Diff of the two buildlogs:

--
--- b1/build.log	2025-01-21 23:20:41.037008318 +0000
+++ b2/build.log	2025-01-21 23:23:09.310381966 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Tue Jan 21 11:16:39 -12 2025
-I: pbuilder-time-stamp: 1737501399
+I: Current time: Wed Jan 22 13:20:50 +14 2025
+I: pbuilder-time-stamp: 1737501650
 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 python-smhi_1.0.19-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/32230/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/18590/tmp/hooks/D01_modify_environment starting
+debug: Running on virt32c.
+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 21 23:21 /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/18590/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/18590/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='c9be686300594a6590dbb593f692fa4f'
-  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='32230'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=39e1dcfb26164573b65f01096349d041
+  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=18590
   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.Sj9TmAH4/pbuilderrc_JkA9 --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.Sj9TmAH4/b1 --logfile b1/build.log python-smhi_1.0.19-1.dsc'
-  SUDO_GID='114'
-  SUDO_UID='108'
-  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.Sj9TmAH4/pbuilderrc_jadC --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.Sj9TmAH4/b2 --logfile b2/build.log python-smhi_1.0.19-1.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 virt64a 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/32230/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/18590/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -232,7 +264,7 @@
 Get: 105 http://deb.debian.org/debian trixie/main armhf python3-urllib3 all 2.2.3-4 [112 kB]
 Get: 106 http://deb.debian.org/debian trixie/main armhf python3-requests all 2.32.3+dfsg-1 [71.9 kB]
 Get: 107 http://deb.debian.org/debian trixie/main armhf python3-requests-toolbelt all 1.0.0-4 [40.3 kB]
-Fetched 36.6 MB in 2s (22.1 MB/s)
+Fetched 36.6 MB in 1s (37.7 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.12-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 ... 19569 files and directories currently installed.)
@@ -588,8 +620,8 @@
 Setting up tzdata (2024b-6) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Tue Jan 21 23:18:23 UTC 2025.
-Universal Time is now:  Tue Jan 21 23:18:23 UTC 2025.
+Local time is now:      Tue Jan 21 23:21:47 UTC 2025.
+Universal Time is now:  Tue Jan 21 23:21:47 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up libpython3.13-minimal:armhf (3.13.1-3) ...
@@ -696,7 +728,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/python-smhi-1.0.19/ && 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  > ../python-smhi_1.0.19-1_source.changes
+I: user script /srv/workspace/pbuilder/18590/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/18590/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/python-smhi-1.0.19/ && 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  > ../python-smhi_1.0.19-1_source.changes
 dpkg-buildpackage: info: source package python-smhi
 dpkg-buildpackage: info: source version 1.0.19-1
 dpkg-buildpackage: info: source distribution unstable
@@ -721,17 +757,17 @@
 running build
 running build_py
 creating build/lib/smhi
-copying smhi/smhi_lib.py -> build/lib/smhi
 copying smhi/__init__.py -> build/lib/smhi
 copying smhi/test_smhi_lib.py -> build/lib/smhi
+copying smhi/smhi_lib.py -> build/lib/smhi
 installing to build/bdist.linux-armv7l/wheel
 running install
 running install_lib
 creating build/bdist.linux-armv7l/wheel
 creating build/bdist.linux-armv7l/wheel/smhi
-copying build/lib/smhi/smhi_lib.py -> build/bdist.linux-armv7l/wheel/./smhi
 copying build/lib/smhi/__init__.py -> build/bdist.linux-armv7l/wheel/./smhi
 copying build/lib/smhi/test_smhi_lib.py -> build/bdist.linux-armv7l/wheel/./smhi
+copying build/lib/smhi/smhi_lib.py -> build/bdist.linux-armv7l/wheel/./smhi
 running install_egg_info
 running egg_info
 creating smhi_pkg.egg-info
@@ -747,7 +783,7 @@
 Copying smhi_pkg.egg-info to build/bdist.linux-armv7l/wheel/./smhi_pkg-1.0.19.egg-info
 running install_scripts
 creating build/bdist.linux-armv7l/wheel/smhi_pkg-1.0.19.dist-info/WHEEL
-creating '/build/reproducible-path/python-smhi-1.0.19/.pybuild/cpython3_3.13/.tmp-6vdwrlon/smhi_pkg-1.0.19-py3-none-any.whl' and adding 'build/bdist.linux-armv7l/wheel' to it
+creating '/build/reproducible-path/python-smhi-1.0.19/.pybuild/cpython3_3.13/.tmp-ik93u5mp/smhi_pkg-1.0.19-py3-none-any.whl' and adding 'build/bdist.linux-armv7l/wheel' to it
 adding 'smhi/__init__.py'
 adding 'smhi/smhi_lib.py'
 adding 'smhi/test_smhi_lib.py'
@@ -770,9 +806,9 @@
 running install_lib
 creating build/bdist.linux-armv7l/wheel
 creating build/bdist.linux-armv7l/wheel/smhi
-copying build/lib/smhi/smhi_lib.py -> build/bdist.linux-armv7l/wheel/./smhi
 copying build/lib/smhi/__init__.py -> build/bdist.linux-armv7l/wheel/./smhi
 copying build/lib/smhi/test_smhi_lib.py -> build/bdist.linux-armv7l/wheel/./smhi
+copying build/lib/smhi/smhi_lib.py -> build/bdist.linux-armv7l/wheel/./smhi
 running install_egg_info
 running egg_info
 writing smhi_pkg.egg-info/PKG-INFO
@@ -786,7 +822,7 @@
 Copying smhi_pkg.egg-info to build/bdist.linux-armv7l/wheel/./smhi_pkg-1.0.19.egg-info
 running install_scripts
 creating build/bdist.linux-armv7l/wheel/smhi_pkg-1.0.19.dist-info/WHEEL
-creating '/build/reproducible-path/python-smhi-1.0.19/.pybuild/cpython3_3.12/.tmp-n5f0jjqg/smhi_pkg-1.0.19-py3-none-any.whl' and adding 'build/bdist.linux-armv7l/wheel' to it
+creating '/build/reproducible-path/python-smhi-1.0.19/.pybuild/cpython3_3.12/.tmp-pnirfh9f/smhi_pkg-1.0.19-py3-none-any.whl' and adding 'build/bdist.linux-armv7l/wheel' to it
 adding 'smhi/__init__.py'
 adding 'smhi/smhi_lib.py'
 adding 'smhi/test_smhi_lib.py'
@@ -807,13 +843,13 @@
 ============================= test session starts ==============================
 platform linux -- Python 3.13.1, pytest-8.3.4, pluggy-1.5.0
 rootdir: /build/reproducible-path/python-smhi-1.0.19
-plugins: cov-5.0.0, asyncio-0.25.1, typeguard-4.4.1
+plugins: cov-5.0.0, typeguard-4.4.1, asyncio-0.25.1
 asyncio: mode=Mode.STRICT, asyncio_default_fixture_loop_scope=None
 collected 31 items / 5 deselected / 26 selected
 
 smhi/test_smhi_lib.py ..........................                         [100%]
 
-======================= 26 passed, 5 deselected in 1.05s =======================
+======================= 26 passed, 5 deselected in 1.02s =======================
 I: pybuild base:311: cd /build/reproducible-path/python-smhi-1.0.19/.pybuild/cpython3_3.12/build; python3.12 -m pytest -k "not test_smhi_integration_test and not test_smhi_async_integration_test and not test_smhi_async_get_forecast_integration2 and not test_async_error_from_api"
 /usr/lib/python3/dist-packages/pytest_asyncio/plugin.py:207: PytestDeprecationWarning: The configuration option "asyncio_default_fixture_loop_scope" is unset.
 The event loop scope for asynchronous fixtures will default to the fixture caching scope. Future versions of pytest-asyncio will default the loop scope for asynchronous fixtures to function scope. Set the default fixture loop scope explicitly in order to avoid unexpected behavior in the future. Valid fixture loop scopes are: "function", "class", "module", "package", "session"
@@ -822,13 +858,13 @@
 ============================= test session starts ==============================
 platform linux -- Python 3.12.8, pytest-8.3.4, pluggy-1.5.0
 rootdir: /build/reproducible-path/python-smhi-1.0.19
-plugins: cov-5.0.0, asyncio-0.25.1, typeguard-4.4.1
+plugins: cov-5.0.0, typeguard-4.4.1, asyncio-0.25.1
 asyncio: mode=Mode.STRICT, asyncio_default_fixture_loop_scope=None
 collected 31 items / 5 deselected / 26 selected
 
 smhi/test_smhi_lib.py ..........................                         [100%]
 
-======================= 26 passed, 5 deselected in 1.14s =======================
+======================= 26 passed, 5 deselected in 1.12s =======================
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=pybuild
    dh_prep -O--buildsystem=pybuild
@@ -857,12 +893,14 @@
 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/18590/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/18590/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/32230 and its subdirectories
-I: Current time: Tue Jan 21 11:20:37 -12 2025
-I: pbuilder-time-stamp: 1737501637
+I: removing directory /srv/workspace/pbuilder/18590 and its subdirectories
+I: Current time: Wed Jan 22 13:23:05 +14 2025
+I: pbuilder-time-stamp: 1737501785