Diff of the two buildlogs:

--
--- b1/build.log	2025-02-11 02:46:59.269394082 +0000
+++ b2/build.log	2025-02-11 03:34:18.825224136 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Feb 10 13:36:55 -12 2025
-I: pbuilder-time-stamp: 1739237815
+I: Current time: Tue Feb 11 16:49:19 +14 2025
+I: pbuilder-time-stamp: 1739242159
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -30,52 +30,84 @@
 dpkg-source: info: applying 0007-Enable-native-backend-and-dynlink-on-hurd-amd64.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/23126/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/26010/tmp/hooks/D01_modify_environment starting
+debug: Running on virt32c.
+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 Feb 11 02:49 /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/26010/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/26010/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='d283dffb322a4189979793af0c52f8df'
-  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='23126'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=2f59ed1ac33246f9944746de0d4befa8
+  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=26010
   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.ih2DPWtO/pbuilderrc_77mW --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.ih2DPWtO/b1 --logfile b1/build.log ocaml_5.3.0-2.dsc'
-  SUDO_GID='113'
-  SUDO_UID='107'
-  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.ih2DPWtO/pbuilderrc_MIKt --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.ih2DPWtO/b2 --logfile b2/build.log ocaml_5.3.0-2.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 virt64c 6.1.0-31-arm64 #1 SMP Debian 6.1.128-1 (2025-02-07) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-31-armmp-lpae #1 SMP Debian 6.1.128-1 (2025-02-07) 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/23126/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/26010/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -167,7 +199,7 @@
 Get: 39 http://deb.debian.org/debian trixie/main armhf pkgconf-bin armhf 1.8.1-4 [29.2 kB]
 Get: 40 http://deb.debian.org/debian trixie/main armhf pkgconf armhf 1.8.1-4 [26.1 kB]
 Get: 41 http://deb.debian.org/debian trixie/main armhf zlib1g-dev armhf 1:1.3.dfsg+really1.3.1-1+b1 [905 kB]
-Fetched 26.6 MB in 1s (25.9 MB/s)
+Fetched 26.6 MB in 1s (33.7 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package sensible-utils.
 (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 ... 19531 files and directories currently installed.)
@@ -346,7 +378,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/ocaml-5.3.0/ && 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  > ../ocaml_5.3.0-2_source.changes
+I: user script /srv/workspace/pbuilder/26010/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/26010/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/ocaml-5.3.0/ && 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  > ../ocaml_5.3.0-2_source.changes
 dpkg-buildpackage: info: source package ocaml
 dpkg-buildpackage: info: source version 5.3.0-2
 dpkg-buildpackage: info: source distribution unstable
@@ -412,7 +448,7 @@
 touch pre-config-stamp
 ./configure --enable-ocamltest --host arm-linux-gnueabihf -prefix /usr -libdir /usr/lib/arm-linux-gnueabihf/ocaml/5.3.0 -mandir /usr/share/man  --disable-native-compiler
 configure: Configuring OCaml version 5.3.0
-checking build system type... aarch64-unknown-linux-gnu
+checking build system type... armv7l-unknown-linux-gnueabihf
 checking host system type... arm-unknown-linux-gnueabihf
 checking target system type... arm-unknown-linux-gnueabihf
 checking for csc... no
@@ -437,8 +473,8 @@
 checking the name lister (/usr/bin/arm-linux-gnueabihf-nm -B) interface... BSD nm
 checking whether ln -s works... yes
 checking the maximum length of command line arguments... 1572864
-checking how to convert aarch64-unknown-linux-gnu file names to arm-unknown-linux-gnueabihf format... func_convert_file_noop
-checking how to convert aarch64-unknown-linux-gnu file names to toolchain format... func_convert_file_noop
+checking how to convert armv7l-unknown-linux-gnueabihf file names to arm-unknown-linux-gnueabihf format... func_convert_file_noop
+checking how to convert armv7l-unknown-linux-gnueabihf file names to toolchain format... func_convert_file_noop
 checking for arm-linux-gnueabihf-ld option to reload object files... -r
 checking for arm-linux-gnueabihf-objdump... arm-linux-gnueabihf-objdump
 checking how to recognize dependent libraries... pass_all
@@ -4635,12 +4671,12 @@
    dh_makeshlibs -a
    dh_shlibdeps -a
 dpkg-shlibdeps: warning: diversions involved - output may be incorrect
-dpkg-shlibdeps: warning: diversions involved - output may be incorrect
- diversion by libc6 from: /lib/ld-linux-armhf.so.3
  diversion by libc6 from: /lib/ld-linux-armhf.so.3
 dpkg-shlibdeps: warning: diversions involved - output may be incorrect
-dpkg-shlibdeps: warning: diversions involved - output may be incorrect
  diversion by libc6 to: /lib/ld-linux-armhf.so.3.usr-is-merged
+dpkg-shlibdeps: warning: diversions involved - output may be incorrect
+ diversion by libc6 from: /lib/ld-linux-armhf.so.3
+dpkg-shlibdeps: warning: diversions involved - output may be incorrect
  diversion by libc6 to: /lib/ld-linux-armhf.so.3.usr-is-merged
    dh_installdeb
    debian/rules override_dh_gencontrol
@@ -4652,40 +4688,40 @@
 dh_ocaml
 W: libstdlib-ocaml-dev/libstdlib-ocaml v5.3.0-2 doesn't resolve dependency on unit Dynlink_cmo_format
 W: libcompiler-libs-ocaml-dev v5.3.0-2 doesn't resolve dependency on unit Simplify_boxed_integer_ops_intf
-W: libcompiler-libs-ocaml-dev v5.3.0-2 doesn't resolve dependency on unit Backend_intf
 W: libcompiler-libs-ocaml-dev v5.3.0-2 doesn't resolve dependency on unit Inlining_decision_intf
+W: libcompiler-libs-ocaml-dev v5.3.0-2 doesn't resolve dependency on unit Backend_intf
 W: ocaml doesn't resolve dependency on unit Ocamlmktop
+W: ocaml doesn't resolve dependency on unit Dumpobj
+W: ocaml doesn't resolve dependency on unit Opnames
+W: ocaml doesn't resolve dependency on unit Objinfo
 W: ocaml doesn't resolve dependency on unit Ocamldep
+W: ocaml doesn't resolve dependency on unit Parser_aux
+W: ocaml doesn't resolve dependency on unit Dynlink_cmo_format
+W: ocaml doesn't resolve dependency on unit Cset
+W: ocaml doesn't resolve dependency on unit Syntax
 W: ocaml doesn't resolve dependency on unit Main
-W: ocaml doesn't resolve dependency on unit Dumpobj
 W: ocaml doesn't resolve dependency on unit Ocamlmklib
-W: ocaml doesn't resolve dependency on unit Ocamldebug_entry
-W: ocaml doesn't resolve dependency on unit Syntax
-W: ocaml doesn't resolve dependency on unit Parser
-W: ocaml doesn't resolve dependency on unit Compact
-W: ocaml doesn't resolve dependency on unit Table
 W: ocaml doesn't resolve dependency on unit Ocamldebug
-W: ocaml doesn't resolve dependency on unit Ocamlcp
-W: ocaml doesn't resolve dependency on unit Cset
 W: ocaml doesn't resolve dependency on unit Ocamlprof
-W: ocaml doesn't resolve dependency on unit Lexgen
-W: ocaml doesn't resolve dependency on unit Lexer
-W: ocaml doesn't resolve dependency on unit Output
-W: ocaml doesn't resolve dependency on unit Objinfo
+W: ocaml doesn't resolve dependency on unit Outputbis
 W: ocaml doesn't resolve dependency on unit Ocamlcmt
-W: ocaml doesn't resolve dependency on unit Opnames
-W: ocaml doesn't resolve dependency on unit Ocamlcp_common
-W: ocaml doesn't resolve dependency on unit Dynlink_cmo_format
-W: ocaml doesn't resolve dependency on unit Parser_aux
+W: ocaml doesn't resolve dependency on unit Compact
+W: ocaml doesn't resolve dependency on unit Table
 W: ocaml doesn't resolve dependency on unit Common
-W: ocaml doesn't resolve dependency on unit Outputbis
+W: ocaml doesn't resolve dependency on unit Output
+W: ocaml doesn't resolve dependency on unit Lexgen
+W: ocaml doesn't resolve dependency on unit Ocamlcp
+W: ocaml doesn't resolve dependency on unit Parser
+W: ocaml doesn't resolve dependency on unit Ocamlcp_common
+W: ocaml doesn't resolve dependency on unit Lexer
+W: ocaml doesn't resolve dependency on unit Ocamldebug_entry
 dh_gencontrol
-dpkg-gencontrol: warning: Depends field of package libcompiler-libs-ocaml-dev: substitution variable ${shlibs:Depends} used, but is not defined
+dpkg-gencontrol: warning: Depends field of package libstdlib-ocaml: substitution variable ${ocaml:Depends} used, but is not defined
 dpkg-gencontrol: warning: Depends field of package ocaml-base: substitution variable ${ocaml:Depends} used, but is not defined
 dpkg-gencontrol: warning: Depends field of package ocaml-base: substitution variable ${ocaml:Depends} used, but is not defined
-dpkg-gencontrol: warning: Depends field of package libstdlib-ocaml-dev: substitution variable ${shlibs:Depends} used, but is not defined
-dpkg-gencontrol: warning: Depends field of package libstdlib-ocaml: substitution variable ${ocaml:Depends} used, but is not defined
 dpkg-gencontrol: warning: Depends field of package libstdlib-ocaml: substitution variable ${ocaml:Depends} used, but is not defined
+dpkg-gencontrol: warning: Depends field of package libcompiler-libs-ocaml-dev: substitution variable ${shlibs:Depends} used, but is not defined
+dpkg-gencontrol: warning: Depends field of package libstdlib-ocaml-dev: substitution variable ${shlibs:Depends} used, but is not defined
 if [ "5.3.0" != "5.3.0" ]; then \
   echo "Please adjust OCAML_ABI in debian/rules"; \
   exit 2; \
@@ -4694,19 +4730,19 @@
    dh_md5sums
    dh_builddeb
 dpkg-deb: building package 'ocaml-base' in '../ocaml-base_5.3.0-2_armhf.deb'.
-dpkg-deb: building package 'ocaml-man' in '../ocaml-man_5.3.0-2_all.deb'.
-dpkg-deb: building package 'libstdlib-ocaml' in '../libstdlib-ocaml_5.3.0-2_armhf.deb'.
-dpkg-deb: building package 'libstdlib-ocaml-dbgsym' in '../libstdlib-ocaml-dbgsym_5.3.0-2_armhf.deb'.
-dpkg-deb: building package 'ocaml-base-nox' in '../ocaml-base-nox_5.3.0-2_all.deb'.
-dpkg-deb: building package 'ocaml-base-dbgsym' in '../ocaml-base-dbgsym_5.3.0-2_armhf.deb'.
+dpkg-deb: building package 'libstdlib-ocaml-dev' in '../libstdlib-ocaml-dev_5.3.0-2_armhf.deb'.
 dpkg-deb: building package 'ocaml-nox' in '../ocaml-nox_5.3.0-2_all.deb'.
+dpkg-deb: building package 'ocaml-source' in '../ocaml-source_5.3.0-2_all.deb'.
 dpkg-deb: building package 'ocaml-compiler-libs' in '../ocaml-compiler-libs_5.3.0-2_all.deb'.
-dpkg-deb: building package 'libcompiler-libs-ocaml-dev' in '../libcompiler-libs-ocaml-dev_5.3.0-2_armhf.deb'.
+dpkg-deb: building package 'ocaml-base-dbgsym' in '../ocaml-base-dbgsym_5.3.0-2_armhf.deb'.
 dpkg-deb: building package 'ocaml' in '../ocaml_5.3.0-2_armhf.deb'.
-dpkg-deb: building package 'ocaml-source' in '../ocaml-source_5.3.0-2_all.deb'.
-dpkg-deb: building package 'ocaml-dbgsym' in '../ocaml-dbgsym_5.3.0-2_armhf.deb'.
-dpkg-deb: building package 'libstdlib-ocaml-dev' in '../libstdlib-ocaml-dev_5.3.0-2_armhf.deb'.
 dpkg-deb: building package 'ocaml-interp' in '../ocaml-interp_5.3.0-2_armhf.deb'.
+dpkg-deb: building package 'libstdlib-ocaml' in '../libstdlib-ocaml_5.3.0-2_armhf.deb'.
+dpkg-deb: building package 'libstdlib-ocaml-dbgsym' in '../libstdlib-ocaml-dbgsym_5.3.0-2_armhf.deb'.
+dpkg-deb: building package 'libcompiler-libs-ocaml-dev' in '../libcompiler-libs-ocaml-dev_5.3.0-2_armhf.deb'.
+dpkg-deb: building package 'ocaml-dbgsym' in '../ocaml-dbgsym_5.3.0-2_armhf.deb'.
+dpkg-deb: building package 'ocaml-man' in '../ocaml-man_5.3.0-2_all.deb'.
+dpkg-deb: building package 'ocaml-base-nox' in '../ocaml-base-nox_5.3.0-2_all.deb'.
  dpkg-genbuildinfo --build=binary -O../ocaml_5.3.0-2_armhf.buildinfo
  dpkg-genchanges --build=binary -O../ocaml_5.3.0-2_armhf.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -4714,12 +4750,14 @@
 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/26010/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/26010/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/23126 and its subdirectories
-I: Current time: Mon Feb 10 14:46:55 -12 2025
-I: pbuilder-time-stamp: 1739242015
+I: removing directory /srv/workspace/pbuilder/26010 and its subdirectories
+I: Current time: Tue Feb 11 17:34:13 +14 2025
+I: pbuilder-time-stamp: 1739244853