Diff of the two buildlogs:

--
--- b1/build.log	2025-03-19 20:06:13.073971960 +0000
+++ b2/build.log	2025-03-19 20:08:27.815871874 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Mar 19 08:02:55 -12 2025
-I: pbuilder-time-stamp: 1742414575
+I: Current time: Wed Apr 22 16:29:16 +14 2026
+I: pbuilder-time-stamp: 1776824956
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -27,52 +27,84 @@
 dpkg-source: info: applying 0004-fix-package.path-of-ejabberd2prosody.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/1859449/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/1420633/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos15-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 Apr 22 02:29 /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/1420633/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/1420633/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=20 '
-  DISTRIBUTION='unstable'
-  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]="37" [3]="1" [4]="release" [5]="x86_64-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=amd64
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=42 '
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='5e94c4ef86084a08bd573b550cac55f2'
-  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='1859449'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=ec687357760947d7ad7bbe9192b928bb
+  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=1420633
   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.3txipFyX/pbuilderrc_RL3s --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.3txipFyX/b1 --logfile b1/build.log prosody_13.0.0-1.dsc'
-  SUDO_GID='111'
-  SUDO_UID='106'
-  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.3txipFyX/pbuilderrc_DvHb --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.3txipFyX/b2 --logfile b2/build.log prosody_13.0.0-1.dsc'
+  SUDO_GID=111
+  SUDO_UID=106
+  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 ionos11-amd64 6.1.0-32-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.129-1 (2025-03-06) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.12.12+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.12-1~bpo12+1 (2025-02-23) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Mar  4 11:20 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/1859449/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/1420633/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -202,7 +234,7 @@
 Get: 70 http://deb.debian.org/debian unstable/main amd64 pandoc-data all 3.1.11.1-3 [459 kB]
 Get: 71 http://deb.debian.org/debian unstable/main amd64 pandoc amd64 3.1.11.1+ds-2 [26.4 MB]
 Get: 72 http://deb.debian.org/debian unstable/main amd64 txt2man all 1.7.1-4 [35.4 kB]
-Fetched 66.1 MB in 2s (36.7 MB/s)
+Fetched 66.1 MB in 7s (8954 kB/s)
 Preconfiguring packages ...
 Selecting previously unselected package readline-common.
 (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 ... 19784 files and directories currently installed.)
@@ -515,7 +547,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/prosody-13.0.0/ && 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  > ../prosody_13.0.0-1_source.changes
+I: user script /srv/workspace/pbuilder/1420633/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/1420633/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/prosody-13.0.0/ && 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  > ../prosody_13.0.0-1_source.changes
 dpkg-buildpackage: info: source package prosody
 dpkg-buildpackage: info: source version 13.0.0-1
 dpkg-buildpackage: info: source distribution unstable
@@ -569,7 +605,7 @@
    debian/rules override_dh_auto_build
 make[1]: Entering directory '/build/reproducible-path/prosody-13.0.0'
 dh_auto_build
-	make -j20
+	make -j42
 make[2]: Entering directory '/build/reproducible-path/prosody-13.0.0'
 sed "1s| lua$| lua5.4|; \
 	s|^CFG_SOURCEDIR=.*;$|CFG_SOURCEDIR='/usr/lib/prosody';|; \
@@ -598,8 +634,10 @@
 x86_64-linux-gnu-gcc -std=c99 -fPIC -std=c99 -Wall -pedantic -Wextra -Wshadow -Wformat=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/prosody-13.0.0=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -I/usr/include/lua5.4 -Wdate-time -D_FORTIFY_SOURCE=2  -c -o strbitop.o strbitop.c
 x86_64-linux-gnu-gcc -std=c99 -fPIC -std=c99 -Wall -pedantic -Wextra -Wshadow -Wformat=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/prosody-13.0.0=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -I/usr/include/lua5.4 -Wdate-time -D_FORTIFY_SOURCE=2  -c -o struct.o struct.c
 x86_64-linux-gnu-gcc -std=c99 -fPIC -std=c99 -Wall -pedantic -Wextra -Wshadow -Wformat=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/prosody-13.0.0=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -I/usr/include/lua5.4 -Wdate-time -D_FORTIFY_SOURCE=2  -c -o crypto.o crypto.c
-x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o time.so time.o 
 x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o compat.so compat.o 
+x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o time.so time.o 
+x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o strbitop.so strbitop.o 
+x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o table.so table.o 
 pposix.c: In function 'lc_daemonize':
 pposix.c:126:9: warning: ignoring return value of 'freopen' declared with attribute 'warn_unused_result' [-Wunused-result]
   126 |         freopen("/dev/null", "r", stdin);
@@ -610,15 +648,13 @@
 pposix.c:128:9: warning: ignoring return value of 'freopen' declared with attribute 'warn_unused_result' [-Wunused-result]
   128 |         freopen("/dev/null", "w", stderr);
       |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o table.so table.o 
-x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o signal.so signal.o 
-x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o net.so net.o 
-x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o strbitop.so strbitop.o 
-x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o ringbuffer.so ringbuffer.o 
 x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o poll.so poll.o 
-x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o encodings.so encodings.o -licui18n -licudata -licuuc
+x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o net.so net.o 
+x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o signal.so signal.o 
 x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o hashes.so hashes.o -lcrypto
+x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o ringbuffer.so ringbuffer.o 
 x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o struct.so struct.o 
+x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o encodings.so encodings.o -licui18n -licudata -licuuc
 x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o pposix.so pposix.o 
 x86_64-linux-gnu-gcc -shared -Wl,-z,relro -Wl,-z,now -o crypto.so crypto.o -lcrypto
 install -m644 encodings.so hashes.so net.so pposix.so signal.so table.so ringbuffer.so time.so poll.so compat.so strbitop.so struct.so crypto.so ../util/
@@ -642,11 +678,11 @@
 make[2]: Leaving directory '/build/reproducible-path/prosody-13.0.0/man'
 make[1]: Leaving directory '/build/reproducible-path/prosody-13.0.0'
    dh_auto_test
-	make -j20 test "TESTSUITEFLAGS=-j20 --verbose" VERBOSE=1
+	make -j42 test "TESTSUITEFLAGS=-j42 --verbose" VERBOSE=1
 make[1]: Entering directory '/build/reproducible-path/prosody-13.0.0'
 busted --helper loader --lua=lua5.4
 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++..++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++.++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-826 successes / 0 failures / 0 errors / 3 pending : 10.953773 seconds
+826 successes / 0 failures / 0 errors / 3 pending : 2.179315 seconds
 
 Pending -> spec/util_events_spec.lua @ 113
 util.events API should support adding handlers within an event handler
@@ -753,8 +789,8 @@
    dh_gencontrol
    dh_md5sums
    dh_builddeb
-dpkg-deb: building package 'prosody' in '../prosody_13.0.0-1_amd64.deb'.
 dpkg-deb: building package 'prosody-dbgsym' in '../prosody-dbgsym_13.0.0-1_amd64.deb'.
+dpkg-deb: building package 'prosody' in '../prosody_13.0.0-1_amd64.deb'.
  dpkg-genbuildinfo --build=binary -O../prosody_13.0.0-1_amd64.buildinfo
  dpkg-genchanges --build=binary -O../prosody_13.0.0-1_amd64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -762,12 +798,14 @@
 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/1420633/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/1420633/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/1859449 and its subdirectories
-I: Current time: Wed Mar 19 08:06:12 -12 2025
-I: pbuilder-time-stamp: 1742414772
+I: removing directory /srv/workspace/pbuilder/1420633 and its subdirectories
+I: Current time: Wed Apr 22 16:31:26 +14 2026
+I: pbuilder-time-stamp: 1776825086