Diff of the two buildlogs:

--
--- b1/build.log	2025-01-28 11:53:53.551857153 +0000
+++ b2/build.log	2025-01-28 11:55:45.134844066 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Jan 27 23:51:24 -12 2025
-I: pbuilder-time-stamp: 1738065084
+I: Current time: Wed Jan 29 01:54:02 +14 2025
+I: pbuilder-time-stamp: 1738065242
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -22,52 +22,84 @@
 dpkg-source: info: unpacking libfile-util-perl_4.201720-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/8798/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/32673/tmp/hooks/D01_modify_environment starting
+debug: Running on virt64z.
+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 Jan 28 11:54 /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/32673/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/32673/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='trixie'
-  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=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=arm
+  HOST_ARCH=armhf
   IFS=' 	
   '
-  INVOCATION_ID='70a9cf78140d4bb999e74c3020a26222'
-  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='8798'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=59000ba6aafa40dba8c29007523edd8f
+  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=32673
   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.a8aFo3Z5/pbuilderrc_C8gj --distribution trixie --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/trixie-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.a8aFo3Z5/b1 --logfile b1/build.log libfile-util-perl_4.201720-2.dsc'
-  SUDO_GID='112'
-  SUDO_UID='106'
-  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.a8aFo3Z5/pbuilderrc_wEWK --distribution trixie --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/trixie-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.a8aFo3Z5/b2 --logfile b2/build.log libfile-util-perl_4.201720-2.dsc'
+  SUDO_GID=110
+  SUDO_UID=103
+  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 virt32b 6.1.0-30-armmp-lpae #1 SMP Debian 6.1.124-1 (2025-01-12) armv7l GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-30-arm64 #1 SMP Debian 6.1.124-1 (2025-01-12) 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/8798/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/32673/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -142,7 +174,7 @@
 Get: 31 http://deb.debian.org/debian trixie/main armhf libmodule-build-perl all 0.423400-2 [252 kB]
 Get: 32 http://deb.debian.org/debian trixie/main armhf libtest-nowarnings-perl all 1.06-2 [11.8 kB]
 Get: 33 http://deb.debian.org/debian trixie/main armhf libunicode-utf8-perl armhf 0.62-2+b3 [19.3 kB]
-Fetched 19.9 MB in 0s (53.3 MB/s)
+Fetched 19.9 MB in 17s (1185 kB/s)
 Preconfiguring packages ...
 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 ... 19568 files and directories currently installed.)
@@ -291,7 +323,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/libfile-util-perl-4.201720/ && 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  > ../libfile-util-perl_4.201720-2_source.changes
+I: user script /srv/workspace/pbuilder/32673/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/32673/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libfile-util-perl-4.201720/ && 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  > ../libfile-util-perl_4.201720-2_source.changes
 dpkg-buildpackage: info: source package libfile-util-perl
 dpkg-buildpackage: info: source version 4.201720-2
 dpkg-buildpackage: info: source distribution unstable
@@ -542,7 +578,7 @@
 ok 1 - File::Util can tell if something is readable
 ok 2 - File::Util can tell if something is writable
 ok 3 - File::Util can tell when a file was last changed
-ok 4 - make temp testbed in /tmp/NktPm_do_a/9646/1738065215
+ok 4 - make temp testbed in /tmp/9J3f46k0E8/2646/1738065321
 ok 5 - testbed created OK
 ok 6 - File::Util agrees it exists
 ok 7 - write to a new text file
@@ -661,42 +697,42 @@
 ok
 t/012_atomize_path.t ............ 
 1..37
-ok 1 - atomized root matches "D:\"
-ok 2 - atomized path matches ""
-ok 3 - atomized filename matches ""
-ok 4 - atomized root matches "/"
-ok 5 - atomized path matches ""
-ok 6 - atomized filename matches "root"
+ok 1 - atomized root matches ""
+ok 2 - atomized path matches "./a/b/c/d/e/f"
+ok 3 - atomized filename matches "g.txt"
+ok 4 - atomized root matches ""
+ok 5 - atomized path matches "../wibble"
+ok 6 - atomized filename matches "wombat.ini"
 ok 7 - atomized root matches "D:\"
 ok 8 - atomized path matches ""
 ok 9 - atomized filename matches "autorun.inf"
-ok 10 - atomized root matches ":"
-ok 11 - atomized path matches "a:b:c:d:e:f"
-ok 12 - atomized filename matches "g.txt"
-ok 13 - atomized root matches ""
-ok 14 - atomized path matches "../.."
-ok 15 - atomized filename matches "zoot.conf"
+ok 10 - atomized root matches "/"
+ok 11 - atomized path matches "etc"
+ok 12 - atomized filename matches "sudoers"
+ok 13 - atomized root matches "/"
+ok 14 - atomized path matches ""
+ok 15 - atomized filename matches "root"
 ok 16 - atomized root matches "/"
-ok 17 - atomized path matches "foo/bar"
-ok 18 - atomized filename matches "baz.txt"
-ok 19 - atomized root matches "C:\"
-ok 20 - atomized path matches "foo\bar"
+ok 17 - atomized path matches ""
+ok 18 - atomized filename matches ""
+ok 19 - atomized root matches "/"
+ok 20 - atomized path matches "foo/bar"
 ok 21 - atomized filename matches "baz.txt"
 ok 22 - atomized root matches ""
-ok 23 - atomized path matches "./a/b/c/d/e/f"
-ok 24 - atomized filename matches "g.txt"
-ok 25 - atomized root matches "/"
-ok 26 - atomized path matches "etc"
-ok 27 - atomized filename matches "sudoers"
-ok 28 - atomized root matches "/"
+ok 23 - atomized path matches "../.."
+ok 24 - atomized filename matches "zoot.conf"
+ok 25 - atomized root matches ""
+ok 26 - atomized path matches "..\woot"
+ok 27 - atomized filename matches "noot.doc"
+ok 28 - atomized root matches "D:\"
 ok 29 - atomized path matches ""
 ok 30 - atomized filename matches ""
-ok 31 - atomized root matches ""
-ok 32 - atomized path matches "..\woot"
-ok 33 - atomized filename matches "noot.doc"
-ok 34 - atomized root matches ""
-ok 35 - atomized path matches "../wibble"
-ok 36 - atomized filename matches "wombat.ini"
+ok 31 - atomized root matches ":"
+ok 32 - atomized path matches "a:b:c:d:e:f"
+ok 33 - atomized filename matches "g.txt"
+ok 34 - atomized root matches "C:\"
+ok 35 - atomized path matches "foo\bar"
+ok 36 - atomized filename matches "baz.txt"
 ok 37 - no warnings
 ok
 t/013_interface_classic.t ....... 
@@ -862,7 +898,7 @@
 ok 2 - no warnings
 ok
 All tests successful.
-Files=23, Tests=415,  9 wallclock secs ( 0.23 usr  0.15 sys +  6.99 cusr  0.91 csys =  8.28 CPU)
+Files=23, Tests=415,  6 wallclock secs ( 0.12 usr  0.06 sys +  4.36 cusr  0.56 csys =  5.10 CPU)
 Result: PASS
    create-stamp debian/debhelper-build-stamp
    dh_prep
@@ -871,24 +907,24 @@
 Building File-Util
 Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/perl5/File/Util.pm
 Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/perl5/File/Util/Manual.pod
-Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/perl5/File/Util/Exception.pm
 Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/perl5/File/Util/Definitions.pm
 Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/perl5/File/Util/Cookbook.pod
-Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/perl5/File/Util/Interface/Modern.pm
-Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/perl5/File/Util/Interface/Classic.pm
+Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/perl5/File/Util/Exception.pm
 Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/perl5/File/Util/Exception/Diagnostic.pm
 Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/perl5/File/Util/Exception/Standard.pm
+Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/perl5/File/Util/Interface/Classic.pm
+Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/perl5/File/Util/Interface/Modern.pm
 Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/perl5/File/Util/Manual/Examples.pod
-Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util::Definitions.3pm
-Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util::Interface::Modern.3pm
-Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util::Exception.3pm
 Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util::Cookbook.3pm
-Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util.3pm
-Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util::Interface::Classic.3pm
 Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util::Manual::Examples.3pm
+Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util::Exception.3pm
+Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util::Manual.3pm
 Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util::Exception::Diagnostic.3pm
 Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util::Exception::Standard.3pm
-Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util::Manual.3pm
+Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util::Definitions.3pm
+Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util::Interface::Classic.3pm
+Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util.3pm
+Installing /build/reproducible-path/libfile-util-perl-4.201720/debian/libfile-util-perl/usr/share/man/man3/File::Util::Interface::Modern.3pm
    dh_installdocs
    dh_installchangelogs
    dh_installexamples
@@ -911,12 +947,14 @@
 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/32673/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/32673/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/8798 and its subdirectories
-I: Current time: Mon Jan 27 23:53:49 -12 2025
-I: pbuilder-time-stamp: 1738065229
+I: removing directory /srv/workspace/pbuilder/32673 and its subdirectories
+I: Current time: Wed Jan 29 01:55:41 +14 2025
+I: pbuilder-time-stamp: 1738065341