Diff of the two buildlogs:

--
--- b1/build.log	2024-04-03 15:21:24.359034205 +0000
+++ b2/build.log	2024-04-03 15:22:28.072308977 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Tue May  6 09:43:54 -12 2025
-I: pbuilder-time-stamp: 1746567834
+I: Current time: Thu Apr  4 05:21:27 +14 2024
+I: pbuilder-time-stamp: 1712157687
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -26,54 +26,86 @@
 dpkg-source: info: unpacking libtime-format-perl_1.16-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/14381/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/41219/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos12-i386.
+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 Apr  3 15:21 /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/41219/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/41219/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='i386'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=22 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='i386'
+  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]="i686-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=i386
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=10 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=i686
+  HOST_ARCH=i386
   IFS=' 	
   '
-  INVOCATION_ID='b36a6cf21f094bb8b9a3791f41cbe299'
-  LANG='C'
-  LANGUAGE='en_US:en'
-  LC_ALL='C'
-  LD_LIBRARY_PATH='/usr/lib/libeatmydata'
-  LD_PRELOAD='libeatmydata.so'
-  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='14381'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=b2f7481390ed4411a195980f710d8cd0
+  LANG=C
+  LANGUAGE=de_CH:de
+  LC_ALL=C
+  LD_LIBRARY_PATH=/usr/lib/libeatmydata
+  LD_PRELOAD=libeatmydata.so
+  MACHTYPE=i686-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=41219
   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.XDPxywvk/pbuilderrc_epb9 --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.XDPxywvk/b1 --logfile b1/build.log libtime-format-perl_1.16-2.dsc'
-  SUDO_GID='112'
-  SUDO_UID='107'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://85.184.249.68:3128'
+  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.XDPxywvk/pbuilderrc_BNFp --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.XDPxywvk/b2 --logfile b2/build.log libtime-format-perl_1.16-2.dsc'
+  SUDO_GID=112
+  SUDO_UID=107
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://78.137.99.97:3128
 I: uname -a
-  Linux ionos6-i386 6.1.0-18-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.76-1 (2024-02-01) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-18-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.76-1 (2024-02-01) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 May  5 17:48 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/14381/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Apr  1 11:25 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/41219/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -192,7 +224,7 @@
 Get: 73 http://deb.debian.org/debian trixie/main i386 libdatetime-format-builder-perl all 0.8300-1 [63.8 kB]
 Get: 74 http://deb.debian.org/debian trixie/main i386 libdatetime-format-iso8601-perl all 0.16-2 [22.4 kB]
 Get: 75 http://deb.debian.org/debian trixie/main i386 libmodule-build-perl all 0.423400-2 [252 kB]
-Fetched 24.8 MB in 1s (32.6 MB/s)
+Fetched 24.8 MB in 1s (46.6 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package tzdata.
 (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 ... 19876 files and directories currently installed.)
@@ -444,8 +476,8 @@
 Setting up tzdata (2024a-1) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Tue May  6 21:44:11 UTC 2025.
-Universal Time is now:  Tue May  6 21:44:11 UTC 2025.
+Local time is now:      Wed Apr  3 15:22:02 UTC 2024.
+Universal Time is now:  Wed Apr  3 15:22:02 UTC 2024.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -515,7 +547,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/libtime-format-perl-1.16/ && 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  > ../libtime-format-perl_1.16-2_source.changes
+I: user script /srv/workspace/pbuilder/41219/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/41219/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libtime-format-perl-1.16/ && 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  > ../libtime-format-perl_1.16-2_source.changes
 dpkg-buildpackage: info: source package libtime-format-perl
 dpkg-buildpackage: info: source version 1.16-2
 dpkg-buildpackage: info: source distribution unstable
@@ -708,46 +744,46 @@
 t/msec.t ......... 
 1..41
 ok 1 - use Time::Format;
-ok 2 - Bug test 1 (1: 2025/05/06 21:44:16.397    -- milli)
-ok 3 - Bug test 2 (1: 2025/05/06 21:44:16.398386 -- micro)
-ok 4 - Bug test 3 (2: 2025/05/06 21:44:16.578    -- milli)
-ok 5 - Bug test 4 (2: 2025/05/06 21:44:16.578577 -- micro)
-ok 6 - Bug test 5 (3: 2025/05/06 21:44:16.758    -- milli)
-ok 7 - Bug test 6 (3: 2025/05/06 21:44:16.758752 -- micro)
-ok 8 - Bug test 7 (4: 2025/05/06 21:44:16.938    -- milli)
-ok 9 - Bug test 8 (4: 2025/05/06 21:44:16.938925 -- micro)
-ok 10 - Bug test 9 (5: 2025/05/06 21:44:17.119    -- milli)
-ok 11 - Bug test 10 (5: 2025/05/06 21:44:17.119142 -- micro)
-ok 12 - Bug test 11 (6: 2025/05/06 21:44:17.299    -- milli)
-ok 13 - Bug test 12 (6: 2025/05/06 21:44:17.299377 -- micro)
-ok 14 - Bug test 13 (7: 2025/05/06 21:44:17.479    -- milli)
-ok 15 - Bug test 14 (7: 2025/05/06 21:44:17.479563 -- micro)
-ok 16 - Bug test 15 (8: 2025/05/06 21:44:17.659    -- milli)
-ok 17 - Bug test 16 (8: 2025/05/06 21:44:17.659774 -- micro)
-ok 18 - Bug test 17 (9: 2025/05/06 21:44:17.839    -- milli)
-ok 19 - Bug test 18 (9: 2025/05/06 21:44:17.839998 -- micro)
-ok 20 - Bug test 19 (10: 2025/05/06 21:44:18.020    -- milli)
-ok 21 - Bug test 20 (10: 2025/05/06 21:44:18.020523 -- micro)
-ok 22 - Bug test 21 (11: 2025/05/06 21:44:18.200    -- milli)
-ok 23 - Bug test 22 (11: 2025/05/06 21:44:18.200762 -- micro)
-ok 24 - Bug test 23 (12: 2025/05/06 21:44:18.380    -- milli)
-ok 25 - Bug test 24 (12: 2025/05/06 21:44:18.381026 -- micro)
-ok 26 - Bug test 25 (13: 2025/05/06 21:44:18.561    -- milli)
-ok 27 - Bug test 26 (13: 2025/05/06 21:44:18.561259 -- micro)
-ok 28 - Bug test 27 (14: 2025/05/06 21:44:18.741    -- milli)
-ok 29 - Bug test 28 (14: 2025/05/06 21:44:18.741496 -- micro)
-ok 30 - Bug test 29 (15: 2025/05/06 21:44:18.921    -- milli)
-ok 31 - Bug test 30 (15: 2025/05/06 21:44:18.921858 -- micro)
-ok 32 - Bug test 31 (16: 2025/05/06 21:44:19.102    -- milli)
-ok 33 - Bug test 32 (16: 2025/05/06 21:44:19.102195 -- micro)
-ok 34 - Bug test 33 (17: 2025/05/06 21:44:19.282    -- milli)
-ok 35 - Bug test 34 (17: 2025/05/06 21:44:19.282426 -- micro)
-ok 36 - Bug test 35 (18: 2025/05/06 21:44:19.462    -- milli)
-ok 37 - Bug test 36 (18: 2025/05/06 21:44:19.462658 -- micro)
-ok 38 - Bug test 37 (19: 2025/05/06 21:44:19.642    -- milli)
-ok 39 - Bug test 38 (19: 2025/05/06 21:44:19.642884 -- micro)
-ok 40 - Bug test 39 (20: 2025/05/06 21:44:19.823    -- milli)
-ok 41 - Bug test 40 (20: 2025/05/06 21:44:19.823273 -- micro)
+ok 2 - Bug test 1 (1: 2024/04/03 15:22:14.093    -- milli)
+ok 3 - Bug test 2 (1: 2024/04/03 15:22:14.095706 -- micro)
+ok 4 - Bug test 3 (2: 2024/04/03 15:22:14.279    -- milli)
+ok 5 - Bug test 4 (2: 2024/04/03 15:22:14.279450 -- micro)
+ok 6 - Bug test 5 (3: 2024/04/03 15:22:14.460    -- milli)
+ok 7 - Bug test 6 (3: 2024/04/03 15:22:14.460689 -- micro)
+ok 8 - Bug test 7 (4: 2024/04/03 15:22:14.641    -- milli)
+ok 9 - Bug test 8 (4: 2024/04/03 15:22:14.641421 -- micro)
+ok 10 - Bug test 9 (5: 2024/04/03 15:22:14.821    -- milli)
+ok 11 - Bug test 10 (5: 2024/04/03 15:22:14.822012 -- micro)
+ok 12 - Bug test 11 (6: 2024/04/03 15:22:15.003    -- milli)
+ok 13 - Bug test 12 (6: 2024/04/03 15:22:15.003412 -- micro)
+ok 14 - Bug test 13 (7: 2024/04/03 15:22:15.187    -- milli)
+ok 15 - Bug test 14 (7: 2024/04/03 15:22:15.187345 -- micro)
+ok 16 - Bug test 15 (8: 2024/04/03 15:22:15.369    -- milli)
+ok 17 - Bug test 16 (8: 2024/04/03 15:22:15.369452 -- micro)
+ok 18 - Bug test 17 (9: 2024/04/03 15:22:15.549    -- milli)
+ok 19 - Bug test 18 (9: 2024/04/03 15:22:15.549935 -- micro)
+ok 20 - Bug test 19 (10: 2024/04/03 15:22:15.731    -- milli)
+ok 21 - Bug test 20 (10: 2024/04/03 15:22:15.731314 -- micro)
+ok 22 - Bug test 21 (11: 2024/04/03 15:22:15.914    -- milli)
+ok 23 - Bug test 22 (11: 2024/04/03 15:22:15.915122 -- micro)
+ok 24 - Bug test 23 (12: 2024/04/03 15:22:16.095    -- milli)
+ok 25 - Bug test 24 (12: 2024/04/03 15:22:16.095833 -- micro)
+ok 26 - Bug test 25 (13: 2024/04/03 15:22:16.277    -- milli)
+ok 27 - Bug test 26 (13: 2024/04/03 15:22:16.277561 -- micro)
+ok 28 - Bug test 27 (14: 2024/04/03 15:22:16.457    -- milli)
+ok 29 - Bug test 28 (14: 2024/04/03 15:22:16.458053 -- micro)
+ok 30 - Bug test 29 (15: 2024/04/03 15:22:16.638    -- milli)
+ok 31 - Bug test 30 (15: 2024/04/03 15:22:16.638672 -- micro)
+ok 32 - Bug test 31 (16: 2024/04/03 15:22:16.818    -- milli)
+ok 33 - Bug test 32 (16: 2024/04/03 15:22:16.819223 -- micro)
+ok 34 - Bug test 33 (17: 2024/04/03 15:22:17.000    -- milli)
+ok 35 - Bug test 34 (17: 2024/04/03 15:22:17.000370 -- micro)
+ok 36 - Bug test 35 (18: 2024/04/03 15:22:17.183    -- milli)
+ok 37 - Bug test 36 (18: 2024/04/03 15:22:17.183455 -- micro)
+ok 38 - Bug test 37 (19: 2024/04/03 15:22:17.363    -- milli)
+ok 39 - Bug test 38 (19: 2024/04/03 15:22:17.363970 -- micro)
+ok 40 - Bug test 39 (20: 2024/04/03 15:22:17.544    -- milli)
+ok 41 - Bug test 40 (20: 2024/04/03 15:22:17.544656 -- micro)
 ok
 t/past.t ......... 
 1..4
@@ -1161,7 +1197,7 @@
 ok 102 - m test: Hour12: (cur)
 ok
 All tests successful.
-Files=26, Tests=533,  7 wallclock secs ( 0.10 usr  0.02 sys +  2.94 cusr  0.30 csys =  3.36 CPU)
+Files=26, Tests=533, 11 wallclock secs ( 0.20 usr  0.04 sys +  6.96 cusr  0.66 csys =  7.86 CPU)
 Result: PASS
 make[1]: Leaving directory '/build/reproducible-path/libtime-format-perl-1.16'
    create-stamp debian/debhelper-build-stamp
@@ -1192,12 +1228,14 @@
 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/41219/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/41219/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/14381 and its subdirectories
-I: Current time: Tue May  6 09:44:23 -12 2025
-I: pbuilder-time-stamp: 1746567863
+I: removing directory /srv/workspace/pbuilder/41219 and its subdirectories
+I: Current time: Thu Apr  4 05:22:27 +14 2024
+I: pbuilder-time-stamp: 1712157747