Diff of the two buildlogs:

--
--- b1/build.log	2025-03-17 08:36:54.454105662 +0000
+++ b2/build.log	2025-03-17 08:47:39.001228834 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Mar 16 20:32:21 -12 2025
-I: pbuilder-time-stamp: 1742200341
+I: Current time: Mon Apr 20 04:59:58 +14 2026
+I: pbuilder-time-stamp: 1776610798
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -28,52 +28,84 @@
 dpkg-source: info: applying 0005-Clean-up-model-files-from-tests.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/30274/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/176982/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink03-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 Apr 19 15:00 /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/176982/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/176982/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]="37" [3]="1" [4]="release" [5]="aarch64-unknown-linux-gnu")
+  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=arm64
+  DEBIAN_FRONTEND=noninteractive
   DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=12 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  INVOCATION_ID='4271008cf20940b3a0d3bef987c01211'
-  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='30274'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=7a853a2a8b3f4d1dae9d3a4cd71fa43b
+  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=176982
   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.7WmN0n7V/pbuilderrc_0PqV --distribution unstable --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.7WmN0n7V/b1 --logfile b1/build.log sasmodels_1.0.9-1.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.7WmN0n7V/pbuilderrc_S88P --distribution unstable --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.7WmN0n7V/b2 --logfile b2/build.log sasmodels_1.0.9-1.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 codethink04-arm64 6.1.0-32-cloud-arm64 #1 SMP Debian 6.1.129-1 (2025-03-06) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-32-cloud-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/30274/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/176982/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -293,7 +325,7 @@
 Get: 162 http://deb.debian.org/debian unstable/main arm64 python3-snowballstemmer all 2.2.0-4 [58.0 kB]
 Get: 163 http://deb.debian.org/debian unstable/main arm64 sphinx-common all 8.1.3-5 [617 kB]
 Get: 164 http://deb.debian.org/debian unstable/main arm64 python3-sphinx all 8.1.3-5 [468 kB]
-Fetched 124 MB in 1s (184 MB/s)
+Fetched 124 MB in 1s (86.8 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-minimal:arm64.
 (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 ... 19898 files and directories currently installed.)
@@ -832,8 +864,8 @@
 Setting up tzdata (2025a-2) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Mon Mar 17 08:33:14 UTC 2025.
-Universal Time is now:  Mon Mar 17 08:33:14 UTC 2025.
+Local time is now:      Sun Apr 19 15:01:09 UTC 2026.
+Universal Time is now:  Sun Apr 19 15:01:09 UTC 2026.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up unicode-data (15.1.0-1) ...
@@ -991,7 +1023,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/sasmodels-1.0.9/ && 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  > ../sasmodels_1.0.9-1_source.changes
+I: user script /srv/workspace/pbuilder/176982/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/176982/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/sasmodels-1.0.9/ && 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  > ../sasmodels_1.0.9-1_source.changes
 dpkg-buildpackage: info: source package sasmodels
 dpkg-buildpackage: info: source version 1.0.9-1
 dpkg-buildpackage: info: source distribution unstable
@@ -1459,7 +1495,7 @@
 rm -rf api
 "python3" genapi.py
 "python3" genmodel.py ../sasmodels/models/adsorbed_layer.py ../sasmodels/models/barbell.py ../sasmodels/models/bcc_paracrystal.py ../sasmodels/models/be_polyelectrolyte.py ../sasmodels/models/binary_hard_sphere.py ../sasmodels/models/broad_peak.py ../sasmodels/models/capped_cylinder.py ../sasmodels/models/core_multi_shell.py ../sasmodels/models/core_shell_bicelle.py ../sasmodels/models/core_shell_bicelle_elliptical.py ../sasmodels/models/core_shell_bicelle_elliptical_belt_rough.py ../sasmodels/models/core_shell_cylinder.py ../sasmodels/models/core_shell_ellipsoid.py ../sasmodels/models/core_shell_parallelepiped.py ../sasmodels/models/core_shell_sphere.py ../sasmodels/models/correlation_length.py ../sasmodels/models/cylinder.py ../sasmodels/models/dab.py ../sasmodels/models/ellipsoid.py ../sasmodels/models/elliptical_cylinder.py ../sasmodels/models/fcc_paracrystal.py ../sasmodels/models/flexible_cylinder.py ../sasmodels/models/flexible_cylinder_elliptical.py ../sasmodels/models/fractal.py ../sasmodels/models/fractal_core_shell.py ../sasmodels/models/fuzzy_sphere.py ../sasmodels/models/gauss_lorentz_gel.py ../sasmodels/models/gaussian_peak.py ../sasmodels/models/gel_fit.py ../sasmodels/models/guinier.py ../sasmodels/models/guinier_porod.py ../sasmodels/models/hardsphere.py ../sasmodels/models/hayter_msa.py ../sasmodels/models/hollow_cylinder.py ../sasmodels/models/hollow_rectangular_prism.py ../sasmodels/models/hollow_rectangular_prism_thin_walls.py ../sasmodels/models/lamellar.py ../sasmodels/models/lamellar_hg.py ../sasmodels/models/lamellar_hg_stack_caille.py ../sasmodels/models/lamellar_stack_caille.py ../sasmodels/models/lamellar_stack_paracrystal.py ../sasmodels/models/line.py ../sasmodels/models/linear_pearls.py ../sasmodels/models/lorentz.py ../sasmodels/models/mass_fractal.py ../sasmodels/models/mass_surface_fractal.py ../sasmodels/models/micromagnetic_FF_3D.py ../sasmodels/models/mono_gauss_coil.py ../sasmodels/models/multilayer_vesicle.py ../sasmodels/models/onion.py ../sasmodels/models/parallelepiped.py ../sasmodels/models/peak_lorentz.py ../sasmodels/models/pearl_necklace.py ../sasmodels/models/poly_gauss_coil.py ../sasmodels/models/polymer_excl_volume.py ../sasmodels/models/polymer_micelle.py ../sasmodels/models/porod.py ../sasmodels/models/power_law.py ../sasmodels/models/pringle.py ../sasmodels/models/raspberry.py ../sasmodels/models/rectangular_prism.py ../sasmodels/models/rpa.py ../sasmodels/models/sc_paracrystal.py ../sasmodels/models/sphere.py ../sasmodels/models/spherical_sld.py ../sasmodels/models/spinodal.py ../sasmodels/models/squarewell.py ../sasmodels/models/stacked_disks.py ../sasmodels/models/star_polymer.py ../sasmodels/models/stickyhardsphere.py ../sasmodels/models/superball.py ../sasmodels/models/surface_fractal.py ../sasmodels/models/teubner_strey.py ../sasmodels/models/triaxial_ellipsoid.py ../sasmodels/models/two_lorentzian.py ../sasmodels/models/two_power_law.py ../sasmodels/models/unified_power_Rg.py ../sasmodels/models/vesicle.py
-Matplotlib created a temporary cache directory at /tmp/matplotlib-gadv2y06 because the default path (/nonexistent/first-build/.config/matplotlib) is not a writable directory; it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.
+Matplotlib created a temporary cache directory at /tmp/matplotlib-iqwz5qf2 because the default path (/nonexistent/second-build/.config/matplotlib) is not a writable directory; it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.
 ** 'Normal' processing **
 generating rst model/adsorbed_layer.rst
 1: docs
@@ -2280,7 +2316,7 @@
 /usr/local/lib/python3.13/dist-packages
 /usr/lib/python3/dist-packages
 loading translations [en]... done
-Matplotlib created a temporary cache directory at /tmp/matplotlib-kmarn_va because the default path (/nonexistent/first-build/.config/matplotlib) is not a writable directory; it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.
+Matplotlib created a temporary cache directory at /tmp/matplotlib-0y2l_s9x because the default path (/nonexistent/second-build/.config/matplotlib) is not a writable directory; it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.
 /build/reproducible-path/sasmodels-1.0.9/doc/_extensions/dollarmath.py:51: SyntaxWarning: invalid escape sequence '\$'
   assert replace_dollar(u"dollar\$ escape")==u"dollar$ escape"
 /build/reproducible-path/sasmodels-1.0.9/doc/_extensions/dollarmath.py:52: SyntaxWarning: invalid escape sequence '\$'
@@ -2907,7 +2943,7 @@
 sasmodels/compare.py::sasmodels.compare.push_seed PASSED                 [ 50%]
 sasmodels/exception.py::sasmodels.exception.annotate_exception PASSED    [100%]
 
-============================== 2 passed in 0.74s ===============================
+============================== 2 passed in 1.62s ===============================
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=pybuild
    dh_prep -O--buildsystem=pybuild
@@ -3571,12 +3607,14 @@
 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/176982/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/176982/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/30274 and its subdirectories
-I: Current time: Sun Mar 16 20:36:53 -12 2025
-I: pbuilder-time-stamp: 1742200613
+I: removing directory /srv/workspace/pbuilder/176982 and its subdirectories
+I: Current time: Mon Apr 20 05:10:37 +14 2026
+I: pbuilder-time-stamp: 1776611437