Diff of the two buildlogs:

--
--- b1/build.log	2025-03-10 00:54:44.599256820 +0000
+++ b2/build.log	2025-03-10 00:55:53.212161973 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sat Apr 11 19:17:12 -12 2026
-I: pbuilder-time-stamp: 1775978232
+I: Current time: Mon Mar 10 14:54:47 +14 2025
+I: pbuilder-time-stamp: 1741568087
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -22,52 +22,84 @@
 dpkg-source: info: unpacking harec_0.24.2-4.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3528936/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/680391/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink04-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 Mar 10 00:54 /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/680391/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/680391/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='35206798d95043e4952f107362e3be35'
-  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='3528936'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=97d38a2b6ce948d6b464ffc1f214f37e
+  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=680391
   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.Js2t3EGx/pbuilderrc_tGKS --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.Js2t3EGx/b1 --logfile b1/build.log harec_0.24.2-4.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.Js2t3EGx/pbuilderrc_8qP8 --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.Js2t3EGx/b2 --logfile b2/build.log harec_0.24.2-4.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 codethink03-arm64 6.1.0-31-cloud-arm64 #1 SMP Debian 6.1.128-1 (2025-02-07) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-31-cloud-arm64 #1 SMP Debian 6.1.128-1 (2025-02-07) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3528936/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4 11:20 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/680391/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -139,7 +171,7 @@
 Get: 30 http://deb.debian.org/debian unstable/main arm64 debhelper all 13.24.1 [920 kB]
 Get: 31 http://deb.debian.org/debian unstable/main arm64 qbe arm64 1.2-2 [85.6 kB]
 Get: 32 http://deb.debian.org/debian unstable/main arm64 scdoc arm64 1.11.3-1+b1 [14.4 kB]
-Fetched 20.2 MB in 0s (193 MB/s)
+Fetched 20.2 MB in 0s (150 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package sensible-utils.
 (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 ... 19897 files and directories currently installed.)
@@ -282,7 +314,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/harec-0.24.2/ && 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  > ../harec_0.24.2-4_source.changes
+I: user script /srv/workspace/pbuilder/680391/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/680391/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/harec-0.24.2/ && 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  > ../harec_0.24.2-4_source.changes
 dpkg-buildpackage: info: source package harec
 dpkg-buildpackage: info: source version 0.24.2-4
 dpkg-buildpackage: info: source distribution unstable
@@ -347,7 +383,6 @@
 make[2]: Entering directory '/build/reproducible-path/harec-0.24.2'
 HAREC	.cache/rt.ssa
 CC	tests/30-reduction.o
-./scripts/version: 4: Bad substitution
 QBE	.cache/rt.s
 HAREC	.cache/testmod.ssa
 HAREC	.cache/tests_01_arrays.ssa
@@ -375,14 +410,14 @@
 HAREC	.cache/tests_26_regression.ssa
 HAREC	.cache/tests_27_rt.ssa
 HAREC	.cache/tests_28_insert.ssa
-CCLD	tests/30-reduction
 HAREC	.cache/tests_29_unarithm.ssa
+CCLD	tests/30-reduction
 HAREC	.cache/tests_31_postfix.ssa
 HAREC	.cache/tests_32_copy.ssa
 HAREC	.cache/tests_33_yield.ssa
 HAREC	.cache/tests_35_floats.ssa
-AS	.cache/rt.o
 HAREC	.cache/tests_36_defines.ssa
+AS	.cache/rt.o
 QBE	.cache/testmod.s
 QBE	.cache/tests_01_arrays.s
 QBE	.cache/tests_02_integers.s
@@ -393,8 +428,8 @@
 QBE	.cache/tests_07_aliases.s
 QBE	.cache/tests_08_slices.s
 QBE	.cache/tests_09_funcs.s
-QBE	.cache/tests_11_globals.s
 HAREC	.cache/tests_10_binarithms.ssa
+QBE	.cache/tests_11_globals.s
 QBE	.cache/tests_12_loops.s
 QBE	.cache/tests_13_tagged.s
 QBE	.cache/tests_14_switch.s
@@ -416,13 +451,13 @@
 QBE	.cache/tests_31_postfix.s
 QBE	.cache/tests_32_copy.s
 QBE	.cache/tests_33_yield.s
-QBE	.cache/tests_35_floats.s
 HAREC	.cache/tests_34_declarations.ssa
+QBE	.cache/tests_35_floats.s
 QBE	.cache/tests_36_defines.s
 AS	.cache/testmod.o
+HAREC	.cache/tests_00_literals.ssa
 AS	.cache/tests_01_arrays.o
 AS	.cache/tests_02_integers.o
-HAREC	.cache/tests_00_literals.ssa
 AS	.cache/tests_03_pointers.o
 AS	.cache/tests_04_strings.o
 AS	.cache/tests_05_implicit_casts.o
@@ -432,6 +467,7 @@
 AS	.cache/tests_09_funcs.o
 QBE	.cache/tests_10_binarithms.s
 AS	.cache/tests_11_globals.o
+AS	.cache/tests_12_loops.o
 AS	.cache/tests_13_tagged.o
 AS	.cache/tests_14_switch.o
 QBE	.cache/tests_15_enums.s
@@ -450,8 +486,8 @@
 AS	.cache/tests_28_insert.o
 AS	.cache/tests_29_unarithm.o
 AS	.cache/tests_31_postfix.o
-AS	.cache/tests_33_yield.o
 AS	.cache/tests_32_copy.o
+AS	.cache/tests_33_yield.o
 QBE	.cache/tests_34_declarations.s
 AS	.cache/tests_35_floats.o
 AS	.cache/tests_36_defines.o
@@ -467,11 +503,11 @@
 LD	tests/09-funcs	
 AS	.cache/tests_10_binarithms.o
 LD	tests/11-globals	
-AS	.cache/tests_12_loops.o
+LD	tests/12-loops	
 LD	tests/13-tagged	
 LD	tests/14-switch	
-LD	tests/16-defer	
 AS	.cache/tests_15_enums.o
+LD	tests/16-defer	
 LD	tests/17-alloc	
 LD	tests/18-match	
 LD	tests/19-append	
@@ -491,14 +527,13 @@
 AS	.cache/tests_34_declarations.o
 LD	tests/35-floats	
 LD	tests/36-defines	
+AS	.cache/tests_00_literals.o
 LD	tests/10-binarithms	
 LD	tests/15-enums	
 LD	tests/24-imports	
-LD	tests/12-loops	
 LD	tests/34-declarations	
-AS	.cache/tests_00_literals.o
 LD	tests/00-literals	
-Running harec test suite at Sun Apr 12 07:17:34  2026
+Running harec test suite at Mon Mar 10 00:55:28  2025
 
 00-literals          ...PASS
 01-arrays            ...PASS
@@ -538,7 +573,7 @@
 35-floats            ...PASS
 36-defines           ...PASS
 
-37 tests:	37 passed	0 failed	in 2 seconds
+37 tests:	37 passed	0 failed	in 18 seconds
 rm .cache/tests_01_arrays.s .cache/tests_21_tuples.s .cache/tests_05_implicit_casts.s .cache/tests_12_loops.s .cache/tests_28_insert.s .cache/tests_09_funcs.s .cache/tests_19_append.s .cache/tests_13_tagged.s .cache/tests_14_switch.s .cache/tests_24_imports.s .cache/tests_08_slices.s .cache/testmod.s .cache/tests_25_promotion.s .cache/tests_03_pointers.s .cache/tests_06_structs.s .cache/tests_10_binarithms.s .cache/tests_20_if.s .cache/tests_27_rt.s .cache/tests_16_defer.s .cache/tests_07_aliases.s .cache/tests_22_delete.s .cache/tests_00_literals.s .cache/tests_31_postfix.s .cache/tests_36_defines.s .cache/tests_26_regression.s .cache/tests_02_integers.s .cache/tests_23_errors.s .cache/tests_15_enums.s .cache/tests_17_alloc.s .cache/tests_33_yield.s .cache/tests_11_globals.s .cache/tests_35_floats.s .cache/tests_18_match.s .cache/tests_04_strings.s .cache/tests_34_declarations.s .cache/tests_32_copy.s .cache/tests_29_unarithm.s
 make[2]: Leaving directory '/build/reproducible-path/harec-0.24.2'
 make[1]: Leaving directory '/build/reproducible-path/harec-0.24.2'
@@ -578,12 +613,14 @@
 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/680391/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/680391/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/3528936 and its subdirectories
-I: Current time: Sat Apr 11 19:17:41 -12 2026
-I: pbuilder-time-stamp: 1775978261
+I: removing directory /srv/workspace/pbuilder/680391 and its subdirectories
+I: Current time: Mon Mar 10 14:55:52 +14 2025
+I: pbuilder-time-stamp: 1741568152