Diff of the two buildlogs:

--
--- b1/build.log	2023-04-21 10:58:18.740322177 +0000
+++ b2/build.log	2023-04-21 11:01:10.884685690 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu Apr 20 22:55:51 -12 2023
-I: pbuilder-time-stamp: 1682074551
+I: Current time: Fri May 24 07:21:22 +14 2024
+I: pbuilder-time-stamp: 1716484882
 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 [./jlibeps_0.1.ds3.orig.tar.gz]
 I: copying [./jlibeps_0.1.ds3-6.debian.tar.xz]
 I: Extracting source
-gpgv: Signature made Sat Jan 28 19:58:27 2023 -12
+gpgv: Signature made Sun Jan 29 21:58:27 2023 +14
 gpgv:                using RSA key 90E2D2C1AD146A1B7EBB891DBBC17EBB1396F2F7
 gpgv: Can't check signature: No public key
 dpkg-source: warning: cannot verify inline signature for ./jlibeps_0.1.ds3-6.dsc: no acceptable signature found
@@ -25,52 +25,84 @@
 dpkg-source: info: unpacking jlibeps_0.1.ds3-6.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3712/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/18479/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
+'/bin/sh' -> '/bin/bash'
+lrwxrwxrwx 1 root root 9 May 24 07:21 /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/18479/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/18479/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='3712'
-  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=18479
   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.vcqQZ0hv/pbuilderrc_IwHF --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.vcqQZ0hv/b1 --logfile b1/build.log jlibeps_0.1.ds3-6.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.vcqQZ0hv/pbuilderrc_cR0A --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.vcqQZ0hv/b2 --logfile b2/build.log --extrapackages usrmerge jlibeps_0.1.ds3-6.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 codethink12-arm64 4.15.0-209-generic #220-Ubuntu SMP Tue Mar 21 19:52:44 UTC 2023 aarch64 GNU/Linux
+  Linux i-capture-the-hostname 4.15.0-209-generic #220-Ubuntu SMP Tue Mar 21 19:52:44 UTC 2023 aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Apr 20 22:25 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3712/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May 22 06:47 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/18479/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -253,7 +285,7 @@
 Get: 139 http://deb.debian.org/debian bookworm/main arm64 libjs-jquery-ui-theme-base all 1.12.1+dfsg-1.1 [44.3 kB]
 Get: 140 http://deb.debian.org/debian bookworm/main arm64 openjdk-17-doc all 17.0.6+10-1 [12.8 MB]
 Get: 141 http://deb.debian.org/debian bookworm/main arm64 default-jdk-doc arm64 2:1.17-74 [3020 B]
-Fetched 361 MB in 33s (11.0 MB/s)
+Fetched 361 MB in 49s (7321 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%
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(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
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(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19616 files and directories currently installed.)
@@ -1015,8 +1047,17 @@
 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/jlibeps-0.1.ds3/ && 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  > ../jlibeps_0.1.ds3-6_source.changes
+I: user script /srv/workspace/pbuilder/18479/tmp/hooks/A99_set_merged_usr starting
+Re-configuring usrmerge...
+I: user script /srv/workspace/pbuilder/18479/tmp/hooks/A99_set_merged_usr finished
+hostname: Temporary failure in name resolution
+I: Running cd /build/jlibeps-0.1.ds3/ && 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  > ../jlibeps_0.1.ds3-6_source.changes
 dpkg-buildpackage: info: source package jlibeps
 dpkg-buildpackage: info: source version 0.1.ds3-6
 dpkg-buildpackage: info: source distribution unstable
@@ -1026,11 +1067,11 @@
  debian/rules clean
 dh clean
    debian/rules override_dh_auto_clean
-make[1]: Entering directory '/build/jlibeps-0.1.ds3'
+make[1]: Map '/build/jlibeps-0.1.ds3' wordt binnengegaan
 find . -name \*.jar -exec rm -f {} \;
 find . -name \*.class -exec rm -f {} \;
 rm -rf out bin api
-make[1]: Leaving directory '/build/jlibeps-0.1.ds3'
+make[1]: Map '/build/jlibeps-0.1.ds3' wordt verlaten
    dh_clean
  debian/rules binary
 dh binary
@@ -1038,7 +1079,7 @@
    dh_autoreconf
    dh_auto_configure
    debian/rules override_dh_auto_build
-make[1]: Entering directory '/build/jlibeps-0.1.ds3'
+make[1]: Map '/build/jlibeps-0.1.ds3' wordt binnengegaan
 mkdir out bin
 ant -Dbasedir=. -f debian/build.xml compile
 Buildfile: /build/jlibeps-0.1.ds3/debian/build.xml
@@ -1057,7 +1098,7 @@
     [javac] 4 warnings
 
 BUILD SUCCESSFUL
-Total time: 8 seconds
+Total time: 7 seconds
 ant -Dbasedir=. -f debian/build.xml jar doc
 Buildfile: /build/jlibeps-0.1.ds3/debian/build.xml
 
@@ -1097,24 +1138,24 @@
   [javadoc] Generating /build/jlibeps-0.1.ds3/api/help-doc.html...
 
 BUILD SUCCESSFUL
-Total time: 13 seconds
-make[1]: Leaving directory '/build/jlibeps-0.1.ds3'
+Total time: 12 seconds
+make[1]: Map '/build/jlibeps-0.1.ds3' wordt verlaten
    dh_auto_test
    create-stamp debian/debhelper-build-stamp
    dh_prep
    dh_installdirs
    dh_auto_install
    debian/rules override_dh_install
-make[1]: Entering directory '/build/jlibeps-0.1.ds3'
+make[1]: Map '/build/jlibeps-0.1.ds3' wordt binnengegaan
 cp out/jlibeps.jar debian/libjlibeps-java/usr/share/java/net.sourceforge.jlibeps-0.1.jar
-make[1]: Leaving directory '/build/jlibeps-0.1.ds3'
+make[1]: Map '/build/jlibeps-0.1.ds3' wordt verlaten
    dh_installdocs
    dh_installchangelogs
    dh_perl
    debian/rules override_dh_link
-make[1]: Entering directory '/build/jlibeps-0.1.ds3'
+make[1]: Map '/build/jlibeps-0.1.ds3' wordt binnengegaan
 dh_link usr/share/java/net.sourceforge.jlibeps-0.1.jar usr/share/java/net.sourceforge.jlibeps.jar
-make[1]: Leaving directory '/build/jlibeps-0.1.ds3'
+make[1]: Map '/build/jlibeps-0.1.ds3' wordt verlaten
    dh_strip_nondeterminism
    dh_compress
    dh_fixperms
@@ -1123,8 +1164,8 @@
    dh_gencontrol
    dh_md5sums
    dh_builddeb
-dpkg-deb: building package 'libjlibeps-java' in '../libjlibeps-java_0.1.ds3-6_all.deb'.
-dpkg-deb: building package 'libjlibeps-java-doc' in '../libjlibeps-java-doc_0.1.ds3-6_all.deb'.
+dpkg-deb: pakket 'libjlibeps-java' wordt gebouwd in '../libjlibeps-java_0.1.ds3-6_all.deb'.
+dpkg-deb: pakket 'libjlibeps-java-doc' wordt gebouwd in '../libjlibeps-java-doc_0.1.ds3-6_all.deb'.
  dpkg-genbuildinfo --build=binary -O../jlibeps_0.1.ds3-6_arm64.buildinfo
  dpkg-genchanges --build=binary -O../jlibeps_0.1.ds3-6_arm64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -1132,12 +1173,14 @@
 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/18479/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/18479/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/3712 and its subdirectories
-I: Current time: Thu Apr 20 22:58:17 -12 2023
-I: pbuilder-time-stamp: 1682074697
+I: removing directory /srv/workspace/pbuilder/18479 and its subdirectories
+I: Current time: Fri May 24 07:24:09 +14 2024
+I: pbuilder-time-stamp: 1716485049