Diff of the two buildlogs:

--
--- b1/build.log	2025-02-19 07:55:02.486150177 +0000
+++ b2/build.log	2025-02-19 07:57:06.528544408 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Tue Feb 18 19:48:38 -12 2025
-I: pbuilder-time-stamp: 1739951318
+I: Current time: Wed Feb 19 21:55:11 +14 2025
+I: pbuilder-time-stamp: 1739951711
 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 pydiscovergy_3.0.2-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/8150/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/4555/tmp/hooks/D01_modify_environment starting
+debug: Running on virt64z.
+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 Feb 19 07:55 /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/4555/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/4555/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='7f870832d2714876b312d30f584895df'
-  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='8150'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=1c7895e3f9bb47a2bb6bf6768651b2aa
+  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=4555
   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.9Hwq7LdT/pbuilderrc_RYVZ --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.9Hwq7LdT/b1 --logfile b1/build.log pydiscovergy_3.0.2-1.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.9Hwq7LdT/pbuilderrc_Fn8v --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.9Hwq7LdT/b2 --logfile b2/build.log pydiscovergy_3.0.2-1.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 ff4a 6.1.0-31-armmp-lpae #1 SMP Debian 6.1.128-1 (2025-02-07) armv7l GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-31-arm64 #1 SMP Debian 6.1.128-1 (2025-02-07) aarch64 GNU/Linux
 I: ls -l /bin
   lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/8150/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/4555/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -246,7 +278,7 @@
 Get: 117 http://deb.debian.org/debian trixie/main armhf python3-pytest-cov all 5.0.0-1 [26.8 kB]
 Get: 118 http://deb.debian.org/debian trixie/main armhf python3-pytest-httpx all 0.34.0-1 [30.1 kB]
 Get: 119 http://deb.debian.org/debian trixie/main armhf python3-respx all 0.21.1-2 [25.6 kB]
-Fetched 40.6 MB in 3s (11.8 MB/s)
+Fetched 40.6 MB in 4s (11.2 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-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 ... 19534 files and directories currently installed.)
@@ -640,8 +672,8 @@
 Setting up tzdata (2024b-6) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Wed Feb 19 07:50:39 UTC 2025.
-Universal Time is now:  Wed Feb 19 07:50:39 UTC 2025.
+Local time is now:      Wed Feb 19 07:55:54 UTC 2025.
+Universal Time is now:  Wed Feb 19 07:55:54 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -758,7 +790,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/pydiscovergy-3.0.2/ && 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  > ../pydiscovergy_3.0.2-1_source.changes
+I: user script /srv/workspace/pbuilder/4555/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/4555/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/pydiscovergy-3.0.2/ && 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  > ../pydiscovergy_3.0.2-1_source.changes
 dpkg-buildpackage: info: source package pydiscovergy
 dpkg-buildpackage: info: source version 3.0.2-1
 dpkg-buildpackage: info: source distribution unstable
@@ -800,14 +836,14 @@
 platform linux -- Python 3.12.9, pytest-8.3.4, pluggy-1.5.0
 rootdir: /build/reproducible-path/pydiscovergy-3.0.2/.pybuild/cpython3_3.12_pydiscovergy/build
 configfile: pyproject.toml
-plugins: respx-0.21.1, cov-5.0.0, typeguard-4.4.1, anyio-4.7.0, asyncio-0.25.1, httpx-0.34.0
+plugins: httpx-0.34.0, asyncio-0.25.1, typeguard-4.4.1, cov-5.0.0, anyio-4.7.0, respx-0.21.1
 asyncio: mode=Mode.AUTO, asyncio_default_fixture_loop_scope=None
 collected 17 items
 
 tests/test_discovergy.py ...........                                     [ 64%]
 tests/test_token.py ......                                               [100%]
 
-============================== 17 passed in 8.76s ==============================
+============================== 17 passed in 2.47s ==============================
 I: pybuild base:311: cd /build/reproducible-path/pydiscovergy-3.0.2/.pybuild/cpython3_3.13_pydiscovergy/build; python3.13 -m pytest --no-cov
 /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"
@@ -817,7 +853,7 @@
 platform linux -- Python 3.13.2, pytest-8.3.4, pluggy-1.5.0
 rootdir: /build/reproducible-path/pydiscovergy-3.0.2/.pybuild/cpython3_3.13_pydiscovergy/build
 configfile: pyproject.toml
-plugins: respx-0.21.1, cov-5.0.0, typeguard-4.4.1, anyio-4.7.0, asyncio-0.25.1, httpx-0.34.0
+plugins: httpx-0.34.0, asyncio-0.25.1, typeguard-4.4.1, cov-5.0.0, anyio-4.7.0, respx-0.21.1
 asyncio: mode=Mode.AUTO, asyncio_default_fixture_loop_scope=None
 collected 17 items
 
@@ -838,7 +874,7 @@
     return typ._evaluate(
 
 -- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
-======================== 17 passed, 9 warnings in 8.76s ========================
+======================== 17 passed, 9 warnings in 2.49s ========================
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=pybuild
    dh_prep -O--buildsystem=pybuild
@@ -867,12 +903,14 @@
 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/4555/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/4555/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/8150 and its subdirectories
-I: Current time: Tue Feb 18 19:54:58 -12 2025
-I: pbuilder-time-stamp: 1739951698
+I: removing directory /srv/workspace/pbuilder/4555 and its subdirectories
+I: Current time: Wed Feb 19 21:57:02 +14 2025
+I: pbuilder-time-stamp: 1739951822