Diff of the two buildlogs:

--
--- b1/build.log	2025-03-06 12:53:44.043453620 +0000
+++ b2/build.log	2025-03-06 12:56:54.754855669 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Apr  8 07:15:48 -12 2026
-I: pbuilder-time-stamp: 1775675748
+I: Current time: Fri Mar  7 02:53:47 +14 2025
+I: pbuilder-time-stamp: 1741265627
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -26,52 +26,84 @@
 dpkg-source: info: applying 13_colored2_version
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3745126/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/397097/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink04-arm64.
+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  6 12:53 /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/397097/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/397097/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='arm64'
-  DEBIAN_FRONTEND='noninteractive'
+  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]="aarch64-unknown-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=arm64
+  DEBIAN_FRONTEND=noninteractive
   DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=12 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  INVOCATION_ID='76deaa5c226f4eea907bf5afe148917a'
-  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='3745126'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=619e061985b647ca8e732d60d1a3748f
+  LANG=C
+  LANGUAGE=nl_BE:nl
+  LC_ALL=C
+  MACHTYPE=aarch64-unknown-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=397097
   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.ZwbA5B6K/pbuilderrc_UWx2 --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.ZwbA5B6K/b1 --logfile b1/build.log r10k_5.0.0-2.dsc'
-  SUDO_GID='109'
-  SUDO_UID='104'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://192.168.101.4:3128'
+  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.ZwbA5B6K/pbuilderrc_bwKo --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.ZwbA5B6K/b2 --logfile b2/build.log r10k_5.0.0-2.dsc'
+  SUDO_GID=109
+  SUDO_UID=104
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://192.168.101.4:3128
 I: uname -a
-  Linux codethink03-arm64 6.1.0-31-cloud-arm64 #1 SMP Debian 6.1.128-1 (2025-02-07) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-31-cloud-arm64 #1 SMP Debian 6.1.128-1 (2025-02-07) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3745126/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4 11:20 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/397097/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -342,7 +374,7 @@
 Get: 202 http://deb.debian.org/debian unstable/main arm64 ruby-rspec all 3.13.0c0e0m0s1-2 [5184 B]
 Get: 203 http://deb.debian.org/debian unstable/main arm64 ruby-rugged arm64 1.7.2+ds-3+b2 [94.7 kB]
 Get: 204 http://deb.debian.org/debian unstable/main arm64 yard all 0.9.37-1 [547 kB]
-Fetched 77.6 MB in 1s (116 MB/s)
+Fetched 77.6 MB in 1s (59.2 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-minimal:arm64.
 (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 ... 19897 files and directories currently installed.)
@@ -1015,8 +1047,8 @@
 Setting up tzdata (2025a-2) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Wed Apr  8 19:16:16 UTC 2026.
-Universal Time is now:  Wed Apr  8 19:16:16 UTC 2026.
+Local time is now:      Thu Mar  6 12:55:20 UTC 2025.
+Universal Time is now:  Thu Mar  6 12:55:20 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up liberror-perl (0.17030-1) ...
@@ -1195,7 +1227,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/r10k-5.0.0/ && 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  > ../r10k_5.0.0-2_source.changes
+I: user script /srv/workspace/pbuilder/397097/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/397097/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/r10k-5.0.0/ && 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  > ../r10k_5.0.0-2_source.changes
 dpkg-buildpackage: info: source package r10k
 dpkg-buildpackage: info: source version 5.0.0-2
 dpkg-buildpackage: info: source distribution unstable
@@ -1379,11 +1415,15 @@
 
 RUBYLIB=/build/reproducible-path/r10k-5.0.0/debian/r10k/usr/lib/ruby/vendor_ruby:. GEM_PATH=/build/reproducible-path/r10k-5.0.0/debian/r10k/usr/share/rubygems-integration/all:/build/reproducible-path/r10k-5.0.0/debian/.debhelper/generated/_source/home/.local/share/gem/ruby/3.3.0:/var/lib/gems/3.3.0:/usr/local/lib/ruby/gems/3.3.0:/usr/lib/ruby/gems/3.3.0:/usr/lib/aarch64-linux-gnu/ruby/gems/3.3.0:/usr/share/rubygems-integration/3.3.0:/usr/share/rubygems-integration/all:/usr/lib/aarch64-linux-gnu/rubygems-integration/3.3.0 ruby3.3 -S rake --rakelibdir /gem2deb-nonexistent -f debian/ruby-tests.rake
 /usr/bin/ruby3.3 -I/usr/share/rubygems-integration/all/gems/rspec-support-3.13.1/lib:/usr/share/rubygems-integration/all/gems/rspec-core-3.13.0/lib /usr/share/rubygems-integration/all/gems/rspec-core-3.13.0/exe/rspec --pattern spec/\*\*\{,/\*/\*\*\}/\*_spec.rb  --exclude-pattern ./spec/unit/forge/module_release_spec.rb
-.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................*................*.................................................................................................................................................................................................................................................................................................................................................................................................................................#<Thread:0x0000ffff865c9d98 /build/reproducible-path/r10k-5.0.0/lib/r10k/util/subprocess/runner/pump.rb:30 run> terminated with exception (report_on_exception is true):
-<internal:io>:63:in `read_nonblock': stream closed in another thread (IOError)
+.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................*................*...................................................................................................................................................................................................................................................................................................................................................................................................................................#<Thread:0x0000ffff75d50a00 /build/reproducible-path/r10k-5.0.0/lib/r10k/util/subprocess/runner/pump.rb:30 run> terminated with exception (report_on_exception is true):
+/build/reproducible-path/r10k-5.0.0/lib/r10k/util/subprocess/runner/pump.rb:53:in `select': closed stream (IOError)
+	from /build/reproducible-path/r10k-5.0.0/lib/r10k/util/subprocess/runner/pump.rb:53:in `rescue in pump'
+	from /build/reproducible-path/r10k-5.0.0/lib/r10k/util/subprocess/runner/pump.rb:48:in `pump'
+	from /build/reproducible-path/r10k-5.0.0/lib/r10k/util/subprocess/runner/pump.rb:30:in `block in start'
+<internal:io>:63:in `read_nonblock': Resource temporarily unavailable - read would block (IO::EAGAINWaitReadable)
 	from /build/reproducible-path/r10k-5.0.0/lib/r10k/util/subprocess/runner/pump.rb:49:in `pump'
 	from /build/reproducible-path/r10k-5.0.0/lib/r10k/util/subprocess/runner/pump.rb:30:in `block in start'
-.......................
+.....................
 
 Pending: (Failures listed here are expected and do not affect your suite's status)
 
@@ -1395,7 +1435,7 @@
      # Temporarily skipped with xit
      # ./spec/unit/module/forge_spec.rb:246
 
-Finished in 6.65 seconds (files took 0.80131 seconds to load)
+Finished in 22.6 seconds (files took 2.76 seconds to load)
 1003 examples, 0 failures, 2 pending
 
 
@@ -1428,12 +1468,14 @@
 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/397097/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/397097/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/3745126 and its subdirectories
-I: Current time: Wed Apr  8 07:16:42 -12 2026
-I: pbuilder-time-stamp: 1775675802
+I: removing directory /srv/workspace/pbuilder/397097 and its subdirectories
+I: Current time: Fri Mar  7 02:56:53 +14 2025
+I: pbuilder-time-stamp: 1741265813