Diff of the two buildlogs:

--
--- b1/build.log	2025-01-13 06:36:46.916870486 +0000
+++ b2/build.log	2025-01-13 06:37:20.799325833 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Jan 12 18:36:23 -12 2025
-I: pbuilder-time-stamp: 1736750183
+I: Current time: Mon Feb 16 02:59:49 +14 2026
+I: pbuilder-time-stamp: 1771160389
 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 libtest-file-perl_1.994-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/4022929/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/2186051/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 Feb 15 12:59 /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/2186051/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/2186051/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='a70656b6806a401c84561fbb72cae93e'
-  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='4022929'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=01a41f4b30204040b7f27b16faf263e5
+  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=2186051
   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.SETB6TxM/pbuilderrc_NmIr --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.SETB6TxM/b1 --logfile b1/build.log libtest-file-perl_1.994-1.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.SETB6TxM/pbuilderrc_mHeG --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.SETB6TxM/b2 --logfile b2/build.log libtest-file-perl_1.994-1.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 codethink04-arm64 6.1.0-29-cloud-arm64 #1 SMP Debian 6.1.123-1 (2025-01-02) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-29-cloud-arm64 #1 SMP Debian 6.1.123-1 (2025-01-02) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/4022929/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/2186051/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -145,7 +177,7 @@
 Get: 34 http://deb.debian.org/debian trixie/main arm64 libtest-manifest-perl all 2.025-1 [15.8 kB]
 Get: 35 http://deb.debian.org/debian trixie/main arm64 libtest-pod-coverage-perl all 1.10-3 [14.9 kB]
 Get: 36 http://deb.debian.org/debian trixie/main arm64 libtest-pod-perl all 1.52-3 [12.6 kB]
-Fetched 20.1 MB in 0s (112 MB/s)
+Fetched 20.1 MB in 0s (58.0 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 ... 19968 files and directories currently installed.)
@@ -306,7 +338,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/libtest-file-perl-1.994/ && 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  > ../libtest-file-perl_1.994-1_source.changes
+I: user script /srv/workspace/pbuilder/2186051/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/2186051/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libtest-file-perl-1.994/ && 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  > ../libtest-file-perl_1.994-1_source.changes
 dpkg-buildpackage: info: source package libtest-file-perl
 dpkg-buildpackage: info: source version 1.994-1
 dpkg-buildpackage: info: source distribution unstable
@@ -391,7 +427,7 @@
 ok
     # MSWin32
 t/dm_skeleton.t ............... 
-Temp dir in </tmp/cqtswY_hEg>
+Temp dir in </tmp/eWt4Xf_b9s>
 ok 1
 ok 2
 ok 3
@@ -481,7 +517,7 @@
 ok
 # Warnings about file_writeable_ok are fine. It's a deprecated name that still works.
 t/test_files.t ................ 
-Temp dir in </tmp/2S2nj0lMQL>
+Temp dir in </tmp/ynOiShqxMY>
 ok 1
 ok 2
 ok 3
@@ -567,7 +603,7 @@
 1..24
 ok
 t/test_dirs.t ................. 
-Temp dir in </tmp/ZlcE7VCq4V>
+Temp dir in </tmp/TdpAYPk2NU>
 ok 1
 ok 2
 ok 3
@@ -582,7 +618,7 @@
 1..11
 ok
 t/links.t ..................... 
-Temp dir in </tmp/vHpxu5RPv4>
+Temp dir in </tmp/0DVZmLBTuE>
 ok 1
 ok 2
 ok 3
@@ -642,7 +678,7 @@
 ok
 t/link_counts.t ............... 
 ok 1 - use Test::File;
-Temp dir in </tmp/ulgSyeazlM>
+Temp dir in </tmp/d0DCIYIZL2>
 ok 2
 ok 3
 ok 4
@@ -668,7 +704,7 @@
 1..9
 ok
 t/line_counters.t ............. 
-Temp dir in </tmp/yyBqlTF7TW>
+Temp dir in </tmp/ogG0CKemWC>
 ok 1
 ok 2
 ok 3
@@ -716,7 +752,7 @@
 1..12
 ok
 t/file_sizes.t ................ 
-Temp dir in </tmp/JAajDN7N1r>
+Temp dir in </tmp/0lfKQPyRYv>
 ok 1
 ok 2
 ok 3
@@ -754,7 +790,7 @@
 1..10
 ok
 t/file_contains.t ............. 
-Temp dir in </tmp/StGoncUNs9>
+Temp dir in </tmp/hxJc9Jg_qk>
 ok 1
 ok 2
 ok 3
@@ -781,7 +817,7 @@
 1..23
 ok
 t/file_contains_encoded.t ..... 
-Temp dir in </tmp/aiwy4CRP72>
+Temp dir in </tmp/0NGZ6USK0_>
 ok 1
 ok 2
 ok 3
@@ -800,7 +836,7 @@
 1..15
 ok
 t/file_contains_utf8.t ........ 
-Temp dir in </tmp/Ha1DkYe8st>
+Temp dir in </tmp/Am6ubE3l3e>
 ok 1
 ok 2
 ok 3
@@ -819,7 +855,7 @@
 1..15
 ok
 t/file_mtime.t ................ 
-Temp dir in </tmp/yQEckg6LJH>
+Temp dir in </tmp/Jq3iT5gF2L>
 ok 1
 ok 2
 ok 3
@@ -864,7 +900,7 @@
 ok 7 - owner_isnt for non-existent name
 ok 8 - Intentional owner_isnt failure
 ok 9 - group_is with text groupname
-ok 10 - blib belongs to group pbuilder1
+ok 10 - blib belongs to group pbuilder2
 ok 11 - group_is with numeric GID
 ok 12 - group_isnt with text groupname
 ok 13 - group_isnt with numeric GID
@@ -877,14 +913,14 @@
     # File is min_file with size 53 bytes
 t/rt/30346.t .................. 
 ok 1 - use Test::File;
-Temp dir in </tmp/zB90oT5CQc>
+Temp dir in </tmp/lgBYHTzhdW>
 ok 2
 ok 3
 ok 4
 ok 5
 ok 6
 # Subtest: file_does_not_exist
-    ok 1 - no_such_file-40335081736750202b11111111m is not empty
+    ok 1 - no_such_file-21896081771160416b22222222m is not empty
     1..1
 ok 7 - file_does_not_exist
 # Subtest: file_exists_non_zero
@@ -898,7 +934,7 @@
 1..9
 ok
 All tests successful.
-Files=19, Tests=199,  2 wallclock secs ( 0.14 usr  0.04 sys +  1.99 cusr  0.38 csys =  2.55 CPU)
+Files=19, Tests=199,  2 wallclock secs ( 0.07 usr  0.03 sys +  1.30 cusr  0.23 csys =  1.63 CPU)
 Result: PASS
 make[1]: Leaving directory '/build/reproducible-path/libtest-file-perl-1.994'
    create-stamp debian/debhelper-build-stamp
@@ -931,12 +967,14 @@
 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/2186051/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/2186051/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/4022929 and its subdirectories
-I: Current time: Sun Jan 12 18:36:45 -12 2025
-I: pbuilder-time-stamp: 1736750205
+I: removing directory /srv/workspace/pbuilder/2186051 and its subdirectories
+I: Current time: Mon Feb 16 03:00:19 +14 2026
+I: pbuilder-time-stamp: 1771160419