Diff of the two buildlogs:

--
--- b1/build.log	2025-03-09 00:45:58.247774929 +0000
+++ b2/build.log	2025-03-09 00:47:11.560463696 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sat Mar  8 12:44:00 -12 2025
-I: pbuilder-time-stamp: 1741481040
+I: Current time: Sat Apr 11 21:09:00 +14 2026
+I: pbuilder-time-stamp: 1775891340
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -34,54 +34,86 @@
 dpkg-source: info: applying 0011-locale_spec-skip-test-that-fails-on-ruby3.1-when-not.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/48642/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/52118/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos6-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 11 07:09 /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/52118/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/52118/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='8ef2d0279bf74668805ea284ddfbcbaf'
-  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='48642'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=2e92d848545b420aa5a468a90ea16710
+  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=52118
   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.7GLW4FA2/pbuilderrc_q5Ab --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.7GLW4FA2/b1 --logfile b1/build.log yard_0.9.37-1.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.7GLW4FA2/pbuilderrc_w4bm --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.7GLW4FA2/b2 --logfile b2/build.log yard_0.9.37-1.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/48642/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/52118/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -316,7 +348,7 @@
 Get: 171 http://deb.debian.org/debian trixie/main i386 ruby-rspec-expectations all 3.13.0c0e0m0s1-2 [90.2 kB]
 Get: 172 http://deb.debian.org/debian trixie/main i386 ruby-rspec-mocks all 3.13.0c0e0m0s1-2 [81.3 kB]
 Get: 173 http://deb.debian.org/debian trixie/main i386 ruby-rspec all 3.13.0c0e0m0s1-2 [5184 B]
-Fetched 52.6 MB in 1s (68.4 MB/s)
+Fetched 52.6 MB in 1s (72.7 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-minimal:i386.
 (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
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(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19787 files and directories currently installed.)
@@ -885,8 +917,8 @@
 Setting up tzdata (2025a-2) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Sun Mar  9 00:44:38 UTC 2025.
-Universal Time is now:  Sun Mar  9 00:44:38 UTC 2025.
+Local time is now:      Sat Apr 11 07:09:24 UTC 2026.
+Universal Time is now:  Sat Apr 11 07:09:24 UTC 2026.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up ruby-minitest (5.25.4-2) ...
@@ -1043,7 +1075,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/yard-0.9.37/ && 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  > ../yard_0.9.37-1_source.changes
+I: user script /srv/workspace/pbuilder/52118/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/52118/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/yard-0.9.37/ && 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  > ../yard_0.9.37-1_source.changes
 dpkg-buildpackage: info: source package yard
 dpkg-buildpackage: info: source version 0.9.37-1
 dpkg-buildpackage: info: source distribution unstable
@@ -1083,14 +1119,14 @@
 │ yard: Installing files and building extensions for ruby3.3                   │
 └──────────────────────────────────────────────────────────────────────────────┘
 
-/usr/bin/ruby3.3 -S gem build --config-file /dev/null --verbose /tmp/d20250308-54926-8mq1ku/gemspec
+/usr/bin/ruby3.3 -S gem build --config-file /dev/null --verbose /tmp/d20260411-60363-3aryg5/gemspec
 WARNING:  make sure you specify the oldest ruby version constraint (like ">= 3.0") that you want your gem to support by setting the `required_ruby_version` gemspec attribute
 WARNING:  See https://guides.rubygems.org/specification-reference/ for help
   Successfully built RubyGem
   Name: yard
   Version: 0.9.37
   File: yard-0.9.37.gem
-/usr/bin/ruby3.3 -S gem install --config-file /dev/null --verbose --local --verbose --no-document --ignore-dependencies --install-dir debian/yard/usr/share/rubygems-integration/all /tmp/d20250308-54926-8mq1ku/yard-0.9.37.gem
+/usr/bin/ruby3.3 -S gem install --config-file /dev/null --verbose --local --verbose --no-document --ignore-dependencies --install-dir debian/yard/usr/share/rubygems-integration/all /tmp/d20260411-60363-3aryg5/yard-0.9.37.gem
 /build/reproducible-path/yard-0.9.37/debian/yard/usr/share/rubygems-integration/all/gems/yard-0.9.37/bin/yard
 /build/reproducible-path/yard-0.9.37/debian/yard/usr/share/rubygems-integration/all/gems/yard-0.9.37/bin/yardoc
 /build/reproducible-path/yard-0.9.37/debian/yard/usr/share/rubygems-integration/all/gems/yard-0.9.37/bin/yri
@@ -4186,31 +4222,31 @@
      # Missing markup renderer markdown
      # ./spec/templates/markup_processor_integrations/markdown_spec.rb:95
 
-Top 5 slowest examples (3.37 seconds, 28.5% of total time):
+Top 5 slowest examples (2.21 seconds, 31.4% of total time):
   YARD::RegistryStore#save never saves as single object db if single_object_db is false
-    2.63 seconds ./spec/registry_store_spec.rb:152
+    1.72 seconds ./spec/registry_store_spec.rb:152
   YARD::CLI::Display wraps output with -l (defaulting to layout)
-    0.29524 seconds ./spec/cli/display_spec.rb:15
+    0.1661 seconds ./spec/cli/display_spec.rb:15
   YARD::Server::Commands::LibraryCommand#call raises NotImplementedError
-    0.15625 seconds ./spec/server/commands/library_command_spec.rb:23
-  YARD::Server::Commands::LibraryCommand#call sets :rdoc as the default markup in incremental mode
-    0.14522 seconds ./spec/server/commands/library_command_spec.rb:27
-  YARD::Server::Commands::LibraryCommand#call sets :rdoc as the default markup in regular mode
-    0.14401 seconds ./spec/server/commands/library_command_spec.rb:33
+    0.12131 seconds ./spec/server/commands/library_command_spec.rb:23
+  YARD::Registry Thread local maintains two Registries in separate threads
+    0.10123 seconds ./spec/registry_spec.rb:396
+  YARD::Registry Thread local allows setting of po_dir in separate threads
+    0.1 seconds ./spec/registry_spec.rb:442
 
 Top 5 slowest example groups:
   YARD::Server::Commands::LibraryCommand
-    0.14916 seconds average (0.44749 seconds / 3 examples) ./spec/server/commands/library_command_spec.rb:3
+    0.09335 seconds average (0.28006 seconds / 3 examples) ./spec/server/commands/library_command_spec.rb:3
   YARD::CLI::Display
-    0.11669 seconds average (0.35006 seconds / 3 examples) ./spec/cli/display_spec.rb:3
+    0.07234 seconds average (0.21701 seconds / 3 examples) ./spec/cli/display_spec.rb:3
   YARD::RegistryStore
-    0.0867 seconds average (2.86 seconds / 33 examples) ./spec/registry_store_spec.rb:3
-  YARD::Parser::C::CParser
-    0.05778 seconds average (1.04 seconds / 18 examples) ./spec/parser/c_parser_spec.rb:3
+    0.05551 seconds average (1.83 seconds / 33 examples) ./spec/registry_store_spec.rb:3
   YARD::Templates::Engine::Template__build_reproducible_path_yard_0_9_37_templates_default_module
-    0.0523 seconds average (0.36609 seconds / 7 examples) ./spec/templates/module_spec.rb:4
+    0.03135 seconds average (0.21946 seconds / 7 examples) ./spec/templates/module_spec.rb:4
+  YARD::Parser::C::CParser
+    0.03041 seconds average (0.54731 seconds / 18 examples) ./spec/parser/c_parser_spec.rb:3
 
-Finished in 11.82 seconds (files took 1.67 seconds to load)
+Finished in 7.03 seconds (files took 0.91051 seconds to load)
 1946 examples, 0 failures, 10 pending
 
 
@@ -4256,8 +4292,8 @@
 dpkg-gencontrol: warning: Depends field of package yard: substitution variable ${shlibs:Depends} used, but is not defined
    dh_md5sums -O--buildsystem=ruby
    dh_builddeb -O--buildsystem=ruby
-dpkg-deb: building package 'yard-doc' in '../yard-doc_0.9.37-1_all.deb'.
 dpkg-deb: building package 'yard' in '../yard_0.9.37-1_all.deb'.
+dpkg-deb: building package 'yard-doc' in '../yard-doc_0.9.37-1_all.deb'.
  dpkg-genbuildinfo --build=binary -O../yard_0.9.37-1_i386.buildinfo
  dpkg-genchanges --build=binary -O../yard_0.9.37-1_i386.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -4265,12 +4301,14 @@
 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/52118/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/52118/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/48642 and its subdirectories
-I: Current time: Sat Mar  8 12:45:57 -12 2025
-I: pbuilder-time-stamp: 1741481157
+I: removing directory /srv/workspace/pbuilder/52118 and its subdirectories
+I: Current time: Sat Apr 11 21:10:09 +14 2026
+I: pbuilder-time-stamp: 1775891409