Diff of the two buildlogs:

--
--- b1/build.log	2024-04-22 06:05:03.115862607 +0000
+++ b2/build.log	2024-04-22 06:05:47.217981908 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Apr 21 18:04:03 -12 2024
-I: pbuilder-time-stamp: 1713765843
+I: Current time: Mon May 26 02:28:05 +14 2025
+I: pbuilder-time-stamp: 1748176085
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -25,51 +25,83 @@
 dpkg-source: info: unpacking ser2net_4.6.0-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/4135699/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/2104086/tmp/hooks/D01_modify_environment starting
+debug: Running on infom02-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 25 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/2104086/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/2104086/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'
+  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=12 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='amd64'
+  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='dbc57482cc94486b98f51ea21f7e1b59'
-  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='4135699'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=3101684371b148f984dee2beec1b670f
+  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=2104086
   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.XAPAr029/pbuilderrc_MkEJ --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.XAPAr029/b1 --logfile b1/build.log ser2net_4.6.0-1.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'
+  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.XAPAr029/pbuilderrc_0krf --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.XAPAr029/b2 --logfile b2/build.log ser2net_4.6.0-1.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'
 I: uname -a
-  Linux infom01-amd64 6.1.0-20-cloud-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.85-1 (2024-04-11) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.6.13+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.6.13-1~bpo12+1 (2024-02-15) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Apr 21 07:11 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/4135699/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May 24 13:34 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/2104086/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -223,7 +255,7 @@
 Get: 90 http://deb.debian.org/debian trixie/main amd64 libyaml-0-2 amd64 0.2.5-1 [53.6 kB]
 Get: 91 http://deb.debian.org/debian trixie/main amd64 libyaml-dev amd64 0.2.5-1 [64.5 kB]
 Get: 92 http://deb.debian.org/debian trixie/main amd64 python3-gensio amd64 2.8.2-6 [175 kB]
-Fetched 41.3 MB in 1s (80.1 MB/s)
+Fetched 41.3 MB in 1s (54.2 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libpython3.11-minimal:amd64.
 (Reading database ... 
(Reading database ... 5%
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(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 ... 19890 files and directories currently installed.)
@@ -528,8 +560,8 @@
 Setting up tzdata (2024a-1) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Mon Apr 22 06:04:35 UTC 2024.
-Universal Time is now:  Mon Apr 22 06:04:35 UTC 2024.
+Local time is now:      Sun May 25 12:28:25 UTC 2025.
+Universal Time is now:  Sun May 25 12:28:25 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up libasound2-data (1.2.10-3) ...
@@ -616,7 +648,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/ser2net-4.6.0/ && 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  > ../ser2net_4.6.0-1_source.changes
+I: user script /srv/workspace/pbuilder/2104086/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/2104086/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/ser2net-4.6.0/ && 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  > ../ser2net_4.6.0-1_source.changes
 dpkg-buildpackage: info: source package ser2net
 dpkg-buildpackage: info: source version 4.6.0-1
 dpkg-buildpackage: info: source distribution unstable
@@ -804,7 +840,7 @@
 gcc -DPACKAGE_NAME=\"ser2net\" -DPACKAGE_TARNAME=\"ser2net\" -DPACKAGE_VERSION=\"4.6.0\" -DPACKAGE_STRING=\"ser2net\ 4.6.0\" -DPACKAGE_BUGREPORT=\"minyard@acm.org\" -DPACKAGE_URL=\"\" -DPACKAGE=\"ser2net\" -DVERSION=\"4.6.0\" -DHAVE_STDIO_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_STRINGS_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_UNISTD_H=1 -DSTDC_HEADERS=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DHAVE_LIBPAM=1 -DUSE_PAM=/\*\*/ -DUSE_SYSFS_LED_FEATURE=1 -DHAVE_LIBNSL=1 -DHAVE_WORDEXP_H=1 -DHAVE_WORDEXP=1 -DHAVE_LIBGENSIO=1 -DHAVE_LIBGENSIOOSH=1 -DHAVE_LIBGENSIOMDNS=1 -DHAVE_LIBYAML=1 -I.  -DSYSCONFDIR="\"/etc\"" -DDATAROOT="\"/usr/share\"" -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -I. -g -O2 -ffile-prefix-map=/build/reproducible-path/ser2net-4.6.0=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wall -pedantic -c -o timeproc.o timeproc.c
 gcc -DPACKAGE_NAME=\"ser2net\" -DPACKAGE_TARNAME=\"ser2net\" -DPACKAGE_VERSION=\"4.6.0\" -DPACKAGE_STRING=\"ser2net\ 4.6.0\" -DPACKAGE_BUGREPORT=\"minyard@acm.org\" -DPACKAGE_URL=\"\" -DPACKAGE=\"ser2net\" -DVERSION=\"4.6.0\" -DHAVE_STDIO_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_STRINGS_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_UNISTD_H=1 -DSTDC_HEADERS=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DHAVE_LIBPAM=1 -DUSE_PAM=/\*\*/ -DUSE_SYSFS_LED_FEATURE=1 -DHAVE_LIBNSL=1 -DHAVE_WORDEXP_H=1 -DHAVE_WORDEXP=1 -DHAVE_LIBGENSIO=1 -DHAVE_LIBGENSIOOSH=1 -DHAVE_LIBGENSIOMDNS=1 -DHAVE_LIBYAML=1 -I.  -DSYSCONFDIR="\"/etc\"" -DDATAROOT="\"/usr/share\"" -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -I. -g -O2 -ffile-prefix-map=/build/reproducible-path/ser2net-4.6.0=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wall -pedantic -c -o fileio.o fileio.c
 sed "s%@ser2netbindir@%/usr/sbin%" ser2net.service.in >ser2net.service
-/bin/bash ./libtool  --tag=CC   --mode=link gcc -Wall -I. -g -O2 -ffile-prefix-map=/build/reproducible-path/ser2net-4.6.0=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wall -pedantic  -Wl,-z,relro -Wl,-z,now -o ser2net controller.o dataxfer.o readconfig.o port.o ser2net.o led.o led_sysfs.o yamlconf.o auth.o gbuf.o trace.o portconfig.o ser2net_str.o portinfo.o rotator.o defaults.o addsysattrs.o mdns.o timeproc.o fileio.o  -lyaml -lgensiomdns -lgensioosh -lgensio -lnsl -lpam  -lpam
+/bin/sh ./libtool  --tag=CC   --mode=link gcc -Wall -I. -g -O2 -ffile-prefix-map=/build/reproducible-path/ser2net-4.6.0=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wall -pedantic  -Wl,-z,relro -Wl,-z,now -o ser2net controller.o dataxfer.o readconfig.o port.o ser2net.o led.o led_sysfs.o yamlconf.o auth.o gbuf.o trace.o portconfig.o ser2net_str.o portinfo.o rotator.o defaults.o addsysattrs.o mdns.o timeproc.o fileio.o  -lyaml -lgensiomdns -lgensioosh -lgensio -lnsl -lpam  -lpam
 libtool: link: gcc -Wall -I. -g -O2 -ffile-prefix-map=/build/reproducible-path/ser2net-4.6.0=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wall -pedantic -Wl,-z -Wl,relro -Wl,-z -Wl,now -o ser2net controller.o dataxfer.o readconfig.o port.o ser2net.o led.o led_sysfs.o yamlconf.o auth.o gbuf.o trace.o portconfig.o ser2net_str.o portinfo.o rotator.o defaults.o addsysattrs.o mdns.o timeproc.o fileio.o  -lyaml -lgensiomdns -lgensioosh -lgensio -lnsl -lpam
 make[2]: Leaving directory '/build/reproducible-path/ser2net-4.6.0'
 make[1]: Leaving directory '/build/reproducible-path/ser2net-4.6.0'
@@ -828,7 +864,7 @@
 make[2]: Entering directory '/build/reproducible-path/ser2net-4.6.0'
 make[3]: Entering directory '/build/reproducible-path/ser2net-4.6.0'
  /usr/bin/mkdir -p '/build/reproducible-path/ser2net-4.6.0/debian/ser2net/usr/sbin'
-  /bin/bash ./libtool   --mode=install /usr/bin/install -c ser2net '/build/reproducible-path/ser2net-4.6.0/debian/ser2net/usr/sbin'
+  /bin/sh ./libtool   --mode=install /usr/bin/install -c ser2net '/build/reproducible-path/ser2net-4.6.0/debian/ser2net/usr/sbin'
 libtool: install: /usr/bin/install -c ser2net /build/reproducible-path/ser2net-4.6.0/debian/ser2net/usr/sbin/ser2net
  /usr/bin/mkdir -p '/build/reproducible-path/ser2net-4.6.0/debian/ser2net/usr/share/man/man5'
  /usr/bin/install -c -m 644 ser2net.yaml.5 '/build/reproducible-path/ser2net-4.6.0/debian/ser2net/usr/share/man/man5'
@@ -860,8 +896,8 @@
 dpkg-gencontrol: warning: package ser2net: substitution variable ${misc:Pre-Depends} unused, but is defined
    dh_md5sums
    dh_builddeb
-dpkg-deb: building package 'ser2net' in '../ser2net_4.6.0-1_amd64.deb'.
 dpkg-deb: building package 'ser2net-dbgsym' in '../ser2net-dbgsym_4.6.0-1_amd64.deb'.
+dpkg-deb: building package 'ser2net' in '../ser2net_4.6.0-1_amd64.deb'.
  dpkg-genbuildinfo --build=binary -O../ser2net_4.6.0-1_amd64.buildinfo
  dpkg-genchanges --build=binary -O../ser2net_4.6.0-1_amd64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -869,12 +905,14 @@
 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/2104086/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/2104086/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/4135699 and its subdirectories
-I: Current time: Sun Apr 21 18:05:02 -12 2024
-I: pbuilder-time-stamp: 1713765902
+I: removing directory /srv/workspace/pbuilder/2104086 and its subdirectories
+I: Current time: Mon May 26 02:28:46 +14 2025
+I: pbuilder-time-stamp: 1748176126