Diff of the two buildlogs:

--
--- b1/build.log	2025-03-17 20:35:25.932183337 +0000
+++ b2/build.log	2025-03-17 20:40:42.014036781 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Mar 17 08:30:40 -12 2025
-I: pbuilder-time-stamp: 1742243440
+I: Current time: Tue Mar 18 10:35:36 +14 2025
+I: pbuilder-time-stamp: 1742243736
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -26,52 +26,84 @@
 dpkg-source: info: applying 0003-Use-mimicked-install-path.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/29771/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/9041/tmp/hooks/D01_modify_environment starting
+debug: Running on virt64c.
+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 Mar 17 20:35 /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/9041/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/9041/tmp/hooks/D02_print_environment starting
 I: set
-  BUILDDIR='/build/reproducible-path'
-  BUILDUSERGECOS='first user,first room,first work-phone,first home-phone,first other'
-  BUILDUSERNAME='pbuilder1'
-  BUILD_ARCH='armhf'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=3 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='armhf'
+  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]="37" [3]="1" [4]="release" [5]="arm-unknown-linux-gnueabihf")
+  BASH_VERSION='5.2.37(1)-release'
+  BUILDDIR=/build/reproducible-path
+  BUILDUSERGECOS='second user,second room,second work-phone,second home-phone,second other'
+  BUILDUSERNAME=pbuilder2
+  BUILD_ARCH=armhf
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=4 '
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=arm
+  HOST_ARCH=armhf
   IFS=' 	
   '
-  INVOCATION_ID='3f696206c0264f5884cec73f13c32a90'
-  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='29771'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=d1b8b1aa759449bc8023f5485d234dc0
+  LANG=C
+  LANGUAGE=it_CH:it
+  LC_ALL=C
+  MACHTYPE=arm-unknown-linux-gnueabihf
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnueabihf
+  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=9041
   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.kVggUF6W/pbuilderrc_ajJ8 --distribution unstable --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.kVggUF6W/b1 --logfile b1/build.log phpunit_11.5.12-2.dsc'
-  SUDO_GID='113'
-  SUDO_UID='107'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://10.0.0.15:3142/'
+  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.kVggUF6W/pbuilderrc_IrRn --distribution unstable --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.kVggUF6W/b2 --logfile b2/build.log phpunit_11.5.12-2.dsc'
+  SUDO_GID=113
+  SUDO_UID=107
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://10.0.0.15:3142/
 I: uname -a
-  Linux virt32a 6.1.0-32-armmp-lpae #1 SMP Debian 6.1.129-1 (2025-03-06) armv7l GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-32-arm64 #1 SMP Debian 6.1.129-1 (2025-03-06) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/29771/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4 11:20 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/9041/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -84,7 +116,7 @@
 Depends: debhelper-compat (= 13), dh-sequence-phpcomposer, help2man, php-codecoverage (>= 10.1), php-deepcopy, php-invoker, php-mbstring, php-pcov, php-phar-io-manifest, php-soap, php-staabm-side-effects-detector, php-timer, phpab, phpunit-cli-parser, phpunit-code-unit, phpunit-comparator, phpunit-diff, phpunit-environment, phpunit-global-state (>= 6), phpunit-object-enumerator (>= 5), phpunit-type (>= 5)
 dpkg-deb: building package 'pbuilder-satisfydepends-dummy' in '/tmp/satisfydepends-aptitude/pbuilder-satisfydepends-dummy.deb'.
 Selecting previously unselected package pbuilder-satisfydepends-dummy.
-(Reading database ... 19559 files and directories currently installed.)
+(Reading database ... 19509 files and directories currently installed.)
 Preparing to unpack .../pbuilder-satisfydepends-dummy.deb ...
 Unpacking pbuilder-satisfydepends-dummy (0.invalid.0) ...
 dpkg: pbuilder-satisfydepends-dummy: dependency problems, but configuring anyway as you requested:
@@ -246,10 +278,10 @@
 Get: 97 http://deb.debian.org/debian unstable/main armhf phpunit-object-enumerator all 6.0.1-3 [6656 B]
 Get: 98 http://deb.debian.org/debian unstable/main armhf phpunit-type all 5.1.0-3 [12.3 kB]
 Get: 99 http://deb.debian.org/debian unstable/main armhf pkg-php-tools all 1.49 [32.6 kB]
-Fetched 29.7 MB in 2s (19.3 MB/s)
+Fetched 29.7 MB in 1s (40.3 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package liblocale-gettext-perl.
-(Reading database ... 
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+(Reading database ... 
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 Preparing to unpack .../00-liblocale-gettext-perl_1.07-7+b1_armhf.deb ...
 Unpacking liblocale-gettext-perl (1.07-7+b1) ...
 Selecting previously unselected package psmisc.
@@ -316,7 +348,7 @@
 Setting up psmisc (23.7-2) ...
 Setting up php-common (2:96) ...
 Selecting previously unselected package php8.4-pcov.
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+(Reading database ... 
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 Preparing to unpack .../00-php8.4-pcov_1.0.11-9_armhf.deb ...
 Unpacking php8.4-pcov (1.0.11-9) ...
 Selecting previously unselected package php-pcov.
@@ -578,8 +610,8 @@
 Setting up tzdata (2025a-2) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Mon Mar 17 20:31:24 UTC 2025.
-Universal Time is now:  Mon Mar 17 20:31:24 UTC 2025.
+Local time is now:      Mon Mar 17 20:36:37 UTC 2025.
+Universal Time is now:  Mon Mar 17 20:36:37 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -700,7 +732,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/phpunit-11.5.12/ && 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  > ../phpunit_11.5.12-2_source.changes
+I: user script /srv/workspace/pbuilder/9041/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/9041/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/phpunit-11.5.12/ && 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  > ../phpunit_11.5.12-2_source.changes
 dpkg-buildpackage: info: source package phpunit
 dpkg-buildpackage: info: source version 11.5.12-2
 dpkg-buildpackage: info: source distribution unstable
@@ -918,7 +954,7 @@
 ........................I...................S................ 4636 / 4646 ( 99%)
 ..........                                                    4646 / 4646 (100%)
 
-Time: 02:36.953, Memory: 46.00 MB
+Time: 02:31.825, Memory: 46.00 MB
 
 There were 7 skipped tests:
 
@@ -1015,12 +1051,14 @@
 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/9041/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/9041/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/29771 and its subdirectories
-I: Current time: Mon Mar 17 08:35:21 -12 2025
-I: pbuilder-time-stamp: 1742243721
+I: removing directory /srv/workspace/pbuilder/9041 and its subdirectories
+I: Current time: Tue Mar 18 10:40:36 +14 2025
+I: pbuilder-time-stamp: 1742244036