Diff of the two buildlogs:

--
--- b1/build.log	2025-01-14 09:53:15.235210084 +0000
+++ b2/build.log	2025-01-14 09:58:41.908331084 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Jan 13 21:49:50 -12 2025
-I: pbuilder-time-stamp: 1736848190
+I: Current time: Tue Jan 14 23:53:26 +14 2025
+I: pbuilder-time-stamp: 1736848406
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -22,52 +22,84 @@
 dpkg-source: info: unpacking casilda_0.2.0-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/24896/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/27234/tmp/hooks/D01_modify_environment starting
+debug: Running on virt32z.
+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 14 09:53 /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/27234/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/27234/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='1884b11e94574a4c9ea89103c2d209c1'
-  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='24896'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=44314f44721a4a58a5bc92b1672ea6c6
+  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=27234
   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.EwUihVWr/pbuilderrc_DVxD --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.EwUihVWr/b1 --logfile b1/build.log casilda_0.2.0-2.dsc'
-  SUDO_GID='113'
-  SUDO_UID='107'
-  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.EwUihVWr/pbuilderrc_Na8A --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.EwUihVWr/b2 --logfile b2/build.log casilda_0.2.0-2.dsc'
+  SUDO_GID=110
+  SUDO_UID=103
+  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 virt64b 6.1.0-29-arm64 #1 SMP Debian 6.1.123-1 (2025-01-02) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-29-armmp-lpae #1 SMP Debian 6.1.123-1 (2025-01-02) 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/24896/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/27234/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -509,7 +541,7 @@
 Get: 386 http://deb.debian.org/debian trixie/main armhf libxkbcommon-x11-dev armhf 1.7.0-2 [7140 B]
 Get: 387 http://deb.debian.org/debian trixie/main armhf ninja-build armhf 1.12.1-1 [125 kB]
 Get: 388 http://deb.debian.org/debian trixie/main armhf meson all 1.6.1-1 [629 kB]
-Fetched 144 MB in 2s (59.8 MB/s)
+Fetched 144 MB in 45s (3213 kB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libapparmor1: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 ... 19567 files and directories currently installed.)
@@ -1770,8 +1802,8 @@
 Setting up tzdata (2024b-4) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Tue Jan 14 09:51:41 UTC 2025.
-Universal Time is now:  Tue Jan 14 09:51:41 UTC 2025.
+Local time is now:      Tue Jan 14 09:57:20 UTC 2025.
+Universal Time is now:  Tue Jan 14 09:57:20 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up libxcb-present0:armhf (1.17.0-2+b1) ...
@@ -2110,7 +2142,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/casilda-0.2.0/ && 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  > ../casilda_0.2.0-2_source.changes
+I: user script /srv/workspace/pbuilder/27234/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/27234/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/casilda-0.2.0/ && 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  > ../casilda_0.2.0-2_source.changes
 dpkg-buildpackage: info: source package casilda
 dpkg-buildpackage: info: source version 0.2.0-2
 dpkg-buildpackage: info: source distribution unstable
@@ -2136,7 +2172,7 @@
 C compiler for the host machine: cc (gcc 14.2.0 "cc (Debian 14.2.0-12) 14.2.0")
 C linker for the host machine: cc ld.bfd 2.43.50.20250108
 Host machine cpu family: arm
-Host machine cpu: arm
+Host machine cpu: armv7l
 Found pkg-config: YES (/usr/bin/pkg-config) 1.8.1
 Run-time dependency epoxy found: YES 1.5.10
 Run-time dependency gtk4 found: YES 4.16.12
@@ -2171,9 +2207,9 @@
 
 Found ninja-1.12.1 at /usr/bin/ninja
    dh_auto_build
-	cd obj-arm-linux-gnueabihf && LC_ALL=C.UTF-8 ninja -j3 -v
-[1/11] /usr/bin/wayland-scanner private-code //usr/share/wayland-protocols/stable/xdg-shell/xdg-shell.xml src/xdg-shell-protocol.c
-[2/11] /usr/bin/wayland-scanner server-header //usr/share/wayland-protocols/stable/xdg-shell/xdg-shell.xml src/xdg-shell-protocol.h
+	cd obj-arm-linux-gnueabihf && LC_ALL=C.UTF-8 ninja -j4 -v
+[1/11] /usr/bin/wayland-scanner server-header //usr/share/wayland-protocols/stable/xdg-shell/xdg-shell.xml src/xdg-shell-protocol.h
+[2/11] /usr/bin/wayland-scanner private-code //usr/share/wayland-protocols/stable/xdg-shell/xdg-shell.xml src/xdg-shell-protocol.c
 [3/11] cc -Isrc/libcasilda-0.1.so.p -Isrc -I../src -I/usr/include/gtk-4.0 -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/arm-linux-gnueabihf/glib-2.0/include -I/usr/include/sysprof-6 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/fribidi -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/arm-linux-gnueabihf -I/usr/include/webp -I/usr/include/graphene-1.0 -I/usr/lib/arm-linux-gnueabihf/graphene-1.0/include -I/usr/include/wlroots-0.18 -I/usr/include/libdrm -I/build/reproducible-path/casilda-0.2.0/obj-arm-linux-gnueabihf -fdiagnostics-color=always -Wall -Winvalid-pch -Wextra -std=c11 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/casilda-0.2.0=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -pthread -DHAVE_X11_XCB=1 -MD -MQ src/libcasilda-0.1.so.p/meson-generated_.._xdg-shell-protocol.c.o -MF src/libcasilda-0.1.so.p/meson-generated_.._xdg-shell-protocol.c.o.d -o src/libcasilda-0.1.so.p/meson-generated_.._xdg-shell-protocol.c.o -c src/xdg-shell-protocol.c
 [4/11] cc -Isrc/libcasilda-0.1.so.p -Isrc -I../src -I/usr/include/gtk-4.0 -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/arm-linux-gnueabihf/glib-2.0/include -I/usr/include/sysprof-6 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/fribidi -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/arm-linux-gnueabihf -I/usr/include/webp -I/usr/include/graphene-1.0 -I/usr/lib/arm-linux-gnueabihf/graphene-1.0/include -I/usr/include/wlroots-0.18 -I/usr/include/libdrm -I/build/reproducible-path/casilda-0.2.0/obj-arm-linux-gnueabihf -fdiagnostics-color=always -Wall -Winvalid-pch -Wextra -std=c11 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/casilda-0.2.0=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -pthread -DHAVE_X11_XCB=1 -MD -MQ src/libcasilda-0.1.so.p/casilda-wayland-source.c.o -MF src/libcasilda-0.1.so.p/casilda-wayland-source.c.o.d -o src/libcasilda-0.1.so.p/casilda-wayland-source.c.o -c ../src/casilda-wayland-source.c
 [5/11] cc -Iexamples/compositor.p -Iexamples -I../examples -Isrc -I../src -I/usr/include/gtk-4.0 -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/arm-linux-gnueabihf/glib-2.0/include -I/usr/include/sysprof-6 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/fribidi -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/arm-linux-gnueabihf -I/usr/include/webp -I/usr/include/graphene-1.0 -I/usr/lib/arm-linux-gnueabihf/graphene-1.0/include -I/build/reproducible-path/casilda-0.2.0/obj-arm-linux-gnueabihf -fdiagnostics-color=always -Wall -Winvalid-pch -Wextra -std=c11 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/casilda-0.2.0=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 -Wdate-time -D_FORTIFY_SOURCE=2 -pthread -MD -MQ examples/compositor.p/compositor.c.o -MF examples/compositor.p/compositor.c.o.d -o examples/compositor.p/compositor.c.o -c ../examples/compositor.c
@@ -2186,7 +2222,7 @@
 /usr/include/wayland-server-core.h:512: syntax error, unexpected VOID in ' for (l = (__typeof__(l))((char *)((&signal->listener_list)->next) - __builtin_offsetof (__typeof__(*l), link)), next = (__typeof__(next))((char *)((l)->link.next) - __builtin_offsetof (__typeof__(*next), link)); &l->link != (&signal->listener_list); l = next, next = (__typeof__(next))((char *)(l->link.next) - __builtin_offsetof (__typeof__(*next), link)))' at '__typeof__'
 [11/11] /usr/bin/arm-linux-gnueabihf-g-ir-compiler src/Casilda-0.1.gir --output src/Casilda-0.1.typelib --includedir=/usr/share/gir-1.0
    dh_auto_test
-	cd obj-arm-linux-gnueabihf && DEB_PYTHON_INSTALL_LAYOUT=deb LC_ALL=C.UTF-8 MESON_TESTTHREADS=3 meson test
+	cd obj-arm-linux-gnueabihf && DEB_PYTHON_INSTALL_LAYOUT=deb LC_ALL=C.UTF-8 MESON_TESTTHREADS=4 meson test
 No tests defined.
    create-stamp debian/debhelper-build-stamp
    dh_prep
@@ -2235,12 +2271,14 @@
 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/27234/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/27234/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/24896 and its subdirectories
-I: Current time: Mon Jan 13 21:53:10 -12 2025
-I: pbuilder-time-stamp: 1736848390
+I: removing directory /srv/workspace/pbuilder/27234 and its subdirectories
+I: Current time: Tue Jan 14 23:58:38 +14 2025
+I: pbuilder-time-stamp: 1736848718