Diff of the two buildlogs:

--
--- b1/build.log	2024-05-28 11:21:36.464269950 +0000
+++ b2/build.log	2024-05-28 11:23:10.184279755 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon May 27 23:14:09 -12 2024
-I: pbuilder-time-stamp: 1716894849
+I: Current time: Wed May 29 01:21:46 +14 2024
+I: pbuilder-time-stamp: 1716895306
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -34,52 +34,84 @@
 dpkg-source: info: applying spelling.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/24705/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/2218/tmp/hooks/D01_modify_environment starting
+debug: Running on virt64b.
+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 May 28 11:22 /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/2218/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/2218/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='armhf'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=3 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='armhf'
+  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]="21" [3]="1" [4]="release" [5]="arm-unknown-linux-gnueabihf")
+  BASH_VERSION='5.2.21(1)-release'
+  BUILDDIR=/build/reproducible-path
+  BUILDUSERGECOS='second user,second room,second work-phone,second home-phone,second other'
+  BUILDUSERNAME=pbuilder2
+  BUILD_ARCH=armhf
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=4 '
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=arm
+  HOST_ARCH=armhf
   IFS=' 	
   '
-  INVOCATION_ID='d814a4ff0919444b91c9abbdcd54a145'
-  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='24705'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=70281d2a65394974a77a2251a186b47c
+  LANG=C
+  LANGUAGE=it_CH:it
+  LC_ALL=C
+  MACHTYPE=arm-unknown-linux-gnueabihf
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnueabihf
+  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=2218
   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.axTUIEEu/pbuilderrc_20Ft --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.axTUIEEu/b1 --logfile b1/build.log libcgi-application-perl_4.61+~1.21+~1.00+~1.01-1.dsc'
-  SUDO_GID='113'
-  SUDO_UID='107'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://10.0.0.15:3142/'
+  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.axTUIEEu/pbuilderrc_DdYn --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.axTUIEEu/b2 --logfile b2/build.log libcgi-application-perl_4.61+~1.21+~1.00+~1.01-1.dsc'
+  SUDO_GID=113
+  SUDO_UID=107
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://10.0.0.15:3142/
 I: uname -a
-  Linux cbxi4pro0 6.1.0-21-armmp #1 SMP Debian 6.1.90-1 (2024-05-03) armv7l GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-21-arm64 #1 SMP Debian 6.1.90-1 (2024-05-03) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 May 25 07:46 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/24705/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May 25 07:43 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/2218/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -184,7 +216,7 @@
 Get: 49 http://deb.debian.org/debian unstable/main armhf libtest-pod-coverage-perl all 1.10-3 [14.9 kB]
 Get: 50 http://deb.debian.org/debian unstable/main armhf libtest-pod-perl all 1.52-3 [12.6 kB]
 Get: 51 http://deb.debian.org/debian unstable/main armhf libtest-requires-perl all 0.11-1 [6964 B]
-Fetched 19.5 MB in 3s (7673 kB/s)
+Fetched 19.5 MB in 0s (41.6 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package sensible-utils.
 (Reading database ... 
(Reading database ... 5%
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(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19462 files and directories currently installed.)
@@ -407,7 +439,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/libcgi-application-perl-4.61+~1.21+~1.00+~1.01/ && 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  > ../libcgi-application-perl_4.61+~1.21+~1.00+~1.01-1_source.changes
+I: user script /srv/workspace/pbuilder/2218/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/2218/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libcgi-application-perl-4.61+~1.21+~1.00+~1.01/ && 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  > ../libcgi-application-perl_4.61+~1.21+~1.00+~1.01-1_source.changes
 dpkg-buildpackage: info: source package libcgi-application-perl
 dpkg-buildpackage: info: source version 4.61+~1.21+~1.00+~1.01-1
 dpkg-buildpackage: info: source distribution unstable
@@ -726,7 +762,7 @@
 ok 1 - Runmode 0 works
 ok
 All tests successful.
-Files=17, Tests=190, 40 wallclock secs ( 0.50 usr  0.16 sys + 16.16 cusr  1.98 csys = 18.80 CPU)
+Files=17, Tests=190,  5 wallclock secs ( 0.12 usr  0.04 sys +  4.38 cusr  0.54 csys =  5.08 CPU)
 Result: PASS
 set -e; for component in ep r sc; do \
 	PERL5LIB=/build/reproducible-path/libcgi-application-perl-4.61+~1.21+~1.00+~1.01/blib/lib LC_ALL=C.UTF-8 dh_auto_test --sourcedirectory=/build/reproducible-path/libcgi-application-perl-4.61+~1.21+~1.00+~1.01/$component ; \
@@ -742,7 +778,7 @@
 ok 1 - POD test for blib/lib/CGI/Application/Plugin/ErrorPage.pm
 ok
 All tests successful.
-Files=2, Tests=3,  5 wallclock secs ( 0.18 usr  0.04 sys +  2.08 cusr  0.31 csys =  2.61 CPU)
+Files=2, Tests=3,  0 wallclock secs ( 0.04 usr  0.02 sys +  0.58 cusr  0.08 csys =  0.72 CPU)
 Result: PASS
 	cd r && /usr/bin/perl Build test --verbose 1
 t/01_basic.t ......... 
@@ -765,7 +801,7 @@
 ok 1 - Pod coverage on CGI::Application::Plugin::Redirect
 ok
 All tests successful.
-Files=3, Tests=10,  7 wallclock secs ( 0.21 usr  0.03 sys +  2.82 cusr  0.38 csys =  3.44 CPU)
+Files=3, Tests=10,  1 wallclock secs ( 0.06 usr  0.02 sys +  0.84 cusr  0.08 csys =  1.00 CPU)
 Result: PASS
 	cd sc && /usr/bin/perl Build test --verbose 1
 # Testing CGI::Application::Standard::Config 1.01, Perl 5.038002, /usr/bin/perl
@@ -788,7 +824,7 @@
 ok 1 - POD test for blib/lib/CGI/Application/Standard/Config.pm
 ok
 All tests successful.
-Files=4, Tests=6,  8 wallclock secs ( 0.24 usr  0.05 sys +  3.41 cusr  0.50 csys =  4.20 CPU)
+Files=4, Tests=6,  1 wallclock secs ( 0.04 usr  0.02 sys +  0.84 cusr  0.08 csys =  0.98 CPU)
 Result: PASS
 make[1]: Leaving directory '/build/reproducible-path/libcgi-application-perl-4.61+~1.21+~1.00+~1.01'
    create-stamp debian/debhelper-build-stamp
@@ -851,12 +887,14 @@
 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/2218/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/2218/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/24705 and its subdirectories
-I: Current time: Mon May 27 23:21:31 -12 2024
-I: pbuilder-time-stamp: 1716895291
+I: removing directory /srv/workspace/pbuilder/2218 and its subdirectories
+I: Current time: Wed May 29 01:23:06 +14 2024
+I: pbuilder-time-stamp: 1716895386