Diff of the two buildlogs:

--
--- b1/build.log	2025-02-18 14:15:04.147569440 +0000
+++ b2/build.log	2025-02-18 14:19:43.663004940 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Tue Feb 18 01:44:01 -12 2025
-I: pbuilder-time-stamp: 1739886241
+I: Current time: Tue Mar 24 10:38:06 +14 2026
+I: pbuilder-time-stamp: 1774298286
 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 meson-python_0.17.1-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3602021/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/1897941/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos15-amd64.
+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 23 20:38 /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/1897941/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/1897941/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='amd64'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=20 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='amd64'
+  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]="x86_64-pc-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=amd64
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=42 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='9dfb88cdf650497692f6f3eedb05a53a'
-  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='3602021'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=71b5f94e0c81416f8bef659a2490ec9f
+  LANG=C
+  LANGUAGE=et_EE:et
+  LC_ALL=C
+  MACHTYPE=x86_64-pc-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=1897941
   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.8ZlowkZg/pbuilderrc_hamO --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.8ZlowkZg/b1 --logfile b1/build.log meson-python_0.17.1-1.dsc'
-  SUDO_GID='110'
-  SUDO_UID='105'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://46.16.76.132:3128'
+  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.8ZlowkZg/pbuilderrc_glbW --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.8ZlowkZg/b2 --logfile b2/build.log meson-python_0.17.1-1.dsc'
+  SUDO_GID=111
+  SUDO_UID=106
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://213.165.73.152:3128
 I: uname -a
-  Linux ionos1-amd64 6.1.0-31-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.128-1 (2025-02-07) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.12.9+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.9-1~bpo12+1 (2025-01-19) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3602021/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/1897941/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -307,7 +339,7 @@
 Get: 158 http://deb.debian.org/debian trixie/main amd64 python3-sphinx-copybutton all 0.5.2-2 [17.9 kB]
 Get: 159 http://deb.debian.org/debian trixie/main amd64 python3-sphinx-design all 0.6.1-1 [883 kB]
 Get: 160 http://deb.debian.org/debian trixie/main amd64 python3-sphinxext-opengraph all 0.7.5-1 [9024 B]
-Fetched 85.3 MB in 21s (3986 kB/s)
+Fetched 85.3 MB in 3s (28.7 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-minimal:amd64.
 (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 ... 19809 files and directories currently installed.)
@@ -828,8 +860,8 @@
 Setting up tzdata (2024b-6) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Tue Feb 18 13:47:06 UTC 2025.
-Universal Time is now:  Tue Feb 18 13:47:06 UTC 2025.
+Local time is now:      Mon Mar 23 20:38:53 UTC 2026.
+Universal Time is now:  Mon Mar 23 20:38:53 UTC 2026.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up liberror-perl (0.17029-2) ...
@@ -986,7 +1018,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/meson-python-0.17.1/ && 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  > ../meson-python_0.17.1-1_source.changes
+I: user script /srv/workspace/pbuilder/1897941/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/1897941/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/meson-python-0.17.1/ && 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  > ../meson-python_0.17.1-1_source.changes
 dpkg-buildpackage: info: source package meson-python
 dpkg-buildpackage: info: source version 0.17.1-1
 dpkg-buildpackage: info: source distribution unstable
@@ -1007,11 +1043,11 @@
 I: pybuild plugin_pyproject:129: Building wheel for python3.12 with "build" module
 I: pybuild base:311: python3.12 -m build --skip-dependency-check --no-isolation --wheel --outdir /build/reproducible-path/meson-python-0.17.1/.pybuild/cpython3_3.12_mesonpy --config-setting compile-args=--verbose --config-setting setup-args=--wrap-mode=nodownload --config-setting setup-args=--prefix=/usr --config-setting setup-args=--sysconfdir=/etc --config-setting setup-args=--localstatedir=/var --config-setting setup-args=--libdir=lib/x86_64-linux-gnu 
 * Building wheel...
-+ meson setup /build/reproducible-path/meson-python-0.17.1 /build/reproducible-path/meson-python-0.17.1/.mesonpy-jq4n16tp -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md --wrap-mode=nodownload --prefix=/usr --sysconfdir=/etc --localstatedir=/var --libdir=lib/x86_64-linux-gnu --native-file=/build/reproducible-path/meson-python-0.17.1/.mesonpy-jq4n16tp/meson-python-native-file.ini
++ meson setup /build/reproducible-path/meson-python-0.17.1 /build/reproducible-path/meson-python-0.17.1/.mesonpy-f5akq23v -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md --wrap-mode=nodownload --prefix=/usr --sysconfdir=/etc --localstatedir=/var --libdir=lib/x86_64-linux-gnu --native-file=/build/reproducible-path/meson-python-0.17.1/.mesonpy-f5akq23v/meson-python-native-file.ini
 The Meson build system
 Version: 1.7.0
 Source dir: /build/reproducible-path/meson-python-0.17.1
-Build dir: /build/reproducible-path/meson-python-0.17.1/.mesonpy-jq4n16tp
+Build dir: /build/reproducible-path/meson-python-0.17.1/.mesonpy-f5akq23v
 Build type: native build
 Project name: meson-python
 Project version: 0.17.1
@@ -1023,7 +1059,7 @@
 meson-python 0.17.1
 
   User defined options
-    Native files : /build/reproducible-path/meson-python-0.17.1/.mesonpy-jq4n16tp/meson-python-native-file.ini
+    Native files : /build/reproducible-path/meson-python-0.17.1/.mesonpy-f5akq23v/meson-python-native-file.ini
     b_ndebug     : if-release
     b_vscrt      : md
     buildtype    : release
@@ -1048,11 +1084,11 @@
 I: pybuild plugin_pyproject:129: Building wheel for python3.13 with "build" module
 I: pybuild base:311: python3.13 -m build --skip-dependency-check --no-isolation --wheel --outdir /build/reproducible-path/meson-python-0.17.1/.pybuild/cpython3_3.13_mesonpy --config-setting compile-args=--verbose --config-setting setup-args=--wrap-mode=nodownload --config-setting setup-args=--prefix=/usr --config-setting setup-args=--sysconfdir=/etc --config-setting setup-args=--localstatedir=/var --config-setting setup-args=--libdir=lib/x86_64-linux-gnu 
 * Building wheel...
-+ meson setup /build/reproducible-path/meson-python-0.17.1 /build/reproducible-path/meson-python-0.17.1/.mesonpy-2ct49bga -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md --wrap-mode=nodownload --prefix=/usr --sysconfdir=/etc --localstatedir=/var --libdir=lib/x86_64-linux-gnu --native-file=/build/reproducible-path/meson-python-0.17.1/.mesonpy-2ct49bga/meson-python-native-file.ini
++ meson setup /build/reproducible-path/meson-python-0.17.1 /build/reproducible-path/meson-python-0.17.1/.mesonpy-imtz4ivy -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md --wrap-mode=nodownload --prefix=/usr --sysconfdir=/etc --localstatedir=/var --libdir=lib/x86_64-linux-gnu --native-file=/build/reproducible-path/meson-python-0.17.1/.mesonpy-imtz4ivy/meson-python-native-file.ini
 The Meson build system
 Version: 1.7.0
 Source dir: /build/reproducible-path/meson-python-0.17.1
-Build dir: /build/reproducible-path/meson-python-0.17.1/.mesonpy-2ct49bga
+Build dir: /build/reproducible-path/meson-python-0.17.1/.mesonpy-imtz4ivy
 Build type: native build
 Project name: meson-python
 Project version: 0.17.1
@@ -1064,7 +1100,7 @@
 meson-python 0.17.1
 
   User defined options
-    Native files : /build/reproducible-path/meson-python-0.17.1/.mesonpy-2ct49bga/meson-python-native-file.ini
+    Native files : /build/reproducible-path/meson-python-0.17.1/.mesonpy-imtz4ivy/meson-python-native-file.ini
     b_ndebug     : if-release
     b_vscrt      : md
     buildtype    : release
@@ -1094,7 +1130,7 @@
 making output directory... done
 loading intersphinx inventory 'python' from https://docs.python.org/3/objects.inv ...
 WARNING: failed to reach any of the inventories with the following issues:
-intersphinx inventory 'https://docs.python.org/3/objects.inv' not fetchable due to <class 'requests.exceptions.ConnectionError'>: HTTPSConnectionPool(host='docs.python.org', port=443): Max retries exceeded with url: /3/objects.inv (Caused by NameResolutionError("<urllib3.connection.HTTPSConnection object at 0x7f2e5e0d6660>: Failed to resolve 'docs.python.org' ([Errno -3] Temporary failure in name resolution)"))
+intersphinx inventory 'https://docs.python.org/3/objects.inv' not fetchable due to <class 'requests.exceptions.ConnectionError'>: HTTPSConnectionPool(host='docs.python.org', port=443): Max retries exceeded with url: /3/objects.inv (Caused by NameResolutionError("<urllib3.connection.HTTPSConnection object at 0x7f9be82f2660>: Failed to resolve 'docs.python.org' ([Errno -3] Temporary failure in name resolution)"))
 building [mo]: targets for 0 po files that are out of date
 writing output... 
 building [html]: targets for 16 source files that are out of date
@@ -1123,9 +1159,9 @@
 preparing documents... done
 copying assets... 
 copying static files... 
+Writing evaluated template result to /build/reproducible-path/meson-python-0.17.1/build/html/_static/documentation_options.js
 Writing evaluated template result to /build/reproducible-path/meson-python-0.17.1/build/html/_static/language_data.js
 Writing evaluated template result to /build/reproducible-path/meson-python-0.17.1/build/html/_static/basic.css
-Writing evaluated template result to /build/reproducible-path/meson-python-0.17.1/build/html/_static/documentation_options.js
 Writing evaluated template result to /build/reproducible-path/meson-python-0.17.1/build/html/_static/copybutton.js
 copying static files: done
 copying extra files... 
@@ -1162,7 +1198,7 @@
 platform linux -- Python 3.12.9, pytest-8.3.4, pluggy-1.5.0
 rootdir: /build/reproducible-path/meson-python-0.17.1/.pybuild/cpython3_3.12_mesonpy/build
 configfile: pyproject.toml
-plugins: mock-3.14.0, typeguard-4.4.1
+plugins: typeguard-4.4.1, mock-3.14.0
 collected 123 items
 
 tests/test_consistency.py .                                              [  0%]
@@ -1186,13 +1222,13 @@
 SKIPPED [1] tests/test_tags.py:59: macOS specific test
 SKIPPED [1] tests/test_tags.py:69: macOS specific test
 SKIPPED [2] tests/test_wheel.py:251: macOS specific test
-================= 112 passed, 11 skipped in 681.73s (0:11:21) ==================
+================== 112 passed, 11 skipped in 90.92s (0:01:30) ==================
 I: pybuild base:311: cd /build/reproducible-path/meson-python-0.17.1/.pybuild/cpython3_3.13_mesonpy/build; python3.13 -m pytest tests
 ============================= test session starts ==============================
 platform linux -- Python 3.13.2, pytest-8.3.4, pluggy-1.5.0
 rootdir: /build/reproducible-path/meson-python-0.17.1/.pybuild/cpython3_3.13_mesonpy/build
 configfile: pyproject.toml
-plugins: mock-3.14.0, typeguard-4.4.1
+plugins: typeguard-4.4.1, mock-3.14.0
 collected 123 items
 
 tests/test_consistency.py .                                              [  0%]
@@ -1216,7 +1252,7 @@
 SKIPPED [1] tests/test_tags.py:59: macOS specific test
 SKIPPED [1] tests/test_tags.py:69: macOS specific test
 SKIPPED [2] tests/test_wheel.py:251: macOS specific test
-================= 112 passed, 11 skipped in 616.23s (0:10:16) ==================
+================== 112 passed, 11 skipped in 89.79s (0:01:29) ==================
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=pybuild
    dh_prep -O--buildsystem=pybuild
@@ -1228,8 +1264,8 @@
    dh_sphinxdoc -O--buildsystem=pybuild
 dh_sphinxdoc: warning: ignoring unknown JavaScript code: debian/python3-mesonpy/usr/share/doc/python3-mesonpy/html/_static/design-tabs.js
 dh_sphinxdoc: warning: ignoring unknown JavaScript code: debian/python3-mesonpy/usr/share/doc/python3-mesonpy/html/_static/copybutton.js
-dh_sphinxdoc: warning: ignoring unknown JavaScript code: debian/python3-mesonpy/usr/share/doc/python3-mesonpy/html/_static/copybutton_funcs.js
 dh_sphinxdoc: warning: ignoring unknown JavaScript code: debian/python3-mesonpy/usr/share/doc/python3-mesonpy/html/_static/clipboard.min.js
+dh_sphinxdoc: warning: ignoring unknown JavaScript code: debian/python3-mesonpy/usr/share/doc/python3-mesonpy/html/_static/copybutton_funcs.js
    debian/rules override_dh_installchangelogs
 make[1]: Entering directory '/build/reproducible-path/meson-python-0.17.1'
 dh_installchangelogs CHANGELOG.rst
@@ -1256,12 +1292,14 @@
 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/1897941/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/1897941/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/3602021 and its subdirectories
-I: Current time: Tue Feb 18 02:15:03 -12 2025
-I: pbuilder-time-stamp: 1739888103
+I: removing directory /srv/workspace/pbuilder/1897941 and its subdirectories
+I: Current time: Tue Mar 24 10:42:43 +14 2026
+I: pbuilder-time-stamp: 1774298563