Diff of the two buildlogs:

--
--- b1/build.log	2025-01-16 23:04:03.037824351 +0000
+++ b2/build.log	2025-01-16 23:11:57.840364640 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Feb 18 17:23:41 -12 2026
-I: pbuilder-time-stamp: 1771478621
+I: Current time: Fri Jan 17 13:04:05 +14 2025
+I: pbuilder-time-stamp: 1737068645
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -23,54 +23,86 @@
 dpkg-source: info: unpacking camlp5_8.03.01-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/59368/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/10930/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos2-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 Jan 16 23:04 /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/10930/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/10930/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='957e24df8b344943b5042630e9c1aad3'
-  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='59368'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=32e47e963c55437399f7ccd3f74c5401
+  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=10930
   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.Ng94N7vx/pbuilderrc_vcCv --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.Ng94N7vx/b1 --logfile b1/build.log camlp5_8.03.01-1.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.Ng94N7vx/pbuilderrc_E68E --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.Ng94N7vx/b2 --logfile b2/build.log camlp5_8.03.01-1.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 ionos16-i386 6.1.0-30-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.124-1 (2025-01-12) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-30-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.124-1 (2025-01-12) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/59368/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/10930/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -391,7 +423,7 @@
 Get: 160 http://deb.debian.org/debian unstable/main i386 texlive-base all 2024.20250114-1 [22.8 MB]
 Get: 161 http://deb.debian.org/debian unstable/main i386 texlive-latex-base all 2024.20250114-1 [1282 kB]
 Get: 162 http://deb.debian.org/debian unstable/main i386 texlive-latex-recommended all 2024.20250114-1 [8760 kB]
-Fetched 198 MB in 4s (53.1 MB/s)
+Fetched 198 MB in 3s (66.7 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libproc2-0: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 ... 19837 files and directories currently installed.)
@@ -1079,7 +1111,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/camlp5-8.03.01/ && 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  > ../camlp5_8.03.01-1_source.changes
+I: user script /srv/workspace/pbuilder/10930/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/10930/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/camlp5-8.03.01/ && 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  > ../camlp5_8.03.01-1_source.changes
 dpkg-buildpackage: info: source package camlp5
 dpkg-buildpackage: info: source version 8.03.01-1
 dpkg-buildpackage: info: source distribution unstable
@@ -1117,7 +1153,7 @@
 
 touch configure-stamp
 dh_auto_clean
-	make -j22 clean
+	make -j10 clean
 make[2]: Entering directory '/build/reproducible-path/camlp5-8.03.01'
 make clean_hot clean_cold
 make[3]: Entering directory '/build/reproducible-path/camlp5-8.03.01'
@@ -1133,33 +1169,33 @@
 make[5]: Entering directory '/build/reproducible-path/camlp5-8.03.01/ocaml_stuff/5.2.0/utils'
 rm -f *.cm[oix] *.o
 rm -f gramlib.cma
-make[4]: Leaving directory '/build/reproducible-path/camlp5-8.03.01/ocaml_src/lib'
 make[5]: Leaving directory '/build/reproducible-path/camlp5-8.03.01/ocaml_stuff/5.2.0/utils'
 make[4]: Leaving directory '/build/reproducible-path/camlp5-8.03.01/ocaml_stuff'
 for i in lib odyl main meta etc top ocpp man  compile; do (cd $i; make clean; cd ..); done
-make[4]: Entering directory '/build/reproducible-path/camlp5-8.03.01/ocaml_src/odyl'
-rm -f *.cm* *.pp[io] *.[ao] *.obj *.lib *.bak .*.bak *.out *.opt
-rm -f odyl_config.ml odyl
+make[4]: Leaving directory '/build/reproducible-path/camlp5-8.03.01/ocaml_src/lib'
 make[4]: Entering directory '/build/reproducible-path/camlp5-8.03.01/lib'
 rm -f *.cm[ioax] *.cmxa *.pp[io] *.[ao] *.obj *.lib *.bak .*.bak
-make[4]: Leaving directory '/build/reproducible-path/camlp5-8.03.01/ocaml_src/odyl'
 rm -f gramlib.cma
-make[4]: Leaving directory '/build/reproducible-path/camlp5-8.03.01/lib'
-make[4]: Entering directory '/build/reproducible-path/camlp5-8.03.01/ocaml_src/main'
+make[4]: Entering directory '/build/reproducible-path/camlp5-8.03.01/ocaml_src/odyl'
 rm -f *.cm* *.pp[io] *.[ao] *.obj *.lib *.bak .*.bak *.out *.opt
+make[4]: Leaving directory '/build/reproducible-path/camlp5-8.03.01/lib'
+rm -f odyl_config.ml odyl
+make[4]: Leaving directory '/build/reproducible-path/camlp5-8.03.01/ocaml_src/odyl'
 make[4]: Entering directory '/build/reproducible-path/camlp5-8.03.01/odyl'
 rm -f *.cm* *.pp[io] *.[ao] *.obj *.lib *.bak .*.bak *.out *.opt
-rm -f camlp5
-make[4]: Leaving directory '/build/reproducible-path/camlp5-8.03.01/ocaml_src/main'
 rm -f odyl_config.ml odyl
+make[4]: Entering directory '/build/reproducible-path/camlp5-8.03.01/ocaml_src/main'
+rm -f *.cm* *.pp[io] *.[ao] *.obj *.lib *.bak .*.bak *.out *.opt
 make[4]: Leaving directory '/build/reproducible-path/camlp5-8.03.01/odyl'
-make[4]: Entering directory '/build/reproducible-path/camlp5-8.03.01/ocaml_src/meta'
-rm -f *.cm* *.pp[io] *.[ao] *.obj *.lib *.bak .*.bak q_MLast.cmo q_ast_base.cmo q_ast.cmo pa_r.cmo pa_rp.cmo pa_macro.cmo pa_macro_gram.cmo pa_fstream.cmo pa_extend.cmo pa_extend_m.cmo pr_dump.cmo pa_lexer.cmo camlp5r q_MLast.cmx q_ast_base.cmx q_ast.cmx pa_r.cmx pa_rp.cmx pa_macro.cmx pa_macro_gram.cmx pa_fstream.cmx pa_extend.cmx pa_extend_m.cmx pr_dump.cmx pa_lexer.cmx camlp5r.opt
+rm -f camlp5
+make[4]: Leaving directory '/build/reproducible-path/camlp5-8.03.01/ocaml_src/main'
 make[4]: Entering directory '/build/reproducible-path/camlp5-8.03.01/main'
 rm -f *.cm* *.pp[io] *.[ao] *.obj *.lib *.bak .*.bak *.out *.opt
-make[4]: Leaving directory '/build/reproducible-path/camlp5-8.03.01/ocaml_src/meta'
 rm -f camlp5
+make[4]: Entering directory '/build/reproducible-path/camlp5-8.03.01/ocaml_src/meta'
+rm -f *.cm* *.pp[io] *.[ao] *.obj *.lib *.bak .*.bak q_MLast.cmo q_ast_base.cmo q_ast.cmo pa_r.cmo pa_rp.cmo pa_macro.cmo pa_macro_gram.cmo pa_fstream.cmo pa_extend.cmo pa_extend_m.cmo pr_dump.cmo pa_lexer.cmo camlp5r q_MLast.cmx q_ast_base.cmx q_ast.cmx pa_r.cmx pa_rp.cmx pa_macro.cmx pa_macro_gram.cmx pa_fstream.cmx pa_extend.cmx pa_extend_m.cmx pr_dump.cmx pa_lexer.cmx camlp5r.opt
 make[4]: Leaving directory '/build/reproducible-path/camlp5-8.03.01/main'
+make[4]: Leaving directory '/build/reproducible-path/camlp5-8.03.01/ocaml_src/meta'
 make[4]: Entering directory '/build/reproducible-path/camlp5-8.03.01/meta'
 rm -f *.cm* *.pp[io] *.[ao] *.obj *.lib *.bak .*.bak q_MLast.cmo q_ast_base.cmo q_ast.cmo pa_r.cmo pa_rp.cmo pa_macro.cmo pa_macro_gram.cmo pa_fstream.cmo pa_extend.cmo pa_extend_m.cmo pr_dump.cmo pa_lexer.cmo camlp5r q_MLast.cmx q_ast_base.cmx q_ast.cmx pa_r.cmx pa_rp.cmx pa_macro.cmx pa_macro_gram.cmx pa_fstream.cmx pa_extend.cmx pa_extend_m.cmx pr_dump.cmx pa_lexer.cmx camlp5r.opt
 make[4]: Leaving directory '/build/reproducible-path/camlp5-8.03.01/meta'
@@ -12623,11 +12659,11 @@
 /usr/share/texlive/texmf-dist/fonts/type1/public/amsfonts/cm/cmti10.pfb></usr/s
 hare/texlive/texmf-dist/fonts/type1/public/amsfonts/cm/cmtt10.pfb></usr/share/t
 exlive/texmf-dist/fonts/type1/public/amsfonts/cm/cmtt9.pfb>
-Output written on camlp5.pdf (260 pages, 653577 bytes).
+Output written on camlp5.pdf (260 pages, 653417 bytes).
 Transcript written on camlp5.log.
 dvips -f- camlp5.dvi > camlp5.ps
 This is dvips(k) 2024.1 (TeX Live 2025/dev)  Copyright 2024 Radical Eye Software (www.radicaleye.com)
-' TeX output 2026.02.19:0526' -> 
+' TeX output 2025.01.16:2311' -> 
 </tmp/texfonts/pk/ljfour/jknappen/ec/tcrm1000.600pk>
 </tmp/texfonts/pk/ljfour/jknappen/ec/tctt1000.600pk>
 </tmp/texfonts/pk/ljfour/jknappen/ec/tctt0900.600pk>
@@ -12808,8 +12844,8 @@
 make[1]: Entering directory '/build/reproducible-path/camlp5-8.03.01'
 dh_ocaml --runtime-map camlp5 \
   --nodefined-map camlp5:Dynlinkaux,Dynlink,Dynlink_compilerlibs,Dynlink_platform_intf,Dynlink_common,Dynlink_types,Dynlink_config,Dynlink_symtable # temporary hack, should be fixed
-W: camlp5 v8.03.01-1 doesn't resolve dependency on unit Main
 W: camlp5 v8.03.01-1 doesn't resolve dependency on unit Argl
+W: camlp5 v8.03.01-1 doesn't resolve dependency on unit Main
 W: camlp5 v8.03.01-1 doesn't resolve dependency on unit Mkcamlp5
 make[1]: Leaving directory '/build/reproducible-path/camlp5-8.03.01'
    dh_gencontrol
@@ -12824,12 +12860,14 @@
 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/10930/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/10930/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/59368 and its subdirectories
-I: Current time: Wed Feb 18 17:27:00 -12 2026
-I: pbuilder-time-stamp: 1771478820
+I: removing directory /srv/workspace/pbuilder/10930 and its subdirectories
+I: Current time: Fri Jan 17 13:11:56 +14 2025
+I: pbuilder-time-stamp: 1737069116