Diff of the two buildlogs:

--
--- b1/build.log	2023-05-05 18:00:27.808939361 +0000
+++ b2/build.log	2023-05-05 18:02:00.688863154 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Fri May  5 05:58:55 -12 2023
-I: pbuilder-time-stamp: 1683309535
+I: Current time: Fri Jun  7 14:23:31 +14 2024
+I: pbuilder-time-stamp: 1717719811
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/bookworm-reproducible-base.tgz]
 I: copying local configuration
@@ -16,7 +16,7 @@
 I: copying [./ruby-webrobots_0.1.2.orig.tar.gz]
 I: copying [./ruby-webrobots_0.1.2-1.1.debian.tar.xz]
 I: Extracting source
-gpgv: Signature made Tue Jun 14 01:35:26 2022 -12
+gpgv: Signature made Wed Jun 15 03:35:26 2022 +14
 gpgv:                using RSA key B8BF54137B09D35CF026FE9D091AB856069AAA1C
 gpgv: Can't check signature: No public key
 dpkg-source: warning: cannot verify inline signature for ./ruby-webrobots_0.1.2-1.1.dsc: no acceptable signature found
@@ -28,52 +28,84 @@
 dpkg-source: info: applying disable-internet-tests
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/19639/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/15626/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink13-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 Jun  7 14:23 /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/15626/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/15626/tmp/hooks/D02_print_environment starting
 I: set
-  BUILDDIR='/build'
-  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]="15" [3]="1" [4]="release" [5]="aarch64-unknown-linux-gnu")
+  BASH_VERSION='5.2.15(1)-release'
+  BUILDDIR=/build
+  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=8'
-  DISTRIBUTION='bookworm'
-  HOME='/var/lib/jenkins'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=bookworm
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/var/lib/jenkins
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  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='19639'
-  PS1='# '
-  PS2='> '
+  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=15626
   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.uEro5x96/pbuilderrc_h11P --distribution bookworm --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.uEro5x96/b1 --logfile b1/build.log ruby-webrobots_0.1.2-1.1.dsc'
-  SUDO_GID='117'
-  SUDO_UID='110'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  USERNAME='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://192.168.101.16:3128'
+  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.uEro5x96/pbuilderrc_0cac --distribution bookworm --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.uEro5x96/b2 --logfile b2/build.log --extrapackages usrmerge ruby-webrobots_0.1.2-1.1.dsc'
+  SUDO_GID=117
+  SUDO_UID=110
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  USERNAME=root
+  _='I: set'
+  http_proxy=http://192.168.101.16:3128
 I: uname -a
-  Linux codethink14-arm64 4.15.0-210-generic #221-Ubuntu SMP Tue Apr 18 08:32:48 UTC 2023 aarch64 GNU/Linux
+  Linux i-capture-the-hostname 4.15.0-210-generic #221-Ubuntu SMP Tue Apr 18 08:32:48 UTC 2023 aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 May  3 22:26 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/19639/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May  6  2023 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/15626/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -265,7 +297,7 @@
 Get: 142 http://deb.debian.org/debian bookworm/main arm64 ruby-shoulda-matchers all 4.3.0-2 [72.8 kB]
 Get: 143 http://deb.debian.org/debian bookworm/main arm64 ruby-shoulda all 4.0.0-3 [6352 B]
 Get: 144 http://deb.debian.org/debian bookworm/main arm64 ruby-webmock all 3.18.1-2 [66.2 kB]
-Fetched 46.7 MB in 2s (28.7 MB/s)
+Fetched 46.7 MB in 1s (38.1 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libpython3.11-minimal:arm64.
 (Reading database ... 
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(Reading database ... 75%
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(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19616 files and directories currently installed.)
@@ -867,10 +899,15 @@
 Reading package lists...
 Building dependency tree...
 Reading state information...
+usrmerge is already the newest version (35).
 fakeroot is already the newest version (1.31-1.2).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/ruby-webrobots-0.1.2/ && 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-webrobots_0.1.2-1.1_source.changes
+I: user script /srv/workspace/pbuilder/15626/tmp/hooks/A99_set_merged_usr starting
+Re-configuring usrmerge...
+I: user script /srv/workspace/pbuilder/15626/tmp/hooks/A99_set_merged_usr finished
+hostname: Temporary failure in name resolution
+I: Running cd /build/ruby-webrobots-0.1.2/ && 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-webrobots_0.1.2-1.1_source.changes
 dpkg-buildpackage: info: source package ruby-webrobots
 dpkg-buildpackage: info: source version 0.1.2-1.1
 dpkg-buildpackage: info: source distribution unstable
@@ -942,35 +979,35 @@
 Loaded suite /usr/lib/ruby/gems/3.1.0/gems/rake-13.0.6/lib/rake/rake_test_loader
 Started
 TestWebRobots: 
-  test: embedded in a user-agent should fetch robots.txt. :	.: (0.002251)
+  test: embedded in a user-agent should fetch robots.txt. :	.: (0.002018)
   test: meta robots tag should be properly parsed when given in HTML string. :	/usr/lib/aarch64-linux-gnu/rubygems-integration/3.1.0/gems/nokogiri-1.13.10/lib/nokogiri/version/info.rb:85: warning: possibly useless use of a variable in void context
-.: (0.222614)
-  test: nil or error from a custom http_get proc should be treated as full disallow. :	.: (0.005934)
-  test: robots.txt cache should persist for non-existent robots.txt unless cache is cleared. :	.: (0.004346)
-  test: robots.txt cache should persist unless cache is cleared. :	.: (0.003606)
-  test: robots.txt with a space at the end of the last line should be properly parsed. :.: (0.002296)
-  test: robots.txt with errors should raise ParseError. :	.: (0.012105)
-  test: robots.txt with just user-agent & sitemap and no blank line between them should be properly parsed. :	.: (0.001569)
-  test: robots.txt with no rules should be treated as full allow. :	.: (0.003182)
-  test: robots.txt with options should be properly read. :	.: (3.029525)
-  test: robots.txt with options should validate URI. :	.: (0.001022)
-  test: robots.txt with some rules should follow what is said in Koster's draft. :	.: (0.026850)
-  test: robots.txt with some rules should properly restrict access. :	.: (0.023881)
-  test: the default http_get proc should treat 201 as success. :.: (0.023538)
-  test: the default http_get proc should treat 400 as full allow. :	.: (0.006626)
-  test: the default http_get proc should treat 401 as full allow. :	.: (0.014327)
-  test: the default http_get proc should treat 403 as full allow. :	.: (0.006428)
-  test: the default http_get proc should treat 404 as full allow. :	.: (0.018364)
-  test: the default http_get proc should treat 500 as error after retrying 5 times. :	.: (0.023664)
-  test: the default http_get proc should treat 503 as error after retrying 5 times. :	.: (0.031714)
-  test: the default http_get proc should treat redirects more than 5 times as full allow. :	.: (0.038696)
+.: (0.237035)
+  test: nil or error from a custom http_get proc should be treated as full disallow. :	.: (0.005992)
+  test: robots.txt cache should persist for non-existent robots.txt unless cache is cleared. :	.: (0.004245)
+  test: robots.txt cache should persist unless cache is cleared. :	.: (0.003825)
+  test: robots.txt with a space at the end of the last line should be properly parsed. :.: (0.002171)
+  test: robots.txt with errors should raise ParseError. :	.: (0.012298)
+  test: robots.txt with just user-agent & sitemap and no blank line between them should be properly parsed. :	.: (0.001224)
+  test: robots.txt with no rules should be treated as full allow. :	.: (0.002938)
+  test: robots.txt with options should be properly read. :	.: (3.029445)
+  test: robots.txt with options should validate URI. :	.: (0.000794)
+  test: robots.txt with some rules should follow what is said in Koster's draft. :	.: (0.021536)
+  test: robots.txt with some rules should properly restrict access. :	.: (0.017786)
+  test: the default http_get proc should treat 201 as success. :.: (0.016639)
+  test: the default http_get proc should treat 400 as full allow. :	.: (0.021044)
+  test: the default http_get proc should treat 401 as full allow. :	.: (0.006067)
+  test: the default http_get proc should treat 403 as full allow. :	.: (0.006041)
+  test: the default http_get proc should treat 404 as full allow. :	.: (0.005250)
+  test: the default http_get proc should treat 500 as error after retrying 5 times. :	.: (0.019556)
+  test: the default http_get proc should treat 503 as error after retrying 5 times. :	.: (0.018778)
+  test: the default http_get proc should treat redirects more than 5 times as full allow. :	.: (0.029310)
 
-Finished in 3.507963092 seconds.
+Finished in 3.46894612 seconds.
 -------------------------------------------------------------------------------
 21 tests, 182 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
 100% passed
 -------------------------------------------------------------------------------
-5.99 tests/s, 51.88 assertions/s
+6.05 tests/s, 52.47 assertions/s
 
 ┌──────────────────────────────────────────────────────────────────────────────┐
 │ dh_ruby --install finished                                                   │
@@ -1006,12 +1043,14 @@
 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/15626/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/15626/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/19639 and its subdirectories
-I: Current time: Fri May  5 06:00:26 -12 2023
-I: pbuilder-time-stamp: 1683309626
+I: removing directory /srv/workspace/pbuilder/15626 and its subdirectories
+I: Current time: Fri Jun  7 14:24:59 +14 2024
+I: pbuilder-time-stamp: 1717719899