Diff of the two buildlogs:

--
--- b1/build.log	2025-03-07 13:20:20.269246413 +0000
+++ b2/build.log	2025-03-07 13:21:25.802288715 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Fri Mar  7 01:18:31 -12 2025
-I: pbuilder-time-stamp: 1741353511
+I: Current time: Fri Apr 10 09:43:20 +14 2026
+I: pbuilder-time-stamp: 1775763800
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -21,54 +21,86 @@
 dpkg-source: info: unpacking debci_3.12.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/40499/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/80343/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos16-i386.
+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 Apr  9 19:43 /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/80343/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/80343/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='i386'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=11 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='i386'
+  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]="i686-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=i386
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=21 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=i686
+  HOST_ARCH=i386
   IFS=' 	
   '
-  INVOCATION_ID='29ca8a16c4c64acbad75fb8072da2fca'
-  LANG='C'
-  LANGUAGE='en_US:en'
-  LC_ALL='C'
-  LD_LIBRARY_PATH='/usr/lib/libeatmydata'
-  LD_PRELOAD='libeatmydata.so'
-  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='40499'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=82a08a4f84e041c3970bf84ae912e888
+  LANG=C
+  LANGUAGE=de_CH:de
+  LC_ALL=C
+  LD_LIBRARY_PATH=/usr/lib/libeatmydata
+  LD_PRELOAD=libeatmydata.so
+  MACHTYPE=i686-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=80343
   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.7qYeU5ap/pbuilderrc_ZIZS --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.7qYeU5ap/b1 --logfile b1/build.log debci_3.12.dsc'
-  SUDO_GID='112'
-  SUDO_UID='107'
-  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.7qYeU5ap/pbuilderrc_dQ7O --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.7qYeU5ap/b2 --logfile b2/build.log debci_3.12.dsc'
+  SUDO_GID=112
+  SUDO_UID=107
+  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 ionos12-i386 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 6.1.0-31-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.128-1 (2025-02-07) 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/40499/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/80343/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -415,9 +447,9 @@
 Get: 223 http://deb.debian.org/debian trixie/main i386 shellcheck i386 0.10.0-1 [7542 kB]
 Get: 224 http://deb.debian.org/debian trixie/main i386 shunit2 all 2.1.8-4 [33.9 kB]
 Get: 225 http://deb.debian.org/debian trixie/main i386 yard all 0.9.36-1 [545 kB]
-Fetched 160 MB in 3s (48.8 MB/s)
+Fetched 160 MB in 3s (51.8 MB/s)
 Preconfiguring packages ...
-/var/cache/debconf/tmp.ci/postgresql.config.sT6cbl: 12: pg_lsclusters: not found
+/var/cache/debconf/tmp.ci/postgresql.config.Ms6Swa: line 12: pg_lsclusters: command not found
 Selecting previously unselected package libsystemd-shared:i386.
 (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 ... 19787 files and directories currently installed.)
 Preparing to unpack .../libsystemd-shared_257.3-1_i386.deb ...
@@ -1166,8 +1198,8 @@
 Setting up tzdata (2025a-2) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Fri Mar  7 13:19:23 UTC 2025.
-Universal Time is now:  Fri Mar  7 13:19:23 UTC 2025.
+Local time is now:      Thu Apr  9 19:43:54 UTC 2026.
+Universal Time is now:  Thu Apr  9 19:43:54 UTC 2026.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up ruby-minitest (5.25.4-2) ...
@@ -1331,7 +1363,7 @@
 selecting dynamic shared memory implementation ... posix
 selecting default "max_connections" ... 100
 selecting default "shared_buffers" ... 128MB
-selecting default time zone ... /usr/share/zoneinfo/Etc/GMT+12
+selecting default time zone ... /usr/share/zoneinfo/Etc/GMT-14
 creating configuration files ... ok
 running bootstrap script ... ok
 performing post-bootstrap initialization ... ok
@@ -1416,7 +1448,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/debci-3.12/ && 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  > ../debci_3.12_source.changes
+I: user script /srv/workspace/pbuilder/80343/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/80343/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/debci-3.12/ && 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  > ../debci_3.12_source.changes
 dpkg-buildpackage: info: source package debci
 dpkg-buildpackage: info: source version 3.12
 dpkg-buildpackage: info: source distribution unstable
@@ -1427,7 +1463,7 @@
  debian/rules clean
 dh clean
    dh_auto_clean
-	make -j11 clean
+	make -j21 clean
 make[1]: Entering directory '/build/reproducible-path/debci-3.12'
 rm -f -rf  tags public/doc links.mk public/jquery.flot.time.js public/jquery.js public/jquery.flot.stack.js public/jquery.flot.js public/font-awesome public/bootstrap man/
 make[1]: Leaving directory '/build/reproducible-path/debci-3.12'
@@ -1438,31 +1474,31 @@
    dh_autoreconf
    dh_auto_configure
    dh_auto_build
-	make -j11 "INSTALL=install --strip-program=true"
+	make -j21 "INSTALL=install --strip-program=true"
 make[1]: Entering directory '/build/reproducible-path/debci-3.12'
 awk '{ print("LINKS +=", $1); print($1, ":"); print("\ttest -e ", $2); print("\tmkdir -p $(shell dirname ", $1, ")"); print("\tln -sf", $2, $1)}' links > links.mk
 rm -f public/doc/js/jquery.js
 mkdir -p public/doc
 yardoc --markup markdown --output-dir public/doc --main README.md lib - README.md docs/HACKING.md docs/INSTALL.md docs/MAINTAINERS.md docs/TUTORIAL.md lib/debci.rb lib/debci/admin.rb lib/debci/amqp.rb lib/debci/api.rb lib/debci/app.rb lib/debci/auth_app.rb lib/debci/backend.rb lib/debci/collector.rb lib/debci/config.rb lib/debci/data.rb lib/debci/db.rb lib/debci/db/migrations/201712290143_create_jobs.rb lib/debci/db/migrations/201803101326_create_keys.rb lib/debci/db/migrations/20180809232852_complete_job_fields.rb lib/debci/db/migrations/20190905140000_increase_job_version.rb lib/debci/db/migrations/20191123000000_set_job_date.rb lib/debci/db/migrations/20200326000000_add_indexes.rb lib/debci/db/migrations/20200421000000_create_packages.rb lib/debci/db/migrations/20200427000000_create_package_status.rb lib/debci/db/migrations/20200515000000_create_users.rb lib/debci/db/migrations/20210430000000_add_backend_to_packages.rb lib/debci/db/migrations/20210501000000_add_removed_to_packages.rb lib/debci/db/migrations/20210605000000_add_uid_to_users.rb lib/debci/db/migrations/20210612000000_add_requestor_id_to_jobs.rb lib/debci/db/migrations/20210626000000_add_is_private_to_jobs.rb lib/debci/db/migrations/20210626000001_index_jobs_package_id.rb lib/debci/db/migrations/20210627000000_index_jobs_requestor_id.rb lib/debci/db/migrations/20210706000000_add_extra_apt_sources_to_jobs.rb lib/debci/db/migrations/20211227000000_create_workers.rb lib/debci/db/migrations/20221023000000_add_file_sizes_to_jobs.rb lib/debci/db/migrations/20230311000000_add_requested_backend_to_jobs.rb lib/debci/db/migrations/20230415000000_add_description_to_tokens.rb lib/debci/db/migrations/20230808000000_add_files_purged_to_jobs.rb lib/debci/db/migrations/20231214000000_index_job_date.rb lib/debci/db/migrations/20240903000000_package_storage_limit.rb lib/debci/expiration.rb lib/debci/extra_apt_source.rb lib/debci/extra_apt_sources_list.rb lib/debci/feed.rb lib/debci/feeds.rb lib/debci/frontend.rb lib/debci/graph.rb lib/debci/home.rb lib/debci/html.rb lib/debci/html/cli.rb lib/debci/html_helpers.rb lib/debci/job.rb lib/debci/key.rb lib/debci/log.rb lib/debci/package.rb lib/debci/package_status.rb lib/debci/reject_list.rb lib/debci/self_service.rb lib/debci/status.rb lib/debci/storage_limit.rb lib/debci/test/duration.rb lib/debci/test/paths.rb lib/debci/test_handler.rb lib/debci/user.rb lib/debci/validators.rb lib/debci/worker.rb
 test -e  /usr/share/javascript/jquery-flot/jquery.flot.time.min.js
-mkdir -p public
 test -e  /usr/share/javascript/jquery/jquery.min.js
 mkdir -p public
 ln -sf /usr/share/javascript/jquery-flot/jquery.flot.time.min.js public/jquery.flot.time.js
+mkdir -p public
 test -e  /usr/share/javascript/jquery-flot/jquery.flot.stack.min.js
 ln -sf /usr/share/javascript/jquery/jquery.min.js public/jquery.js
-mkdir -p public
 test -e  /usr/share/javascript/jquery-flot/jquery.flot.min.js
+mkdir -p public
 ln -sf /usr/share/javascript/jquery-flot/jquery.flot.stack.min.js public/jquery.flot.stack.js
 mkdir -p public
 test -e  /usr/share/fonts-font-awesome
 ln -sf /usr/share/javascript/jquery-flot/jquery.flot.min.js public/jquery.flot.js
-mkdir -p public
 test -e  /usr/share/javascript/bootstrap
-mkdir man
-ln -sf /usr/share/fonts-font-awesome public/font-awesome
 mkdir -p public
+mkdir man
 cp docs/architecture.svg public/doc/
+mkdir -p public
+ln -sf /usr/share/fonts-font-awesome public/font-awesome
 pod2man --center "" --release "" --section=1 --utf8 bin/debci man/debci.1
 ln -sf /usr/share/javascript/bootstrap public/bootstrap
 Files:          61
@@ -1488,7 +1524,7 @@
 rspec --color
 .................................................................................................................................................................................................................................................................................................................................................................................................................................
 
-Finished in 5.25 seconds (files took 6.53 seconds to load)
+Finished in 3.13 seconds (files took 3 seconds to load)
 417 examples, 0 failures
 
 make[2]: Leaving directory '/build/reproducible-path/debci-3.12'
@@ -1541,12 +1577,14 @@
 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/80343/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/80343/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/40499 and its subdirectories
-I: Current time: Fri Mar  7 01:20:19 -12 2025
-I: pbuilder-time-stamp: 1741353619
+I: removing directory /srv/workspace/pbuilder/80343 and its subdirectories
+I: Current time: Fri Apr 10 09:44:23 +14 2026
+I: pbuilder-time-stamp: 1775763863