Diff of the two buildlogs:

--
--- b1/build.log	2025-03-07 04:57:28.885480045 +0000
+++ b2/build.log	2025-03-07 04:59:52.059029427 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Apr  8 23:19:21 -12 2026
-I: pbuilder-time-stamp: 1775733561
+I: Current time: Fri Mar  7 18:57:32 +14 2025
+I: pbuilder-time-stamp: 1741323452
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -22,52 +22,84 @@
 dpkg-source: info: unpacking libmediaart_1.9.7-1.debian.tar.xz
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3605658/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/2328328/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 Mar  7 04:57 /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/2328328/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/2328328/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]="37" [3]="1" [4]="release" [5]="aarch64-unknown-linux-gnu")
+  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=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='a90cfa2df2e24c858ea86e28962f3d65'
-  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='3605658'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=a9c41b53cb6c470ca3f759ba3b5ca3da
+  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=2328328
   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.y6f1q0c7/pbuilderrc_X8lp --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.y6f1q0c7/b1 --logfile b1/build.log libmediaart_1.9.7-1.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://192.168.101.4:3128'
+  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.y6f1q0c7/pbuilderrc_P3lY --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.y6f1q0c7/b2 --logfile b2/build.log libmediaart_1.9.7-1.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://192.168.101.4:3128
 I: uname -a
-  Linux codethink03-arm64 6.1.0-31-cloud-arm64 #1 SMP Debian 6.1.128-1 (2025-02-07) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-31-cloud-arm64 #1 SMP Debian 6.1.128-1 (2025-02-07) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3605658/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4 11:20 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/2328328/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -282,7 +314,7 @@
 Get: 163 http://deb.debian.org/debian unstable/main arm64 valac-0.56-vapi all 0.56.18-2 [1080 kB]
 Get: 164 http://deb.debian.org/debian unstable/main arm64 valac-bin arm64 0.56.18-2 [337 kB]
 Get: 165 http://deb.debian.org/debian unstable/main arm64 valac arm64 0.56.18-2 [422 kB]
-Fetched 59.5 MB in 0s (174 MB/s)
+Fetched 59.5 MB in 1s (114 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-minimal: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 ... 19897 files and directories currently installed.)
@@ -825,8 +857,8 @@
 Setting up tzdata (2025a-2) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Thu Apr  9 11:19:49 UTC 2026.
-Universal Time is now:  Thu Apr  9 11:19:49 UTC 2026.
+Local time is now:      Fri Mar  7 04:58:36 UTC 2025.
+Universal Time is now:  Fri Mar  7 04:58:36 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up libsysprof-capture-4-dev:arm64 (48~beta-2) ...
@@ -978,7 +1010,11 @@
 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/libmediaart-1.9.7/ && 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  > ../libmediaart_1.9.7-1_source.changes
+I: user script /srv/workspace/pbuilder/2328328/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/2328328/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libmediaart-1.9.7/ && 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  > ../libmediaart_1.9.7-1_source.changes
 dpkg-buildpackage: info: source package libmediaart
 dpkg-buildpackage: info: source version 1.9.7-1
 dpkg-buildpackage: info: source distribution unstable
@@ -1106,15 +1142,15 @@
 html/libmediaart-Cache.html:311: warning: no link for: "GObject" -> (<span class="type">GObject</span>).
 
 1/2 libmediaart-doc-check RUNNING       
->>> MESON_TEST_ITERATION=1 DOC_MODULE=libmediaart ASAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1 MSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 DOC_MAIN_SGML_FILE=libmediaart-docs.xml MALLOC_PERTURB_=81 UBSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 /usr/bin/gtkdoc-check
+>>> DOC_MODULE=libmediaart ASAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1 DOC_MAIN_SGML_FILE=libmediaart-docs.xml MESON_TEST_ITERATION=1 UBSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 MSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 MALLOC_PERTURB_=209 /usr/bin/gtkdoc-check
 
 2/2 mediaart              RUNNING       
->>> MESON_TEST_ITERATION=1 G_TEST_SRCDIR=/build/reproducible-path/libmediaart-1.9.7/tests ASAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1 MSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 MALLOC_PERTURB_=166 LD_LIBRARY_PATH=/build/reproducible-path/libmediaart-1.9.7/obj-aarch64-linux-gnu/libmediaart UBSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 /build/reproducible-path/libmediaart-1.9.7/obj-aarch64-linux-gnu/tests/mediaart-test
+>>> ASAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1 MALLOC_PERTURB_=251 LD_LIBRARY_PATH=/build/reproducible-path/libmediaart-1.9.7/obj-aarch64-linux-gnu/libmediaart MESON_TEST_ITERATION=1 UBSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 MSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 G_TEST_SRCDIR=/build/reproducible-path/libmediaart-1.9.7/tests /build/reproducible-path/libmediaart-1.9.7/obj-aarch64-linux-gnu/tests/mediaart-test
 
-2/2 mediaart              OK              0.03s
+2/2 mediaart              OK              0.13s
 ――――――――――――――――――――――――――――――――――――― ✀  ―――――――――――――――――――――――――――――――――――――
 TAP version 14
-# random seed: R02Se89eddf5490001d50cccb4ccba10547e
+# random seed: R02Se4c0250c11ae7820171969ebf9c6dab6
 1..31
 # Start of mediaart tests
 ok 1 /mediaart/stripping_failures
@@ -1157,15 +1193,15 @@
 # DEBUG: Initializing media art processing requirements...
 # DEBUG: Processing media art: artist:'King Kilo', title:'Radium', type:'album', uri:'file:///build/reproducible-path/libmediaart-1.9.7/tests/543249_King-Kilo---Radium.mp3', flags:0x00000001
 # DEBUG: Album art (PNG) found in same directory being used:'/build/reproducible-path/libmediaart-1.9.7/tests/cover.png'
-# DEBUG: Creating symlink ('/tmp/libmediaart-tests-1SQPN3/media-art/album-b0e73017ccad6852d91dfb20f48f1445-7215ee9c7d9dc229d2921a40e899ec5f.jpeg' --> '/tmp/libmediaart-tests-1SQPN3/media-art/album-828cef6b664a0ba43323ee23a8772591-b0e73017ccad6852d91dfb20f48f1445.jpeg'), no error given
-# MESSAGE: Removed media-art for artist:'King Kilo', album:'Radium': deleting file '/tmp/libmediaart-tests-1SQPN3/media-art/album-828cef6b664a0ba43323ee23a8772591-b0e73017ccad6852d91dfb20f48f1445.jpeg'
-# MESSAGE: Removed media-art for album:'Radium': deleting file '/tmp/libmediaart-tests-1SQPN3/media-art/album-b0e73017ccad6852d91dfb20f48f1445-7215ee9c7d9dc229d2921a40e899ec5f.jpeg'
+# DEBUG: Creating symlink ('/tmp/libmediaart-tests-0HIO22/media-art/album-b0e73017ccad6852d91dfb20f48f1445-7215ee9c7d9dc229d2921a40e899ec5f.jpeg' --> '/tmp/libmediaart-tests-0HIO22/media-art/album-828cef6b664a0ba43323ee23a8772591-b0e73017ccad6852d91dfb20f48f1445.jpeg'), no error given
+# MESSAGE: Removed media-art for artist:'King Kilo', album:'Radium': deleting file '/tmp/libmediaart-tests-0HIO22/media-art/album-828cef6b664a0ba43323ee23a8772591-b0e73017ccad6852d91dfb20f48f1445.jpeg'
+# MESSAGE: Removed media-art for album:'Radium': deleting file '/tmp/libmediaart-tests-0HIO22/media-art/album-b0e73017ccad6852d91dfb20f48f1445-7215ee9c7d9dc229d2921a40e899ec5f.jpeg'
 ok 29 /mediaart/process/file
 # DEBUG: Initializing media art processing requirements...
 # DEBUG: Processing media art: artist:'', title:'Lanedo', type:'album', uri:'file:///build/reproducible-path/libmediaart-1.9.7/tests/cover.png', flags:0x00000000
 # DEBUG: Album art (PNG) found in same directory being used:'/build/reproducible-path/libmediaart-1.9.7/tests/cover.png'
-# DEBUG: Renaming ('/tmp/libmediaart-tests-1SQPN3/media-art/album-be60c84852d9762b0a896ba9ba24245e-7215ee9c7d9dc229d2921a40e899ec5f.jpeg-tmp' --> '/tmp/libmediaart-tests-1SQPN3/media-art/album-be60c84852d9762b0a896ba9ba24245e-7215ee9c7d9dc229d2921a40e899ec5f.jpeg'), no error given
-# MESSAGE: Removed media-art for artist:'Lanedo', album:'(null)': deleting file '/tmp/libmediaart-tests-1SQPN3/media-art/album-be60c84852d9762b0a896ba9ba24245e-7215ee9c7d9dc229d2921a40e899ec5f.jpeg'
+# DEBUG: Renaming ('/tmp/libmediaart-tests-0HIO22/media-art/album-be60c84852d9762b0a896ba9ba24245e-7215ee9c7d9dc229d2921a40e899ec5f.jpeg-tmp' --> '/tmp/libmediaart-tests-0HIO22/media-art/album-be60c84852d9762b0a896ba9ba24245e-7215ee9c7d9dc229d2921a40e899ec5f.jpeg'), no error given
+# MESSAGE: Removed media-art for artist:'Lanedo', album:'(null)': deleting file '/tmp/libmediaart-tests-0HIO22/media-art/album-be60c84852d9762b0a896ba9ba24245e-7215ee9c7d9dc229d2921a40e899ec5f.jpeg'
 ok 30 /mediaart/process/buffer
 # DEBUG: Initializing media art processing requirements...
 ok 31 /mediaart/process/failures
@@ -1174,11 +1210,9 @@
 # End of process tests
 # End of mediaart tests
 # GLib-DEBUG: unsetenv() is not thread-safe and should not be used after threads are created
-# DEBUG: Processing media art: artist:'Foo', title:'Bar', type:'album', uri:'file:///invalid/path.png', flags:0x00000000
-# DEBUG: Could not get mtime for file 'file:///invalid/path.png': Error when getting information for file ?/invalid/path.png?: No such file or directory
 ――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――
 
-1/2 libmediaart-doc-check OK              0.09s
+1/2 libmediaart-doc-check OK              0.17s
 ――――――――――――――――――――――――――――――――――――― ✀  ―――――――――――――――――――――――――――――――――――――
 Running suite(s): gtk-doc-libmediaart
 100.0%: Checks 4, Failures: 0
@@ -1237,9 +1271,9 @@
 dpkg-gencontrol: warning: Depends field of package gir1.2-mediaart-2.0: substitution variable ${shlibs:Depends} used, but is not defined
    dh_md5sums
    dh_builddeb
-dpkg-deb: building package 'libmediaart-2.0-0' in '../libmediaart-2.0-0_1.9.7-1_arm64.deb'.
 dpkg-deb: building package 'libmediaart-2.0-0-dbgsym' in '../libmediaart-2.0-0-dbgsym_1.9.7-1_arm64.deb'.
 dpkg-deb: building package 'libmediaart-2.0-dev' in '../libmediaart-2.0-dev_1.9.7-1_arm64.deb'.
+dpkg-deb: building package 'libmediaart-2.0-0' in '../libmediaart-2.0-0_1.9.7-1_arm64.deb'.
 dpkg-deb: building package 'libmediaart-doc' in '../libmediaart-doc_1.9.7-1_all.deb'.
 dpkg-deb: building package 'gir1.2-mediaart-2.0' in '../gir1.2-mediaart-2.0_1.9.7-1_arm64.deb'.
  dpkg-genbuildinfo --build=binary -O../libmediaart_1.9.7-1_arm64.buildinfo
@@ -1249,12 +1283,14 @@
 dpkg-buildpackage: info: binary-only upload (no source included)
 dpkg-genchanges: info: including full source code in upload
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/2328328/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/2328328/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/3605658 and its subdirectories
-I: Current time: Wed Apr  8 23:20:27 -12 2026
-I: pbuilder-time-stamp: 1775733627
+I: removing directory /srv/workspace/pbuilder/2328328 and its subdirectories
+I: Current time: Fri Mar  7 18:59:50 +14 2025
+I: pbuilder-time-stamp: 1741323590