Diff of the two buildlogs:

--
--- b1/build.log	2023-04-10 19:47:08.982350163 +0000
+++ b2/build.log	2023-04-10 19:48:05.352465014 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Apr 10 07:45:56 -12 2023
-I: pbuilder-time-stamp: 1681155956
+I: Current time: Mon May 13 16:10:11 +14 2024
+I: pbuilder-time-stamp: 1715566211
 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 [./libdata-dump-streamer-perl_2.42.orig.tar.gz]
 I: copying [./libdata-dump-streamer-perl_2.42-1.debian.tar.xz]
 I: Extracting source
-gpgv: Signature made Fri Feb 24 13:22:17 2023 -12
+gpgv: Signature made Sat Feb 25 15:22:17 2023 +14
 gpgv:                using RSA key D1E1316E93A760A8104D85FABB3A68018649AA06
 gpgv: Can't check signature: No public key
 dpkg-source: warning: cannot verify inline signature for ./libdata-dump-streamer-perl_2.42-1.dsc: no acceptable signature found
@@ -28,11 +28,20 @@
 dpkg-source: info: applying auto-gitignore
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/11937/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/21612/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink11-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
+lrwxrwxrwx 1 root root 4 Jan  6  2023 /bin/sh -> dash
+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/21612/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/21612/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'
+  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'
@@ -42,38 +51,38 @@
   IFS=' 	
   '
   LANG='C'
-  LANGUAGE='en_US:en'
+  LANGUAGE='nl_BE:nl'
   LC_ALL='C'
   MAIL='/var/mail/root'
   OPTIND='1'
-  PATH='/usr/sbin:/usr/bin:/sbin:/bin:/usr/games'
+  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'
-  PPID='11937'
+  PPID='21612'
   PS1='# '
   PS2='> '
   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.EMS0cC2y/pbuilderrc_cyHf --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.EMS0cC2y/b1 --logfile b1/build.log libdata-dump-streamer-perl_2.42-1.dsc'
+  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.EMS0cC2y/pbuilderrc_JMdV --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.EMS0cC2y/b2 --logfile b2/build.log --extrapackages usrmerge libdata-dump-streamer-perl_2.42-1.dsc'
   SUDO_GID='117'
   SUDO_UID='110'
   SUDO_USER='jenkins'
   TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
+  TZ='/usr/share/zoneinfo/Etc/GMT-14'
   USER='root'
   USERNAME='root'
   _='/usr/bin/systemd-run'
   http_proxy='http://192.168.101.16:3128'
 I: uname -a
-  Linux codethink16-arm64 4.15.0-208-generic #220-Ubuntu SMP Mon Mar 20 14:28:12 UTC 2023 aarch64 GNU/Linux
+  Linux i-capture-the-hostname 4.15.0-208-generic #220-Ubuntu SMP Mon Mar 20 14:28:12 UTC 2023 aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Apr  7 22:25 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/11937/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May 13 06:50 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/21612/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -162,7 +171,7 @@
 Get: 36 http://deb.debian.org/debian bookworm/main arm64 libmodule-build-perl all 0.423200-1 [253 kB]
 Get: 37 http://deb.debian.org/debian bookworm/main arm64 libpadwalker-perl arm64 2.5-1+b3 [17.9 kB]
 Get: 38 http://deb.debian.org/debian bookworm/main arm64 libperl-dev arm64 5.36.0-7 [957 kB]
-Fetched 19.8 MB in 2s (8908 kB/s)
+Fetched 19.8 MB in 3s (7816 kB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package sensible-utils.
 (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 ... 19616 files and directories currently installed.)
@@ -330,8 +339,17 @@
 Writing extended state information...
 Building tag database...
  -> Finished parsing the build-deps
+Reading package lists...
+Building dependency tree...
+Reading state information...
+usrmerge is already the newest version (35).
+0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/libdata-dump-streamer-perl-2.42/ && 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  > ../libdata-dump-streamer-perl_2.42-1_source.changes
+I: user script /srv/workspace/pbuilder/21612/tmp/hooks/A99_set_merged_usr starting
+Re-configuring usrmerge...
+I: user script /srv/workspace/pbuilder/21612/tmp/hooks/A99_set_merged_usr finished
+hostname: Temporary failure in name resolution
+I: Running cd /build/libdata-dump-streamer-perl-2.42/ && 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  > ../libdata-dump-streamer-perl_2.42-1_source.changes
 dpkg-buildpackage: info: source package libdata-dump-streamer-perl
 dpkg-buildpackage: info: source version 2.42-1
 dpkg-buildpackage: info: source distribution unstable
@@ -688,8 +706,8 @@
 ok 13 - Test:100
 ok 14 - Test:1.234
 ok 15 - Test:1e+40
-ok 16 - Test:1.234
-ok 17 - Test:1e+40
+ok 16 - Test:1e+40
+ok 17 - Test:1.234
 ok 18 - Test:100
 ok
 t/refelem.t ......... 
@@ -726,88 +744,88 @@
 # A
 # 'undef' - ''
 ok 8
-# HASH(0xaaaaf4bf7a08)
+# HASH(0xaaaafa943098)
 # 'HASH' - 'HASH'
 ok 9
-# HASH(0xaaaaf4bf7a08)
+# HASH(0xaaaafa943098)
 # 'HASH' - 'HASH'
 ok 10
-# ABC=HASH(0xaaaaf4bf7a08)
+# ABC=HASH(0xaaaafa943098)
 # 'HASH' - 'HASH'
 ok 11
-# 0=HASH(0xaaaaf4bf7a08)
+# 0=HASH(0xaaaafa943098)
 # 'HASH' - 'HASH'
 ok 12
-# ARRAY(0xaaaaf48c5870)
+# ARRAY(0xaaaafa6cddd0)
 # 'ARRAY' - 'ARRAY'
 ok 13
-# ARRAY(0xaaaaf48c5870)
+# ARRAY(0xaaaafa6cddd0)
 # 'ARRAY' - 'ARRAY'
 ok 14
-# ABC=ARRAY(0xaaaaf48c5870)
+# ABC=ARRAY(0xaaaafa6cddd0)
 # 'ARRAY' - 'ARRAY'
 ok 15
-# 0=ARRAY(0xaaaaf48c5870)
+# 0=ARRAY(0xaaaafa6cddd0)
 # 'ARRAY' - 'ARRAY'
 ok 16
-# SCALAR(0xaaaaf4b3a4c0)
+# SCALAR(0xaaaafa943470)
 # 'SCALAR' - 'SCALAR'
 ok 17
-# SCALAR(0xaaaaf4b3a4c0)
+# SCALAR(0xaaaafa943470)
 # 'SCALAR' - 'SCALAR'
 ok 18
-# ABC=SCALAR(0xaaaaf4b3a4c0)
+# ABC=SCALAR(0xaaaafa943470)
 # 'SCALAR' - 'SCALAR'
 ok 19
-# 0=SCALAR(0xaaaaf4b3a4c0)
+# 0=SCALAR(0xaaaafa943470)
 # 'SCALAR' - 'SCALAR'
 ok 20
-# REF(0xaaaaf4aef1e0)
+# REF(0xaaaafa6b9f18)
 # 'REF' - 'REF'
 ok 21
-# REF(0xaaaaf4aef1e0)
+# REF(0xaaaafa6b9f18)
 # 'REF' - 'REF'
 ok 22
-# ABC=REF(0xaaaaf4aef1e0)
+# ABC=REF(0xaaaafa6b9f18)
 # 'REF' - 'REF'
 ok 23
-# 0=REF(0xaaaaf4aef1e0)
+# 0=REF(0xaaaafa6b9f18)
 # 'REF' - 'REF'
 ok 24
-# GLOB(0xaaaaf4b74b10)
+# GLOB(0xaaaafa943080)
 # 'GLOB' - 'GLOB'
 ok 25
-# GLOB(0xaaaaf4b74b10)
+# GLOB(0xaaaafa943080)
 # 'GLOB' - 'GLOB'
 ok 26
-# ABC=GLOB(0xaaaaf4b74b10)
+# ABC=GLOB(0xaaaafa943080)
 # 'GLOB' - 'GLOB'
 ok 27
-# 0=GLOB(0xaaaaf4b74b10)
+# 0=GLOB(0xaaaafa943080)
 # 'GLOB' - 'GLOB'
 ok 28
-# GLOB(0xaaaaf4963d88)
+# GLOB(0xaaaafa943530)
 # 'GLOB' - 'GLOB'
 ok 29
-# GLOB(0xaaaaf4963d88)
+# GLOB(0xaaaafa943530)
 # 'GLOB' - 'GLOB'
 ok 30
-# ABC=GLOB(0xaaaaf4963d88)
+# ABC=GLOB(0xaaaafa943530)
 # 'GLOB' - 'GLOB'
 ok 31
-# 0=GLOB(0xaaaaf4963d88)
+# 0=GLOB(0xaaaafa943530)
 # 'GLOB' - 'GLOB'
 ok 32
-# CODE(0xaaaaf4b32698)
+# CODE(0xaaaafa93b4e8)
 # 'CODE' - 'CODE'
 ok 33
-# CODE(0xaaaaf4b32698)
+# CODE(0xaaaafa93b4e8)
 # 'CODE' - 'CODE'
 ok 34
-# ABC=CODE(0xaaaaf4b32698)
+# ABC=CODE(0xaaaafa93b4e8)
 # 'CODE' - 'CODE'
 ok 35
-# 0=CODE(0xaaaaf4b32698)
+# 0=CODE(0xaaaafa93b4e8)
 # 'CODE' - 'CODE'
 ok 36
 ok
@@ -900,7 +918,7 @@
 ok 36 - lock_keys_plus() @keys
 ok
 All tests successful.
-Files=26, Tests=375, 16 wallclock secs ( 0.32 usr  0.09 sys + 14.09 cusr  1.24 csys = 15.74 CPU)
+Files=26, Tests=375, 12 wallclock secs ( 0.19 usr  0.07 sys + 10.26 cusr  0.86 csys = 11.38 CPU)
 Result: PASS
    create-stamp debian/debhelper-build-stamp
    dh_prep
@@ -931,8 +949,8 @@
    dh_gencontrol
    dh_md5sums
    dh_builddeb
-dpkg-deb: building package 'libdata-dump-streamer-perl' in '../libdata-dump-streamer-perl_2.42-1_arm64.deb'.
 dpkg-deb: building package 'libdata-dump-streamer-perl-dbgsym' in '../libdata-dump-streamer-perl-dbgsym_2.42-1_arm64.deb'.
+dpkg-deb: building package 'libdata-dump-streamer-perl' in '../libdata-dump-streamer-perl_2.42-1_arm64.deb'.
  dpkg-genbuildinfo --build=binary -O../libdata-dump-streamer-perl_2.42-1_arm64.buildinfo
  dpkg-genchanges --build=binary -O../libdata-dump-streamer-perl_2.42-1_arm64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -940,12 +958,14 @@
 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/21612/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/21612/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/11937 and its subdirectories
-I: Current time: Mon Apr 10 07:47:08 -12 2023
-I: pbuilder-time-stamp: 1681156028
+I: removing directory /srv/workspace/pbuilder/21612 and its subdirectories
+I: Current time: Mon May 13 16:11:04 +14 2024
+I: pbuilder-time-stamp: 1715566264