Diff of the two buildlogs:

--
--- b1/build.log	2023-04-15 01:58:23.197626418 +0000
+++ b2/build.log	2023-04-15 01:59:59.857335612 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Fri Apr 14 13:56:50 -12 2023
-I: pbuilder-time-stamp: 1681523810
+I: Current time: Fri May 17 22:21:25 +14 2024
+I: pbuilder-time-stamp: 1715934085
 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 [./herisvm_0.9.0.orig.tar.gz]
 I: copying [./herisvm_0.9.0-2.debian.tar.xz]
 I: Extracting source
-gpgv: Signature made Mon Jan 25 14:13:33 2021 -12
+gpgv: Signature made Tue Jan 26 16:13:33 2021 +14
 gpgv:                using RSA key B3F51A2712619C3ECD74B8E178494EF72375A66C
 gpgv:                issuer "giovani@debian.org"
 gpgv: Can't check signature: No public key
@@ -26,11 +26,20 @@
 dpkg-source: info: unpacking herisvm_0.9.0-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/30055/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/17985/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink9-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/17985/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/17985/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'
@@ -40,38 +49,38 @@
   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='30055'
+  PPID='17985'
   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.cWuiW9Tx/pbuilderrc_4Igz --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.cWuiW9Tx/b1 --logfile b1/build.log herisvm_0.9.0-2.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.cWuiW9Tx/pbuilderrc_v40g --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.cWuiW9Tx/b2 --logfile b2/build.log --extrapackages usrmerge herisvm_0.9.0-2.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 codethink14-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 12 22:50 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/30055/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May 15 06:47 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/17985/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -165,7 +174,7 @@
 Get: 51 http://deb.debian.org/debian bookworm/main arm64 libruby3.1 arm64 3.1.2-7 [5248 kB]
 Get: 52 http://deb.debian.org/debian bookworm/main arm64 libruby arm64 1:3.1 [4968 B]
 Get: 53 http://deb.debian.org/debian bookworm/main arm64 mk-configure all 0.37.0-2 [322 kB]
-Fetched 28.2 MB in 2s (13.7 MB/s)
+Fetched 28.2 MB in 1s (45.3 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package readline-common.
 (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.)
@@ -399,8 +408,17 @@
 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/herisvm-0.9.0/ && 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  > ../herisvm_0.9.0-2_source.changes
+I: user script /srv/workspace/pbuilder/17985/tmp/hooks/A99_set_merged_usr starting
+Re-configuring usrmerge...
+I: user script /srv/workspace/pbuilder/17985/tmp/hooks/A99_set_merged_usr finished
+hostname: Temporary failure in name resolution
+I: Running cd /build/herisvm-0.9.0/ && 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  > ../herisvm_0.9.0-2_source.changes
 dpkg-buildpackage: info: source package herisvm
 dpkg-buildpackage: info: source version 0.9.0-2
 dpkg-buildpackage: info: source distribution unstable
@@ -533,8 +551,8 @@
     heri-split #13.1 -R... ./test.sh: 389: test: 1525939314: unexpected operator
 ./test.sh: 390: test: 2630951011: unexpected operator
 FAILED
-   --- /tmp/herisvm.4378/1	2023-04-14 13:57:41.632734441 -1200
-   +++ /tmp/herisvm.4378/2	2023-04-14 13:57:42.128735636 -1200
+   --- /tmp/herisvm.25275/1	2024-05-17 22:22:17.525607340 +1400
+   +++ /tmp/herisvm.25275/2	2024-05-17 22:22:18.025607340 +1400
    @@ -1,2 +1,2 @@
    -cksum1 ok
    -cksum2 ok
@@ -543,8 +561,8 @@
     heri-split #13.2 -R... ./test.sh: 406: test: 2095306859: unexpected operator
 ./test.sh: 407: test: 534497025: unexpected operator
 FAILED
-   --- /tmp/herisvm.4378/1	2023-04-14 13:57:42.136735656 -1200
-   +++ /tmp/herisvm.4378/2	2023-04-14 13:57:42.644736880 -1200
+   --- /tmp/herisvm.25275/1	2024-05-17 22:22:18.033607340 +1400
+   +++ /tmp/herisvm.25275/2	2024-05-17 22:22:18.529607340 +1400
    @@ -1,2 +1,2 @@
    -cksum1 ok
    -cksum2 ok
@@ -552,15 +570,15 @@
    +cksum2 check failed
     heri-split #13.3 -R... ./test.sh: 421: test: 901762028: unexpected operator
 FAILED
-   --- /tmp/herisvm.4378/1	2023-04-14 13:57:42.652736899 -1200
-   +++ /tmp/herisvm.4378/2	2023-04-14 13:57:43.176738163 -1200
+   --- /tmp/herisvm.25275/1	2024-05-17 22:22:18.537607340 +1400
+   +++ /tmp/herisvm.25275/2	2024-05-17 22:22:19.029607340 +1400
    @@ -1 +1 @@
    -cksum ok
    +cksum check failed
     heri-split #13.4 -R... ./test.sh: 434: test: 534497025: unexpected operator
 FAILED
-   --- /tmp/herisvm.4378/1	2023-04-14 13:57:43.180738172 -1200
-   +++ /tmp/herisvm.4378/2	2023-04-14 13:57:43.648739301 -1200
+   --- /tmp/herisvm.25275/1	2024-05-17 22:22:19.037607340 +1400
+   +++ /tmp/herisvm.25275/2	2024-05-17 22:22:19.541607340 +1400
    @@ -1 +1 @@
    -cksum ok
    +cksum check failed
@@ -603,21 +621,21 @@
 ==================================================
 install ===> doc
 mkc_install -c -d -m 755 /build/herisvm-0.9.0/debian/herisvm/usr/share/doc/herisvm
-mkc_install  -c  -o pbuilder1  -g pbuilder1  -m 644  LICENSE /build/herisvm-0.9.0/debian/herisvm/usr/share/doc/herisvm/LICENSE
-mkc_install  -c  -o pbuilder1  -g pbuilder1  -m 644  NEWS /build/herisvm-0.9.0/debian/herisvm/usr/share/doc/herisvm/NEWS
-mkc_install  -c  -o pbuilder1  -g pbuilder1  -m 644  ../README /build/herisvm-0.9.0/debian/herisvm/usr/share/doc/herisvm/README
-mkc_install  -c  -o pbuilder1  -g pbuilder1  -m 644  TODO /build/herisvm-0.9.0/debian/herisvm/usr/share/doc/herisvm/TODO
+mkc_install  -c  -o pbuilder2  -g pbuilder2  -m 644  LICENSE /build/herisvm-0.9.0/debian/herisvm/usr/share/doc/herisvm/LICENSE
+mkc_install  -c  -o pbuilder2  -g pbuilder2  -m 644  NEWS /build/herisvm-0.9.0/debian/herisvm/usr/share/doc/herisvm/NEWS
+mkc_install  -c  -o pbuilder2  -g pbuilder2  -m 644  ../README /build/herisvm-0.9.0/debian/herisvm/usr/share/doc/herisvm/README
+mkc_install  -c  -o pbuilder2  -g pbuilder2  -m 644  TODO /build/herisvm-0.9.0/debian/herisvm/usr/share/doc/herisvm/TODO
 ==================================================
 install ===> scripts
 mkc_install -c -d -m 755 /build/herisvm-0.9.0/debian/herisvm/usr/bin /build/herisvm-0.9.0/debian/herisvm/usr/share/man/man1
-mkc_install  -c  -o pbuilder1 -g pbuilder1 -m 644 heri-eval.1 /build/herisvm-0.9.0/debian/herisvm/usr/share/man/man1/heri-eval.1
-mkc_install  -c  -o pbuilder1 -g pbuilder1 -m 644 heri-split.1 /build/herisvm-0.9.0/debian/herisvm/usr/share/man/man1/heri-split.1
-mkc_install  -c  -o pbuilder1 -g pbuilder1 -m 644 heri-stat.1 /build/herisvm-0.9.0/debian/herisvm/usr/share/man/man1/heri-stat.1
-mkc_install  -c  -o pbuilder1 -g pbuilder1 -m 644 heri-stat-addons.1 /build/herisvm-0.9.0/debian/herisvm/usr/share/man/man1/heri-stat-addons.1
-mkc_install -c  -o pbuilder1  -g pbuilder1  -m 755  heri-eval /build/herisvm-0.9.0/debian/herisvm/usr/bin/heri-eval
-mkc_install -c  -o pbuilder1  -g pbuilder1  -m 755  heri-split /build/herisvm-0.9.0/debian/herisvm/usr/bin/heri-split
-mkc_install -c  -o pbuilder1  -g pbuilder1  -m 755  heri-stat /build/herisvm-0.9.0/debian/herisvm/usr/bin/heri-stat
-mkc_install -c  -o pbuilder1  -g pbuilder1  -m 755  heri-stat-addons /build/herisvm-0.9.0/debian/herisvm/usr/bin/heri-stat-addons
+mkc_install  -c  -o pbuilder2 -g pbuilder2 -m 644 heri-eval.1 /build/herisvm-0.9.0/debian/herisvm/usr/share/man/man1/heri-eval.1
+mkc_install  -c  -o pbuilder2 -g pbuilder2 -m 644 heri-split.1 /build/herisvm-0.9.0/debian/herisvm/usr/share/man/man1/heri-split.1
+mkc_install  -c  -o pbuilder2 -g pbuilder2 -m 644 heri-stat.1 /build/herisvm-0.9.0/debian/herisvm/usr/share/man/man1/heri-stat.1
+mkc_install  -c  -o pbuilder2 -g pbuilder2 -m 644 heri-stat-addons.1 /build/herisvm-0.9.0/debian/herisvm/usr/share/man/man1/heri-stat-addons.1
+mkc_install -c  -o pbuilder2  -g pbuilder2  -m 755  heri-eval /build/herisvm-0.9.0/debian/herisvm/usr/bin/heri-eval
+mkc_install -c  -o pbuilder2  -g pbuilder2  -m 755  heri-split /build/herisvm-0.9.0/debian/herisvm/usr/bin/heri-split
+mkc_install -c  -o pbuilder2  -g pbuilder2  -m 755  heri-stat /build/herisvm-0.9.0/debian/herisvm/usr/bin/heri-stat
+mkc_install -c  -o pbuilder2  -g pbuilder2  -m 755  heri-stat-addons /build/herisvm-0.9.0/debian/herisvm/usr/bin/heri-stat-addons
 ==================================================
 install ===> tests
    debian/rules execute_after_dh_auto_install
@@ -648,12 +666,14 @@
 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/17985/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/17985/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/30055 and its subdirectories
-I: Current time: Fri Apr 14 13:58:22 -12 2023
-I: pbuilder-time-stamp: 1681523902
+I: removing directory /srv/workspace/pbuilder/17985 and its subdirectories
+I: Current time: Fri May 17 22:22:58 +14 2024
+I: pbuilder-time-stamp: 1715934178