Diff of the two buildlogs:

--
--- b1/build.log	2025-03-10 00:14:08.225090248 +0000
+++ b2/build.log	2025-03-10 00:15:18.917908671 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Mar  9 12:12:15 -12 2025
-I: pbuilder-time-stamp: 1741565535
+I: Current time: Sun Apr 12 20:37:07 +14 2026
+I: pbuilder-time-stamp: 1775975827
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -25,52 +25,84 @@
 dpkg-source: info: applying rails-7.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3498257/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/3870862/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos5-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 06:37 /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/3870862/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/3870862/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='unstable'
-  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=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='df8491b8e7be4e569545e98ea2f8d119'
-  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='3498257'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=883632c568b1420d85ee62622b56e64b
+  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=3870862
   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.3NLB5R2s/pbuilderrc_BCoG --distribution unstable --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.3NLB5R2s/b1 --logfile b1/build.log ruby-globalid_1.2.1-2.dsc'
-  SUDO_GID='111'
-  SUDO_UID='106'
-  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.3NLB5R2s/pbuilderrc_i3E4 --distribution unstable --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.3NLB5R2s/b2 --logfile b2/build.log ruby-globalid_1.2.1-2.dsc'
+  SUDO_GID=110
+  SUDO_UID=105
+  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 ionos11-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 Mar  4 11:20 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3498257/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/3870862/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -295,7 +327,7 @@
 Get: 179 http://deb.debian.org/debian unstable/main amd64 ruby-sprockets all 4.2.1-3 [74.1 kB]
 Get: 180 http://deb.debian.org/debian unstable/main amd64 ruby-sprockets-rails all 3.5.2-2 [15.0 kB]
 Get: 181 http://deb.debian.org/debian unstable/main amd64 ruby-rails all 2:7.2.2.1+dfsg-2 [26.3 kB]
-Fetched 52.4 MB in 9s (5693 kB/s)
+Fetched 52.4 MB in 7s (7061 kB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-minimal:amd64.
 (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 ... 19783 files and directories currently installed.)
@@ -888,8 +920,8 @@
 Setting up tzdata (2025a-2) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Mon Mar 10 00:13:41 UTC 2025.
-Universal Time is now:  Mon Mar 10 00:13:41 UTC 2025.
+Local time is now:      Sun Apr 12 06:37:50 UTC 2026.
+Universal Time is now:  Sun Apr 12 06:37:50 UTC 2026.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up ruby-websocket-extensions (0.1.5-2) ...
@@ -1054,7 +1086,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/ruby-globalid-1.2.1/ && 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  > ../ruby-globalid_1.2.1-2_source.changes
+I: user script /srv/workspace/pbuilder/3870862/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/3870862/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/ruby-globalid-1.2.1/ && 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  > ../ruby-globalid_1.2.1-2_source.changes
 dpkg-buildpackage: info: source package ruby-globalid
 dpkg-buildpackage: info: source version 1.2.1-2
 dpkg-buildpackage: info: source distribution unstable
@@ -1087,7 +1123,7 @@
 │ ruby-globalid: Installing files and building extensions for ruby3.3          │
 └──────────────────────────────────────────────────────────────────────────────┘
 
-/usr/bin/ruby3.3 -S gem build --config-file /dev/null --verbose /tmp/d20250309-3529397-d48zh/gemspec
+/usr/bin/ruby3.3 -S gem build --config-file /dev/null --verbose /tmp/d20260412-3880441-yyfpbx/gemspec
 WARNING:  open-ended dependency on activesupport (>= 6.1) is not recommended
   if activesupport is semantically versioned, use:
     add_runtime_dependency "activesupport", "~> 6.1"
@@ -1098,7 +1134,7 @@
   Name: globalid
   Version: 1.2.1
   File: globalid-1.2.1.gem
-/usr/bin/ruby3.3 -S gem install --config-file /dev/null --verbose --local --verbose --no-document --ignore-dependencies --install-dir debian/ruby-globalid/usr/share/rubygems-integration/all /tmp/d20250309-3529397-d48zh/globalid-1.2.1.gem
+/usr/bin/ruby3.3 -S gem install --config-file /dev/null --verbose --local --verbose --no-document --ignore-dependencies --install-dir debian/ruby-globalid/usr/share/rubygems-integration/all /tmp/d20260412-3880441-yyfpbx/globalid-1.2.1.gem
 /build/reproducible-path/ruby-globalid-1.2.1/debian/ruby-globalid/usr/share/rubygems-integration/all/gems/globalid-1.2.1/lib/global_id.rb
 /build/reproducible-path/ruby-globalid-1.2.1/debian/ruby-globalid/usr/share/rubygems-integration/all/gems/globalid-1.2.1/lib/global_id/fixture_set.rb
 /build/reproducible-path/ruby-globalid-1.2.1/debian/ruby-globalid/usr/share/rubygems-integration/all/gems/globalid-1.2.1/lib/global_id/global_id.rb
@@ -1143,13 +1179,13 @@
 mv Gemfile.lock ./.gem2deb.Gemfile.lock
 /usr/bin/ruby3.3 -w -I"lib:test" /usr/share/rubygems-integration/all/gems/rake-13.2.1/lib/rake/rake_test_loader.rb "test/cases/global_id_test.rb" "test/cases/global_identification_test.rb" "test/cases/global_locator_test.rb" "test/cases/pattern_matching_test.rb" "test/cases/railtie_test.rb" "test/cases/signed_global_id_test.rb" "test/cases/uri_gid_test.rb" "test/cases/verifier_test.rb" 
 /build/reproducible-path/ruby-globalid-1.2.1/test/cases/global_locator_test.rb:375: warning: assigned but unused variable - model2
-Run options: --seed 27616
+Run options: --seed 37740
 
 # Running:
 
 .....................................................................................................................................................SS.....
 
-Finished in 0.748310s, 208.4698 runs/s, 410.2579 assertions/s.
+Finished in 0.438212s, 355.9921 runs/s, 700.5742 assertions/s.
 
 156 runs, 307 assertions, 0 failures, 0 errors, 2 skips
 
@@ -1187,12 +1223,14 @@
 dpkg-buildpackage: info: binary-only upload (no source included)
 dpkg-genchanges: info: not including original source code in upload
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/3870862/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/3870862/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/3498257 and its subdirectories
-I: Current time: Sun Mar  9 12:14:07 -12 2025
-I: pbuilder-time-stamp: 1741565647
+I: removing directory /srv/workspace/pbuilder/3870862 and its subdirectories
+I: Current time: Sun Apr 12 20:38:15 +14 2026
+I: pbuilder-time-stamp: 1775975895