Diff of the two buildlogs:

--
--- b1/build.log	2024-11-30 12:27:50.831931017 +0000
+++ b2/build.log	2024-11-30 12:28:59.816814599 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Fri Jan  2 06:44:43 -12 2026
-I: pbuilder-time-stamp: 1767379483
+I: Current time: Sun Dec  1 02:27:53 +14 2024
+I: pbuilder-time-stamp: 1732969673
 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 libmath-bigint-perl_2.003003-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/92541/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/43499/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos2-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 Nov 30 12:28 /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/43499/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/43499/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]="32" [3]="1" [4]="release" [5]="i686-pc-linux-gnu")
+  BASH_VERSION='5.2.32(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='0d406549d682476a83a267c043a07ee8'
-  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='92541'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=68f8b715cd6e456f92cda7733871a45e
+  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=43499
   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.zRvDZPnq/pbuilderrc_osWM --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.zRvDZPnq/b1 --logfile b1/build.log libmath-bigint-perl_2.003003-1.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://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.zRvDZPnq/pbuilderrc_Qse8 --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.zRvDZPnq/b2 --logfile b2/build.log libmath-bigint-perl_2.003003-1.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://46.16.76.132:3128
 I: uname -a
-  Linux ionos16-i386 6.1.0-28-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-28-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Aug  4  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/92541/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/43499/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -138,7 +170,7 @@
 Get: 27 http://deb.debian.org/debian trixie/main i386 intltool-debian all 0.35.0+20060710.6 [22.9 kB]
 Get: 28 http://deb.debian.org/debian trixie/main i386 po-debconf all 1.0.21+nmu1 [248 kB]
 Get: 29 http://deb.debian.org/debian trixie/main i386 debhelper all 13.20 [915 kB]
-Fetched 20.1 MB in 7s (2966 kB/s)
+Fetched 20.1 MB in 0s (68.0 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 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 ... 19950 files and directories currently installed.)
@@ -269,7 +301,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/libmath-bigint-perl-2.003003/ && 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  > ../libmath-bigint-perl_2.003003-1_source.changes
+I: user script /srv/workspace/pbuilder/43499/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/43499/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libmath-bigint-perl-2.003003/ && 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  > ../libmath-bigint-perl_2.003003-1_source.changes
 dpkg-buildpackage: info: source package libmath-bigint-perl
 dpkg-buildpackage: info: source version 2.003003-1
 dpkg-buildpackage: info: source distribution unstable
@@ -291,17 +327,17 @@
 Writing Makefile for Math::BigInt
 Writing MYMETA.yml and MYMETA.json
    dh_auto_build
-	make -j22
+	make -j10
 make[1]: Entering directory '/build/reproducible-path/libmath-bigint-perl-2.003003'
+cp lib/Math/BigRat.pm blib/lib/Math/BigRat.pm
 cp lib/Math/BigInt/Calc.pm blib/lib/Math/BigInt/Calc.pm
-cp lib/Math/BigInt/Lib.pm blib/lib/Math/BigInt/Lib.pm
 cp lib/Math/BigFloat.pm blib/lib/Math/BigFloat.pm
 cp lib/Math/BigInt.pm blib/lib/Math/BigInt.pm
-cp lib/Math/BigRat.pm blib/lib/Math/BigRat.pm
+cp lib/Math/BigInt/Lib.pm blib/lib/Math/BigInt/Lib.pm
 Manifying 5 pod documents
 make[1]: Leaving directory '/build/reproducible-path/libmath-bigint-perl-2.003003'
    dh_auto_test
-	make -j22 test TEST_VERBOSE=1
+	make -j10 test TEST_VERBOSE=1
 make[1]: Entering directory '/build/reproducible-path/libmath-bigint-perl-2.003003'
 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
 t/00sig.t ..................... skipped: Set the environment variable TEST_SIGNATURE to enable this test.
@@ -18269,8 +18305,8 @@
 ok 10 - Math::BigInt::Scalar->_str(Math::BigInt::Scalar->_add($x, $z)
 ok 11 - Math::BigInt::Scalar->_str($re)
 ok 12 - Math::BigInt::Scalar->_str($rr)
-ok 13 - Math::BigInt::Scalar->_is_zero(SCALAR(0x579e9288))
-ok 14 - Math::BigInt::Scalar->_is_one(SCALAR(0x579e9288))
+ok 13 - Math::BigInt::Scalar->_is_zero(SCALAR(0x571d3a08))
+ok 14 - Math::BigInt::Scalar->_is_one(SCALAR(0x571d3a08))
 ok 15 - Math::BigInt::Scalar->_is_one(Math::BigInt::Scalar->_one())
 ok 16 - Math::BigInt::Scalar->_is_one(Math::BigInt::Scalar->_zero())
 ok 17 - Math::BigInt::Scalar->_is_zero(Math::BigInt::Scalar->_zero())
@@ -18299,12 +18335,12 @@
 ok 40 - $x
 ok 41 - ref($x) || ""
 ok 42 - $x
-ok 43 - Math::BigInt::Scalar->_str(Math::BigInt::Scalar->_or(SCALAR(0x579e9440), SCALAR(0x57a12334)))
-ok 44 - Math::BigInt::Scalar->_str(Math::BigInt::Scalar->_xor(SCALAR(0x575bda14), SCALAR(0x575bd7a8)))
-ok 45 - Math::BigInt::Scalar->_str(Math::BigInt::Scalar->_and(SCALAR(0x579e9440), SCALAR(0x57a12334)))
-ok 46 - Math::BigInt::Scalar->_str(Math::BigInt::Scalar->_pow(SCALAR(0x575bda14), SCALAR(0x575bd7a8)))
-ok 47 - Math::BigInt::Scalar->_str(Math::BigInt::Scalar->_pow(SCALAR(0x579e9440), SCALAR(0x57a12334)))
-ok 48 - Math::BigInt::Scalar->_str(Math::BigInt::Scalar->_pow(SCALAR(0x575bda14), SCALAR(0x575bd7a8)))
+ok 43 - Math::BigInt::Scalar->_str(Math::BigInt::Scalar->_or(SCALAR(0x56da82f4), SCALAR(0x571fcdf4)))
+ok 44 - Math::BigInt::Scalar->_str(Math::BigInt::Scalar->_xor(SCALAR(0x571fced0), SCALAR(0x56da8880)))
+ok 45 - Math::BigInt::Scalar->_str(Math::BigInt::Scalar->_and(SCALAR(0x56da82f4), SCALAR(0x571fcdf4)))
+ok 46 - Math::BigInt::Scalar->_str(Math::BigInt::Scalar->_pow(SCALAR(0x571fced0), SCALAR(0x56da8880)))
+ok 47 - Math::BigInt::Scalar->_str(Math::BigInt::Scalar->_pow(SCALAR(0x56da82f4), SCALAR(0x571fcdf4)))
+ok 48 - Math::BigInt::Scalar->_str(Math::BigInt::Scalar->_pow(SCALAR(0x571fced0), SCALAR(0x56da8880)))
 ok 49 - Math::BigInt::Scalar->_check($x)
 ok 50 - Math::BigInt::Scalar->_check(123)
 ok
@@ -33099,10 +33135,10 @@
 ok 266 - AdivB * B / B == AdivB
 ok 267 - AdivB * A + 2 * AmodB - AmodB == B
 ok 268 - AdivB * A / A == AdivB
-ok 269 # skip $A and/or $B are zero.
-ok 270 # skip $A and/or $B are zero.
-ok 271 # skip $A and/or $B are zero.
-ok 272 # skip $A and/or $B are zero.
+ok 269 - AdivB * B + 2 * AmodB - AmodB == A
+ok 270 - AdivB * B / B == AdivB
+ok 271 - AdivB * A + 2 * AmodB - AmodB == B
+ok 272 - AdivB * A / A == AdivB
 ok 273 - AdivB * B + 2 * AmodB - AmodB == A
 ok 274 - AdivB * B / B == AdivB
 ok 275 - AdivB * A + 2 * AmodB - AmodB == B
@@ -33327,10 +33363,10 @@
 ok 494 - AdivB * B / B == AdivB
 ok 495 - AdivB * A + 2 * AmodB - AmodB == B
 ok 496 - AdivB * A / A == AdivB
-ok 497 # skip $A and/or $B are zero.
-ok 498 # skip $A and/or $B are zero.
-ok 499 # skip $A and/or $B are zero.
-ok 500 # skip $A and/or $B are zero.
+ok 497 - AdivB * B + 2 * AmodB - AmodB == A
+ok 498 - AdivB * B / B == AdivB
+ok 499 - AdivB * A + 2 * AmodB - AmodB == B
+ok 500 - AdivB * A / A == AdivB
 ok 501 - AdivB * B + 2 * AmodB - AmodB == A
 ok 502 - AdivB * B / B == AdivB
 ok 503 - AdivB * A + 2 * AmodB - AmodB == B
@@ -48736,25 +48772,25 @@
 ok 3071 - $x = Math::BigFloat->new("2"); $y = Math::BigFloat->new("18.2"); $x <<= $y; $x >>= $y; $x
 ok
 All tests successful.
-Files=54, Tests=39131, 141 wallclock secs ( 4.48 usr  0.80 sys + 28.30 cusr  6.42 csys = 40.00 CPU)
+Files=54, Tests=39131, 36 wallclock secs ( 4.20 usr  0.48 sys + 34.48 cusr  1.36 csys = 40.52 CPU)
 Result: PASS
 make[1]: Leaving directory '/build/reproducible-path/libmath-bigint-perl-2.003003'
    create-stamp debian/debhelper-build-stamp
    dh_prep
    dh_auto_install --destdir=debian/libmath-bigint-perl/
-	make -j22 install DESTDIR=/build/reproducible-path/libmath-bigint-perl-2.003003/debian/libmath-bigint-perl AM_UPDATE_INFO_DIR=no PREFIX=/usr
+	make -j10 install DESTDIR=/build/reproducible-path/libmath-bigint-perl-2.003003/debian/libmath-bigint-perl AM_UPDATE_INFO_DIR=no PREFIX=/usr
 make[1]: Entering directory '/build/reproducible-path/libmath-bigint-perl-2.003003'
 Manifying 5 pod documents
 Installing /build/reproducible-path/libmath-bigint-perl-2.003003/debian/libmath-bigint-perl/usr/share/perl5/Math/BigRat.pm
 Installing /build/reproducible-path/libmath-bigint-perl-2.003003/debian/libmath-bigint-perl/usr/share/perl5/Math/BigFloat.pm
 Installing /build/reproducible-path/libmath-bigint-perl-2.003003/debian/libmath-bigint-perl/usr/share/perl5/Math/BigInt.pm
-Installing /build/reproducible-path/libmath-bigint-perl-2.003003/debian/libmath-bigint-perl/usr/share/perl5/Math/BigInt/Lib.pm
 Installing /build/reproducible-path/libmath-bigint-perl-2.003003/debian/libmath-bigint-perl/usr/share/perl5/Math/BigInt/Calc.pm
-Installing /build/reproducible-path/libmath-bigint-perl-2.003003/debian/libmath-bigint-perl/usr/share/man/man3/Math::BigRat.3pm
-Installing /build/reproducible-path/libmath-bigint-perl-2.003003/debian/libmath-bigint-perl/usr/share/man/man3/Math::BigInt::Calc.3pm
+Installing /build/reproducible-path/libmath-bigint-perl-2.003003/debian/libmath-bigint-perl/usr/share/perl5/Math/BigInt/Lib.pm
 Installing /build/reproducible-path/libmath-bigint-perl-2.003003/debian/libmath-bigint-perl/usr/share/man/man3/Math::BigFloat.3pm
+Installing /build/reproducible-path/libmath-bigint-perl-2.003003/debian/libmath-bigint-perl/usr/share/man/man3/Math::BigRat.3pm
 Installing /build/reproducible-path/libmath-bigint-perl-2.003003/debian/libmath-bigint-perl/usr/share/man/man3/Math::BigInt.3pm
 Installing /build/reproducible-path/libmath-bigint-perl-2.003003/debian/libmath-bigint-perl/usr/share/man/man3/Math::BigInt::Lib.3pm
+Installing /build/reproducible-path/libmath-bigint-perl-2.003003/debian/libmath-bigint-perl/usr/share/man/man3/Math::BigInt::Calc.3pm
 make[1]: Leaving directory '/build/reproducible-path/libmath-bigint-perl-2.003003'
    dh_installdocs
    dh_installchangelogs
@@ -48778,12 +48814,14 @@
 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/43499/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/43499/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/92541 and its subdirectories
-I: Current time: Fri Jan  2 06:50:41 -12 2026
-I: pbuilder-time-stamp: 1767379841
+I: removing directory /srv/workspace/pbuilder/43499 and its subdirectories
+I: Current time: Sun Dec  1 02:28:59 +14 2024
+I: pbuilder-time-stamp: 1732969739