Diff of the two buildlogs:

--
--- b1/build.log	2024-05-16 09:45:01.119368473 +0000
+++ b2/build.log	2024-05-16 09:46:42.123074013 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Jun 18 04:06:56 -12 2025
-I: pbuilder-time-stamp: 1750262816
+I: Current time: Thu May 16 23:45:03 +14 2024
+I: pbuilder-time-stamp: 1715852703
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -30,52 +30,84 @@
 dpkg-source: info: applying raise-connection-delay-in-tests.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/1779022/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/912426/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos1-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 May 16 09:45 /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/912426/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/912426/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='trixie'
-  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=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='c9863db73157404fbec21f536fe8a8e0'
-  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='1779022'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=5465042cfcf8494cb1d5f766deadf1d4
+  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=912426
   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.afsE2CYL/pbuilderrc_EZru --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.afsE2CYL/b1 --logfile b1/build.log dropbear_2024.85-1.dsc'
-  SUDO_GID='110'
-  SUDO_UID='105'
-  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.afsE2CYL/pbuilderrc_iLsx --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.afsE2CYL/b2 --logfile b2/build.log dropbear_2024.85-1.dsc'
+  SUDO_GID=110
+  SUDO_UID=105
+  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 ionos5-amd64 6.6.13+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.6.13-1~bpo12+1 (2024-02-15) 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 Jun 16 17:46 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/1779022/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May 14 11:24 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/912426/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -154,7 +186,7 @@
 Get: 33 http://deb.debian.org/debian trixie/main amd64 libtomcrypt-dev amd64 1.18.2+dfsg-7+b1 [1260 kB]
 Get: 34 http://deb.debian.org/debian trixie/main amd64 libtommath-dev amd64 1.2.1-2+b1 [75.9 kB]
 Get: 35 http://deb.debian.org/debian trixie/main amd64 zlib1g-dev amd64 1:1.3.dfsg-3.1 [918 kB]
-Fetched 21.8 MB in 3s (8252 kB/s)
+Fetched 21.8 MB in 0s (61.7 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 ... 19699 files and directories currently installed.)
@@ -309,7 +341,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/dropbear-2024.85/ && 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  > ../dropbear_2024.85-1_source.changes
+I: user script /srv/workspace/pbuilder/912426/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/912426/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/dropbear-2024.85/ && 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  > ../dropbear_2024.85-1_source.changes
 dpkg-buildpackage: info: source package dropbear
 dpkg-buildpackage: info: source version 2024.85-1
 dpkg-buildpackage: info: source distribution unstable
@@ -521,7 +557,7 @@
 '/build/reproducible-path/dropbear-2024.85/debian/localoptions.h' -> '/build/reproducible-path/dropbear-2024.85/localoptions.h'
 make[1]: Leaving directory '/build/reproducible-path/dropbear-2024.85'
    dh_auto_build
-	make -j42
+	make -j20
 make[1]: Entering directory '/build/reproducible-path/dropbear-2024.85'
 mkdir -p obj
 Creating default_options_guard.h
@@ -530,7 +566,7 @@
 pwd
 /build/reproducible-path/dropbear-2024.85
 ls -l default_options_guard.h
--rw-r--r-- 1 pbuilder1 pbuilder1 17743 Jun 18 16:07 default_options_guard.h
+-rw-r--r-- 1 pbuilder2 pbuilder2 17743 May 16 09:46 default_options_guard.h
 gcc -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dropbear-2024.85=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -D_FORTIFY_SOURCE=2 -fstack-protector-strong -fPIE -Wundef -fno-strict-overflow -Wno-pointer-sign -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dropbear-2024.85=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection  -Wdate-time -D_FORTIFY_SOURCE=2 -DLOCALOPTIONS_H_EXISTS -Wdate-time -D_FORTIFY_SOURCE=2 -I. -I./src -DDROPBEAR_SERVER -DDROPBEAR_CLIENT src/dbutil.c -o obj/dbutil.o -c
 gcc -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dropbear-2024.85=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -D_FORTIFY_SOURCE=2 -fstack-protector-strong -fPIE -Wundef -fno-strict-overflow -Wno-pointer-sign -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dropbear-2024.85=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection  -Wdate-time -D_FORTIFY_SOURCE=2 -DLOCALOPTIONS_H_EXISTS -Wdate-time -D_FORTIFY_SOURCE=2 -I. -I./src -DDROPBEAR_SERVER -DDROPBEAR_CLIENT src/buffer.c -o obj/buffer.o -c
 gcc -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dropbear-2024.85=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -D_FORTIFY_SOURCE=2 -fstack-protector-strong -fPIE -Wundef -fno-strict-overflow -Wno-pointer-sign -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dropbear-2024.85=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection  -Wdate-time -D_FORTIFY_SOURCE=2 -DLOCALOPTIONS_H_EXISTS -Wdate-time -D_FORTIFY_SOURCE=2 -I. -I./src -DDROPBEAR_SERVER -DDROPBEAR_CLIENT src/dbhelpers.c -o obj/dbhelpers.o -c
@@ -620,7 +656,7 @@
    dh_prep
    dh_installdirs
    dh_auto_install
-	make -j42 install DESTDIR=/build/reproducible-path/dropbear-2024.85/debian/tmp AM_UPDATE_INFO_DIR=no
+	make -j20 install DESTDIR=/build/reproducible-path/dropbear-2024.85/debian/tmp AM_UPDATE_INFO_DIR=no
 make[1]: Entering directory '/build/reproducible-path/dropbear-2024.85'
 /usr/bin/install -c -d /build/reproducible-path/dropbear-2024.85/debian/tmp/usr/sbin
 /usr/bin/install -c -d /build/reproducible-path/dropbear-2024.85/debian/tmp/usr/bin
@@ -633,11 +669,11 @@
 /usr/bin/install -c -d /build/reproducible-path/dropbear-2024.85/debian/tmp/usr/share/man/man8
 /usr/bin/install -c -d /build/reproducible-path/dropbear-2024.85/debian/tmp/usr/share/man/man1
 /usr/bin/install -c -d /build/reproducible-path/dropbear-2024.85/debian/tmp/usr/share/man/man1
-/usr/bin/install -c -m 644 ./manpages/dropbear.8 /build/reproducible-path/dropbear-2024.85/debian/tmp/usr/share/man/man8/dropbear.8
 /usr/bin/install -c -d /build/reproducible-path/dropbear-2024.85/debian/tmp/usr/share/man/man1
+/usr/bin/install -c -m 644 ./manpages/dropbear.8 /build/reproducible-path/dropbear-2024.85/debian/tmp/usr/share/man/man8/dropbear.8
 if test -e ./manpages/dropbearkey.1; then /usr/bin/install -c -m 644 ./manpages/dropbearkey.1 /build/reproducible-path/dropbear-2024.85/debian/tmp/usr/share/man/man1/dropbearkey.1; fi
-if test -e ./manpages/dbclient.1; then /usr/bin/install -c -m 644 ./manpages/dbclient.1 /build/reproducible-path/dropbear-2024.85/debian/tmp/usr/share/man/man1/dbclient.1; fi
 if test -e ./manpages/dropbearconvert.1; then /usr/bin/install -c -m 644 ./manpages/dropbearconvert.1 /build/reproducible-path/dropbear-2024.85/debian/tmp/usr/share/man/man1/dropbearconvert.1; fi
+if test -e ./manpages/dbclient.1; then /usr/bin/install -c -m 644 ./manpages/dbclient.1 /build/reproducible-path/dropbear-2024.85/debian/tmp/usr/share/man/man1/dbclient.1; fi
 make[1]: Leaving directory '/build/reproducible-path/dropbear-2024.85'
    dh_install
    dh_installdocs
@@ -662,8 +698,8 @@
    dh_builddeb
 dpkg-deb: building package 'dropbear-bin-dbgsym' in '../dropbear-bin-dbgsym_2024.85-1_amd64.deb'.
 dpkg-deb: building package 'dropbear-bin' in '../dropbear-bin_2024.85-1_amd64.deb'.
-dpkg-deb: building package 'dropbear' in '../dropbear_2024.85-1_all.deb'.
 dpkg-deb: building package 'dropbear-initramfs' in '../dropbear-initramfs_2024.85-1_all.deb'.
+dpkg-deb: building package 'dropbear' in '../dropbear_2024.85-1_all.deb'.
  dpkg-genbuildinfo --build=binary -O../dropbear_2024.85-1_amd64.buildinfo
  dpkg-genchanges --build=binary -O../dropbear_2024.85-1_amd64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -671,12 +707,14 @@
 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/912426/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/912426/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/1779022 and its subdirectories
-I: Current time: Wed Jun 18 04:07:59 -12 2025
-I: pbuilder-time-stamp: 1750262879
+I: removing directory /srv/workspace/pbuilder/912426 and its subdirectories
+I: Current time: Thu May 16 23:46:41 +14 2024
+I: pbuilder-time-stamp: 1715852801