Diff of the two buildlogs:

--
--- b1/build.log	2024-06-06 09:49:10.839497888 +0000
+++ b2/build.log	2024-06-06 09:50:54.435107623 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Jul  9 04:11:25 -12 2025
-I: pbuilder-time-stamp: 1752077485
+I: Current time: Thu Jun  6 23:49:17 +14 2024
+I: pbuilder-time-stamp: 1717667357
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -25,52 +25,84 @@
 dpkg-source: info: unpacking libmojolicious-plugin-mailexception-perl_0.20-1.1.debian.tar.xz
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/493169/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/1344709/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos11-amd64.
+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  6 09:49 /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/1344709/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/1344709/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='amd64'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=42 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='amd64'
+  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]="x86_64-pc-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=amd64
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=20 '
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='70c7bb4d9fff48cfbaaadb7076ff5fda'
-  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='493169'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=d93171de6f074546a709deba572760d2
+  LANG=C
+  LANGUAGE=et_EE:et
+  LC_ALL=C
+  MACHTYPE=x86_64-pc-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=1344709
   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.VKHbAbXh/pbuilderrc_iA1p --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.VKHbAbXh/b1 --logfile b1/build.log libmojolicious-plugin-mailexception-perl_0.20-1.1.dsc'
-  SUDO_GID='111'
-  SUDO_UID='106'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://213.165.73.152:3128'
+  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.VKHbAbXh/pbuilderrc_lhRS --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.VKHbAbXh/b2 --logfile b2/build.log libmojolicious-plugin-mailexception-perl_0.20-1.1.dsc'
+  SUDO_GID=111
+  SUDO_UID=106
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://46.16.76.132:3128
 I: uname -a
-  Linux ionos15-amd64 6.7.12+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.7.12-1~bpo12+1 (2024-05-06) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-21-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.90-1 (2024-05-03) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Jul  9 14:05 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/493169/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Jun  5 07:42 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/1344709/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -157,7 +189,7 @@
 Get: 43 http://deb.debian.org/debian unstable/main amd64 libmime-lite-perl all 3.033-2 [68.7 kB]
 Get: 44 http://deb.debian.org/debian unstable/main amd64 libmime-tools-perl all 5.515-1 [203 kB]
 Get: 45 http://deb.debian.org/debian unstable/main amd64 libmojolicious-perl all 9.37+dfsg-1 [843 kB]
-Fetched 21.9 MB in 0s (72.1 MB/s)
+Fetched 21.9 MB in 1s (15.9 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package netbase.
 (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
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(Reading database ... 60%
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(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19705 files and directories currently installed.)
@@ -357,7 +389,11 @@
 fakeroot is already the newest version (1.35-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/libmojolicious-plugin-mailexception-perl-0.20/ && 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  > ../libmojolicious-plugin-mailexception-perl_0.20-1.1_source.changes
+I: user script /srv/workspace/pbuilder/1344709/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/1344709/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libmojolicious-plugin-mailexception-perl-0.20/ && 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  > ../libmojolicious-plugin-mailexception-perl_0.20-1.1_source.changes
 dpkg-buildpackage: info: source package libmojolicious-plugin-mailexception-perl
 dpkg-buildpackage: info: source version 0.20-1.1
 dpkg-buildpackage: info: source distribution unstable
@@ -397,30 +433,30 @@
 	make -j1 test TEST_VERBOSE=1
 make[1]: Entering directory '/build/reproducible-path/libmojolicious-plugin-mailexception-perl-0.20'
 PERL_DL_NONLAZY=1 "/usr/bin/perl" "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harness::Switches; test_harness(1, 'blib/lib', 'blib/arch')" t/*.t
-[2025-07-09 16:12:02.87505] [497683] [trace] [0TqLwpfdNtBk] GET "/"
-[2025-07-09 16:12:02.87549] [497683] [trace] [0TqLwpfdNtBk] Routing to controller "MpemTest::Ctl" and action "hello"
-[2025-07-09 16:12:02.87577] [497683] [trace] [0TqLwpfdNtBk] 200 OK (0.000702s, 1424.501/s)
-[2025-07-09 16:12:02.87839] [497683] [trace] [CXv5it57fgzW] GET "/crash"
-[2025-07-09 16:12:02.87869] [497683] [trace] [CXv5it57fgzW] Routing to controller "MpemTest::Ctl" and action "crash"
-[2025-07-09 16:12:02.88094] [497683] [error] [CXv5it57fgzW] die marker1 outside eval  at t/010-tplugun.t line 112
+[2024-06-06 09:50:45.98488] [1355557] [trace] [0zS3Ig2cnD2g] GET "/"
+[2024-06-06 09:50:45.98548] [1355557] [trace] [0zS3Ig2cnD2g] Routing to controller "MpemTest::Ctl" and action "hello"
+[2024-06-06 09:50:45.98592] [1355557] [trace] [0zS3Ig2cnD2g] 200 OK (0.001041s, 960.615/s)
+[2024-06-06 09:50:45.98932] [1355557] [trace] [9xjbnsNDzp_g] GET "/crash"
+[2024-06-06 09:50:45.98984] [1355557] [trace] [9xjbnsNDzp_g] Routing to controller "MpemTest::Ctl" and action "crash"
+[2024-06-06 09:50:45.99293] [1355557] [error] [9xjbnsNDzp_g] die marker1 outside eval  at t/010-tplugun.t line 112
 
-[2025-07-09 16:12:02.97172] [497683] [trace] [CXv5it57fgzW] Template "exception.development.html.ep" not found
-[2025-07-09 16:12:02.97201] [497683] [trace] [CXv5it57fgzW] Rendering template "exception.html.ep" from DATA section
-[2025-07-09 16:12:02.97311] [497683] [trace] [CXv5it57fgzW] 500 Internal Server Error (0.094706s, 10.559/s)
-[2025-07-09 16:12:02.97758] [497683] [trace] [C3ixR7VJhW-B] GET "/crash_sig"
-[2025-07-09 16:12:02.97794] [497683] [trace] [C3ixR7VJhW-B] Routing to controller "MpemTest::Ctl" and action "crash_sig"
-[2025-07-09 16:12:02.97905] [497683] [error] [C3ixR7VJhW-B] die marker2 sig at t/010-tplugun.t line 120.
+[2024-06-06 09:50:45.99473] [1355557] [trace] [9xjbnsNDzp_g] Template "exception.development.html.ep" not found
+[2024-06-06 09:50:45.99492] [1355557] [trace] [9xjbnsNDzp_g] Rendering template "exception.html.ep" from DATA section
+[2024-06-06 09:50:45.99612] [1355557] [trace] [9xjbnsNDzp_g] 500 Internal Server Error (0.006781s, 147.471/s)
+[2024-06-06 09:50:46.00178] [1355557] [trace] [GZkZkhVYlkD3] GET "/crash_sig"
+[2024-06-06 09:50:46.00234] [1355557] [trace] [GZkZkhVYlkD3] Routing to controller "MpemTest::Ctl" and action "crash_sig"
+[2024-06-06 09:50:46.00388] [1355557] [error] [GZkZkhVYlkD3] die marker2 sig at t/010-tplugun.t line 120.
 
-[2025-07-09 16:12:02.97923] [497683] [trace] [C3ixR7VJhW-B] Template "exception.development.html.ep" not found
-[2025-07-09 16:12:02.97933] [497683] [trace] [C3ixR7VJhW-B] Rendering cached template "exception.html.ep" from DATA section
-[2025-07-09 16:12:02.97949] [497683] [trace] [C3ixR7VJhW-B] 500 Internal Server Error (0.001901s, 526.039/s)
-[2025-07-09 16:12:02.98195] [497683] [trace] [NSSr0COALCS_] GET "/crash_sub"
-[2025-07-09 16:12:02.98222] [497683] [trace] [NSSr0COALCS_] Routing to controller "MpemTest::Ctl" and action "crash_sub"
-[2025-07-09 16:12:02.98322] [497683] [error] [NSSr0COALCS_] mail exception marker3 at t/010-tplugun.t line 124 at t/010-tplugun.t line 124.
+[2024-06-06 09:50:46.00420] [1355557] [trace] [GZkZkhVYlkD3] Template "exception.development.html.ep" not found
+[2024-06-06 09:50:46.00432] [1355557] [trace] [GZkZkhVYlkD3] Rendering cached template "exception.html.ep" from DATA section
+[2024-06-06 09:50:46.00461] [1355557] [trace] [GZkZkhVYlkD3] 500 Internal Server Error (0.002819s, 354.736/s)
+[2024-06-06 09:50:46.00883] [1355557] [trace] [5lP1jx0fE6UV] GET "/crash_sub"
+[2024-06-06 09:50:46.00932] [1355557] [trace] [5lP1jx0fE6UV] Routing to controller "MpemTest::Ctl" and action "crash_sub"
+[2024-06-06 09:50:46.01104] [1355557] [error] [5lP1jx0fE6UV] mail exception marker3 at t/010-tplugun.t line 124 at t/010-tplugun.t line 124.
 
-[2025-07-09 16:12:02.98339] [497683] [trace] [NSSr0COALCS_] Template "exception.development.html.ep" not found
-[2025-07-09 16:12:02.98348] [497683] [trace] [NSSr0COALCS_] Rendering cached template "exception.html.ep" from DATA section
-[2025-07-09 16:12:02.98363] [497683] [trace] [NSSr0COALCS_] 500 Internal Server Error (0.001666s, 600.240/s)
+[2024-06-06 09:50:46.01141] [1355557] [trace] [5lP1jx0fE6UV] Template "exception.development.html.ep" not found
+[2024-06-06 09:50:46.01153] [1355557] [trace] [5lP1jx0fE6UV] Rendering cached template "exception.html.ep" from DATA section
+[2024-06-06 09:50:46.01184] [1355557] [trace] [5lP1jx0fE6UV] 500 Internal Server Error (0.002986s, 334.896/s)
 t/010-tplugun.t .. 
 1..30
 ok 1 - use Test::Mojo;
@@ -455,7 +491,7 @@
 ok 30 - Additional header
 ok
 All tests successful.
-Files=1, Tests=30,  0 wallclock secs ( 0.01 usr  0.01 sys +  0.35 cusr  0.04 csys =  0.41 CPU)
+Files=1, Tests=30,  1 wallclock secs ( 0.03 usr  0.01 sys +  0.52 cusr  0.05 csys =  0.61 CPU)
 Result: PASS
 make[1]: Leaving directory '/build/reproducible-path/libmojolicious-plugin-mailexception-perl-0.20'
  fakeroot debian/rules binary
@@ -502,12 +538,14 @@
 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/1344709/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/1344709/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/493169 and its subdirectories
-I: Current time: Wed Jul  9 04:12:10 -12 2025
-I: pbuilder-time-stamp: 1752077530
+I: removing directory /srv/workspace/pbuilder/1344709 and its subdirectories
+I: Current time: Thu Jun  6 23:50:53 +14 2024
+I: pbuilder-time-stamp: 1717667453