Diff of the two buildlogs:

--
--- b1/build.log	2023-04-09 16:05:03.466644209 +0000
+++ b2/build.log	2023-04-09 16:08:58.338807160 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sat May 11 10:25:46 -12 2024
-I: pbuilder-time-stamp: 1715466346
+I: Current time: Mon Apr 10 06:05:06 +14 2023
+I: pbuilder-time-stamp: 1681056306
 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 [./php-maxminddb_1.11.0.orig.tar.gz]
 I: copying [./php-maxminddb_1.11.0-5.debian.tar.xz]
 I: Extracting source
-gpgv: Signature made Thu Jan 12 00:55:30 2023 -12
+gpgv: Signature made Fri Jan 13 02:55:30 2023 +14
 gpgv:                using RSA key C361B1E3029543EBC625E97D8372A477EFAE59C2
 gpgv: Can't check signature: No public key
 dpkg-source: warning: cannot verify inline signature for ./php-maxminddb_1.11.0-5.dsc: no acceptable signature found
@@ -25,11 +25,20 @@
 dpkg-source: info: unpacking php-maxminddb_1.11.0-5.debian.tar.xz
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/6097/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/20625/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink16-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 03:20 /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/20625/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/20625/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='6097'
+  PPID='20625'
   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.OwnKaY3q/pbuilderrc_X4qb --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.OwnKaY3q/b1 --logfile b1/build.log php-maxminddb_1.11.0-5.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.OwnKaY3q/pbuilderrc_rm2b --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.OwnKaY3q/b2 --logfile b2/build.log --extrapackages usrmerge php-maxminddb_1.11.0-5.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 codethink13-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 May 10 04:48 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/6097/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Apr  9 00:25 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/20625/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -177,7 +186,7 @@
 Get: 63 http://deb.debian.org/debian bookworm/main arm64 php8.2-mbstring arm64 8.2.4-1 [428 kB]
 Get: 64 http://deb.debian.org/debian bookworm/main arm64 php8.2-xml arm64 8.2.4-1 [97.4 kB]
 Get: 65 http://deb.debian.org/debian bookworm/main arm64 php-all-dev all 2:93 [3532 B]
-Fetched 27.1 MB in 1s (38.4 MB/s)
+Fetched 27.1 MB in 1s (50.6 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.)
@@ -515,10 +524,15 @@
 Reading package lists...
 Building dependency tree...
 Reading state information...
+usrmerge is already the newest version (35).
 fakeroot is already the newest version (1.31-1.2).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/php-maxminddb-1.11.0/ && 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  > ../php-maxminddb_1.11.0-5_source.changes
+I: user script /srv/workspace/pbuilder/20625/tmp/hooks/A99_set_merged_usr starting
+Re-configuring usrmerge...
+I: user script /srv/workspace/pbuilder/20625/tmp/hooks/A99_set_merged_usr finished
+hostname: Temporary failure in name resolution
+I: Running cd /build/php-maxminddb-1.11.0/ && 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  > ../php-maxminddb_1.11.0-5_source.changes
 dpkg-buildpackage: info: source package php-maxminddb
 dpkg-buildpackage: info: source version 1.11.0-5
 dpkg-buildpackage: info: source distribution unstable
@@ -664,7 +678,7 @@
 /bin/bash /build/php-maxminddb-1.11.0/build-8.2/libtool --mode=install cp ./maxminddb.la /build/php-maxminddb-1.11.0/build-8.2/modules
 libtool: install: cp ./.libs/maxminddb.so /build/php-maxminddb-1.11.0/build-8.2/modules/maxminddb.so
 libtool: install: cp ./.libs/maxminddb.lai /build/php-maxminddb-1.11.0/build-8.2/modules/maxminddb.la
-libtool: finish: PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/sbin" ldconfig -n /build/php-maxminddb-1.11.0/build-8.2/modules
+libtool: finish: PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path:/sbin" ldconfig -n /build/php-maxminddb-1.11.0/build-8.2/modules
 ----------------------------------------------------------------------
 Libraries have been installed in:
    /build/php-maxminddb-1.11.0/build-8.2/modules
@@ -706,20 +720,20 @@
 PHP_SAPI    : cli
 PHP_VERSION : 8.2.4
 ZEND_VERSION: 4.2.4
-PHP_OS      : Linux - Linux codethink13-arm64 4.15.0-208-generic #220-Ubuntu SMP Mon Mar 20 14:28:12 UTC 2023 aarch64
+PHP_OS      : Linux - Linux i-capture-the-hostname 4.15.0-208-generic #220-Ubuntu SMP Mon Mar 20 14:28:12 UTC 2023 aarch64
 INI actual  : /build/php-maxminddb-1.11.0/build-8.2/tmp-php.ini
 More .INIs  :   
 CWD         : /build/php-maxminddb-1.11.0/build-8.2
 Extra dirs  : 
 VALGRIND    : Not used
 =====================================================================
-TIME START 2024-05-11 22:27:29
+TIME START 2023-04-09 16:06:04
 =====================================================================
 TEST 1/3 [tests/001-load.phpt]
PASS Check for maxminddb presence [tests/001-load.phpt] 
 TEST 2/3 [tests/002-final.phpt]
PASS Check that Reader class is not final [tests/002-final.phpt] 
 TEST 3/3 [tests/003-open-basedir.phpt]
PASS openbase_dir is followed [tests/003-open-basedir.phpt] 
 =====================================================================
-TIME END 2024-05-11 22:27:30
+TIME END 2023-04-09 16:06:04
 
 =====================================================================
 TEST RESULT SUMMARY
@@ -734,7 +748,7 @@
 Tests failed    :    0 (  0.0%) (  0.0%)
 Tests passed    :    3 (100.0%) (100.0%)
 ---------------------------------------------------------------------
-Time taken      :    1 seconds
+Time taken      :    0 seconds
 =====================================================================
 make[2]: Leaving directory '/build/php-maxminddb-1.11.0/build-8.2'
 touch test-8.2-stamp
@@ -778,7 +792,7 @@
    dh_strip
    dh_makeshlibs
    dh_shlibdeps
-dpkg-shlibdeps: warning: debian/php8.2-maxminddb/usr/lib/php/20220829/maxminddb.so contains an unresolvable reference to symbol zend_update_property: it's probably a plugin
+dpkg-shlibdeps: warning: debian/php8.2-maxminddb/usr/lib/php/20220829/maxminddb.so contains an unresolvable reference to symbol zval_ptr_dtor: it's probably a plugin
 dpkg-shlibdeps: warning: 32 other similar warnings have been skipped (use -v to see them all)
    dh_installdeb
    debian/rules override_dh_gencontrol
@@ -823,8 +837,8 @@
    dh_builddeb
 dpkg-deb: building package 'php-maxminddb' in '../php-maxminddb_1.11.0-5_arm64.deb'.
 dpkg-deb: building package 'php-maxminddb-all-dev' in '../php-maxminddb-all-dev_1.11.0-5_all.deb'.
-dpkg-deb: building package 'php8.2-maxminddb-dbgsym' in '../php8.2-maxminddb-dbgsym_1.11.0-5_arm64.deb'.
 dpkg-deb: building package 'php8.2-maxminddb' in '../php8.2-maxminddb_1.11.0-5_arm64.deb'.
+dpkg-deb: building package 'php8.2-maxminddb-dbgsym' in '../php8.2-maxminddb-dbgsym_1.11.0-5_arm64.deb'.
  dpkg-genbuildinfo --build=binary -O../php-maxminddb_1.11.0-5_arm64.buildinfo
  dpkg-genchanges --build=binary -O../php-maxminddb_1.11.0-5_arm64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -832,12 +846,14 @@
 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/20625/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/20625/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/6097 and its subdirectories
-I: Current time: Sat May 11 10:28:02 -12 2024
-I: pbuilder-time-stamp: 1715466482
+I: removing directory /srv/workspace/pbuilder/20625 and its subdirectories
+I: Current time: Mon Apr 10 06:06:20 +14 2023
+I: pbuilder-time-stamp: 1681056380