Diff of the two buildlogs:

--
--- b1/build.log	2025-03-27 18:29:46.827133410 +0000
+++ b2/build.log	2025-03-27 18:51:53.259359332 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Apr 29 12:37:53 -12 2026
-I: pbuilder-time-stamp: 1777509473
+I: Current time: Fri Mar 28 08:29:50 +14 2025
+I: pbuilder-time-stamp: 1743100190
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -27,54 +27,86 @@
 dpkg-source: info: applying add-all-dirs-in-elixir_root.patch
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/96615/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/38029/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos12-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 Mar 27 18:30 /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/38029/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/38029/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=22 '
-  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=10 '
+  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='4a2c3fee205747088e1318d161b454d0'
-  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='96615'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=86a695b25b47454890852b8679d242b1
+  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=38029
   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.igvRVSiv/pbuilderrc_2jHO --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.igvRVSiv/b1 --logfile b1/build.log elixir-lang_1.18.3.dfsg-1.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://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.igvRVSiv/pbuilderrc_b1OM --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.igvRVSiv/b2 --logfile b2/build.log elixir-lang_1.18.3.dfsg-1.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://46.16.76.132:3128
 I: uname -a
-  Linux ionos6-i386 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 6.1.0-32-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.129-1 (2025-03-06) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/96615/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4 11:20 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/38029/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -436,7 +468,7 @@
 Get: 308 http://deb.debian.org/debian unstable/main i386 git-man all 1:2.49.0-1 [2236 kB]
 Get: 309 http://deb.debian.org/debian unstable/main i386 git i386 1:2.49.0-1 [9570 kB]
 Get: 310 http://deb.debian.org/debian unstable/main i386 rebar3 all 3.24.0-1 [810 kB]
-Fetched 241 MB in 4s (61.6 MB/s)
+Fetched 241 MB in 9s (27.4 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libsystemd-shared:i386.
 (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 ... 19791 files and directories currently installed.)
@@ -1725,7 +1757,11 @@
 fakeroot is already the newest version (1.37.1.1-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/elixir-lang-1.18.3.dfsg/ && 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  > ../elixir-lang_1.18.3.dfsg-1_source.changes
+I: user script /srv/workspace/pbuilder/38029/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/38029/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/elixir-lang-1.18.3.dfsg/ && 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  > ../elixir-lang_1.18.3.dfsg-1_source.changes
 dpkg-buildpackage: info: source package elixir-lang
 dpkg-buildpackage: info: source version 1.18.3.dfsg-1
 dpkg-buildpackage: info: source distribution unstable
@@ -1735,7 +1771,7 @@
  debian/rules clean
 dh clean
    dh_auto_clean
-	make -j22 clean
+	make -j10 clean
 make[1]: Entering directory '/build/reproducible-path/elixir-lang-1.18.3.dfsg'
 rm -f man/elixir.1
 rm -f man/elixir.1.bak
@@ -1761,7 +1797,7 @@
    dh_autoreconf
    dh_auto_configure
    dh_auto_build
-	make -j22 "INSTALL=install --strip-program=true"
+	make -j10 "INSTALL=install --strip-program=true"
 make[1]: Entering directory '/build/reproducible-path/elixir-lang-1.18.3.dfsg'
 Recompile: src/iex
 Recompile: src/elixir_utils
@@ -1848,17 +1884,20 @@
 make[2]: Entering directory '/build/reproducible-path/elixir-lang-1.18.3.dfsg'
 ==> unicode (compile)
 [Unicode] Break on 25 whitespace codepoints
+Compiling lib/elixir/unicode/unicode.ex (it's taking more than 10s)
 [Unicode] Tokenizing 112700 non-ascii codepoints
 [Unicode] Tokenizing 65 scriptsets
 Compiling lib/elixir/unicode/tokenizer.ex (it's taking more than 10s)
 make[2]: Leaving directory '/build/reproducible-path/elixir-lang-1.18.3.dfsg'
 ==> elixir (compile)
-Compiling lib/code/formatter.ex (it's taking more than 10s)
 Compiling lib/base.ex (it's taking more than 10s)
+Compiling lib/code/formatter.ex (it's taking more than 10s)
+Compiling lib/exception.ex (it's taking more than 10s)
 Compiling lib/enum.ex (it's taking more than 10s)
-Compiling lib/json.ex (it's taking more than 10s)
 Compiling lib/inspect.ex (it's taking more than 10s)
-Compiling lib/exception.ex (it's taking more than 10s)
+Compiling lib/macro.ex (it's taking more than 10s)
+Compiling lib/kernel.ex (it's taking more than 10s)
+Compiling lib/module/types/descr.ex (it's taking more than 10s)
 Generated elixir app
 ==> eex (compile)
 ==> mix (compile)
@@ -1883,71 +1922,78 @@
 	CNT=$(( $CNT - 1)) ; \
 done ; \
 if [ ${rc} != 0 ] ; then exit $rc ; else epmd -kill || true ; fi
-	make -j22 test
+	make -j10 test
 make[2]: Entering directory '/build/reproducible-path/elixir-lang-1.18.3.dfsg'
 ==> elixir (eunit)
   All 126 tests passed.
 
 ==> elixir (ex_unit)
-Running ExUnit with seed: 74139, max_cases: 48
+Running ExUnit with seed: 378404, max_cases: 26
 Excluding tags: [windows: true]
 
 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
-Finished in 120.2 seconds (47.6s on load, 39.6s async, 33.0s sync)
+Finished in 117.9 seconds (49.9s on load, 50.8s async, 17.1s sync)
 2040 doctests, 4550 tests, 0 failures, 13 excluded
 ==> ex_unit (ex_unit)
-Running ExUnit with seed: 670691, max_cases: 48
+Running ExUnit with seed: 974389, max_cases: 26
 
 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................
-Finished in 21.3 seconds (14.8s on load, 1.0s async, 5.4s sync)
+Finished in 14.8 seconds (8.8s on load, 0.4s async, 5.5s sync)
 48 doctests, 392 tests, 0 failures
 ==> logger (ex_unit)
-Running ExUnit with seed: 955406, max_cases: 48
+Running ExUnit with seed: 95545, max_cases: 26
 
 ................................................................................................................................................................
-Finished in 8.1 seconds (7.2s on load, 0.02s async, 0.9s sync)
+Finished in 10.5 seconds (9.4s on load, 0.02s async, 1.1s sync)
 3 doctests, 157 tests, 0 failures
 ==> eex (ex_unit)
-Running ExUnit with seed: 471048, max_cases: 48
+Running ExUnit with seed: 453725, max_cases: 26
 
 .................................................................................................................
-Finished in 1.0 seconds (0.9s on load, 0.09s async, 0.00s sync)
+Finished in 1.7 seconds (1.6s on load, 0.1s async, 0.00s sync)
 7 doctests, 106 tests, 0 failures
 ==> iex (ex_unit)
-Running ExUnit with seed: 483852, max_cases: 48
+Running ExUnit with seed: 292978, max_cases: 26
 
 .........................................................................................................................................................................................................................................................................
-Finished in 16.9 seconds (3.3s on load, 0.6s async, 12.9s sync)
+Finished in 38.8 seconds (7.0s on load, 0.8s async, 30.9s sync)
 265 tests, 0 failures
 ==> mix (ex_unit)
-Running ExUnit with seed: 147006, max_cases: 48
+Running ExUnit with seed: 94050, max_cases: 26
 Excluding tags: [windows: true]
 
-......................................................................................
-00:47:32.352 [notice] Application parsetools exited: :stopped
+.................................................................................................................................................................
+18:43:37.673 [notice] Application parsetools exited: :stopped
 .
-00:47:32.383 [notice] Application parsetools exited: :stopped
+18:43:37.735 [notice] Application parsetools exited: :stopped
 .
-00:47:32.425 [notice] Application parsetools exited: :stopped
-...................................
-00:47:34.216 [notice] Application parsetools exited: :stopped
+18:43:37.839 [notice] Application parsetools exited: :stopped
+...........................................
+18:43:51.302 [notice] Application parsetools exited: :stopped
 .
-00:47:34.281 [notice] Application parsetools exited: :stopped
+18:43:51.416 [notice] Application parsetools exited: :stopped
 .
-00:47:34.308 [notice] Application parsetools exited: :stopped
+18:43:51.495 [notice] Application parsetools exited: :stopped
 .
-00:47:34.348 [notice] Application parsetools exited: :stopped
-...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
-Finished in 319.2 seconds (4.5s on load, 0.1s async, 314.5s sync)
+18:43:51.562 [notice] Application parsetools exited: :stopped
+............    warning: redefining module Mix.Tasks.Local.Sample (current version defined in memory)
+    │
+  1 │ defmodule Mix.Tasks.Local.Sample do
+    │ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    │
+    └─ lib/local.sample.ex:1: Mix.Tasks.Local.Sample (module)
+
+................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
+Finished in 517.6 seconds (11.9s on load, 0.3s async, 505.4s sync)
 6 doctests, 855 tests, 0 failures
 make[2]: Leaving directory '/build/reproducible-path/elixir-lang-1.18.3.dfsg'
 Killed
-epmd: Thu Apr 30 00:52:35 2026: got KILL_REQ - terminates normal
+epmd: Thu Mar 27 18:51:33 2025: got KILL_REQ - terminates normal
 make[1]: Leaving directory '/build/reproducible-path/elixir-lang-1.18.3.dfsg'
    create-stamp debian/debhelper-build-stamp
    dh_prep
    dh_auto_install --destdir=debian/elixir/
-	make -j22 install DESTDIR=/build/reproducible-path/elixir-lang-1.18.3.dfsg/debian/elixir AM_UPDATE_INFO_DIR=no "INSTALL=install --strip-program=true"
+	make -j10 install DESTDIR=/build/reproducible-path/elixir-lang-1.18.3.dfsg/debian/elixir AM_UPDATE_INFO_DIR=no "INSTALL=install --strip-program=true"
 make[1]: Entering directory '/build/reproducible-path/elixir-lang-1.18.3.dfsg'
 ==> elixir (install)
 install: WARNING: ignoring --strip-program option as -s option was not specified
@@ -2014,12 +2060,14 @@
 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/38029/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/38029/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/96615 and its subdirectories
-I: Current time: Wed Apr 29 12:52:46 -12 2026
-I: pbuilder-time-stamp: 1777510366
+I: removing directory /srv/workspace/pbuilder/38029 and its subdirectories
+I: Current time: Fri Mar 28 08:51:52 +14 2025
+I: pbuilder-time-stamp: 1743101512