Diff of the two buildlogs:

--
--- b1/build.log	2024-05-17 06:53:05.395580297 +0000
+++ b2/build.log	2024-05-17 06:53:52.621570301 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu May 16 18:51:57 -12 2024
-I: pbuilder-time-stamp: 1715928717
+I: Current time: Fri Jun 20 03:16:08 +14 2025
+I: pbuilder-time-stamp: 1750338968
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -28,52 +28,84 @@
 dpkg-source: info: applying 2to3.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/1304480/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/714432/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink01-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 Jun 19 13:16 /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/714432/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/714432/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]="21" [3]="1" [4]="release" [5]="aarch64-unknown-linux-gnu")
+  BASH_VERSION='5.2.21(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='trixie'
-  HOME='/root'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  INVOCATION_ID='75944c7feda7443693f5ed2ba6085af7'
-  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='1304480'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=ff8907d6358b4c17a5fa749d83cbb9a3
+  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=714432
   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.Zm1sVejC/pbuilderrc_1qOX --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.Zm1sVejC/b1 --logfile b1/build.log sspace_2.1.1+dfsg-7.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.Zm1sVejC/pbuilderrc_3BdO --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.Zm1sVejC/b2 --logfile b2/build.log sspace_2.1.1+dfsg-7.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 6.1.0-21-cloud-arm64 #1 SMP Debian 6.1.90-1 (2024-05-03) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-21-cloud-arm64 #1 SMP Debian 6.1.90-1 (2024-05-03) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 May 14 11:23 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/1304480/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Jun 16 17:48 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/714432/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -182,7 +214,7 @@
 Get: 63 http://deb.debian.org/debian trixie/main arm64 debhelper all 13.15.3 [901 kB]
 Get: 64 http://deb.debian.org/debian trixie/main arm64 librecode0 arm64 3.6-26 [505 kB]
 Get: 65 http://deb.debian.org/debian trixie/main arm64 recode arm64 3.6-26 [185 kB]
-Fetched 34.8 MB in 0s (112 MB/s)
+Fetched 34.8 MB in 0s (171 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libpython3.11-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 ... 19744 files and directories currently installed.)
@@ -407,8 +439,8 @@
 Setting up tzdata (2024a-4) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Fri May 17 06:52:28 UTC 2024.
-Universal Time is now:  Fri May 17 06:52:28 UTC 2024.
+Local time is now:      Thu Jun 19 13:16:27 UTC 2025.
+Universal Time is now:  Thu Jun 19 13:16:27 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -476,7 +508,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/sspace-2.1.1+dfsg/ && 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  > ../sspace_2.1.1+dfsg-7_source.changes
+I: user script /srv/workspace/pbuilder/714432/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/714432/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/sspace-2.1.1+dfsg/ && 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  > ../sspace_2.1.1+dfsg-7_source.changes
 dpkg-buildpackage: info: source package sspace
 dpkg-buildpackage: info: source version 2.1.1+dfsg-7
 dpkg-buildpackage: info: source distribution unstable
@@ -498,7 +534,7 @@
    debian/rules override_dh_auto_test
 make[1]: Entering directory '/build/reproducible-path/sspace-2.1.1+dfsg'
 debian/tests/example-tests /build/reproducible-path/sspace-2.1.1+dfsg/SSPACE_Basic.pl
-Your inserted inputs on [SSPACE_Basic v2.1] at Thu May 16 18:52:50 2024:
+Your inserted inputs on [SSPACE_Basic v2.1] at Fri Jun 20 03:16:40 2025:
 Required inputs: 
 	-l = libraries.txt
 	-s = contigs_abyss.fasta
@@ -514,37 +550,37 @@
 	-p = 0
 
 
-=>Thu May 16 18:52:50 2024: Reading, filtering and converting input sequences of library file initiated
+=>Fri Jun 20 03:16:40 2025: Reading, filtering and converting input sequences of library file initiated
 
Reading read-pairs lib1.1 @ 0       
 
                                        
 ------------------------------------------------------------
 
-=>Thu May 16 18:52:50 2024: Storing contigs to format for scaffolding
+=>Fri Jun 20 03:16:40 2025: Storing contigs to format for scaffolding
 
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 LIBRARY lib1
 ------------------------------------------------------------
 
-=>Thu May 16 18:52:50 2024: Reading contig file
+=>Fri Jun 20 03:16:40 2025: Reading contig file
 
                
-=>Thu May 16 18:52:50 2024: Building Bowtie index for contigs
+=>Fri Jun 20 03:16:40 2025: Building Bowtie index for contigs
 
-=>Thu May 16 18:52:51 2024: Mapping reads to contigs. Reading bowtie output and pairing contigs
+=>Fri Jun 20 03:16:40 2025: Mapping reads to contigs. Reading bowtie output and pairing contigs
 Setting the index via positional argument will be deprecated in a future release. Please use -x option instead.
 # reads processed: 19924
 # reads with at least one alignment: 1879 (9.43%)
 # reads that failed to align: 18045 (90.57%)
 Reported 1879 alignments
 
                
-=>Thu May 16 18:52:51 2024: Building scaffolds file
+=>Fri Jun 20 03:16:41 2025: Building scaffolds file
 
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-=>Thu May 16 18:52:51 2024: Merging contigs and creating FASTA file of scaffolds
+=>Fri Jun 20 03:16:41 2025: Merging contigs and creating FASTA file of scaffolds
 
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 ------------------------------------------------------------
 
-=>Thu May 16 18:52:51 2024: Creating summary file
+=>Fri Jun 20 03:16:41 2025: Creating summary file
 **************************************************
 
-Process run succesfully on Thu May 16 18:52:51 2024 in 0 minutes and 1 seconds
+Process run succesfully on Fri Jun 20 03:16:41 2025 in 0 minutes and 1 seconds
 
 
 make[1]: Leaving directory '/build/reproducible-path/sspace-2.1.1+dfsg'
@@ -606,12 +642,14 @@
 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/714432/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/714432/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/1304480 and its subdirectories
-I: Current time: Thu May 16 18:53:03 -12 2024
-I: pbuilder-time-stamp: 1715928783
+I: removing directory /srv/workspace/pbuilder/714432 and its subdirectories
+I: Current time: Fri Jun 20 03:16:50 +14 2025
+I: pbuilder-time-stamp: 1750339010