Diff of the two buildlogs:

--
--- b1/build.log	2025-01-28 22:05:51.123724775 +0000
+++ b2/build.log	2025-01-28 22:06:23.898253721 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Mar  2 16:28:18 -12 2026
-I: pbuilder-time-stamp: 1772512098
+I: Current time: Wed Jan 29 12:05:54 +14 2025
+I: pbuilder-time-stamp: 1738101954
 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 libmatch-simple-xs-perl_0.002-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/250663/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/285845/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 Jan 28 22:06 /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/285845/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/285845/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='320404cc0ba949a1943153abc458d8fc'
-  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='250663'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=ab4880aec5654eed9949330206338e13
+  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=285845
   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.BUogMbUb/pbuilderrc_GSZU --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.BUogMbUb/b1 --logfile b1/build.log libmatch-simple-xs-perl_0.002-1.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.BUogMbUb/pbuilderrc_buej --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.BUogMbUb/b2 --logfile b2/build.log libmatch-simple-xs-perl_0.002-1.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 6.1.0-30-cloud-arm64 #1 SMP Debian 6.1.124-1 (2025-01-12) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-30-cloud-arm64 #1 SMP Debian 6.1.124-1 (2025-01-12) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/250663/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/285845/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -151,7 +183,7 @@
 Get: 35 http://deb.debian.org/debian trixie/main arm64 libsub-infix-perl all 0.004-4 [11.8 kB]
 Get: 36 http://deb.debian.org/debian trixie/main arm64 libtry-tiny-perl all 0.32-1 [22.9 kB]
 Get: 37 http://deb.debian.org/debian trixie/main arm64 libtest-fatal-perl all 0.017-1 [13.2 kB]
-Fetched 21.3 MB in 0s (112 MB/s)
+Fetched 21.3 MB in 0s (147 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 ... 19969 files and directories currently installed.)
@@ -314,7 +346,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/libmatch-simple-xs-perl-0.002/ && 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  > ../libmatch-simple-xs-perl_0.002-1_source.changes
+I: user script /srv/workspace/pbuilder/285845/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/285845/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libmatch-simple-xs-perl-0.002/ && 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  > ../libmatch-simple-xs-perl_0.002-1_source.changes
 dpkg-buildpackage: info: source package libmatch-simple-xs-perl
 dpkg-buildpackage: info: source version 0.002-1
 dpkg-buildpackage: info: source distribution unstable
@@ -340,9 +376,9 @@
 make[1]: Entering directory '/build/reproducible-path/libmatch-simple-xs-perl-0.002'
 Running Mkbootstrap for XS ()
 "/usr/bin/perl" "/usr/share/perl/5.40/ExtUtils/xsubpp"  -typemap '/usr/share/perl/5.40/ExtUtils/typemap'  XS.xs > XS.xsc
-cp lib/match/simple/XS.pm blib/lib/match/simple/XS.pm
 chmod 644 "XS.bs"
 "/usr/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- XS.bs blib/arch/auto/match/simple/XS/XS.bs 644
+cp lib/match/simple/XS.pm blib/lib/match/simple/XS.pm
 Please specify prototyping behavior for XS.xs (see perlxs manual)
 mv XS.xsc XS.c
 aarch64-linux-gnu-gcc -c  -I. -D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fwrapv -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/libmatch-simple-xs-perl-0.002=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2   -DVERSION=\"0.002\" -DXS_VERSION=\"0.002\" -fPIC "-I/usr/lib/aarch64-linux-gnu/perl/5.40/CORE"   XS.c
@@ -368,38 +404,38 @@
 ok 3 - "1" NOT matches undef
 ok 4 - "" NOT matches undef
 ok 5 - "XXX" NOT matches undef
-ok 6 - ARRAY(0xaaaad2a9d030) NOT matches undef
-ok 7 - HASH(0xaaaad3247ea8) NOT matches undef
-ok 8 - CODE(0xaaaad3242788) NOT matches undef
-ok 9 - Local::SomeClass=ARRAY(0xaaaad2a72998) NOT matches undef
+ok 6 - ARRAY(0xaaaafcefd020) NOT matches undef
+ok 7 - HASH(0xaaaafd6a5b48) NOT matches undef
+ok 8 - CODE(0xaaaafd6a0788) NOT matches undef
+ok 9 - Local::SomeClass=ARRAY(0xaaaafced2998) NOT matches undef
 ok 10 - "xxx" matches "xxx"
 ok 11 - "0" NOT matches "xxx"
 ok 12 - "1" NOT matches "xxx"
 ok 13 - "" NOT matches "xxx"
 ok 14 - "XXX" NOT matches "xxx"
-ok 15 - ARRAY(0xaaaad3248268) NOT matches "xxx"
-ok 16 - HASH(0xaaaad2aab898) NOT matches "xxx"
-ok 17 - CODE(0xaaaad3247800) NOT matches "xxx"
-ok 18 - Local::SomeClass=ARRAY(0xaaaad2a72998) NOT matches "xxx"
+ok 15 - ARRAY(0xaaaafcefd470) NOT matches "xxx"
+ok 16 - HASH(0xaaaafcf0b4b0) NOT matches "xxx"
+ok 17 - CODE(0xaaaafd6a5890) NOT matches "xxx"
+ok 18 - Local::SomeClass=ARRAY(0xaaaafced2998) NOT matches "xxx"
 ok 19 - q(xxx) |M| qr(xxx)
 ok 20 - q(wwwxxxyyyzzz) |M| qr(xxx)
-ok 21 - "0" NOT matches Regexp=REGEXP(0xaaaad2aaba78)
-ok 22 - "1" NOT matches Regexp=REGEXP(0xaaaad2aabb68)
-ok 23 - "" NOT matches Regexp=REGEXP(0xaaaad2aabc58)
-ok 24 - "XXX" NOT matches Regexp=REGEXP(0xaaaad2aac258)
-ok 25 - ARRAY(0xaaaad2aab868) NOT matches Regexp=REGEXP(0xaaaad2aac288)
-ok 26 - HASH(0xaaaad2a9ce50) NOT matches Regexp=REGEXP(0xaaaad2aabef8)
-ok 27 - CODE(0xaaaad3247a10) NOT matches Regexp=REGEXP(0xaaaad2aabf40)
-ok 28 - Local::SomeClass=ARRAY(0xaaaad2a72998) NOT matches Regexp=REGEXP(0xaaaad2aab8f8)
-ok 29 - Regexp=REGEXP(0xaaaad2aabe20) NOT matches "xxx"
-ok 30 - "1" matches CODE(0xaaaad3247ad0)
-ok 31 - "0" NOT matches CODE(0xaaaad3247b30)
-ok 32 - "1" matches CODE(0xaaaad3247b90)
-ok 33 - "0" NOT matches CODE(0xaaaad3247bf0)
-ok 34 - "1" matches CODE(0xaaaad3247c50)
-ok 35 - "0" matches CODE(0xaaaad3247cc8)
-ok 36 - "1" matches Local::SomeOtherClass=ARRAY(0xaaaad2aab868)
-ok 37 - "0" NOT matches Local::SomeOtherClass=ARRAY(0xaaaad2aab868)
+ok 21 - "0" NOT matches Regexp=REGEXP(0xaaaafcf0bae0)
+ok 22 - "1" NOT matches Regexp=REGEXP(0xaaaafcf0b798)
+ok 23 - "" NOT matches Regexp=REGEXP(0xaaaafcf0bd08)
+ok 24 - "XXX" NOT matches Regexp=REGEXP(0xaaaafcf0be70)
+ok 25 - ARRAY(0xaaaafd6a5b48) NOT matches Regexp=REGEXP(0xaaaafcf0bfd8)
+ok 26 - HASH(0xaaaafd6a6400) NOT matches Regexp=REGEXP(0xaaaafcf0b738)
+ok 27 - CODE(0xaaaafd6a5aa0) NOT matches Regexp=REGEXP(0xaaaafcf0b918)
+ok 28 - Local::SomeClass=ARRAY(0xaaaafced2998) NOT matches Regexp=REGEXP(0xaaaafcf0c1e8)
+ok 29 - Regexp=REGEXP(0xaaaafcf0b8d0) NOT matches "xxx"
+ok 30 - "1" matches CODE(0xaaaafd6a5b60)
+ok 31 - "0" NOT matches CODE(0xaaaafd6a5bc0)
+ok 32 - "1" matches CODE(0xaaaafd6a5c20)
+ok 33 - "0" NOT matches CODE(0xaaaafd6a5c80)
+ok 34 - "1" matches CODE(0xaaaafd6a5ce0)
+ok 35 - "0" matches CODE(0xaaaafd6a5d58)
+ok 36 - "1" matches Local::SomeOtherClass=ARRAY(0xaaaafd6a5b48)
+ok 37 - "0" NOT matches Local::SomeOtherClass=ARRAY(0xaaaafd6a5b48)
 ok 38 - q(x) |M| [qw(x y z)]
 ok 39 - Matching against a regexp throws an exception.
 ok 40 - Matching against a filehandle throws an exception.
@@ -509,7 +545,7 @@
 1..100
 ok
 All tests successful.
-Files=3, Tests=141,  1 wallclock secs ( 0.01 usr  0.00 sys +  0.18 cusr  0.01 csys =  0.20 CPU)
+Files=3, Tests=141,  0 wallclock secs ( 0.03 usr  0.01 sys +  0.26 cusr  0.05 csys =  0.35 CPU)
 Result: PASS
 make[1]: Leaving directory '/build/reproducible-path/libmatch-simple-xs-perl-0.002'
    create-stamp debian/debhelper-build-stamp
@@ -545,8 +581,8 @@
    dh_gencontrol
    dh_md5sums
    dh_builddeb
-dpkg-deb: building package 'libmatch-simple-xs-perl-dbgsym' in '../libmatch-simple-xs-perl-dbgsym_0.002-1_arm64.deb'.
 dpkg-deb: building package 'libmatch-simple-xs-perl' in '../libmatch-simple-xs-perl_0.002-1_arm64.deb'.
+dpkg-deb: building package 'libmatch-simple-xs-perl-dbgsym' in '../libmatch-simple-xs-perl-dbgsym_0.002-1_arm64.deb'.
  dpkg-genbuildinfo --build=binary -O../libmatch-simple-xs-perl_0.002-1_arm64.buildinfo
  dpkg-genchanges --build=binary -O../libmatch-simple-xs-perl_0.002-1_arm64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -554,12 +590,14 @@
 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/285845/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/285845/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/250663 and its subdirectories
-I: Current time: Mon Mar  2 16:28:49 -12 2026
-I: pbuilder-time-stamp: 1772512129
+I: removing directory /srv/workspace/pbuilder/285845 and its subdirectories
+I: Current time: Wed Jan 29 12:06:22 +14 2025
+I: pbuilder-time-stamp: 1738101982