Diff of the two buildlogs:

--
--- b1/build.log	2025-03-04 06:37:54.322319657 +0000
+++ b2/build.log	2025-03-04 06:38:53.079661330 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Mar  3 18:36:05 -12 2025
-I: pbuilder-time-stamp: 1741070165
+I: Current time: Tue Apr  7 03:00:56 +14 2026
+I: pbuilder-time-stamp: 1775480456
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -34,54 +34,86 @@
 dpkg-source: info: applying 0010-Define-post_input_action-post_output_action-for-UHD-.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/30326/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/70862/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos6-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 Apr  6 13:01 /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/70862/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/70862/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=11 '
-  DISTRIBUTION='unstable'
-  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]="37" [3]="1" [4]="release" [5]="i686-pc-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=i386
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=21 '
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=i686
+  HOST_ARCH=i386
   IFS=' 	
   '
-  INVOCATION_ID='2179707360b648de95a50fe7973c763e'
-  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='30326'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=58e49f708c2840b68c62c59141df437d
+  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=70862
   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.hqOYFySX/pbuilderrc_Hi62 --distribution unstable --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.hqOYFySX/b1 --logfile b1/build.log soapyuhd_0.4.1-5.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://46.16.76.132:3128'
+  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.hqOYFySX/pbuilderrc_48Ji --distribution unstable --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.hqOYFySX/b2 --logfile b2/build.log soapyuhd_0.4.1-5.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://213.165.73.152:3128
 I: uname -a
-  Linux ionos2-i386 6.1.0-31-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.128-1 (2025-02-07) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-31-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.128-1 (2025-02-07) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/30326/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/70862/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -219,7 +251,7 @@
 Get: 88 http://deb.debian.org/debian unstable/main i386 libusb-1.0-0 i386 2:1.0.27-2 [60.8 kB]
 Get: 89 http://deb.debian.org/debian unstable/main i386 libuhd4.8.0 i386 4.8.0.0+ds1-2 [4113 kB]
 Get: 90 http://deb.debian.org/debian unstable/main i386 libuhd-dev i386 4.8.0.0+ds1-2 [244 kB]
-Fetched 66.6 MB in 1s (48.9 MB/s)
+Fetched 66.6 MB in 1s (71.0 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package tzdata.
 (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 ... 19769 files and directories currently installed.)
@@ -525,8 +557,8 @@
 Setting up tzdata (2025a-2) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Tue Mar  4 06:36:54 UTC 2025.
-Universal Time is now:  Tue Mar  4 06:36:54 UTC 2025.
+Local time is now:      Mon Apr  6 13:01:19 UTC 2026.
+Universal Time is now:  Mon Apr  6 13:01:19 UTC 2026.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up libboost-atomic1.83.0:i386 (1.83.0-4.1+b1) ...
@@ -604,7 +636,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/soapyuhd-0.4.1/ && 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  > ../soapyuhd_0.4.1-5_source.changes
+I: user script /srv/workspace/pbuilder/70862/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/70862/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/soapyuhd-0.4.1/ && 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  > ../soapyuhd_0.4.1-5_source.changes
 dpkg-buildpackage: info: source package soapyuhd
 dpkg-buildpackage: info: source version 0.4.1-5
 dpkg-buildpackage: info: source distribution unstable
@@ -673,7 +709,7 @@
 -- Boost libraries: Boost::thread;Boost::system
 -- Module uhdSupport configured with version: 0.4.1
 -- Using install prefix: /usr
--- Configuring done (2.3s)
+-- Configuring done (0.9s)
 -- Generating done (0.0s)
 CMake Warning:
   Manually-specified variables were not used by the project:
@@ -686,7 +722,7 @@
 -- Build files have been written to: /build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu
 make[1]: Leaving directory '/build/reproducible-path/soapyuhd-0.4.1'
    dh_auto_build -O--buildsystem=cmake
-	cd obj-i686-linux-gnu && make -j11 "INSTALL=install --strip-program=true" VERBOSE=1
+	cd obj-i686-linux-gnu && make -j21 "INSTALL=install --strip-program=true" VERBOSE=1
 make[1]: Entering directory '/build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu'
 /usr/bin/cmake -S/build/reproducible-path/soapyuhd-0.4.1 -B/build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu --check-build-system CMakeFiles/Makefile.cmake 0
 /usr/bin/cmake -E cmake_progress_start /build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu/CMakeFiles /build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu//CMakeFiles/progress.marks
@@ -700,15 +736,15 @@
 cd /build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /build/reproducible-path/soapyuhd-0.4.1 /build/reproducible-path/soapyuhd-0.4.1 /build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu /build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu /build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu/CMakeFiles/soapySupport.dir/DependInfo.cmake "--color="
 make[3]: Leaving directory '/build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu'
 make  -f CMakeFiles/uhdSupport.dir/build.make CMakeFiles/uhdSupport.dir/build
+make[3]: Entering directory '/build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu'
 make[3]: Leaving directory '/build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu'
 make  -f CMakeFiles/soapySupport.dir/build.make CMakeFiles/soapySupport.dir/build
 make[3]: Entering directory '/build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu'
-make[3]: Entering directory '/build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu'
 [ 20%] Building CXX object CMakeFiles/uhdSupport.dir/Version.cpp.o
 [ 40%] Building CXX object CMakeFiles/uhdSupport.dir/SoapyUHDDevice.cpp.o
-[ 60%] Building CXX object CMakeFiles/soapySupport.dir/UHDSoapyDevice.cpp.o
 /usr/bin/c++ -DBOOST_ALL_DYN_LINK -DBOOST_ATOMIC_DYN_LINK -DBOOST_ATOMIC_NO_LIB -DBOOST_SYSTEM_DYN_LINK -DBOOST_SYSTEM_NO_LIB -DBOOST_THREAD_DYN_LINK -DBOOST_THREAD_NO_LIB -DUHD_HAS_DEVICE_FILTER -DUHD_HAS_SET_PUBLISHER -DUHD_HAS_SET_RX_AGC -DuhdSupport_EXPORTS -I/build/reproducible-path/soapyuhd-0.4.1 -g -O2 -ffile-prefix-map=/build/reproducible-path/soapyuhd-0.4.1=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -std=gnu++14 -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -Wall -Wextra -Wnon-virtual-dtor -MD -MT CMakeFiles/uhdSupport.dir/Version.cpp.o -MF CMakeFiles/uhdSupport.dir/Version.cpp.o.d -o CMakeFiles/uhdSupport.dir/Version.cpp.o -c /build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu/Version.cpp
 /usr/bin/c++ -DBOOST_ALL_DYN_LINK -DBOOST_ATOMIC_DYN_LINK -DBOOST_ATOMIC_NO_LIB -DBOOST_SYSTEM_DYN_LINK -DBOOST_SYSTEM_NO_LIB -DBOOST_THREAD_DYN_LINK -DBOOST_THREAD_NO_LIB -DUHD_HAS_DEVICE_FILTER -DUHD_HAS_SET_PUBLISHER -DUHD_HAS_SET_RX_AGC -DuhdSupport_EXPORTS -I/build/reproducible-path/soapyuhd-0.4.1 -g -O2 -ffile-prefix-map=/build/reproducible-path/soapyuhd-0.4.1=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -std=gnu++14 -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -Wall -Wextra -Wnon-virtual-dtor -MD -MT CMakeFiles/uhdSupport.dir/SoapyUHDDevice.cpp.o -MF CMakeFiles/uhdSupport.dir/SoapyUHDDevice.cpp.o.d -o CMakeFiles/uhdSupport.dir/SoapyUHDDevice.cpp.o -c /build/reproducible-path/soapyuhd-0.4.1/SoapyUHDDevice.cpp
+[ 60%] Building CXX object CMakeFiles/soapySupport.dir/UHDSoapyDevice.cpp.o
 /usr/bin/c++ -DBOOST_ALL_DYN_LINK -DBOOST_ATOMIC_DYN_LINK -DBOOST_ATOMIC_NO_LIB -DBOOST_SYSTEM_DYN_LINK -DBOOST_SYSTEM_NO_LIB -DBOOST_THREAD_DYN_LINK -DBOOST_THREAD_NO_LIB -DUHD_HAS_DEVICE_FILTER -DUHD_HAS_SET_PUBLISHER -DUHD_HAS_SET_RX_AGC -DsoapySupport_EXPORTS -I/build/reproducible-path/soapyuhd-0.4.1 -g -O2 -ffile-prefix-map=/build/reproducible-path/soapyuhd-0.4.1=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -std=gnu++14 -fPIC -Wall -Wextra -Wnon-virtual-dtor -MD -MT CMakeFiles/soapySupport.dir/UHDSoapyDevice.cpp.o -MF CMakeFiles/soapySupport.dir/UHDSoapyDevice.cpp.o.d -o CMakeFiles/soapySupport.dir/UHDSoapyDevice.cpp.o -c /build/reproducible-path/soapyuhd-0.4.1/UHDSoapyDevice.cpp
 In file included from /usr/include/boost/smart_ptr/detail/requires_cxx11.hpp:9,
                  from /usr/include/boost/smart_ptr/shared_ptr.hpp:17,
@@ -738,10 +774,10 @@
 /usr/bin/cmake -E cmake_progress_start /build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu/CMakeFiles 0
 make[1]: Leaving directory '/build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu'
    dh_auto_test -O--buildsystem=cmake
-	cd obj-i686-linux-gnu && make -j11 test ARGS\+=--verbose ARGS\+=-j11
+	cd obj-i686-linux-gnu && make -j21 test ARGS\+=--verbose ARGS\+=-j21
 make[1]: Entering directory '/build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu'
 Running tests...
-/usr/bin/ctest --force-new-ctest-process --verbose -j11
+/usr/bin/ctest --force-new-ctest-process --verbose -j21
 UpdateCTestConfiguration  from :/build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu/DartConfiguration.tcl
 UpdateCTestConfiguration  from :/build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu/DartConfiguration.tcl
 Test project /build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu
@@ -758,7 +794,7 @@
    dh_testroot -O--buildsystem=cmake
    dh_prep -O--buildsystem=cmake
    dh_auto_install -O--buildsystem=cmake
-	cd obj-i686-linux-gnu && make -j11 install DESTDIR=/build/reproducible-path/soapyuhd-0.4.1/debian/tmp AM_UPDATE_INFO_DIR=no "INSTALL=install --strip-program=true"
+	cd obj-i686-linux-gnu && make -j21 install DESTDIR=/build/reproducible-path/soapyuhd-0.4.1/debian/tmp AM_UPDATE_INFO_DIR=no "INSTALL=install --strip-program=true"
 make[1]: Entering directory '/build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu'
 /usr/bin/cmake -S/build/reproducible-path/soapyuhd-0.4.1 -B/build/reproducible-path/soapyuhd-0.4.1/obj-i686-linux-gnu --check-build-system CMakeFiles/Makefile.cmake 0
 make  -f CMakeFiles/Makefile2 preinstall
@@ -808,12 +844,14 @@
 dpkg-buildpackage: info: binary-only upload (no source included)
 dpkg-genchanges: info: not including original source code in upload
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/70862/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/70862/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/30326 and its subdirectories
-I: Current time: Mon Mar  3 18:37:52 -12 2025
-I: pbuilder-time-stamp: 1741070272
+I: removing directory /srv/workspace/pbuilder/70862 and its subdirectories
+I: Current time: Tue Apr  7 03:01:52 +14 2026
+I: pbuilder-time-stamp: 1775480512