Diff of the two buildlogs:

--
--- b1/build.log	2025-09-16 19:04:28.590845271 +0000
+++ b2/build.log	2025-09-16 19:05:33.154932048 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Oct 19 13:26:30 -12 2026
-I: pbuilder-time-stamp: 1792459590
+I: Current time: Wed Sep 17 09:04:30 +14 2025
+I: pbuilder-time-stamp: 1758049470
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -22,53 +22,85 @@
 dpkg-source: info: unpacking obs-source-copy_0.2.5-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3474234/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/1046294/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 Sep 16 19:04 /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/1046294/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/1046294/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]="3" [2]="3" [3]="1" [4]="release" [5]="aarch64-unknown-linux-gnu")
+  BASH_VERSION='5.3.3(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='unstable'
-  HOME='/root'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  INVOCATION_ID='b24e6b77cf5540ea80f19e38b2aefc36'
-  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='3474234'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=b9514a2e63fc4c3591dace657dc4837d
+  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=1046294
   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.Tqol7DAL/pbuilderrc_iTXI --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.Tqol7DAL/b1 --logfile b1/build.log obs-source-copy_0.2.5-2.dsc'
-  SUDO_GID='109'
-  SUDO_HOME='/var/lib/jenkins'
-  SUDO_UID='104'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://192.168.101.4:3128'
+  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.Tqol7DAL/pbuilderrc_2uOS --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.Tqol7DAL/b2 --logfile b2/build.log obs-source-copy_0.2.5-2.dsc'
+  SUDO_GID=109
+  SUDO_HOME=/var/lib/jenkins
+  SUDO_UID=104
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://192.168.101.4:3128
 I: uname -a
-  Linux codethink03-arm64 6.12.43+deb13-cloud-arm64 #1 SMP Debian 6.12.43-1 (2025-08-27) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.12.43+deb13-cloud-arm64 #1 SMP Debian 6.12.43-1 (2025-08-27) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Aug 10  2025 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3474234/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Aug 10 12:30 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/1046294/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -390,7 +422,7 @@
 Get: 276 http://deb.debian.org/debian unstable/main arm64 qt6-base-dev-tools arm64 6.8.2+dfsg-10.1 [961 kB]
 Get: 277 http://deb.debian.org/debian unstable/main arm64 qt6-qpa-plugins arm64 6.8.2+dfsg-10.1 [89.7 kB]
 Get: 278 http://deb.debian.org/debian unstable/main arm64 qt6-base-dev arm64 6.8.2+dfsg-10.1 [1952 kB]
-Fetched 156 MB in 1s (106 MB/s)
+Fetched 156 MB in 1s (213 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libexpat1:arm64.
 (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 ... 20020 files and directories currently installed.)
@@ -1319,8 +1351,8 @@
 Setting up tzdata (2025b-5) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Tue Oct 20 01:27:08 UTC 2026.
-Universal Time is now:  Tue Oct 20 01:27:08 UTC 2026.
+Local time is now:      Tue Sep 16 19:05:07 UTC 2025.
+Universal Time is now:  Tue Sep 16 19:05:07 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up libxcb-present0:arm64 (1.17.0-2+b1) ...
@@ -1533,7 +1565,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/obs-source-copy-0.2.5/ && 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  > ../obs-source-copy_0.2.5-2_source.changes
+I: user script /srv/workspace/pbuilder/1046294/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/1046294/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/obs-source-copy-0.2.5/ && 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  > ../obs-source-copy_0.2.5-2_source.changes
 dpkg-buildpackage: info: source package obs-source-copy
 dpkg-buildpackage: info: source version 0.2.5-2
 dpkg-buildpackage: info: source distribution unstable
@@ -1549,7 +1585,7 @@
    dh_autoreconf
    debian/rules execute_before_dh_auto_configure
 make[1]: Entering directory '/build/reproducible-path/obs-source-copy-0.2.5'
-if [ "codethink03-arm64" = "canopus" ]; then \
+if [ "i-capture-the-hostname" = "canopus" ]; then \
     LINESUS=36; \
     LINESPT=36; \
     if [ "$LINESUS" != "$LINESPT" ]; then \
@@ -1591,8 +1627,8 @@
 -- Found WrapOpenGL: TRUE
 -- Found XKB: /usr/lib/aarch64-linux-gnu/libxkbcommon.so (Required is at least version "0.5.0")
 -- Found WrapVulkanHeaders: /usr/include
--- Configuring done (1.4s)
--- Generating done (0.0s)
+-- Configuring done (2.3s)
+-- Generating done (0.1s)
 CMake Warning:
   Manually-specified variables were not used by the project:
 
@@ -1649,10 +1685,10 @@
 make[3]: Leaving directory '/build/reproducible-path/obs-source-copy-0.2.5/obj-aarch64-linux-gnu'
 make  -f CMakeFiles/source-copy.dir/build.make CMakeFiles/source-copy.dir/build
 make[3]: Entering directory '/build/reproducible-path/obs-source-copy-0.2.5/obj-aarch64-linux-gnu'
-[ 40%] Building CXX object CMakeFiles/source-copy.dir/source-copy_autogen/mocs_compilation.cpp.o
-/usr/bin/c++ -DHAVE_OBSCONFIG_H -DQT_CORE_LIB -DQT_GUI_LIB -DQT_NO_DEBUG -DQT_WIDGETS_LIB -Dsource_copy_EXPORTS -I/build/reproducible-path/obs-source-copy-0.2.5/obj-aarch64-linux-gnu/source-copy_autogen/include -isystem /usr/include/obs -isystem /usr/include/aarch64-linux-gnu/qt6/QtWidgets -isystem /usr/include/aarch64-linux-gnu/qt6 -isystem /usr/include/aarch64-linux-gnu/qt6/QtCore -isystem /usr/lib/aarch64-linux-gnu/qt6/mkspecs/linux-g++ -isystem /usr/include/aarch64-linux-gnu/qt6/QtGui -g -O2 -ffile-prefix-map=/build/reproducible-path/obs-source-copy-0.2.5=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -Werror -Wextra -Wvla -Wformat -Wformat-security -Wswitch -Wunused-parameter -Wno-unused-function -Wno-missing-field-initializers -fno-strict-aliasing -Wconversion-null -DSIMDE_ENABLE_OPENMP -fopenmp-simd -MD -MT CMakeFiles/source-copy.dir/source-copy_autogen/mocs_compilation.cpp.o -MF CMakeFiles/source-copy.dir/source-copy_autogen/mocs_compilation.cpp.o.d -o CMakeFiles/source-copy.dir/source-copy_autogen/mocs_compilation.cpp.o -c /build/reproducible-path/obs-source-copy-0.2.5/obj-aarch64-linux-gnu/source-copy_autogen/mocs_compilation.cpp
 [ 60%] Building CXX object CMakeFiles/source-copy.dir/source-copy.cpp.o
+[ 60%] Building CXX object CMakeFiles/source-copy.dir/source-copy_autogen/mocs_compilation.cpp.o
 /usr/bin/c++ -DHAVE_OBSCONFIG_H -DQT_CORE_LIB -DQT_GUI_LIB -DQT_NO_DEBUG -DQT_WIDGETS_LIB -Dsource_copy_EXPORTS -I/build/reproducible-path/obs-source-copy-0.2.5/obj-aarch64-linux-gnu/source-copy_autogen/include -isystem /usr/include/obs -isystem /usr/include/aarch64-linux-gnu/qt6/QtWidgets -isystem /usr/include/aarch64-linux-gnu/qt6 -isystem /usr/include/aarch64-linux-gnu/qt6/QtCore -isystem /usr/lib/aarch64-linux-gnu/qt6/mkspecs/linux-g++ -isystem /usr/include/aarch64-linux-gnu/qt6/QtGui -g -O2 -ffile-prefix-map=/build/reproducible-path/obs-source-copy-0.2.5=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -Werror -Wextra -Wvla -Wformat -Wformat-security -Wswitch -Wunused-parameter -Wno-unused-function -Wno-missing-field-initializers -fno-strict-aliasing -Wconversion-null -DSIMDE_ENABLE_OPENMP -fopenmp-simd -MD -MT CMakeFiles/source-copy.dir/source-copy.cpp.o -MF CMakeFiles/source-copy.dir/source-copy.cpp.o.d -o CMakeFiles/source-copy.dir/source-copy.cpp.o -c /build/reproducible-path/obs-source-copy-0.2.5/source-copy.cpp
+/usr/bin/c++ -DHAVE_OBSCONFIG_H -DQT_CORE_LIB -DQT_GUI_LIB -DQT_NO_DEBUG -DQT_WIDGETS_LIB -Dsource_copy_EXPORTS -I/build/reproducible-path/obs-source-copy-0.2.5/obj-aarch64-linux-gnu/source-copy_autogen/include -isystem /usr/include/obs -isystem /usr/include/aarch64-linux-gnu/qt6/QtWidgets -isystem /usr/include/aarch64-linux-gnu/qt6 -isystem /usr/include/aarch64-linux-gnu/qt6/QtCore -isystem /usr/lib/aarch64-linux-gnu/qt6/mkspecs/linux-g++ -isystem /usr/include/aarch64-linux-gnu/qt6/QtGui -g -O2 -ffile-prefix-map=/build/reproducible-path/obs-source-copy-0.2.5=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -Werror -Wextra -Wvla -Wformat -Wformat-security -Wswitch -Wunused-parameter -Wno-unused-function -Wno-missing-field-initializers -fno-strict-aliasing -Wconversion-null -DSIMDE_ENABLE_OPENMP -fopenmp-simd -MD -MT CMakeFiles/source-copy.dir/source-copy_autogen/mocs_compilation.cpp.o -MF CMakeFiles/source-copy.dir/source-copy_autogen/mocs_compilation.cpp.o.d -o CMakeFiles/source-copy.dir/source-copy_autogen/mocs_compilation.cpp.o -c /build/reproducible-path/obs-source-copy-0.2.5/obj-aarch64-linux-gnu/source-copy_autogen/mocs_compilation.cpp
 [ 80%] Linking CXX shared module source-copy.so
 /usr/bin/cmake -E cmake_link_script CMakeFiles/source-copy.dir/link.txt --verbose=1
 /usr/lib/aarch64-linux-gnu/libobs-frontend-api.so.30: warning: GCS is required by -z gcs, but this shared library lacks the necessary property note. The dynamic loader might not enable GCS or refuse to load the program unless all the shared library dependencies have the GCS marking.
@@ -1745,12 +1781,14 @@
 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/1046294/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/1046294/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/3474234 and its subdirectories
-I: Current time: Mon Oct 19 13:27:27 -12 2026
-I: pbuilder-time-stamp: 1792459647
+I: removing directory /srv/workspace/pbuilder/1046294 and its subdirectories
+I: Current time: Wed Sep 17 09:05:32 +14 2025
+I: pbuilder-time-stamp: 1758049532