Diff of the two buildlogs:

--
--- b1/build.log	2023-04-28 14:01:23.396644901 +0000
+++ b2/build.log	2023-04-28 14:02:50.676781609 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu May 30 08:23:03 -12 2024
-I: pbuilder-time-stamp: 1717100583
+I: Current time: Sat Apr 29 04:01:27 +14 2023
+I: pbuilder-time-stamp: 1682690487
 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-messagepack-perl_1.02.orig.tar.gz]
 I: copying [./libdata-messagepack-perl_1.02-1.debian.tar.xz]
 I: Extracting source
-gpgv: Signature made Sat Mar 19 06:09:17 2022 -12
+gpgv: Signature made Sun Mar 20 08:09:17 2022 +14
 gpgv:                using RSA key D1E1316E93A760A8104D85FABB3A68018649AA06
 gpgv: Can't check signature: No public key
 dpkg-source: warning: cannot verify inline signature for ./libdata-messagepack-perl_1.02-1.dsc: no acceptable signature found
@@ -29,52 +29,84 @@
 dpkg-source: info: applying msgpack-3.diff
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/4179/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/25476/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink12-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 Apr 29 04:01 /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/25476/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/25476/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='4179'
-  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=25476
   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.HnJshBJy/pbuilderrc_waNM --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.HnJshBJy/b1 --logfile b1/build.log libdata-messagepack-perl_1.02-1.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.HnJshBJy/pbuilderrc_cFNe --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.HnJshBJy/b2 --logfile b2/build.log --extrapackages usrmerge libdata-messagepack-perl_1.02-1.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 codethink11-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 30 04:48 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/4179/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Apr 28 00:25 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/25476/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -163,7 +195,7 @@
 Get: 39 http://deb.debian.org/debian bookworm/main arm64 libmsgpack-dev arm64 4.0.0-3 [37.1 kB]
 Get: 40 http://deb.debian.org/debian bookworm/main arm64 libtest-leaktrace-perl arm64 0.17-1+b2 [20.0 kB]
 Get: 41 http://deb.debian.org/debian bookworm/main arm64 libtest-requires-perl all 0.11-1 [6964 B]
-Fetched 28.4 MB in 1s (30.7 MB/s)
+Fetched 28.4 MB in 1s (44.5 MB/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.)
@@ -343,8 +375,17 @@
 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-messagepack-perl-1.02/ && 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-messagepack-perl_1.02-1_source.changes
+I: user script /srv/workspace/pbuilder/25476/tmp/hooks/A99_set_merged_usr starting
+Re-configuring usrmerge...
+I: user script /srv/workspace/pbuilder/25476/tmp/hooks/A99_set_merged_usr finished
+hostname: Temporary failure in name resolution
+I: Running cd /build/libdata-messagepack-perl-1.02/ && 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-messagepack-perl_1.02-1_source.changes
 dpkg-buildpackage: info: source package libdata-messagepack-perl
 dpkg-buildpackage: info: source version 1.02-1
 dpkg-buildpackage: info: source distribution unstable
@@ -680,22 +721,22 @@
 ok
 t/04_invert.t ............... 
 1..44
-ok 1 - dump ARRAY(0xaaaad2660dc8)
-ok 2 - dump ARRAY(0xaaaad2660ed0)
-ok 3 - dump ARRAY(0xaaaad26612d8)
-ok 4 - dump ARRAY(0xaaaad2661368)
-ok 5 - dump HASH(0xaaaad26615d8)
-ok 6 - dump HASH(0xaaaad2661668)
-ok 7 - dump HASH(0xaaaad26616f8)
+ok 1 - dump ARRAY(0xaaaae5d341b8)
+ok 2 - dump ARRAY(0xaaaae5d342c0)
+ok 3 - dump ARRAY(0xaaaae5d346c8)
+ok 4 - dump ARRAY(0xaaaae5d34758)
+ok 5 - dump HASH(0xaaaae5d349c8)
+ok 6 - dump HASH(0xaaaae5d34a58)
+ok 7 - dump HASH(0xaaaae5d34ae8)
 ok 8 - dump 2147483648
-ok 9 - dump ARRAY(0xaaaad2675d38)
-ok 10 - dump ARRAY(0xaaaad265f570)
-ok 11 - dump ARRAY(0xaaaad1e9d220)
-ok 12 - dump ARRAY(0xaaaad26b4e60)
-ok 13 - dump ARRAY(0xaaaad26b4cc8)
-ok 14 - dump HASH(0xaaaad26b4aa0)
-ok 15 - dump ARRAY(0xaaaad26c95e0)
-ok 16 - dump ARRAY(0xaaaad26c9670)
+ok 9 - dump ARRAY(0xaaaae5d3ddf8)
+ok 10 - dump ARRAY(0xaaaae5d27610)
+ok 11 - dump ARRAY(0xaaaae5566240)
+ok 12 - dump ARRAY(0xaaaae5d7c7a0)
+ok 13 - dump ARRAY(0xaaaae5d7c608)
+ok 14 - dump HASH(0xaaaae5d7c3e0)
+ok 15 - dump ARRAY(0xaaaae5d91080)
+ok 16 - dump ARRAY(0xaaaae5d910c8)
 ok 17 - dump 16777215
 ok 18 - dump 4294967295
 ok 19 - dump 68719476735
@@ -1656,7 +1697,7 @@
 #   Failed (TODO) test at t/23-empty-key.t line 46.
 #     Structures begin differing at:
 #          $got->[1][1]{} = Does not exist
-#     $expected->[1][1]{} = HASH(0xaaaaeb11e1f0)
+#     $expected->[1][1]{} = HASH(0xaaaaee3ec010)
 # [
 #   [
 #     [
@@ -1726,7 +1767,7 @@
 ok
 t/50_leaktrace.t ............ skipped: disabled in PP
 All tests successful.
-Files=27, Tests=569,  9 wallclock secs ( 0.32 usr  0.13 sys +  7.24 cusr  0.91 csys =  8.60 CPU)
+Files=27, Tests=569, 10 wallclock secs ( 0.34 usr  0.13 sys +  7.48 cusr  0.90 csys =  8.85 CPU)
 Result: PASS
 xs tests
 # Testing Data::MessagePack/1.02 (XS)
@@ -1890,22 +1931,22 @@
 ok
 t/04_invert.t ............... 
 1..44
-ok 1 - dump ARRAY(0xaaaadab19a38)
-ok 2 - dump ARRAY(0xaaaadab199f0)
-ok 3 - dump ARRAY(0xaaaadab1a170)
-ok 4 - dump ARRAY(0xaaaadab6c9c0)
-ok 5 - dump HASH(0xaaaadab6c918)
-ok 6 - dump HASH(0xaaaada3d92d8)
-ok 7 - dump HASH(0xaaaada3d9248)
+ok 1 - dump ARRAY(0xaaaae72c5368)
+ok 2 - dump ARRAY(0xaaaae72c5320)
+ok 3 - dump ARRAY(0xaaaae72c5a88)
+ok 4 - dump ARRAY(0xaaaae7318260)
+ok 5 - dump HASH(0xaaaae73181b8)
+ok 6 - dump HASH(0xaaaae6b875c8)
+ok 7 - dump HASH(0xaaaae6b87538)
 ok 8 - dump 2147483648
-ok 9 - dump ARRAY(0xaaaada3d91e8)
-ok 10 - dump ARRAY(0xaaaadab6ce88)
-ok 11 - dump ARRAY(0xaaaadab6d170)
-ok 12 - dump ARRAY(0xaaaadab6d1e8)
-ok 13 - dump ARRAY(0xaaaadab6d338)
-ok 14 - dump HASH(0xaaaadab6d4e8)
-ok 15 - dump ARRAY(0xaaaadab59d98)
-ok 16 - dump ARRAY(0xaaaadab59e58)
+ok 9 - dump ARRAY(0xaaaae6b874d8)
+ok 10 - dump ARRAY(0xaaaae7318878)
+ok 11 - dump ARRAY(0xaaaae7318a28)
+ok 12 - dump ARRAY(0xaaaae7318b78)
+ok 13 - dump ARRAY(0xaaaae7318c20)
+ok 14 - dump HASH(0xaaaae7318da0)
+ok 15 - dump ARRAY(0xaaaae7305688)
+ok 16 - dump ARRAY(0xaaaae7305748)
 ok 17 - dump 16777215
 ok 18 - dump 4294967295
 ok 19 - dump 68719476735
@@ -2866,7 +2907,7 @@
 #   Failed (TODO) test at t/23-empty-key.t line 46.
 #     Structures begin differing at:
 #          $got->[1] = '��ZZZ�'
-#     $expected->[1] = ARRAY(0xaaaad5109d88)
+#     $expected->[1] = ARRAY(0xaaab09bcd628)
 # [
 #   [
 #     [
@@ -2927,8 +2968,8 @@
 t/50_leaktrace.t ............ 
 # pack
 ok 1 - leaks 0 <= 0
-# cannot encode reference to scalar 'GLOB(0xaaab00ee50b8)' unless the scalar is 0 or 1 at t/50_leaktrace.t line 28.
-# cannot encode reference to scalar 'GLOB(0xaaab00ee50b8)' unless the scalar is 0 or 1 at t/50_leaktrace.t line 28.
+# cannot encode reference to scalar 'GLOB(0xaaaac643d0f8)' unless the scalar is 0 or 1 at t/50_leaktrace.t line 28.
+# cannot encode reference to scalar 'GLOB(0xaaaac643d0f8)' unless the scalar is 0 or 1 at t/50_leaktrace.t line 28.
 ok 2 - leaks 0 <= 0
 # unpack
 ok 3 - leaks 0 <= 0
@@ -2941,7 +2982,7 @@
 1..6
 ok
 All tests successful.
-Files=27, Tests=575,  9 wallclock secs ( 0.25 usr  0.12 sys +  6.32 cusr  0.75 csys =  7.44 CPU)
+Files=27, Tests=575,  8 wallclock secs ( 0.29 usr  0.13 sys +  6.88 cusr  0.88 csys =  8.18 CPU)
 Result: PASS
    create-stamp debian/debhelper-build-stamp
    dh_prep
@@ -2984,12 +3025,14 @@
 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/25476/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/25476/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/4179 and its subdirectories
-I: Current time: Thu May 30 08:24:22 -12 2024
-I: pbuilder-time-stamp: 1717100662
+I: removing directory /srv/workspace/pbuilder/25476 and its subdirectories
+I: Current time: Sat Apr 29 04:02:49 +14 2023
+I: pbuilder-time-stamp: 1682690569