Diff of the two buildlogs:

--
--- b1/build.log	2024-12-04 06:04:14.830757532 +0000
+++ b2/build.log	2024-12-04 06:06:21.001057495 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Tue Dec  3 18:02:36 -12 2024
-I: pbuilder-time-stamp: 1733292156
+I: Current time: Wed Dec  4 20:04:23 +14 2024
+I: pbuilder-time-stamp: 1733292263
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -25,52 +25,84 @@
 dpkg-source: info: unpacking liblwp-useragent-determined-perl_1.07-3.debian.tar.xz
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/6593/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/7808/tmp/hooks/D01_modify_environment starting
+debug: Running on virt64a.
+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 Dec  4 06:04 /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/7808/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/7808/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='trixie'
-  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]="32" [3]="1" [4]="release" [5]="arm-unknown-linux-gnueabihf")
+  BASH_VERSION='5.2.32(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=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=arm
+  HOST_ARCH=armhf
   IFS=' 	
   '
-  INVOCATION_ID='305b443e3fb04128bbb2c32cf255f1ea'
-  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='6593'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=bfea415a2a3d4b67b1936f05a4c7bf53
+  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=7808
   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.xGZlEdjY/pbuilderrc_1v3Z --distribution trixie --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/trixie-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.xGZlEdjY/b1 --logfile b1/build.log liblwp-useragent-determined-perl_1.07-3.dsc'
-  SUDO_GID='110'
-  SUDO_UID='103'
-  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.xGZlEdjY/pbuilderrc_qC8A --distribution trixie --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/trixie-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.xGZlEdjY/b2 --logfile b2/build.log liblwp-useragent-determined-perl_1.07-3.dsc'
+  SUDO_GID=114
+  SUDO_UID=108
+  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 virt32z 6.1.0-28-armmp-lpae #1 SMP Debian 6.1.119-1 (2024-11-22) armv7l GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-28-arm64 #1 SMP Debian 6.1.119-1 (2024-11-22) aarch64 GNU/Linux
 I: ls -l /bin
   lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/6593/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/7808/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -162,7 +194,7 @@
 Get: 52 http://deb.debian.org/debian trixie/main armhf libwww-robotrules-perl all 6.02-1 [12.9 kB]
 Get: 53 http://deb.debian.org/debian trixie/main armhf libwww-perl all 6.77-1 [183 kB]
 Get: 54 http://deb.debian.org/debian trixie/main armhf liblwp-protocol-https-perl all 6.14-1 [10.8 kB]
-Fetched 22.1 MB in 0s (51.1 MB/s)
+Fetched 22.1 MB in 1s (34.2 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package netbase.
 (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 ... 19684 files and directories currently installed.)
@@ -405,7 +437,11 @@
 fakeroot is already the newest version (1.36-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/liblwp-useragent-determined-perl-1.07/ && 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  > ../liblwp-useragent-determined-perl_1.07-3_source.changes
+I: user script /srv/workspace/pbuilder/7808/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/7808/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/liblwp-useragent-determined-perl-1.07/ && 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  > ../liblwp-useragent-determined-perl_1.07-3_source.changes
 dpkg-buildpackage: info: source package liblwp-useragent-determined-perl
 dpkg-buildpackage: info: source version 1.07-3
 dpkg-buildpackage: info: source distribution unstable
@@ -427,20 +463,20 @@
 Writing Makefile for LWP::UserAgent::Determined
 Writing MYMETA.yml and MYMETA.json
    dh_auto_build
-	make -j3
+	make -j4
 make[1]: Entering directory '/build/reproducible-path/liblwp-useragent-determined-perl-1.07'
 cp lib/LWP/UserAgent/Determined.pm blib/lib/LWP/UserAgent/Determined.pm
 Manifying 1 pod document
 make[1]: Leaving directory '/build/reproducible-path/liblwp-useragent-determined-perl-1.07'
    dh_auto_test
-	make -j3 test TEST_VERBOSE=1
+	make -j4 test TEST_VERBOSE=1
 make[1]: Entering directory '/build/reproducible-path/liblwp-useragent-determined-perl-1.07'
 PERL_DL_NONLAZY=1 "/usr/bin/perl" "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harness::Switches; test_harness(1, 'blib/lib', 'blib/arch')" t/*.t
 t/01_about_verbose.t .... 
 1..2
 # Running under perl version 5.040000 for linux
-# Current time local: Wed Dec  4 06:03:26 2024
-# Current time GMT:   Wed Dec  4 06:03:26 2024
+# Current time local: Wed Dec  4 06:05:28 2024
+# Current time GMT:   Wed Dec  4 06:05:28 2024
 # Using Test.pm version 1.31
 ok 1
 #
@@ -561,7 +597,7 @@
 #      warnings::register v1.06;
 #    Win32;
 #    XSLoader v0.32;
-#[at Wed Dec  4 06:03:26 2024 (local) / Wed Dec  4 06:03:26 2024 (GMT)]
+#[at Wed Dec  4 06:05:28 2024 (local) / Wed Dec  4 06:05:28 2024 (GMT)]
 # Running in an ASCII world.
 #
 # @INC:
@@ -625,8 +661,8 @@
 t/10_determined_test.t .. 
 1..13
 # Running under perl version 5.040000 for linux
-# Current time local: Wed Dec  4 06:03:26 2024
-# Current time GMT:   Wed Dec  4 06:03:26 2024
+# Current time local: Wed Dec  4 06:05:29 2024
+# Current time GMT:   Wed Dec  4 06:05:29 2024
 # Using Test.pm version 1.31
 ok 1
 # Hello from t/10_determined_test.t
@@ -635,14 +671,14 @@
 # LWP v6.77
 ok 2
 ok 3
-#  /Trying http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:03:26 2024...
-#  \Just tried http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:03:26 2024.  Waiting 1s.
-#  /Trying http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:03:27 2024...
-#  \Just tried http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:03:27 2024.  Waiting 3s.
-#  /Trying http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:03:30 2024...
-#  \Just tried http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:03:30 2024.  Waiting 15s.
-#  /Trying http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:03:45 2024...
-#  \Just tried http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:03:45 2024.  Giving up.
+#  /Trying http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:05:29 2024...
+#  \Just tried http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:05:29 2024.  Waiting 1s.
+#  /Trying http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:05:30 2024...
+#  \Just tried http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:05:30 2024.  Waiting 3s.
+#  /Trying http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:05:33 2024...
+#  \Just tried http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:05:33 2024.  Waiting 15s.
+#  /Trying http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:05:48 2024...
+#  \Just tried http://www.livejournal.com/~torgo_x/rss at Wed Dec  4 06:05:48 2024.  Giving up.
 ok 4
 # That gave: 503 Service Unavailable
 # Before_count: 4
@@ -650,14 +686,14 @@
 # After_count: 4
 ok 6
 # Trying unknown host/port, http://www.aoeaoeaoeaoe.int:9876/sntstn
-#  /Trying http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:03:45 2024...
-#  \Just tried http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:03:45 2024.  Waiting 1s.
-#  /Trying http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:03:46 2024...
-#  \Just tried http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:03:46 2024.  Waiting 3s.
-#  /Trying http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:03:49 2024...
-#  \Just tried http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:03:49 2024.  Waiting 15s.
-#  /Trying http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:04:04 2024...
-#  \Just tried http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:04:04 2024.  Giving up.
+#  /Trying http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:05:48 2024...
+#  \Just tried http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:05:48 2024.  Waiting 1s.
+#  /Trying http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:05:49 2024...
+#  \Just tried http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:05:49 2024.  Waiting 3s.
+#  /Trying http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:05:52 2024...
+#  \Just tried http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:05:52 2024.  Waiting 15s.
+#  /Trying http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:06:07 2024...
+#  \Just tried http://www.aoeaoeaoeaoe.int:9876/sntstn at Wed Dec  4 06:06:07 2024.  Giving up.
 ok 7
 # Timing: 1,2,3
 # That gave: 500 Internal Server Error
@@ -666,8 +702,8 @@
 # After_count: 4
 ok 9
 # Trying a nonexistent address, http://www.google.com/should-always-return-a-404
-#  /Trying http://www.google.com/should-always-return-a-404 at Wed Dec  4 06:04:04 2024...
-#  \Just tried http://www.google.com/should-always-return-a-404 at Wed Dec  4 06:04:04 2024.  Waiting 1s.
+#  /Trying http://www.google.com/should-always-return-a-404 at Wed Dec  4 06:06:07 2024...
+#  \Just tried http://www.google.com/should-always-return-a-404 at Wed Dec  4 06:06:07 2024.  Waiting 1s.
 ok 10
 # Timing: 1,2,3
 # That gave: 404 Not Found
@@ -679,7 +715,7 @@
 ok 13
 ok
 All tests successful.
-Files=2, Tests=15, 38 wallclock secs ( 0.06 usr  0.02 sys +  0.19 cusr  0.05 csys =  0.32 CPU)
+Files=2, Tests=15, 39 wallclock secs ( 0.06 usr  0.02 sys +  0.30 cusr  0.04 csys =  0.42 CPU)
 Result: PASS
 make[1]: Leaving directory '/build/reproducible-path/liblwp-useragent-determined-perl-1.07'
    create-stamp debian/debhelper-build-stamp
@@ -688,7 +724,7 @@
    dh_testroot
    dh_prep
    dh_auto_install --destdir=debian/liblwp-useragent-determined-perl/
-	make -j3 install DESTDIR=/build/reproducible-path/liblwp-useragent-determined-perl-1.07/debian/liblwp-useragent-determined-perl AM_UPDATE_INFO_DIR=no PREFIX=/usr
+	make -j4 install DESTDIR=/build/reproducible-path/liblwp-useragent-determined-perl-1.07/debian/liblwp-useragent-determined-perl AM_UPDATE_INFO_DIR=no PREFIX=/usr
 make[1]: Entering directory '/build/reproducible-path/liblwp-useragent-determined-perl-1.07'
 Manifying 1 pod document
 Installing /build/reproducible-path/liblwp-useragent-determined-perl-1.07/debian/liblwp-useragent-determined-perl/usr/share/perl5/LWP/UserAgent/Determined.pm
@@ -715,12 +751,14 @@
 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/7808/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/7808/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/6593 and its subdirectories
-I: Current time: Tue Dec  3 18:04:11 -12 2024
-I: pbuilder-time-stamp: 1733292251
+I: removing directory /srv/workspace/pbuilder/7808 and its subdirectories
+I: Current time: Wed Dec  4 20:06:16 +14 2024
+I: pbuilder-time-stamp: 1733292376