Diff of the two buildlogs:

--
--- b1/build.log	2023-04-12 11:05:31.287689043 +0000
+++ b2/build.log	2023-04-12 11:08:27.873844105 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Tue Apr 11 23:02:14 -12 2023
-I: pbuilder-time-stamp: 1681297334
+I: Current time: Wed May 15 07:28:35 +14 2024
+I: pbuilder-time-stamp: 1715707715
 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 [./mbt_3.6.orig.tar.gz]
 I: copying [./mbt_3.6-3.debian.tar.xz]
 I: Extracting source
-gpgv: Signature made Thu Apr 23 04:09:48 2020 -12
+gpgv: Signature made Fri Apr 24 06:09:48 2020 +14
 gpgv:                using RSA key 8AC624881EF2AC30C0E68E2C39FE11201A31555C
 gpgv: Can't check signature: No public key
 dpkg-source: warning: cannot verify inline signature for ./mbt_3.6-3.dsc: no acceptable signature found
@@ -25,11 +25,20 @@
 dpkg-source: info: unpacking mbt_3.6-3.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/29403/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/10268/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/10268/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/10268/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'
@@ -39,38 +48,38 @@
   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='29403'
+  PPID='10268'
   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.XPpX7YIs/pbuilderrc_Xwy4 --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.XPpX7YIs/b1 --logfile b1/build.log mbt_3.6-3.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.XPpX7YIs/pbuilderrc_kJTk --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.XPpX7YIs/b2 --logfile b2/build.log --extrapackages usrmerge mbt_3.6-3.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 10 22:26 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/29403/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May 15 06:47 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/10268/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -156,7 +165,7 @@
 Get: 40 http://deb.debian.org/debian bookworm/main arm64 pkgconf-bin arm64 1.8.1-1 [28.9 kB]
 Get: 41 http://deb.debian.org/debian bookworm/main arm64 pkgconf arm64 1.8.1-1 [25.9 kB]
 Get: 42 http://deb.debian.org/debian bookworm/main arm64 pkg-config arm64 1.8.1-1 [13.7 kB]
-Fetched 30.6 MB in 1s (40.2 MB/s)
+Fetched 30.6 MB in 1s (48.2 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.)
@@ -338,8 +347,17 @@
 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/mbt-3.6/ && 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  > ../mbt_3.6-3_source.changes
+I: user script /srv/workspace/pbuilder/10268/tmp/hooks/A99_set_merged_usr starting
+Re-configuring usrmerge...
+I: user script /srv/workspace/pbuilder/10268/tmp/hooks/A99_set_merged_usr finished
+hostname: Temporary failure in name resolution
+I: Running cd /build/mbt-3.6/ && 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  > ../mbt_3.6-3_source.changes
 dpkg-buildpackage: info: source package mbt
 dpkg-buildpackage: info: source version 3.6-3
 dpkg-buildpackage: info: source distribution unstable
@@ -512,18 +530,18 @@
 /bin/bash ../libtool  --tag=CXX   --mode=compile g++ -DHAVE_CONFIG_H -I. -I..  -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security  -I/usr/include/libxml2  -fopenmp  -c -o RunTagger.lo RunTagger.cxx
 /bin/bash ../libtool  --tag=CXX   --mode=compile g++ -DHAVE_CONFIG_H -I. -I..  -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security  -I/usr/include/libxml2  -fopenmp  -c -o GenerateTagger.lo GenerateTagger.cxx
 /bin/bash ../libtool  --tag=CXX   --mode=compile g++ -DHAVE_CONFIG_H -I. -I..  -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security  -I/usr/include/libxml2  -fopenmp  -c -o Tagger.lo Tagger.cxx
-libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -c GenerateTagger.cxx  -fPIC -DPIC -o .libs/GenerateTagger.o
 libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -c TagLex.cxx  -fPIC -DPIC -o .libs/TagLex.o
 libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -c MbtAPI.cxx  -fPIC -DPIC -o .libs/MbtAPI.o
-libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -c Sentence.cxx  -fPIC -DPIC -o .libs/Sentence.o
 libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -c Pattern.cxx  -fPIC -DPIC -o .libs/Pattern.o
 libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -c Tagger.cxx  -fPIC -DPIC -o .libs/Tagger.o
+libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -c GenerateTagger.cxx  -fPIC -DPIC -o .libs/GenerateTagger.o
 libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -c RunTagger.cxx  -fPIC -DPIC -o .libs/RunTagger.o
+libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -c Sentence.cxx  -fPIC -DPIC -o .libs/Sentence.o
 libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -c Pattern.cxx -o Pattern.o >/dev/null 2>&1
 g++ -DHAVE_CONFIG_H -I. -I..  -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security  -I/usr/include/libxml2  -fopenmp  -c -o Mbtg.o Mbtg.cxx
 libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -c Sentence.cxx -o Sentence.o >/dev/null 2>&1
-g++ -DHAVE_CONFIG_H -I. -I..  -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security  -I/usr/include/libxml2  -fopenmp  -c -o convert.o convert.cxx
 libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -c TagLex.cxx -o TagLex.o >/dev/null 2>&1
+g++ -DHAVE_CONFIG_H -I. -I..  -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security  -I/usr/include/libxml2  -fopenmp  -c -o convert.o convert.cxx
 libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -c MbtAPI.cxx -o MbtAPI.o >/dev/null 2>&1
 libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -c Tagger.cxx -o Tagger.o >/dev/null 2>&1
 libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../include -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -c GenerateTagger.cxx -o GenerateTagger.o >/dev/null 2>&1
@@ -538,9 +556,9 @@
 /bin/bash ../libtool  --tag=CXX   --mode=link g++ -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security  -I/usr/include/libxml2  -fopenmp   -Wl,-z,relro -o mbt Mbt.o libmbt.la -ltimbl  -lticcutils 
 /bin/bash ../libtool  --tag=CXX   --mode=link g++ -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security  -I/usr/include/libxml2  -fopenmp   -Wl,-z,relro -o mbtg Mbtg.o libmbt.la -ltimbl  -lticcutils 
 /bin/bash ../libtool  --tag=CXX   --mode=link g++ -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security  -I/usr/include/libxml2  -fopenmp   -Wl,-z,relro -o convert convert.o libmbt.la -ltimbl  -lticcutils 
+libtool: link: g++ -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -Wl,-z -Wl,relro -o .libs/mbtg Mbtg.o  ./.libs/libmbt.so -ltimbl -lticcutils -fopenmp
 libtool: link: g++ -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -Wl,-z -Wl,relro -o .libs/convert convert.o  ./.libs/libmbt.so -ltimbl -lticcutils -fopenmp
 libtool: link: g++ -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -Wl,-z -Wl,relro -o .libs/mbt Mbt.o  ./.libs/libmbt.so -ltimbl -lticcutils -fopenmp
-libtool: link: g++ -std=c++11 -W -Wall -g -pedantic -O3 -g -O2 -ffile-prefix-map=/build/mbt-3.6=. -fstack-protector-strong -Wformat -Werror=format-security -I/usr/include/libxml2 -fopenmp -Wl,-z -Wl,relro -o .libs/mbtg Mbtg.o  ./.libs/libmbt.so -ltimbl -lticcutils -fopenmp
 make[3]: Leaving directory '/build/mbt-3.6/src'
 Making all in include
 make[3]: Entering directory '/build/mbt-3.6/include'
@@ -720,10 +738,10 @@
    dh_md5sums
    dh_builddeb
 dpkg-deb: building package 'mbt' in '../mbt_3.6-3_arm64.deb'.
-dpkg-deb: building package 'libmbt1-dbgsym' in '../libmbt1-dbgsym_3.6-3_arm64.deb'.
 dpkg-deb: building package 'libmbt-dev' in '../libmbt-dev_3.6-3_arm64.deb'.
-dpkg-deb: building package 'libmbt1' in '../libmbt1_3.6-3_arm64.deb'.
 dpkg-deb: building package 'mbt-dbgsym' in '../mbt-dbgsym_3.6-3_arm64.deb'.
+dpkg-deb: building package 'libmbt1' in '../libmbt1_3.6-3_arm64.deb'.
+dpkg-deb: building package 'libmbt1-dbgsym' in '../libmbt1-dbgsym_3.6-3_arm64.deb'.
  dpkg-genbuildinfo --build=binary -O../mbt_3.6-3_arm64.buildinfo
  dpkg-genchanges --build=binary -O../mbt_3.6-3_arm64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -731,12 +749,14 @@
 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/10268/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/10268/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/29403 and its subdirectories
-I: Current time: Tue Apr 11 23:05:30 -12 2023
-I: pbuilder-time-stamp: 1681297530
+I: removing directory /srv/workspace/pbuilder/10268 and its subdirectories
+I: Current time: Wed May 15 07:31:26 +14 2024
+I: pbuilder-time-stamp: 1715707886