Diff of the two buildlogs:

--
--- b1/build.log	2025-03-24 11:52:25.544260160 +0000
+++ b2/build.log	2025-03-24 11:53:52.468359599 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Apr 26 06:14:42 -12 2026
-I: pbuilder-time-stamp: 1777227282
+I: Current time: Tue Mar 25 01:52:30 +14 2025
+I: pbuilder-time-stamp: 1742817150
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -28,54 +28,86 @@
 dpkg-source: info: applying 0004-Use-tested-ruby-version-to-run-script-in-tests.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/19913/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/13912/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos2-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 Mar 24 11:52 /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/13912/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/13912/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=22 '
-  DISTRIBUTION='unstable'
-  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=10 '
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=i686
+  HOST_ARCH=i386
   IFS=' 	
   '
-  INVOCATION_ID='36197f25c9a4453a9ed2362717acd6b7'
-  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='19913'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=ac430a80e2174650889464580a34fe79
+  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=13912
   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.lIdgBSAe/pbuilderrc_cNe6 --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.lIdgBSAe/b1 --logfile b1/build.log ruby-slim_5.2.1-1.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://213.165.73.152:3128'
+  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.lIdgBSAe/pbuilderrc_lQpf --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.lIdgBSAe/b2 --logfile b2/build.log ruby-slim_5.2.1-1.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://46.16.76.132:3128
 I: uname -a
-  Linux ionos6-i386 6.1.0-32-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.129-1 (2025-03-06) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-32-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.129-1 (2025-03-06) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/19913/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4 11:20 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/13912/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -278,7 +310,7 @@
 Get: 143 http://deb.debian.org/debian unstable/main i386 ruby-sass all 3.7.4-6 [224 kB]
 Get: 144 http://deb.debian.org/debian unstable/main i386 ruby-temple all 0.10.3-2 [31.1 kB]
 Get: 145 http://deb.debian.org/debian unstable/main i386 ruby-tilt all 2.4.0-3 [32.2 kB]
-Fetched 50.7 MB in 0s (109 MB/s)
+Fetched 50.7 MB in 1s (44.5 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-minimal: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 ... 19793 files and directories currently installed.)
@@ -759,8 +791,8 @@
 Setting up tzdata (2025b-1) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Sun Apr 26 18:15:03 UTC 2026.
-Universal Time is now:  Sun Apr 26 18:15:03 UTC 2026.
+Local time is now:      Mon Mar 24 11:53:12 UTC 2025.
+Universal Time is now:  Mon Mar 24 11:53:12 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up ruby-minitest (5.25.4-2) ...
@@ -893,7 +925,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/ruby-slim-5.2.1/ && 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-slim_5.2.1-1_source.changes
+I: user script /srv/workspace/pbuilder/13912/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/13912/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/ruby-slim-5.2.1/ && 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-slim_5.2.1-1_source.changes
 dpkg-buildpackage: info: source package ruby-slim
 dpkg-buildpackage: info: source version 5.2.1-1
 dpkg-buildpackage: info: source distribution unstable
@@ -926,7 +962,7 @@
 │ ruby-slim: Installing files and building extensions for ruby3.3              │
 └──────────────────────────────────────────────────────────────────────────────┘
 
-/usr/bin/ruby3.3 -S gem build --config-file /dev/null --verbose /tmp/d20260426-24974-6f612u/gemspec
+/usr/bin/ruby3.3 -S gem build --config-file /dev/null --verbose /tmp/d20250325-23218-s2ppm8/gemspec
 WARNING:  open-ended dependency on tilt (>= 2.1.0) is not recommended
   if tilt is semantically versioned, use:
     add_runtime_dependency "tilt", "~> 2.1", ">= 2.1.0"
@@ -935,7 +971,7 @@
   Name: slim
   Version: 5.2.1
   File: slim-5.2.1.gem
-/usr/bin/ruby3.3 -S gem install --config-file /dev/null --verbose --local --verbose --no-document --ignore-dependencies --install-dir debian/ruby-slim/usr/share/rubygems-integration/all /tmp/d20260426-24974-6f612u/slim-5.2.1.gem
+/usr/bin/ruby3.3 -S gem install --config-file /dev/null --verbose --local --verbose --no-document --ignore-dependencies --install-dir debian/ruby-slim/usr/share/rubygems-integration/all /tmp/d20250325-23218-s2ppm8/slim-5.2.1.gem
 /build/reproducible-path/ruby-slim-5.2.1/debian/ruby-slim/usr/share/rubygems-integration/all/gems/slim-5.2.1/bin/slimrb
 /build/reproducible-path/ruby-slim-5.2.1/debian/ruby-slim/usr/share/rubygems-integration/all/gems/slim-5.2.1/lib/slim.rb
 /build/reproducible-path/ruby-slim-5.2.1/debian/ruby-slim/usr/share/rubygems-integration/all/gems/slim-5.2.1/lib/slim/code_attributes.rb
@@ -1002,31 +1038,31 @@
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:40: warning: possibly useless use of | in void context
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:46: warning: possibly useless use of | in void context
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:52: warning: possibly useless use of | in void context
-Run options: --seed 62201
+Run options: --seed 62863
 
 # Running:
 
-.............(__TEMPLATE__):4: warning: possibly useless use of a variable in void context
-..........................................................................................(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
+.(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
 .(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
 (__TEMPLATE__):3: warning: possibly useless use of a variable in void context
-..(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
+....(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
+....(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
+......(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
 (__TEMPLATE__):4: warning: possibly useless use of a variable in void context
 (__TEMPLATE__):5: warning: possibly useless use of a variable in void context
-.(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
-...........(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
-.......................................................................................................(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
-..............(__TEMPLATE__):3: warning: assigned but unused variable - a
-...(__TEMPLATE__):3: warning: assigned but unused variable - test
-../usr/share/rubygems-integration/all/gems/kramdown-2.5.1/lib/kramdown/parser/base.rb:60: warning: character class has duplicated range: /[\s\p{Z}]+/
-.(__TEMPLATE__):8: warning: assigned but unused variable - b
+....................................(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
+...................................(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
+.......(__TEMPLATE__):1: warning: possibly useless use of a variable in void context
+...(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
+........(__TEMPLATE__):8: warning: assigned but unused variable - b
 (__TEMPLATE__):12: warning: assigned but unused variable - c
-.......................................(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
-...............(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
-...(__TEMPLATE__):1: warning: possibly useless use of a variable in void context
-.......
+....(__TEMPLATE__):3: warning: assigned but unused variable - test
+....../usr/share/rubygems-integration/all/gems/kramdown-2.5.1/lib/kramdown/parser/base.rb:60: warning: character class has duplicated range: /[\s\p{Z}]+/
+..(__TEMPLATE__):3: warning: assigned but unused variable - a
+.......................................................................................................................(__TEMPLATE__):4: warning: possibly useless use of a variable in void context
+.....................................................................
 
-Finished in 8.012371s, 38.0661 runs/s, 66.3973 assertions/s.
+Finished in 13.308440s, 22.9178 runs/s, 39.9746 assertions/s.
 
 305 runs, 532 assertions, 0 failures, 0 errors, 0 skips
 /build/reproducible-path/ruby-slim-5.2.1/lib/slim/grammar.rb:8: warning: possibly useless use of | in void context
@@ -1035,15 +1071,15 @@
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:40: warning: possibly useless use of | in void context
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:46: warning: possibly useless use of | in void context
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:52: warning: possibly useless use of | in void context
-Run options: --seed 7439
+Run options: --seed 36207
 
 # Running:
 
-...........................................................(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
+......................................................(__TEMPLATE__):2: warning: possibly useless use of a variable in void context
 (__TEMPLATE__):3: warning: possibly useless use of a variable in void context
-...........
+................
 
-Finished in 0.249977s, 280.0254 runs/s, 280.0254 assertions/s.
+Finished in 0.413880s, 169.1313 runs/s, 169.1313 assertions/s.
 
 70 runs, 70 assertions, 0 failures, 0 errors, 0 skips
 /build/reproducible-path/ruby-slim-5.2.1/lib/slim/grammar.rb:8: warning: possibly useless use of | in void context
@@ -1052,14 +1088,14 @@
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:40: warning: possibly useless use of | in void context
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:46: warning: possibly useless use of | in void context
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:52: warning: possibly useless use of | in void context
-Run options: --seed 53932
+Run options: --seed 55277
 
 # Running:
 
-.............(__TEMPLATE__):6: warning: possibly useless use of a variable in void context
-........
+...................(__TEMPLATE__):6: warning: possibly useless use of a variable in void context
+..
 
-Finished in 0.087213s, 240.7904 runs/s, 240.7904 assertions/s.
+Finished in 0.151868s, 138.2778 runs/s, 138.2778 assertions/s.
 
 21 runs, 21 assertions, 0 failures, 0 errors, 0 skips
 /build/reproducible-path/ruby-slim-5.2.1/lib/slim/grammar.rb:8: warning: possibly useless use of | in void context
@@ -1068,14 +1104,14 @@
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:40: warning: possibly useless use of | in void context
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:46: warning: possibly useless use of | in void context
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:52: warning: possibly useless use of | in void context
-/usr/share/rubygems-integration/all/gems/kramdown-2.5.1/lib/kramdown/parser/base.rb:60: warning: character class has duplicated range: /[\s\p{Z}]+/
-Run options: --seed 33697
+Run options: --seed 15334
 
 # Running:
 
-....
+../usr/share/rubygems-integration/all/gems/kramdown-2.5.1/lib/kramdown/parser/base.rb:60: warning: character class has duplicated range: /[\s\p{Z}]+/
+..
 
-Finished in 0.150065s, 26.6550 runs/s, 59.9738 assertions/s.
+Finished in 0.230022s, 17.3897 runs/s, 39.1268 assertions/s.
 
 4 runs, 9 assertions, 0 failures, 0 errors, 0 skips
 /build/reproducible-path/ruby-slim-5.2.1/lib/slim/grammar.rb:8: warning: possibly useless use of | in void context
@@ -1084,13 +1120,13 @@
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:40: warning: possibly useless use of | in void context
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:46: warning: possibly useless use of | in void context
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:52: warning: possibly useless use of | in void context
-Run options: --seed 10598
+Run options: --seed 36153
 
 # Running:
 
 ...........
 
-Finished in 0.071872s, 153.0504 runs/s, 153.0504 assertions/s.
+Finished in 0.141460s, 77.7604 runs/s, 77.7604 assertions/s.
 
 11 runs, 11 assertions, 0 failures, 0 errors, 0 skips
 /build/reproducible-path/ruby-slim-5.2.1/lib/slim/grammar.rb:8: warning: possibly useless use of | in void context
@@ -1099,13 +1135,13 @@
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:40: warning: possibly useless use of | in void context
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:46: warning: possibly useless use of | in void context
 /usr/share/rubygems-integration/all/gems/temple-0.10.3/lib/temple/grammar.rb:52: warning: possibly useless use of | in void context
-Run options: --seed 23618
+Run options: --seed 24228
 
 # Running:
 
 ..
 
-Finished in 0.033975s, 58.8674 runs/s, 58.8674 assertions/s.
+Finished in 0.068872s, 29.0395 runs/s, 29.0395 assertions/s.
 
 2 runs, 2 assertions, 0 failures, 0 errors, 0 skips
 
@@ -1147,12 +1183,14 @@
 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/13912/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/13912/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/19913 and its subdirectories
-I: Current time: Sun Apr 26 06:15:24 -12 2026
-I: pbuilder-time-stamp: 1777227324
+I: removing directory /srv/workspace/pbuilder/13912 and its subdirectories
+I: Current time: Tue Mar 25 01:53:51 +14 2025
+I: pbuilder-time-stamp: 1742817231