Diff of the two buildlogs:

--
--- b1/build.log	2024-11-29 10:30:55.068738908 +0000
+++ b2/build.log	2024-11-29 10:36:24.061920153 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu Nov 28 22:28:33 -12 2024
-I: pbuilder-time-stamp: 1732876113
+I: Current time: Sat Nov 30 00:31:05 +14 2024
+I: pbuilder-time-stamp: 1732876265
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -24,52 +24,84 @@
 dpkg-source: info: unpacking debian-science_1.14.7.tar.xz
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/26190/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/29363/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 Nov 29 10:31 /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/29363/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/29363/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]="32" [3]="1" [4]="release" [5]="arm-unknown-linux-gnueabihf")
+  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=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='0916aa2a57f541f8b6cd23424bc7121b'
-  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='26190'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=cd8c095c72204b9a85e368e221d3be97
+  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=29363
   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.rOYAWMD1/pbuilderrc_s5Zn --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.rOYAWMD1/b1 --logfile b1/build.log debian-science_1.14.7.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.rOYAWMD1/pbuilderrc_cUQJ --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.rOYAWMD1/b2 --logfile b2/build.log debian-science_1.14.7.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 virt32z 6.1.0-28-armmp-lpae #1 SMP Debian 6.1.119-1 (2024-11-22) armv7l GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-28-arm64 #1 SMP Debian 6.1.119-1 (2024-11-22) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Aug  4 21:30 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/26190/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/29363/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -176,7 +208,7 @@
 Get: 67 http://deb.debian.org/debian trixie/main armhf libjs-sphinxdoc all 7.4.7-4 [158 kB]
 Get: 68 http://deb.debian.org/debian trixie/main armhf python3-blends all 0.7.7 [32.4 kB]
 Get: 69 http://deb.debian.org/debian trixie/main armhf blends-dev all 0.7.7 [22.8 kB]
-Fetched 27.1 MB in 0s (67.2 MB/s)
+Fetched 27.1 MB in 1s (19.2 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libpython3.12-minimal: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 ... 19685 files and directories currently installed.)
@@ -418,8 +450,8 @@
 Setting up tzdata (2024b-3) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Fri Nov 29 10:29:16 UTC 2024.
-Universal Time is now:  Fri Nov 29 10:29:16 UTC 2024.
+Local time is now:      Fri Nov 29 10:32:30 UTC 2024.
+Universal Time is now:  Fri Nov 29 10:32:30 UTC 2024.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -486,7 +518,11 @@
 fakeroot is already the newest version (1.36-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/debian-science-1.14.7/ && 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  > ../debian-science_1.14.7_source.changes
+I: user script /srv/workspace/pbuilder/29363/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/29363/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/debian-science-1.14.7/ && 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  > ../debian-science_1.14.7_source.changes
 dpkg-buildpackage: info: source package debian-science
 dpkg-buildpackage: info: source version 1.14.7
 dpkg-buildpackage: info: source distribution unstable
@@ -494,11 +530,9 @@
  dpkg-source --before-build .
 dpkg-buildpackage: info: host architecture armhf
  fakeroot debian/rules clean
-libfakeroot internal error: payload not recognized!
 dh clean
    debian/rules override_dh_auto_clean
 make[1]: Entering directory '/build/reproducible-path/debian-science-1.14.7'
-libfakeroot internal error: payload not recognized!
 # call make clean instead of distclean
 make clean
 make[2]: Entering directory '/build/reproducible-path/debian-science-1.14.7'
@@ -511,7 +545,6 @@
 make[1]: Leaving directory '/build/reproducible-path/debian-science-1.14.7'
    debian/rules override_dh_clean
 make[1]: Entering directory '/build/reproducible-path/debian-science-1.14.7'
-libfakeroot internal error: payload not recognized!
 # hmmm, that would kill debian/control - so don't do this!
 # /usr/bin/make -f /usr/share/blends-dev/Makefile clean
 # Clear apt-get cache
@@ -572,51 +605,51 @@
    dh_gencontrol
    dh_md5sums
    dh_builddeb
+dpkg-deb: building package 'science-psychophysics' in '../science-psychophysics_1.14.7_all.deb'.
 dpkg-deb: building package 'science-tasks' in '../science-tasks_1.14.7_all.deb'.
-dpkg-deb: building package 'science-neuroscience-cognitive' in '../science-neuroscience-cognitive_1.14.7_all.deb'.
-dpkg-deb: building package 'science-geography' in '../science-geography_1.14.7_all.deb'.
-dpkg-deb: building package 'science-neuroscience-modeling' in '../science-neuroscience-modeling_1.14.7_all.deb'.
+dpkg-deb: building package 'science-engineering' in '../science-engineering_1.14.7_all.deb'.
+dpkg-deb: building package 'science-mathematics' in '../science-mathematics_1.14.7_all.deb'.
+dpkg-deb: building package 'science-engineering-dev' in '../science-engineering-dev_1.14.7_all.deb'.
+dpkg-deb: building package 'science-mathematics-dev' in '../science-mathematics-dev_1.14.7_all.deb'.
+dpkg-deb: building package 'science-robotics' in '../science-robotics_1.14.7_all.deb'.
 dpkg-deb: building package 'science-electronics' in '../science-electronics_1.14.7_all.deb'.
-dpkg-deb: building package 'science-geometry' in '../science-geometry_1.14.7_all.deb'.
-dpkg-deb: building package 'science-numericalcomputation' in '../science-numericalcomputation_1.14.7_all.deb'.
-dpkg-deb: building package 'science-highenergy-physics' in '../science-highenergy-physics_1.14.7_all.deb'.
+dpkg-deb: building package 'science-financial' in '../science-financial_1.14.7_all.deb'.
 dpkg-deb: building package 'science-config' in '../science-config_1.14.7_all.deb'.
-dpkg-deb: building package 'science-physics' in '../science-physics_1.14.7_all.deb'.
-dpkg-deb: building package 'science-highenergy-physics-dev' in '../science-highenergy-physics-dev_1.14.7_all.deb'.
+dpkg-deb: building package 'science-robotics-dev' in '../science-robotics-dev_1.14.7_all.deb'.
+dpkg-deb: building package 'science-meteorology' in '../science-meteorology_1.14.7_all.deb'.
+dpkg-deb: building package 'science-geography' in '../science-geography_1.14.7_all.deb'.
 dpkg-deb: building package 'science-all' in '../science-all_1.14.7_all.deb'.
-dpkg-deb: building package 'science-imageanalysis' in '../science-imageanalysis_1.14.7_all.deb'.
-dpkg-deb: building package 'science-physics-dev' in '../science-physics-dev_1.14.7_all.deb'.
 dpkg-deb: building package 'science-biology' in '../science-biology_1.14.7_all.deb'.
-dpkg-deb: building package 'science-imageanalysis-dev' in '../science-imageanalysis-dev_1.14.7_all.deb'.
-dpkg-deb: building package 'science-presentation' in '../science-presentation_1.14.7_all.deb'.
+dpkg-deb: building package 'science-simulations' in '../science-simulations_1.14.7_all.deb'.
+dpkg-deb: building package 'science-meteorology-dev' in '../science-meteorology-dev_1.14.7_all.deb'.
+dpkg-deb: building package 'science-geometry' in '../science-geometry_1.14.7_all.deb'.
 dpkg-deb: building package 'science-chemistry' in '../science-chemistry_1.14.7_all.deb'.
-dpkg-deb: building package 'science-linguistics' in '../science-linguistics_1.14.7_all.deb'.
-dpkg-deb: building package 'science-psychophysics' in '../science-psychophysics_1.14.7_all.deb'.
+dpkg-deb: building package 'science-statistics' in '../science-statistics_1.14.7_all.deb'.
+dpkg-deb: building package 'science-nanoscale-physics' in '../science-nanoscale-physics_1.14.7_all.deb'.
 dpkg-deb: building package 'science-dataacquisition' in '../science-dataacquisition_1.14.7_all.deb'.
+dpkg-deb: building package 'science-highenergy-physics' in '../science-highenergy-physics_1.14.7_all.deb'.
+dpkg-deb: building package 'science-typesetting' in '../science-typesetting_1.14.7_all.deb'.
+dpkg-deb: building package 'science-nanoscale-physics-dev' in '../science-nanoscale-physics-dev_1.14.7_all.deb'.
 dpkg-deb: building package 'science-dataacquisition-dev' in '../science-dataacquisition-dev_1.14.7_all.deb'.
-dpkg-deb: building package 'science-logic' in '../science-logic_1.14.7_all.deb'.
-dpkg-deb: building package 'science-robotics' in '../science-robotics_1.14.7_all.deb'.
+dpkg-deb: building package 'science-highenergy-physics-dev' in '../science-highenergy-physics-dev_1.14.7_all.deb'.
+dpkg-deb: building package 'science-viewing' in '../science-viewing_1.14.7_all.deb'.
+dpkg-deb: building package 'science-neuroscience-cognitive' in '../science-neuroscience-cognitive_1.14.7_all.deb'.
+dpkg-deb: building package 'science-viewing-dev' in '../science-viewing-dev_1.14.7_all.deb'.
+dpkg-deb: building package 'science-imageanalysis' in '../science-imageanalysis_1.14.7_all.deb'.
+dpkg-deb: building package 'science-neuroscience-modeling' in '../science-neuroscience-modeling_1.14.7_all.deb'.
 dpkg-deb: building package 'science-datamanagement' in '../science-datamanagement_1.14.7_all.deb'.
-dpkg-deb: building package 'science-robotics-dev' in '../science-robotics-dev_1.14.7_all.deb'.
-dpkg-deb: building package 'science-machine-learning' in '../science-machine-learning_1.14.7_all.deb'.
+dpkg-deb: building package 'science-workflow' in '../science-workflow_1.14.7_all.deb'.
+dpkg-deb: building package 'science-imageanalysis-dev' in '../science-imageanalysis-dev_1.14.7_all.deb'.
 dpkg-deb: building package 'science-distributedcomputing' in '../science-distributedcomputing_1.14.7_all.deb'.
-dpkg-deb: building package 'science-mathematics' in '../science-mathematics_1.14.7_all.deb'.
-dpkg-deb: building package 'science-simulations' in '../science-simulations_1.14.7_all.deb'.
+dpkg-deb: building package 'science-numericalcomputation' in '../science-numericalcomputation_1.14.7_all.deb'.
+dpkg-deb: building package 'science-linguistics' in '../science-linguistics_1.14.7_all.deb'.
 dpkg-deb: building package 'science-economics' in '../science-economics_1.14.7_all.deb'.
-dpkg-deb: building package 'science-mathematics-dev' in '../science-mathematics-dev_1.14.7_all.deb'.
-dpkg-deb: building package 'science-statistics' in '../science-statistics_1.14.7_all.deb'.
+dpkg-deb: building package 'science-physics' in '../science-physics_1.14.7_all.deb'.
 dpkg-deb: building package 'science-electrophysiology' in '../science-electrophysiology_1.14.7_all.deb'.
-dpkg-deb: building package 'science-typesetting' in '../science-typesetting_1.14.7_all.deb'.
-dpkg-deb: building package 'science-meteorology' in '../science-meteorology_1.14.7_all.deb'.
-dpkg-deb: building package 'science-engineering' in '../science-engineering_1.14.7_all.deb'.
-dpkg-deb: building package 'science-viewing' in '../science-viewing_1.14.7_all.deb'.
-dpkg-deb: building package 'science-meteorology-dev' in '../science-meteorology-dev_1.14.7_all.deb'.
-dpkg-deb: building package 'science-engineering-dev' in '../science-engineering-dev_1.14.7_all.deb'.
-dpkg-deb: building package 'science-financial' in '../science-financial_1.14.7_all.deb'.
-dpkg-deb: building package 'science-viewing-dev' in '../science-viewing-dev_1.14.7_all.deb'.
-dpkg-deb: building package 'science-nanoscale-physics' in '../science-nanoscale-physics_1.14.7_all.deb'.
-dpkg-deb: building package 'science-workflow' in '../science-workflow_1.14.7_all.deb'.
-dpkg-deb: building package 'science-nanoscale-physics-dev' in '../science-nanoscale-physics-dev_1.14.7_all.deb'.
+dpkg-deb: building package 'science-logic' in '../science-logic_1.14.7_all.deb'.
+dpkg-deb: building package 'science-physics-dev' in '../science-physics-dev_1.14.7_all.deb'.
+dpkg-deb: building package 'science-presentation' in '../science-presentation_1.14.7_all.deb'.
+dpkg-deb: building package 'science-machine-learning' in '../science-machine-learning_1.14.7_all.deb'.
  dpkg-genbuildinfo --build=binary -O../debian-science_1.14.7_armhf.buildinfo
  dpkg-genchanges --build=binary -O../debian-science_1.14.7_armhf.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -624,12 +657,14 @@
 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/29363/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/29363/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/26190 and its subdirectories
-I: Current time: Thu Nov 28 22:30:51 -12 2024
-I: pbuilder-time-stamp: 1732876251
+I: removing directory /srv/workspace/pbuilder/29363 and its subdirectories
+I: Current time: Sat Nov 30 00:36:20 +14 2024
+I: pbuilder-time-stamp: 1732876580