
 gearhead2.pas(255,1) Warning: "crtend.o" not found, this will probably cause a linking failure
-68261 lines compiled, 5.9 sec
+68261 lines compiled, 9.9 sec
 64 warning(s) issued
 57 note(s) issued
 touch build-arch-sdl-stamp
@@ -2732,7 +2768,7 @@
 Target OS: Linux for ARMHF
 Compiling gearhead2.pas
 Linking gearhead2
-255 lines compiled, 0.4 sec
+255 lines compiled, 0.7 sec
 touch build-arch-stamp
 touch build-arch-stamp
 dh_testdir
@@ -2760,9 +2796,9 @@
 dh_strip: warning: Use of debian/compat is deprecated and will be removed in debhelper (>= 14~).
 dh_strip: warning: Use of debian/compat is deprecated and will be removed in debhelper (>= 14~).
 readelf: Warning: Corrupt note: alignment 16, expecting 4 or 8
-dh_strip: warning: Could not find the BuildID in debian/gearhead2-sdl/usr/games/gearhead2-sdl
-readelf: Warning: Corrupt note: alignment 16, expecting 4 or 8
 dh_strip: warning: Could not find the BuildID in debian/gearhead2/usr/games/gearhead2
+readelf: Warning: Corrupt note: alignment 16, expecting 4 or 8
+dh_strip: warning: Could not find the BuildID in debian/gearhead2-sdl/usr/games/gearhead2-sdl
 dh_compress -a
 dh_compress: warning: Use of debian/compat is deprecated and will be removed in debhelper (>= 14~).
 dh_compress: warning: Use of debian/compat is deprecated and will be removed in debhelper (>= 14~).
@@ -2779,8 +2815,8 @@
 dpkg-gencontrol: warning: Depends field of package gearhead2: substitution variable ${shlibs:Depends} used, but is not defined
 dh_md5sums -a
 dh_builddeb -a
-dpkg-deb: building package 'gearhead2' in '../gearhead2_0.701-2_armhf.deb'.
 dpkg-deb: building package 'gearhead2-sdl' in '../gearhead2-sdl_0.701-2_armhf.deb'.
+dpkg-deb: building package 'gearhead2' in '../gearhead2_0.701-2_armhf.deb'.
 dh_testdir
 dh_testroot
 dh_prep
@@ -2823,12 +2859,14 @@
 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/7598/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/7598/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/20812 and its subdirectories
-I: Current time: Tue Jan 28 13:15:47 -12 2025
-I: pbuilder-time-stamp: 1738113347
+I: removing directory /srv/workspace/pbuilder/7598 and its subdirectories
+I: Current time: Wed Jan 29 15:28:09 +14 2025
+I: pbuilder-time-stamp: 1738114089