Diff of the two buildlogs:

--
--- b1/build.log	2025-03-10 08:35:40.709971030 +0000
+++ b2/build.log	2025-03-10 08:37:58.439810657 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Apr 12 02:56:31 -12 2026
-I: pbuilder-time-stamp: 1776005791
+I: Current time: Mon Mar 10 22:35:43 +14 2025
+I: pbuilder-time-stamp: 1741595743
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -22,52 +22,84 @@
 dpkg-source: info: unpacking libmojo-ioloop-readwriteprocess-perl_0.34-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/288366/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/2461804/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 08:35 /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/2461804/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/2461804/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='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='8fd1f730182647828dcf736ea247a7f7'
-  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='288366'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=99f61dbd83bc49d9b49c4b61d2593dbb
+  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=2461804
   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.xGYxv4lj/pbuilderrc_eqJz --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.xGYxv4lj/b1 --logfile b1/build.log libmojo-ioloop-readwriteprocess-perl_0.34-1.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.xGYxv4lj/pbuilderrc_Lz2P --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.xGYxv4lj/b2 --logfile b2/build.log libmojo-ioloop-readwriteprocess-perl_0.34-1.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 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 Nov 22  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/288366/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/2461804/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -148,7 +180,7 @@
 Get: 37 http://deb.debian.org/debian trixie/main arm64 libmojolicious-perl all 9.39+dfsg-1 [845 kB]
 Get: 38 http://deb.debian.org/debian trixie/main arm64 libsub-uplevel-perl all 0.2800-3 [14.0 kB]
 Get: 39 http://deb.debian.org/debian trixie/main arm64 libtest-exception-perl all 0.43-3 [16.9 kB]
-Fetched 22.2 MB in 0s (100 MB/s)
+Fetched 22.2 MB in 0s (190 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 ... 19914 files and directories currently installed.)
@@ -321,7 +353,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/libmojo-ioloop-readwriteprocess-perl-0.34/ && 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  > ../libmojo-ioloop-readwriteprocess-perl_0.34-1_source.changes
+I: user script /srv/workspace/pbuilder/2461804/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/2461804/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libmojo-ioloop-readwriteprocess-perl-0.34/ && 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  > ../libmojo-ioloop-readwriteprocess-perl_0.34-1_source.changes
 dpkg-buildpackage: info: source package libmojo-ioloop-readwriteprocess-perl
 dpkg-buildpackage: info: source version 0.34-1
 dpkg-buildpackage: info: source distribution unstable
@@ -360,47 +396,46 @@
 1..12
 ok
 TEST error print
-TEST error print
 >> Mojo::IOLoop::ReadWriteProcess::_fork(): Fork: {
     use warnings;
     use strict;
     shift();
     print "$_$/" foreach (@_);
 }
->> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Exit status: 56
+>> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Exit status: 40
 >> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Returns: nothing
 >> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Errors: 
->> Mojo::IOLoop::ReadWriteProcess::_shutdown(): Shutdown 297784
+>> Mojo::IOLoop::ReadWriteProcess::_shutdown(): Shutdown 2477488
 >> Mojo::IOLoop::ReadWriteProcess::_fork(): Fork: {
     use warnings;
     use strict;
     shift();
     print "$_$/" foreach (@_);
 }
->> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Exit status: 48
+>> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Exit status: 176
 >> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Returns: nothing
 >> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Errors: 
->> Mojo::IOLoop::ReadWriteProcess::_shutdown(): Shutdown 297792
+>> Mojo::IOLoop::ReadWriteProcess::_shutdown(): Shutdown 2477490
 >> Mojo::IOLoop::ReadWriteProcess::_fork(): Fork: {
     use warnings;
     use strict;
     shift();
     print "$_$/" foreach (@_);
 }
->> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Exit status: 200
+>> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Exit status: 72
 >> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Returns: nothing
 >> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Errors: 
->> Mojo::IOLoop::ReadWriteProcess::_shutdown(): Shutdown 297801
+>> Mojo::IOLoop::ReadWriteProcess::_shutdown(): Shutdown 2477496
 >> Mojo::IOLoop::ReadWriteProcess::_fork(): Fork: {
     use warnings;
     use strict;
     shift();
     print "$_$/" foreach (@_);
 }
->> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Exit status: 0
+>> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Exit status: 144
 >> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Returns: nothing
 >> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Errors: 
->> Mojo::IOLoop::ReadWriteProcess::_shutdown(): Shutdown 297811
+>> Mojo::IOLoop::ReadWriteProcess::_shutdown(): Shutdown 2477503
 >> Mojo::IOLoop::ReadWriteProcess::_fork(): Fork: {
     use warnings;
     use strict;
@@ -412,19 +447,19 @@
     )->start->wait_stop->read_all_stdout, 'sub-sub-process', 'process(code) works from process(code)';
     print 'DONE';
 }
->> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Exit status: 136
+>> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Exit status: 40
 >> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Returns: 1
 >> Mojo::IOLoop::ReadWriteProcess::_fork_collect_status(): Forked code Process Errors: 
->> Mojo::IOLoop::ReadWriteProcess::_shutdown(): Shutdown 297824
+>> Mojo::IOLoop::ReadWriteProcess::_shutdown(): Shutdown 2477513
 >> Mojo::IOLoop::ReadWriteProcess::_open(): Execute: '/I/do/not/exist'
 >> Mojo::IOLoop::ReadWriteProcess::_open(): Execute: 'sleep 0.2'
 >> Mojo::IOLoop::ReadWriteProcess::_open_collect_status(): Forked code Process Exit status: 0
 >> Mojo::IOLoop::ReadWriteProcess::_open(): Execute: 'perl', '/build/reproducible-path/libmojo-ioloop-readwriteprocess-perl-0.34/t/data/simple_rwp.pl'
 >> Mojo::IOLoop::ReadWriteProcess::_open_collect_status(): Forked code Process Exit status: 0
->> Mojo::IOLoop::ReadWriteProcess::_shutdown(): Shutdown 297912
+>> Mojo::IOLoop::ReadWriteProcess::_shutdown(): Shutdown 2477618
 >> Mojo::IOLoop::ReadWriteProcess::_open(): Execute: '/build/reproducible-path/libmojo-ioloop-readwriteprocess-perl-0.34/t/data/sigchld_handler.pl'
 >> Mojo::IOLoop::ReadWriteProcess::_open_collect_status(): Forked code Process Exit status: 0
->> Mojo::IOLoop::ReadWriteProcess::_shutdown(): Shutdown 297966
+>> Mojo::IOLoop::ReadWriteProcess::_shutdown(): Shutdown 2477737
 t/01_run.t ............... 
 # Subtest: process
     ok 1 - Mojo::IOLoop::ReadWriteProcess->can(...)
@@ -816,12 +851,12 @@
     ok 2 - Status fired 6 times
     ok 3 - Status fired 1 times
     ok 4 - detection works
-    ok 5 - Correct status from process 302656
-    ok 6 - Correct status from process 302661
-    ok 7 - Correct status from process 302658
-    ok 8 - Correct status from process 302654
-    ok 9 - Correct status from process 302659
-    ok 10 - Correct status from process 302655
+    ok 5 - Correct status from process 2483735
+    ok 6 - Correct status from process 2483734
+    ok 7 - Correct status from process 2483732
+    ok 8 - Correct status from process 2483730
+    ok 9 - Correct status from process 2483729
+    ok 10 - Correct status from process 2483736
     1..10
 ok 2 - autodetect_fork
 # Subtest: subreaper
@@ -1110,7 +1145,7 @@
     ok 1 - Croaks if no sub or Mojo::IOLoop::ReadWriteProcess given
     ok 2
     ok 3 - procs interface contains the added pids
-    ok 4 - Parent contains pid 317374
+    ok 4 - Parent contains pid 2494285
     ok 5
     ok 6
     ok 7
@@ -1118,7 +1153,7 @@
 ok 1 - container
 # Subtest: container_2
     ok 1 - procs interface contains the added pids
-    ok 2 - Parent contains pid 317750
+    ok 2 - Parent contains pid 2495415
     ok 3
     ok 4
     ok 5
@@ -1127,45 +1162,45 @@
 ok 2 - container_2
 # Subtest: container_3
     ok 1 - procs interface contains the added pids
-    ok 2 - Parent contains pid 318862
+    ok 2 - Parent contains pid 2496931
     ok 3
     ok 4
     ok 5
     ok 6 - procs interface contains the added pids
-    ok 7 - Parent contains pid 320284
+    ok 7 - Parent contains pid 2498198
     ok 8
     ok 9
     ok 10
     ok 11
     ok 12 - procs interface contains the added pids
-    ok 13 - Parent contains pid 323015
+    ok 13 - Parent contains pid 2499545
     ok 14
     ok 15
     ok 16
     ok 17 - procs interface contains the added pids
-    ok 18 - Parent contains pid 323904
+    ok 18 - Parent contains pid 2500128
     ok 19
     ok 20
     ok 21
     ok 22 - procs interface contains the added pids
-    ok 23 - Parent contains pid 324792
+    ok 23 - Parent contains pid 2500775
     ok 24
     ok 25
     ok 26
     ok 27
     ok 28
     ok 29 - procs interface contains the added pids
-    ok 30 - Parent contains pid 326597
+    ok 30 - Parent contains pid 2501746
     ok 31
     ok 32
     ok 33
     ok 34 - procs interface contains the added pids
-    ok 35 - Parent contains pid 330281
+    ok 35 - Parent contains pid 2502968
     ok 36
     ok 37
     ok 38
     ok 39 - procs interface contains the added pids
-    ok 40 - Parent contains pid 332666
+    ok 40 - Parent contains pid 2503798
     ok 41
     ok 42
     ok 43
@@ -1175,7 +1210,7 @@
 ok
 t/13_shared.t ............ skipped: Skipped unless TEST_SHARED is set
 All tests successful.
-Files=15, Tests=69, 101 wallclock secs ( 0.13 usr  0.06 sys +  4.59 cusr  1.88 csys =  6.66 CPU)
+Files=15, Tests=69, 101 wallclock secs ( 0.13 usr  0.04 sys +  4.45 cusr  1.71 csys =  6.33 CPU)
 Result: PASS
    create-stamp debian/debhelper-build-stamp
    dh_prep
@@ -1255,12 +1290,14 @@
 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/2461804/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/2461804/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/288366 and its subdirectories
-I: Current time: Sun Apr 12 02:58:37 -12 2026
-I: pbuilder-time-stamp: 1776005917
+I: removing directory /srv/workspace/pbuilder/2461804 and its subdirectories
+I: Current time: Mon Mar 10 22:37:57 +14 2025
+I: pbuilder-time-stamp: 1741595877