Diff of the two buildlogs:

--
--- b1/build.log	2024-12-11 09:22:35.436342373 +0000
+++ b2/build.log	2024-12-11 09:25:06.013504501 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Tue Dec 10 21:21:11 -12 2024
-I: pbuilder-time-stamp: 1733908871
+I: Current time: Wed Dec 11 23:22:44 +14 2024
+I: pbuilder-time-stamp: 1733908964
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -35,52 +35,84 @@
 dpkg-source: info: applying 0009-Patch-upstream-build-system-to-work-with-python3.patch
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/15929/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/22579/tmp/hooks/D01_modify_environment starting
+debug: Running on ff4a.
+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 Dec 11 09:23 /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/22579/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/22579/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='armhf'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=3 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='armhf'
+  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]="arm-unknown-linux-gnueabihf")
+  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=armhf
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=4 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=arm
+  HOST_ARCH=armhf
   IFS=' 	
   '
-  INVOCATION_ID='c4d0bf3d39d6464b9bddcb644dac2222'
-  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='15929'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=60b3af14d4654b8fad88ae8cc6677f49
+  LANG=C
+  LANGUAGE=it_CH:it
+  LC_ALL=C
+  MACHTYPE=arm-unknown-linux-gnueabihf
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnueabihf
+  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=22579
   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.eKu8eOPM/pbuilderrc_XqXV --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.eKu8eOPM/b1 --logfile b1/build.log bcron_0.11-22.dsc'
-  SUDO_GID='110'
-  SUDO_UID='103'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://10.0.0.15:3142/'
+  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.eKu8eOPM/pbuilderrc_TUlC --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.eKu8eOPM/b2 --logfile b2/build.log bcron_0.11-22.dsc'
+  SUDO_GID=113
+  SUDO_UID=107
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://10.0.0.15:3142/
 I: uname -a
-  Linux virt64z 6.1.0-28-arm64 #1 SMP Debian 6.1.119-1 (2024-11-22) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-28-armmp-lpae #1 SMP Debian 6.1.119-1 (2024-11-22) armv7l GNU/Linux
 I: ls -l /bin
   lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/15929/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/22579/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -220,7 +252,7 @@
 Get: 85 http://deb.debian.org/debian trixie/main armhf tex-common all 6.18 [32.5 kB]
 Get: 86 http://deb.debian.org/debian trixie/main armhf texinfo-lib armhf 7.1.1-1+b1 [209 kB]
 Get: 87 http://deb.debian.org/debian trixie/main armhf texinfo all 7.1.1-1 [1753 kB]
-Fetched 43.3 MB in 4s (11.0 MB/s)
+Fetched 43.3 MB in 3s (14.9 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libpython3.12-minimal:armhf.
 (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 ... 19680 files and directories currently installed.)
@@ -528,8 +560,8 @@
 Setting up tzdata (2024b-4) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Wed Dec 11 09:21:51 UTC 2024.
-Universal Time is now:  Wed Dec 11 09:21:51 UTC 2024.
+Local time is now:      Wed Dec 11 09:24:00 UTC 2024.
+Universal Time is now:  Wed Dec 11 09:24:00 UTC 2024.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up libxml-sax-base-perl (1.09-3) ...
@@ -613,7 +645,11 @@
 fakeroot is already the newest version (1.36-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/bcron-0.11/ && 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  > ../bcron_0.11-22_source.changes
+I: user script /srv/workspace/pbuilder/22579/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/22579/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/bcron-0.11/ && 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  > ../bcron_0.11-22_source.changes
 dpkg-buildpackage: info: source package bcron
 dpkg-buildpackage: info: source version 0.11-22
 dpkg-buildpackage: info: source distribution unstable
@@ -625,7 +661,7 @@
    debian/rules override_dh_auto_clean
 make[1]: Entering directory '/build/reproducible-path/bcron-0.11'
 dh_auto_clean
-	make -j3 clean
+	make -j4 clean
 make[2]: Entering directory '/build/reproducible-path/bcron-0.11'
 rm -f `cat TARGETS`
 make[2]: Leaving directory '/build/reproducible-path/bcron-0.11'
@@ -644,7 +680,7 @@
 echo 'arm-linux-gnueabihf-gcc -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/bcron-0.11=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security' > conf-cc
 echo 'arm-linux-gnueabihf-gcc -Wl,-z,relro -Wl,-z,now' > conf-ld
 dh_auto_build
-	make -j3 "INSTALL=install --strip-program=true"
+	make -j4 "INSTALL=install --strip-program=true"
 make[2]: Entering directory '/build/reproducible-path/bcron-0.11'
 ( echo '#!/bin/sh'; \
   echo 'lib="$1"; shift';\
@@ -657,13 +693,14 @@
   echo 'base=`echo "$source" | sed -e s:\\\\.c$::`'; \
   echo exec `head -n 1 conf-cc` -I.  '-o ${base}.o -c $source ${1+"$@"}'; \
 ) >compile
+chmod 755 makelib
+chmod 755 compile
 ( echo '#!/bin/sh';\
   echo 'main="$1"; shift';\
   echo exec `head -n 1 conf-ld` -L. '-o "$main" "$main.o" ${1+"$@"}'; \
 ) >load
-chmod 755 makelib
 python3 -c 'import shlex; line=shlex.split(open("conf-sendmail").readline().strip()); print("const char* sendmail[] = { "+",".join(["\"%s\""%a for a in line])+",NULL };")' >conf_sendmail.c
-chmod 755 compile
+./compile test-sched.c
 chmod 755 load
 makeinfo bcron.texi
 makeinfo --html --no-split bcron.texi
@@ -698,15 +735,14 @@
 bcron-exec.c:260:9: warning: ignoring return value of 'write' declared with attribute 'warn_unused_result' [-Wunused-result]
   260 |         write(2, buf, rd);
       |         ^~~~~~~~~~~~~~~~~
-./compile test-sched.c
 ./makelib bcron.a chdir.o connection.o crontab.o crontabs.o job.o job_dump.o ministat.o sendpacket.o tempfile.o time.o timespec-next.o timespec-parse.o
 ./load bcrontab bcron.a -lbg-cli -lbg 
 ./load bcron-update bcron.a -lbg 
 ./load bcron-spool bcron.a -lbg 
 ./load bcron-start bcron.a -lbg 
 ./load bcron-sched bcron.a -lbg 
-./load bcron-exec bcron.a -lbg 
 ./load test-sched bcron.a -lbg-cli -lbg 
+./load bcron-exec bcron.a -lbg 
 make[2]: Leaving directory '/build/reproducible-path/bcron-0.11'
 make[1]: Leaving directory '/build/reproducible-path/bcron-0.11'
    debian/rules override_dh_auto_test
@@ -778,12 +814,14 @@
 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/22579/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/22579/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/15929 and its subdirectories
-I: Current time: Tue Dec 10 21:22:31 -12 2024
-I: pbuilder-time-stamp: 1733908951
+I: removing directory /srv/workspace/pbuilder/22579 and its subdirectories
+I: Current time: Wed Dec 11 23:25:01 +14 2024
+I: pbuilder-time-stamp: 1733909101