Diff of the two buildlogs:

--
--- b1/build.log	2025-03-17 02:02:53.839691392 +0000
+++ b2/build.log	2025-03-17 02:04:36.043103176 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Mar 16 14:00:32 -12 2025
-I: pbuilder-time-stamp: 1742176832
+I: Current time: Mon Mar 17 16:03:04 +14 2025
+I: pbuilder-time-stamp: 1742176984
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/experimental-reproducible-base.tgz]
 I: copying local configuration
@@ -25,52 +25,84 @@
 dpkg-source: info: applying Debian_uncomment_hostname_in_dhcpcd_conf.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/24626/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/484/tmp/hooks/D01_modify_environment starting
+debug: Running on virt64b.
+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 02:03 /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/484/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/484/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='experimental'
-  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=experimental
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=arm
+  HOST_ARCH=armhf
   IFS=' 	
   '
-  INVOCATION_ID='53dc65149d87449496b841532c6088b0'
-  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='24626'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=342842d0cb444cc1a4e409b77f6a7740
+  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=484
   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.WlLLs4cm/pbuilderrc_9W3H --distribution experimental --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/experimental-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.WlLLs4cm/b1 --logfile b1/build.log dhcpcd_10.2.2-2.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.WlLLs4cm/pbuilderrc_BZi5 --distribution experimental --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/experimental-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.WlLLs4cm/b2 --logfile b2/build.log dhcpcd_10.2.2-2.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 ff4a 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 Mar  4 11:20 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/24626/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/484/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -154,7 +186,7 @@
 Get: 38 http://deb.debian.org/debian unstable/main armhf libudev-dev armhf 257.4-3 [72.5 kB]
 Get: 39 http://deb.debian.org/debian unstable/main armhf pkgconf-bin armhf 1.8.1-4 [29.2 kB]
 Get: 40 http://deb.debian.org/debian unstable/main armhf pkgconf armhf 1.8.1-4 [26.1 kB]
-Fetched 28.2 MB in 1s (19.2 MB/s)
+Fetched 28.2 MB in 0s (60.6 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libsystemd-shared:armhf.
 (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 ... 19509 files and directories currently installed.)
@@ -343,7 +375,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/dhcpcd-10.2.2/ && 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  > ../dhcpcd_10.2.2-2_source.changes
+I: user script /srv/workspace/pbuilder/484/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for experimental
+I: user script /srv/workspace/pbuilder/484/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/dhcpcd-10.2.2/ && 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  > ../dhcpcd_10.2.2-2_source.changes
 dpkg-buildpackage: info: source package dhcpcd
 dpkg-buildpackage: info: source version 1:10.2.2-2
 dpkg-buildpackage: info: source distribution experimental
@@ -353,7 +389,7 @@
  debian/rules clean
 dh clean
    dh_auto_clean
-	make -j3 distclean
+	make -j4 distclean
 make[1]: Entering directory '/build/reproducible-path/dhcpcd-10.2.2'
 rm -rf cov-int dhcpcd.xz
 for x in src hooks tests; do cd $x; make clean || exit $?; cd ..; done
@@ -500,7 +536,7 @@
 
 make[1]: Leaving directory '/build/reproducible-path/dhcpcd-10.2.2'
    dh_auto_build
-	make -j3
+	make -j4
 make[1]: Entering directory '/build/reproducible-path/dhcpcd-10.2.2'
 for x in src hooks; do cd $x; make all || exit $?; cd ..; done
 make[2]: Entering directory '/build/reproducible-path/dhcpcd-10.2.2/src'
@@ -593,7 +629,7 @@
 make[2]: Leaving directory '/build/reproducible-path/dhcpcd-10.2.2/hooks'
 make[1]: Leaving directory '/build/reproducible-path/dhcpcd-10.2.2'
    dh_auto_test
-	make -j3 test "TESTSUITEFLAGS=-j3 --verbose" VERBOSE=1
+	make -j4 test "TESTSUITEFLAGS=-j4 --verbose" VERBOSE=1
 make[1]: Entering directory '/build/reproducible-path/dhcpcd-10.2.2'
 cd tests; make tests
 make[2]: Entering directory '/build/reproducible-path/dhcpcd-10.2.2/tests'
@@ -629,32 +665,32 @@
 cc -Wl,-z,relro -Wl,-z,now -Wl,-export-dynamic -o eloop-bench eloop-bench.o ../../src/eloop.o ../../compat/pidfile.o ../../compat/setproctitle.o ../../compat/strtoi.o ../../compat/strtou.o ../../compat/rb.o -lcrypto 
 ./eloop-bench
 active = 1, pipes = 100, runs = 25, writes = 100
-run 1 took 0.004284496 seconds, result 0
-run 2 took 0.000000583 seconds, result 0
-run 3 took 0.000000291 seconds, result 0
-run 4 took 0.000000291 seconds, result 0
-run 5 took 0.000000292 seconds, result 0
-run 6 took 0.000000583 seconds, result 0
-run 7 took 0.000000583 seconds, result 0
-run 8 took 0.000000292 seconds, result 0
-run 9 took 0.000000292 seconds, result 0
-run 10 took 0.000000292 seconds, result 0
-run 11 took 0.000000291 seconds, result 0
-run 12 took 0.000000292 seconds, result 0
-run 13 took 0.000000292 seconds, result 0
-run 14 took 0.000000291 seconds, result 0
-run 15 took 0.000000291 seconds, result 0
-run 16 took 0.000000292 seconds, result 0
-run 17 took 0.000000292 seconds, result 0
-run 18 took 0.000000291 seconds, result 0
-run 19 took 0.000000292 seconds, result 0
-run 20 took 0.000000583 seconds, result 0
-run 21 took 0.000000584 seconds, result 0
-run 22 took 0.000000583 seconds, result 0
-run 23 took 0.000000291 seconds, result 0
-run 24 took 0.000000292 seconds, result 0
-run 25 took 0.000000292 seconds, result 0
-total 0.005483805 seconds, result 0
+run 1 took 0.002968641 seconds, result 0
+run 2 took 0.000000180 seconds, result 0
+run 3 took 0.000000120 seconds, result 0
+run 4 took 0.000000120 seconds, result 0
+run 5 took 0.000000100 seconds, result 0
+run 6 took 0.000000080 seconds, result 0
+run 7 took 0.000000100 seconds, result 0
+run 8 took 0.000000080 seconds, result 0
+run 9 took 0.000000100 seconds, result 0
+run 10 took 0.000000080 seconds, result 0
+run 11 took 0.000000080 seconds, result 0
+run 12 took 0.000000100 seconds, result 0
+run 13 took 0.000000100 seconds, result 0
+run 14 took 0.000000100 seconds, result 0
+run 15 took 0.000000080 seconds, result 0
+run 16 took 0.000000100 seconds, result 0
+run 17 took 0.000000100 seconds, result 0
+run 18 took 0.000000100 seconds, result 0
+run 19 took 0.000000100 seconds, result 0
+run 20 took 0.000000100 seconds, result 0
+run 21 took 0.000000100 seconds, result 0
+run 22 took 0.000000100 seconds, result 0
+run 23 took 0.000000080 seconds, result 0
+run 24 took 0.000000100 seconds, result 0
+run 25 took 0.000000080 seconds, result 0
+total 0.003946749 seconds, result 0
 make[3]: Leaving directory '/build/reproducible-path/dhcpcd-10.2.2/tests/eloop-bench'
 make[2]: Leaving directory '/build/reproducible-path/dhcpcd-10.2.2/tests'
 make[1]: Leaving directory '/build/reproducible-path/dhcpcd-10.2.2'
@@ -662,16 +698,17 @@
    dh_prep
    dh_installdirs
    dh_auto_install
-	make -j3 install DESTDIR=/build/reproducible-path/dhcpcd-10.2.2/debian/tmp AM_UPDATE_INFO_DIR=no
+	make -j4 install DESTDIR=/build/reproducible-path/dhcpcd-10.2.2/debian/tmp AM_UPDATE_INFO_DIR=no
 make[1]: Entering directory '/build/reproducible-path/dhcpcd-10.2.2'
 for x in src hooks; do cd $x; make install || exit $?; cd ..; done
 make[2]: Entering directory '/build/reproducible-path/dhcpcd-10.2.2/src'
 install -d /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/sbin
 install -d /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/share/man/man5
 install -d /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/etc
-# Install a new default config if not present
 install -m 0555 dhcpcd /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/sbin
 install -m 0444 dhcpcd.conf.5 /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/share/man/man5
+# Install a new default config if not present
+install -d /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/share/man/man8
 if ! [ -e /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/etc/dhcpcd.conf ]; then \
 	install -m 0644 dhcpcd.conf /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/etc; \
 	if [ "" = yes ]; then \
@@ -680,9 +717,8 @@
 		    /build/reproducible-path/dhcpcd-10.2.2/debian/tmp//etc/dhcpcd.conf; \
 	fi; \
 fi
-install -d /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/share/man/man8
-install -m 0444 dhcpcd.8 /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/share/man/man8
 install -m 0750 -d /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/var/lib/dhcpcd
+install -m 0444 dhcpcd.8 /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/share/man/man8
 for x in dev; do cd $x; make proginstall || exit $?; cd ..; done
 make[3]: Entering directory '/build/reproducible-path/dhcpcd-10.2.2/src/dev'
 install -d /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/lib/arm-linux-gnueabihf/dhcpcd/dev
@@ -691,12 +727,12 @@
 make[2]: Leaving directory '/build/reproducible-path/dhcpcd-10.2.2/src'
 make[2]: Entering directory '/build/reproducible-path/dhcpcd-10.2.2/hooks'
 install -d /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/lib/dhcpcd
-install -m 0555 dhcpcd-run-hooks /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/lib/dhcpcd
 install -d /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/share/dhcpcd/hooks
+install -m 0555 dhcpcd-run-hooks /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/lib/dhcpcd
 install -d /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/share/man/man8
-install -d /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/lib/dhcpcd/dhcpcd-hooks
 install -m 0444 10-wpa_supplicant 15-timezone 29-lookup-hostname  /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/share/dhcpcd/hooks
 install -m 0444 dhcpcd-run-hooks.8 /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/share/man/man8
+install -d /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/lib/dhcpcd/dhcpcd-hooks
 install -m 0444 01-test 20-resolv.conf 30-hostname 50-timesyncd.conf /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/lib/dhcpcd/dhcpcd-hooks
 # We need to remove the old MTU change script if we at all can.
 rm -f /build/reproducible-path/dhcpcd-10.2.2/debian/tmp/usr/lib/dhcpcd/dhcpcd-hooks/10-mtu
@@ -735,14 +771,14 @@
 dpkg-shlibdeps: warning: 3 other similar warnings have been skipped (use -v to see them all)
    dh_installdeb
    dh_gencontrol
-dpkg-gencontrol: warning: Depends field of package dhcpcd: substitution variable ${shlibs:Depends} used, but is not defined
 dpkg-gencontrol: warning: Depends field of package dhcpcd5: substitution variable ${shlibs:Depends} used, but is not defined
+dpkg-gencontrol: warning: Depends field of package dhcpcd: substitution variable ${shlibs:Depends} used, but is not defined
    dh_md5sums
    dh_builddeb
-dpkg-deb: building package 'dhcpcd' in '../dhcpcd_10.2.2-2_all.deb'.
+dpkg-deb: building package 'dhcpcd-base-dbgsym' in '../dhcpcd-base-dbgsym_10.2.2-2_armhf.deb'.
 dpkg-deb: building package 'dhcpcd-base' in '../dhcpcd-base_10.2.2-2_armhf.deb'.
+dpkg-deb: building package 'dhcpcd' in '../dhcpcd_10.2.2-2_all.deb'.
 dpkg-deb: building package 'dhcpcd5' in '../dhcpcd5_10.2.2-2_all.deb'.
-dpkg-deb: building package 'dhcpcd-base-dbgsym' in '../dhcpcd-base-dbgsym_10.2.2-2_armhf.deb'.
  dpkg-genbuildinfo --build=binary -O../dhcpcd_10.2.2-2_armhf.buildinfo
  dpkg-genchanges --build=binary -O../dhcpcd_10.2.2-2_armhf.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -750,12 +786,14 @@
 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/484/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/484/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/24626 and its subdirectories
-I: Current time: Sun Mar 16 14:02:49 -12 2025
-I: pbuilder-time-stamp: 1742176969
+I: removing directory /srv/workspace/pbuilder/484 and its subdirectories
+I: Current time: Mon Mar 17 16:04:31 +14 2025
+I: pbuilder-time-stamp: 1742177071