Diff of the two buildlogs:

--
--- b1/build.log	2024-05-30 14:47:17.034565190 +0000
+++ b2/build.log	2024-05-30 14:53:06.231729580 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu May 30 02:45:56 -12 2024
-I: pbuilder-time-stamp: 1717080356
+I: Current time: Fri May 31 04:47:28 +14 2024
+I: pbuilder-time-stamp: 1717080448
 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 libatteanx-store-sparql-perl_0.012-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/14183/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/2679/tmp/hooks/D01_modify_environment starting
+debug: Running on ff4a.
+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 May 30 14:48 /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/2679/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/2679/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]="21" [3]="1" [4]="release" [5]="arm-unknown-linux-gnueabihf")
+  BASH_VERSION='5.2.21(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='24e6e532cb1044be8ae1d5d035d096cf'
-  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='14183'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=9130256379704aa4a4d8d2791c81c46f
+  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=2679
   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.j8JJ6y9q/pbuilderrc_izO8 --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.j8JJ6y9q/b1 --logfile b1/build.log libatteanx-store-sparql-perl_0.012-2.dsc'
-  SUDO_GID='110'
-  SUDO_UID='103'
-  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.j8JJ6y9q/pbuilderrc_yngQ --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.j8JJ6y9q/b2 --logfile b2/build.log libatteanx-store-sparql-perl_0.012-2.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 virt64z 6.1.0-21-arm64 #1 SMP Debian 6.1.90-1 (2024-05-03) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-21-armmp-lpae #1 SMP Debian 6.1.90-1 (2024-05-03) armv7l GNU/Linux
 I: ls -l /bin
   lrwxrwxrwx 1 root root 7 May 26 11:25 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/14183/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/2679/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -322,7 +354,7 @@
 Get: 190 http://deb.debian.org/debian trixie/main armhf libtest-warnings-perl all 0.033-1 [21.1 kB]
 Get: 191 http://deb.debian.org/debian trixie/main armhf libtest-modern-perl all 0.013-4 [36.6 kB]
 Get: 192 http://deb.debian.org/debian trixie/main armhf libtest-roo-perl all 1.004-2 [31.1 kB]
-Fetched 33.7 MB in 1s (45.0 MB/s)
+Fetched 33.7 MB in 5s (7408 kB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package sgml-base.
 (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
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(Reading database ... 25%
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(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 ... 19444 files and directories currently installed.)
@@ -950,8 +982,8 @@
 Setting up tzdata (2024a-4) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Thu May 30 14:46:45 UTC 2024.
-Universal Time is now:  Thu May 30 14:46:45 UTC 2024.
+Local time is now:      Thu May 30 14:50:28 UTC 2024.
+Universal Time is now:  Thu May 30 14:50:28 UTC 2024.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up liberror-perl (0.17029-2) ...
@@ -1127,7 +1159,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/libatteanx-store-sparql-perl-0.012/ && 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  > ../libatteanx-store-sparql-perl_0.012-2_source.changes
+I: user script /srv/workspace/pbuilder/2679/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/2679/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libatteanx-store-sparql-perl-0.012/ && 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  > ../libatteanx-store-sparql-perl_0.012-2_source.changes
 dpkg-buildpackage: info: source package libatteanx-store-sparql-perl
 dpkg-buildpackage: info: source version 0.012-2
 dpkg-buildpackage: info: source distribution unstable
@@ -1149,17 +1185,17 @@
 Writing Makefile for AtteanX::Store::SPARQL
 Writing MYMETA.yml and MYMETA.json
    dh_auto_build
-	make -j3
+	make -j4
 make[1]: Entering directory '/build/reproducible-path/libatteanx-store-sparql-perl-0.012'
 cp lib/AtteanX/Model/SPARQL.pm blib/lib/AtteanX/Model/SPARQL.pm
+cp lib/AtteanX/Plan/SPARQLBGP.pm blib/lib/AtteanX/Plan/SPARQLBGP.pm
 cp lib/Test/Attean/Store/SPARQL/Role/CreateStore.pm blib/lib/Test/Attean/Store/SPARQL/Role/CreateStore.pm
-cp lib/AtteanX/Store/SPARQL.pm blib/lib/AtteanX/Store/SPARQL.pm
 cp lib/AtteanX/Query/AccessPlan/SingleQuadBGP.pm blib/lib/AtteanX/Query/AccessPlan/SingleQuadBGP.pm
-cp lib/AtteanX/Plan/SPARQLBGP.pm blib/lib/AtteanX/Plan/SPARQLBGP.pm
+cp lib/AtteanX/Store/SPARQL.pm blib/lib/AtteanX/Store/SPARQL.pm
 Manifying 5 pod documents
 make[1]: Leaving directory '/build/reproducible-path/libatteanx-store-sparql-perl-0.012'
    dh_auto_test
-	make -j3 test TEST_VERBOSE=1
+	make -j4 test TEST_VERBOSE=1
 make[1]: Entering directory '/build/reproducible-path/libatteanx-store-sparql-perl-0.012'
 PERL_DL_NONLAZY=1 "/usr/bin/perl" "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harness::Switches; test_harness(1, 'blib/lib', 'blib/arch')" t/*.t
 t/plan.t ......... 
@@ -1227,25 +1263,25 @@
 1..1
 ok
 All tests successful.
-Files=2, Tests=11,  6 wallclock secs ( 0.04 usr  0.02 sys +  5.78 cusr  0.36 csys =  6.20 CPU)
+Files=2, Tests=11, 36 wallclock secs ( 0.13 usr  0.01 sys + 15.86 cusr  0.73 csys = 16.73 CPU)
 Result: PASS
 make[1]: Leaving directory '/build/reproducible-path/libatteanx-store-sparql-perl-0.012'
    create-stamp debian/debhelper-build-stamp
    dh_prep
    dh_auto_install --destdir=debian/libatteanx-store-sparql-perl/
-	make -j3 install DESTDIR=/build/reproducible-path/libatteanx-store-sparql-perl-0.012/debian/libatteanx-store-sparql-perl AM_UPDATE_INFO_DIR=no PREFIX=/usr
+	make -j4 install DESTDIR=/build/reproducible-path/libatteanx-store-sparql-perl-0.012/debian/libatteanx-store-sparql-perl AM_UPDATE_INFO_DIR=no PREFIX=/usr
 make[1]: Entering directory '/build/reproducible-path/libatteanx-store-sparql-perl-0.012'
 Manifying 5 pod documents
+Installing /build/reproducible-path/libatteanx-store-sparql-perl-0.012/debian/libatteanx-store-sparql-perl/usr/share/perl5/Test/Attean/Store/SPARQL/Role/CreateStore.pm
 Installing /build/reproducible-path/libatteanx-store-sparql-perl-0.012/debian/libatteanx-store-sparql-perl/usr/share/perl5/AtteanX/Plan/SPARQLBGP.pm
 Installing /build/reproducible-path/libatteanx-store-sparql-perl-0.012/debian/libatteanx-store-sparql-perl/usr/share/perl5/AtteanX/Model/SPARQL.pm
 Installing /build/reproducible-path/libatteanx-store-sparql-perl-0.012/debian/libatteanx-store-sparql-perl/usr/share/perl5/AtteanX/Store/SPARQL.pm
 Installing /build/reproducible-path/libatteanx-store-sparql-perl-0.012/debian/libatteanx-store-sparql-perl/usr/share/perl5/AtteanX/Query/AccessPlan/SingleQuadBGP.pm
-Installing /build/reproducible-path/libatteanx-store-sparql-perl-0.012/debian/libatteanx-store-sparql-perl/usr/share/perl5/Test/Attean/Store/SPARQL/Role/CreateStore.pm
+Installing /build/reproducible-path/libatteanx-store-sparql-perl-0.012/debian/libatteanx-store-sparql-perl/usr/share/man/man3/AtteanX::Store::SPARQL.3pm
 Installing /build/reproducible-path/libatteanx-store-sparql-perl-0.012/debian/libatteanx-store-sparql-perl/usr/share/man/man3/AtteanX::Model::SPARQL.3pm
+Installing /build/reproducible-path/libatteanx-store-sparql-perl-0.012/debian/libatteanx-store-sparql-perl/usr/share/man/man3/AtteanX::Query::AccessPlan::SingleQuadBGP.3pm
 Installing /build/reproducible-path/libatteanx-store-sparql-perl-0.012/debian/libatteanx-store-sparql-perl/usr/share/man/man3/Test::Attean::Store::SPARQL::Role::CreateStore.3pm
-Installing /build/reproducible-path/libatteanx-store-sparql-perl-0.012/debian/libatteanx-store-sparql-perl/usr/share/man/man3/AtteanX::Store::SPARQL.3pm
 Installing /build/reproducible-path/libatteanx-store-sparql-perl-0.012/debian/libatteanx-store-sparql-perl/usr/share/man/man3/AtteanX::Plan::SPARQLBGP.3pm
-Installing /build/reproducible-path/libatteanx-store-sparql-perl-0.012/debian/libatteanx-store-sparql-perl/usr/share/man/man3/AtteanX::Query::AccessPlan::SingleQuadBGP.3pm
 make[1]: Leaving directory '/build/reproducible-path/libatteanx-store-sparql-perl-0.012'
    dh_installdocs
    dh_installchangelogs
@@ -1273,12 +1309,14 @@
 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/2679/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/2679/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/14183 and its subdirectories
-I: Current time: Thu May 30 02:47:13 -12 2024
-I: pbuilder-time-stamp: 1717080433
+I: removing directory /srv/workspace/pbuilder/2679 and its subdirectories
+I: Current time: Fri May 31 04:53:01 +14 2024
+I: pbuilder-time-stamp: 1717080781