Diff of the two buildlogs:

--
--- b1/build.log	2025-03-10 01:51:00.195061725 +0000
+++ b2/build.log	2025-03-10 01:53:59.566985953 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Mar  9 13:44:33 -12 2025
-I: pbuilder-time-stamp: 1741571073
+I: Current time: Sun Apr 12 22:14:02 +14 2026
+I: pbuilder-time-stamp: 1775981642
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -33,52 +33,84 @@
 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/2991392/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/3821513/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 Apr 12 08:14 /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/3821513/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/3821513/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='9898a9bd380e4e939182c7a2f877380e'
-  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='2991392'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=cd87891c703e49a984263aea1dd74eb4
+  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=3821513
   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.ybH2oYWx/pbuilderrc_zMju --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.ybH2oYWx/b1 --logfile b1/build.log yard_0.9.37-1.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.ybH2oYWx/pbuilderrc_ZJTR --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.ybH2oYWx/b2 --logfile b2/build.log yard_0.9.37-1.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 6.12.12+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.12-1~bpo12+1 (2025-02-23) 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/2991392/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/3821513/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -313,7 +345,7 @@
 Get: 171 http://deb.debian.org/debian trixie/main amd64 ruby-rspec-expectations all 3.13.0c0e0m0s1-2 [90.2 kB]
 Get: 172 http://deb.debian.org/debian trixie/main amd64 ruby-rspec-mocks all 3.13.0c0e0m0s1-2 [81.3 kB]
 Get: 173 http://deb.debian.org/debian trixie/main amd64 ruby-rspec all 3.13.0c0e0m0s1-2 [5184 B]
-Fetched 51.9 MB in 2s (29.9 MB/s)
+Fetched 51.9 MB in 14s (3583 kB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-minimal:amd64.
 (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
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(Reading database ... 20%
(Reading database ... 25%
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(Reading database ... 40%
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(Reading database ... 60%
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(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19800 files and directories currently installed.)
@@ -882,8 +914,8 @@
 Setting up tzdata (2025a-2) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Mon Mar 10 01:46:36 UTC 2025.
-Universal Time is now:  Mon Mar 10 01:46:36 UTC 2025.
+Local time is now:      Sun Apr 12 08:15:27 UTC 2026.
+Universal Time is now:  Sun Apr 12 08:15:27 UTC 2026.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up ruby-minitest (5.25.4-2) ...
@@ -1040,7 +1072,11 @@
 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/3821513/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/3821513/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
@@ -1080,14 +1116,14 @@
 │ yard: Installing files and building extensions for ruby3.3                   │
 └──────────────────────────────────────────────────────────────────────────────┘
 
-/usr/bin/ruby3.3 -S gem build --config-file /dev/null --verbose /tmp/d20250309-3020805-874skc/gemspec
+/usr/bin/ruby3.3 -S gem build --config-file /dev/null --verbose /tmp/d20260412-3899141-3fjjww/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/d20250309-3020805-874skc/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/d20260412-3899141-3fjjww/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
@@ -4183,31 +4219,31 @@
      # Missing markup renderer markdown
      # ./spec/templates/markup_processor_integrations/markdown_spec.rb:95
 
-Top 5 slowest examples (10.06 seconds, 29.7% of total time):
+Top 5 slowest examples (3.14 seconds, 31.4% of total time):
   YARD::RegistryStore#save never saves as single object db if single_object_db is false
-    7.32 seconds ./spec/registry_store_spec.rb:152
-  YARD::CLI::Display wraps output with -l (defaulting to layout)
-    1.29 seconds ./spec/cli/display_spec.rb:15
+    1.73 seconds ./spec/registry_store_spec.rb:152
+  YARD::CLI::Stats lists undocumented objects in compact mode with --list-undoc --compact
+    0.80174 seconds ./spec/cli/stats_spec.rb:67
   YARD::RegistryStore#save saves as single object db if single_object_db is true (and any amount of objects)
-    0.59116 seconds ./spec/registry_store_spec.rb:144
-  YARD::CLI::Server General options accepts -G, --gemfile
-    0.48485 seconds ./spec/cli/server_spec.rb:265
-  YARD::CLI::Diff File searching searches for gem/.yardoc
-    0.37416 seconds ./spec/cli/diff_spec.rb:177
+    0.23807 seconds ./spec/registry_store_spec.rb:144
+  YARD::CLI::Display wraps output with -l (defaulting to layout)
+    0.21494 seconds ./spec/cli/display_spec.rb:15
+  YARD::Server::Commands::LibraryCommand#call raises NotImplementedError
+    0.1477 seconds ./spec/server/commands/library_command_spec.rb:23
 
 Top 5 slowest example groups:
+  YARD::CLI::Stats
+    0.17774 seconds average (0.8887 seconds / 5 examples) ./spec/cli/stats_spec.rb:4
+  YARD::Server::Commands::LibraryCommand
+    0.1039 seconds average (0.3117 seconds / 3 examples) ./spec/server/commands/library_command_spec.rb:3
   YARD::CLI::Display
-    0.53419 seconds average (1.6 seconds / 3 examples) ./spec/cli/display_spec.rb:3
+    0.08708 seconds average (0.26123 seconds / 3 examples) ./spec/cli/display_spec.rb:3
   YARD::RegistryStore
-    0.25584 seconds average (8.44 seconds / 33 examples) ./spec/registry_store_spec.rb:3
-  YARD::Server::Commands::LibraryCommand
-    0.23065 seconds average (0.69194 seconds / 3 examples) ./spec/server/commands/library_command_spec.rb:3
-  YARD::CLI::Stats
-    0.19183 seconds average (0.95913 seconds / 5 examples) ./spec/cli/stats_spec.rb:4
-  YARD::CLI::Diff
-    0.10958 seconds average (1.42 seconds / 13 examples) ./spec/cli/diff_spec.rb:5
+    0.06237 seconds average (2.06 seconds / 33 examples) ./spec/registry_store_spec.rb:3
+  YARD::Handlers::Ruby::ClassVariableHandler
+    0.04513 seconds average (0.04513 seconds / 1 example) ./spec/handlers/class_variable_handler_spec.rb:4
 
-Finished in 33.83 seconds (files took 8.26 seconds to load)
+Finished in 10 seconds (files took 1.61 seconds to load)
 1946 examples, 0 failures, 10 pending
 
 
@@ -4262,12 +4298,14 @@
 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/3821513/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/3821513/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/2991392 and its subdirectories
-I: Current time: Sun Mar  9 13:50:59 -12 2025
-I: pbuilder-time-stamp: 1741571459
+I: removing directory /srv/workspace/pbuilder/3821513 and its subdirectories
+I: Current time: Sun Apr 12 22:16:56 +14 2026
+I: pbuilder-time-stamp: 1775981816