Diff of the two buildlogs:

--
--- b1/build.log	2023-04-11 18:51:05.795733244 +0000
+++ b2/build.log	2023-04-11 18:54:03.301783726 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon May 13 13:11:44 -12 2024
-I: pbuilder-time-stamp: 1715649104
+I: Current time: Wed Apr 12 08:51:09 +14 2023
+I: pbuilder-time-stamp: 1681239069
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/bookworm-reproducible-base.tgz]
 I: copying local configuration
@@ -16,7 +16,7 @@
 I: copying [./spoa_4.0.8.orig.tar.gz]
 I: copying [./spoa_4.0.8-1.debian.tar.xz]
 I: Extracting source
-gpgv: Signature made Tue Nov 29 08:41:56 2022 -12
+gpgv: Signature made Wed Nov 30 10:41:56 2022 +14
 gpgv:                using RSA key F1F007320A035541F0A663CA578A0494D1C646D1
 gpgv:                issuer "tille@debian.org"
 gpgv: Can't check signature: No public key
@@ -30,11 +30,20 @@
 dpkg-source: info: applying shared_and_static.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/28582/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/27448/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink12-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
+lrwxrwxrwx 1 root root 4 Jan  6 03:20 /bin/sh -> dash
+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/27448/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/27448/tmp/hooks/D02_print_environment starting
 I: set
   BUILDDIR='/build'
-  BUILDUSERGECOS='first user,first room,first work-phone,first home-phone,first other'
-  BUILDUSERNAME='pbuilder1'
+  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=8'
@@ -44,38 +53,38 @@
   IFS=' 	
   '
   LANG='C'
-  LANGUAGE='en_US:en'
+  LANGUAGE='nl_BE:nl'
   LC_ALL='C'
   MAIL='/var/mail/root'
   OPTIND='1'
-  PATH='/usr/sbin:/usr/bin:/sbin:/bin:/usr/games'
+  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'
-  PPID='28582'
+  PPID='27448'
   PS1='# '
   PS2='> '
   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.RipunGcK/pbuilderrc_HY3G --distribution bookworm --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.RipunGcK/b1 --logfile b1/build.log spoa_4.0.8-1.dsc'
+  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.RipunGcK/pbuilderrc_qPMJ --distribution bookworm --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.RipunGcK/b2 --logfile b2/build.log --extrapackages usrmerge spoa_4.0.8-1.dsc'
   SUDO_GID='117'
   SUDO_UID='110'
   SUDO_USER='jenkins'
   TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
+  TZ='/usr/share/zoneinfo/Etc/GMT-14'
   USER='root'
   USERNAME='root'
   _='/usr/bin/systemd-run'
   http_proxy='http://192.168.101.16:3128'
 I: uname -a
-  Linux codethink13-arm64 4.15.0-208-generic #220-Ubuntu SMP Mon Mar 20 14:28:12 UTC 2023 aarch64 GNU/Linux
+  Linux i-capture-the-hostname 4.15.0-208-generic #220-Ubuntu SMP Mon Mar 20 14:28:12 UTC 2023 aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 May 13 04:48 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/28582/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Apr 10 00:26 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/27448/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -182,7 +191,7 @@
 Get: 55 http://deb.debian.org/debian bookworm/main arm64 libcereal-dev arm64 1.3.2+dfsg-4 [221 kB]
 Get: 56 http://deb.debian.org/debian bookworm/main arm64 libgtest-dev arm64 1.12.1-0.2 [231 kB]
 Get: 57 http://deb.debian.org/debian bookworm/main arm64 libsimde-dev all 0.7.4~rc2-2 [377 kB]
-Fetched 32.3 MB in 3s (11.2 MB/s)
+Fetched 32.3 MB in 1s (36.5 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libproc2-0: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 ... 19616 files and directories currently installed.)
@@ -424,8 +433,17 @@
 Writing extended state information...
 Building tag database...
  -> Finished parsing the build-deps
+Reading package lists...
+Building dependency tree...
+Reading state information...
+usrmerge is already the newest version (35).
+0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/spoa-4.0.8/ && 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  > ../spoa_4.0.8-1_source.changes
+I: user script /srv/workspace/pbuilder/27448/tmp/hooks/A99_set_merged_usr starting
+Re-configuring usrmerge...
+I: user script /srv/workspace/pbuilder/27448/tmp/hooks/A99_set_merged_usr finished
+hostname: Temporary failure in name resolution
+I: Running cd /build/spoa-4.0.8/ && 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  > ../spoa_4.0.8-1_source.changes
 dpkg-buildpackage: info: source package spoa
 dpkg-buildpackage: info: source version 4.0.8-1
 dpkg-buildpackage: info: source distribution unstable
@@ -554,47 +572,47 @@
 
 [----------] 19 tests from SpoaTest
 [ RUN      ] SpoaTest.Clear
-[       OK ] SpoaTest.Clear (342 ms)
+[       OK ] SpoaTest.Clear (369 ms)
 [ RUN      ] SpoaTest.Local
-[       OK ] SpoaTest.Local (179 ms)
+[       OK ] SpoaTest.Local (191 ms)
 [ RUN      ] SpoaTest.LocalAffine
-[       OK ] SpoaTest.LocalAffine (249 ms)
+[       OK ] SpoaTest.LocalAffine (267 ms)
 [ RUN      ] SpoaTest.LocalConvex
-[       OK ] SpoaTest.LocalConvex (393 ms)
+[       OK ] SpoaTest.LocalConvex (422 ms)
 [ RUN      ] SpoaTest.LocalWithQualities
-[       OK ] SpoaTest.LocalWithQualities (181 ms)
+[       OK ] SpoaTest.LocalWithQualities (194 ms)
 [ RUN      ] SpoaTest.LocalAffineWithQualities
-[       OK ] SpoaTest.LocalAffineWithQualities (246 ms)
+[       OK ] SpoaTest.LocalAffineWithQualities (266 ms)
 [ RUN      ] SpoaTest.LocalConvexWithQualities
-[       OK ] SpoaTest.LocalConvexWithQualities (393 ms)
+[       OK ] SpoaTest.LocalConvexWithQualities (419 ms)
 [ RUN      ] SpoaTest.Global
-[       OK ] SpoaTest.Global (185 ms)
+[       OK ] SpoaTest.Global (193 ms)
 [ RUN      ] SpoaTest.GlobalAffine
-[       OK ] SpoaTest.GlobalAffine (246 ms)
+[       OK ] SpoaTest.GlobalAffine (265 ms)
 [ RUN      ] SpoaTest.GlobalConvex
-[       OK ] SpoaTest.GlobalConvex (380 ms)
+[       OK ] SpoaTest.GlobalConvex (412 ms)
 [ RUN      ] SpoaTest.GlobalWithQualities
-[       OK ] SpoaTest.GlobalWithQualities (182 ms)
+[       OK ] SpoaTest.GlobalWithQualities (196 ms)
 [ RUN      ] SpoaTest.GlobalAffineWithQualities
-[       OK ] SpoaTest.GlobalAffineWithQualities (247 ms)
+[       OK ] SpoaTest.GlobalAffineWithQualities (269 ms)
 [ RUN      ] SpoaTest.GlobalConvexWithQualities
-[       OK ] SpoaTest.GlobalConvexWithQualities (383 ms)
+[       OK ] SpoaTest.GlobalConvexWithQualities (414 ms)
 [ RUN      ] SpoaTest.SemiGlobal
-[       OK ] SpoaTest.SemiGlobal (175 ms)
+[       OK ] SpoaTest.SemiGlobal (185 ms)
 [ RUN      ] SpoaTest.SemiGlobalAffine
-[       OK ] SpoaTest.SemiGlobalAffine (242 ms)
+[       OK ] SpoaTest.SemiGlobalAffine (264 ms)
 [ RUN      ] SpoaTest.SemiGlobalConvex
-[       OK ] SpoaTest.SemiGlobalConvex (386 ms)
+[       OK ] SpoaTest.SemiGlobalConvex (409 ms)
 [ RUN      ] SpoaTest.SemiGlobalWithQualities
-[       OK ] SpoaTest.SemiGlobalWithQualities (168 ms)
+[       OK ] SpoaTest.SemiGlobalWithQualities (185 ms)
 [ RUN      ] SpoaTest.SemiGlobalAffineWithQualities
-[       OK ] SpoaTest.SemiGlobalAffineWithQualities (239 ms)
+[       OK ] SpoaTest.SemiGlobalAffineWithQualities (264 ms)
 [ RUN      ] SpoaTest.SemiGlobalConvexWithQualities
-[       OK ] SpoaTest.SemiGlobalConvexWithQualities (376 ms)
-[----------] 19 tests from SpoaTest (5204 ms total)
+[       OK ] SpoaTest.SemiGlobalConvexWithQualities (412 ms)
+[----------] 19 tests from SpoaTest (5608 ms total)
 
 [----------] Global test environment tear-down
-[==========] 22 tests from 2 test suites ran. (5204 ms total)
+[==========] 22 tests from 2 test suites ran. (5608 ms total)
 [  PASSED  ] 22 tests.
 `find . -name spoa | grep bin` test/data/sample.fastq.gz
 >Consensus LN:i:495
@@ -673,11 +691,11 @@
 dpkg-gencontrol: warning: Depends field of package libspoa-dev: substitution variable ${shlibs:Depends} used, but is not defined
    dh_md5sums -O--no-parallel
    dh_builddeb -O--no-parallel
-dpkg-deb: building package 'spoa-dbgsym' in '../spoa-dbgsym_4.0.8-1_arm64.deb'.
 dpkg-deb: building package 'spoa' in '../spoa_4.0.8-1_arm64.deb'.
+dpkg-deb: building package 'spoa-dbgsym' in '../spoa-dbgsym_4.0.8-1_arm64.deb'.
 dpkg-deb: building package 'libspoa-dev' in '../libspoa-dev_4.0.8-1_arm64.deb'.
-dpkg-deb: building package 'libspoa7.0.0-dbgsym' in '../libspoa7.0.0-dbgsym_4.0.8-1_arm64.deb'.
 dpkg-deb: building package 'libspoa7.0.0' in '../libspoa7.0.0_4.0.8-1_arm64.deb'.
+dpkg-deb: building package 'libspoa7.0.0-dbgsym' in '../libspoa7.0.0-dbgsym_4.0.8-1_arm64.deb'.
  dpkg-genbuildinfo --build=binary -O../spoa_4.0.8-1_arm64.buildinfo
  dpkg-genchanges --build=binary -O../spoa_4.0.8-1_arm64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -685,12 +703,14 @@
 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/27448/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/27448/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/28582 and its subdirectories
-I: Current time: Mon May 13 13:14:04 -12 2024
-I: pbuilder-time-stamp: 1715649244
+I: removing directory /srv/workspace/pbuilder/27448 and its subdirectories
+I: Current time: Wed Apr 12 08:54:02 +14 2023
+I: pbuilder-time-stamp: 1681239242