Diff of the two buildlogs:

--
--- b1/build.log	2024-10-08 09:41:44.477055220 +0000
+++ b2/build.log	2024-10-08 09:42:40.158688488 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Nov 10 04:04:15 -12 2025
-I: pbuilder-time-stamp: 1762790655
+I: Current time: Tue Oct  8 23:41:47 +14 2024
+I: pbuilder-time-stamp: 1728380507
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -25,52 +25,84 @@
 dpkg-source: info: unpacking libcrypt-u2f-server-perl_0.47-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3169782/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/3422511/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink04-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 Oct  8 09:41 /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/3422511/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/3422511/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='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]="32" [3]="1" [4]="release" [5]="aarch64-unknown-linux-gnu")
+  BASH_VERSION='5.2.32(1)-release'
+  BUILDDIR=/build/reproducible-path
+  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=12 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  INVOCATION_ID='721020d83cea48a1906c22f30597c4f7'
-  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='3169782'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=7982fba99a2f4b149ba0f631cd83f7ba
+  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=3422511
   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.mw5ngGfH/pbuilderrc_sIRV --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.mw5ngGfH/b1 --logfile b1/build.log libcrypt-u2f-server-perl_0.47-1.dsc'
-  SUDO_GID='109'
-  SUDO_UID='104'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://192.168.101.4:3128'
+  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.mw5ngGfH/pbuilderrc_armj --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.mw5ngGfH/b2 --logfile b2/build.log libcrypt-u2f-server-perl_0.47-1.dsc'
+  SUDO_GID=109
+  SUDO_UID=104
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://192.168.101.4:3128
 I: uname -a
-  Linux codethink01-arm64 6.1.0-26-cloud-arm64 #1 SMP Debian 6.1.112-1 (2024-09-30) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-26-cloud-arm64 #1 SMP Debian 6.1.112-1 (2024-09-30) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Aug  4  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3169782/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Aug  4 21:30 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/3422511/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -207,7 +239,7 @@
 Get: 90 http://deb.debian.org/debian trixie/main arm64 libperl-dev arm64 5.38.2-5 [998 kB]
 Get: 91 http://deb.debian.org/debian trixie/main arm64 libu2f-server0 arm64 1.1.0-4+b2 [18.3 kB]
 Get: 92 http://deb.debian.org/debian trixie/main arm64 libu2f-server-dev arm64 1.1.0-4+b2 [20.1 kB]
-Fetched 23.1 MB in 1s (45.7 MB/s)
+Fetched 23.1 MB in 0s (95.6 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 ... 19899 files and directories currently installed.)
@@ -590,7 +622,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/libcrypt-u2f-server-perl-0.47/ && 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  > ../libcrypt-u2f-server-perl_0.47-1_source.changes
+I: user script /srv/workspace/pbuilder/3422511/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/3422511/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libcrypt-u2f-server-perl-0.47/ && 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  > ../libcrypt-u2f-server-perl_0.47-1_source.changes
 dpkg-buildpackage: info: source package libcrypt-u2f-server-perl
 dpkg-buildpackage: info: source version 0.47-1
 dpkg-buildpackage: info: source distribution unstable
@@ -615,15 +651,15 @@
 	make -j12
 make[1]: Entering directory '/build/reproducible-path/libcrypt-u2f-server-perl-0.47'
 Running Mkbootstrap for Server ()
-"/usr/bin/perl" "/usr/share/perl/5.38/ExtUtils/xsubpp"  -typemap '/usr/share/perl/5.38/ExtUtils/typemap' -typemap '/build/reproducible-path/libcrypt-u2f-server-perl-0.47/typemap'  U2F.xs > U2F.xsc
-aarch64-linux-gnu-gcc -c  -I. -D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fwrapv -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/libcrypt-u2f-server-perl-0.47=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2   -DVERSION=\"0.47\" -DXS_VERSION=\"0.47\" -fPIC "-I/usr/lib/aarch64-linux-gnu/perl/5.38/CORE"   u2f.c
-chmod 644 "Server.bs"
-"/usr/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- Server.bs blib/arch/auto/Crypt/U2F/Server/Server.bs 644
-cp lib/Crypt/U2F/Server/Simple.pm blib/lib/Crypt/U2F/Server/Simple.pm
 cp lib/Crypt/U2F/Server.pm blib/lib/Crypt/U2F/Server.pm
 AutoSplitting blib/lib/Crypt/U2F/Server.pm (blib/lib/auto/Crypt/U2F/Server)
+cp lib/Crypt/U2F/Server/Simple.pm blib/lib/Crypt/U2F/Server/Simple.pm
+"/usr/bin/perl" "/usr/share/perl/5.38/ExtUtils/xsubpp"  -typemap '/usr/share/perl/5.38/ExtUtils/typemap' -typemap '/build/reproducible-path/libcrypt-u2f-server-perl-0.47/typemap'  U2F.xs > U2F.xsc
+chmod 644 "Server.bs"
+aarch64-linux-gnu-gcc -c  -I. -D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fwrapv -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/libcrypt-u2f-server-perl-0.47=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2   -DVERSION=\"0.47\" -DXS_VERSION=\"0.47\" -fPIC "-I/usr/lib/aarch64-linux-gnu/perl/5.38/CORE"   u2f.c
 Please specify prototyping behavior for U2F.xs (see perlxs manual)
 mv U2F.xsc U2F.c
+"/usr/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- Server.bs blib/arch/auto/Crypt/U2F/Server/Server.bs 644
 aarch64-linux-gnu-gcc -c  -I. -D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fwrapv -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/libcrypt-u2f-server-perl-0.47=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2   -DVERSION=\"0.47\" -DXS_VERSION=\"0.47\" -fPIC "-I/usr/lib/aarch64-linux-gnu/perl/5.38/CORE"   U2F.c
 In file included from U2F.xs:6:
 ppport.h:4385:10: warning: "WIDEST_UTYPE" redefined
@@ -698,7 +734,7 @@
 ok 18 - Error detected
 ok
 All tests successful.
-Files=3, Tests=42,  1 wallclock secs ( 0.03 usr  0.02 sys +  0.70 cusr  0.08 csys =  0.83 CPU)
+Files=3, Tests=42,  1 wallclock secs ( 0.02 usr  0.00 sys +  0.57 cusr  0.08 csys =  0.67 CPU)
 Result: PASS
 make[1]: Leaving directory '/build/reproducible-path/libcrypt-u2f-server-perl-0.47'
    create-stamp debian/debhelper-build-stamp
@@ -710,9 +746,9 @@
 Manifying 2 pod documents
 Files found in blib/arch: installing files in blib/lib into architecture dependent library tree
 Installing /build/reproducible-path/libcrypt-u2f-server-perl-0.47/debian/libcrypt-u2f-server-perl/usr/lib/aarch64-linux-gnu/perl5/5.38/auto/Crypt/U2F/Server/Server.so
+Installing /build/reproducible-path/libcrypt-u2f-server-perl-0.47/debian/libcrypt-u2f-server-perl/usr/lib/aarch64-linux-gnu/perl5/5.38/auto/Crypt/U2F/Server/autosplit.ix
 Installing /build/reproducible-path/libcrypt-u2f-server-perl-0.47/debian/libcrypt-u2f-server-perl/usr/lib/aarch64-linux-gnu/perl5/5.38/Crypt/U2F/Server.pm
 Installing /build/reproducible-path/libcrypt-u2f-server-perl-0.47/debian/libcrypt-u2f-server-perl/usr/lib/aarch64-linux-gnu/perl5/5.38/Crypt/U2F/Server/Simple.pm
-Installing /build/reproducible-path/libcrypt-u2f-server-perl-0.47/debian/libcrypt-u2f-server-perl/usr/lib/aarch64-linux-gnu/perl5/5.38/auto/Crypt/U2F/Server/autosplit.ix
 Installing /build/reproducible-path/libcrypt-u2f-server-perl-0.47/debian/libcrypt-u2f-server-perl/usr/share/man/man3/Crypt::U2F::Server::Simple.3pm
 Installing /build/reproducible-path/libcrypt-u2f-server-perl-0.47/debian/libcrypt-u2f-server-perl/usr/share/man/man3/Crypt::U2F::Server.3pm
 make[1]: Leaving directory '/build/reproducible-path/libcrypt-u2f-server-perl-0.47'
@@ -742,8 +778,8 @@
    dh_gencontrol
    dh_md5sums
    dh_builddeb
-dpkg-deb: building package 'libcrypt-u2f-server-perl' in '../libcrypt-u2f-server-perl_0.47-1_arm64.deb'.
 dpkg-deb: building package 'libcrypt-u2f-server-perl-dbgsym' in '../libcrypt-u2f-server-perl-dbgsym_0.47-1_arm64.deb'.
+dpkg-deb: building package 'libcrypt-u2f-server-perl' in '../libcrypt-u2f-server-perl_0.47-1_arm64.deb'.
  dpkg-genbuildinfo --build=binary -O../libcrypt-u2f-server-perl_0.47-1_arm64.buildinfo
  dpkg-genchanges --build=binary -O../libcrypt-u2f-server-perl_0.47-1_arm64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -751,12 +787,14 @@
 dpkg-buildpackage: info: binary-only upload (no source included)
 dpkg-genchanges: info: including full source code in upload
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/3422511/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/3422511/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/3169782 and its subdirectories
-I: Current time: Mon Nov 10 04:04:42 -12 2025
-I: pbuilder-time-stamp: 1762790682
+I: removing directory /srv/workspace/pbuilder/3422511 and its subdirectories
+I: Current time: Tue Oct  8 23:42:39 +14 2024
+I: pbuilder-time-stamp: 1728380559