Diff of the two buildlogs:

--
--- b1/build.log	2024-11-12 23:57:52.204555399 +0000
+++ b2/build.log	2024-11-12 23:59:02.498053703 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Tue Nov 12 11:57:21 -12 2024
-I: pbuilder-time-stamp: 1731455841
+I: Current time: Tue Dec 16 20:20:55 +14 2025
+I: pbuilder-time-stamp: 1765866055
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -26,52 +26,84 @@
 dpkg-source: info: unpacking rust-clap-lex_0.7.2-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/2072132/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/3012132/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink01-arm64.
+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 16 06:21 /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/3012132/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/3012132/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='arm64'
-  DEBIAN_FRONTEND='noninteractive'
+  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]="32" [3]="1" [4]="release" [5]="aarch64-unknown-linux-gnu")
+  BASH_VERSION='5.2.32(1)-release'
+  BUILDDIR=/build/reproducible-path
+  BUILDUSERGECOS='second user,second room,second work-phone,second home-phone,second other'
+  BUILDUSERNAME=pbuilder2
+  BUILD_ARCH=arm64
+  DEBIAN_FRONTEND=noninteractive
   DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=12 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  INVOCATION_ID='0e237504d886461bb692d4b4f7803718'
-  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='2072132'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=9184692a93d24304b7c1101c8fd06e9e
+  LANG=C
+  LANGUAGE=nl_BE:nl
+  LC_ALL=C
+  MACHTYPE=aarch64-unknown-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=3012132
   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.o8ChXxbH/pbuilderrc_rc7w --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.o8ChXxbH/b1 --logfile b1/build.log rust-clap-lex_0.7.2-2.dsc'
-  SUDO_GID='109'
-  SUDO_UID='104'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://192.168.101.4:3128'
+  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.o8ChXxbH/pbuilderrc_gTzW --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.o8ChXxbH/b2 --logfile b2/build.log rust-clap-lex_0.7.2-2.dsc'
+  SUDO_GID=109
+  SUDO_UID=104
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://192.168.101.4:3128
 I: uname -a
-  Linux codethink02-arm64 6.1.0-27-cloud-arm64 #1 SMP Debian 6.1.115-1 (2024-11-01) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-27-cloud-arm64 #1 SMP Debian 6.1.115-1 (2024-11-01) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Aug  4 21:30 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/2072132/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Aug  4  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/3012132/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -186,7 +218,7 @@
 Get: 71 http://deb.debian.org/debian unstable/main arm64 po-debconf all 1.0.21+nmu1 [248 kB]
 Get: 72 http://deb.debian.org/debian unstable/main arm64 debhelper all 13.20 [915 kB]
 Get: 73 http://deb.debian.org/debian unstable/main arm64 dh-cargo all 31 [10.3 kB]
-Fetched 124 MB in 1s (220 MB/s)
+Fetched 124 MB in 1s (106 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libpython3.12-minimal:arm64.
 (Reading database ... 
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(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 20088 files and directories currently installed.)
@@ -445,8 +477,8 @@
 Setting up tzdata (2024b-3) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Tue Nov 12 23:57:41 UTC 2024.
-Universal Time is now:  Tue Nov 12 23:57:41 UTC 2024.
+Local time is now:      Tue Dec 16 06:21:35 UTC 2025.
+Universal Time is now:  Tue Dec 16 06:21:35 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -507,7 +539,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/rust-clap-lex-0.7.2/ && 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  > ../rust-clap-lex_0.7.2-2_source.changes
+I: user script /srv/workspace/pbuilder/3012132/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/3012132/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/rust-clap-lex-0.7.2/ && 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  > ../rust-clap-lex_0.7.2-2_source.changes
 dpkg-buildpackage: info: source package rust-clap-lex
 dpkg-buildpackage: info: source version 0.7.2-2
 dpkg-buildpackage: info: source distribution unstable
@@ -538,7 +574,7 @@
 debian cargo wrapper: running subprocess (['env', 'RUST_BACKTRACE=1', '/usr/bin/cargo', '-Zavoid-dev-deps', 'build', '--verbose', '--verbose', '-j12', '--target', 'aarch64-unknown-linux-gnu'],) {}
    Compiling clap_lex v0.7.2 (/build/reproducible-path/rust-clap-lex-0.7.2)
      Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=clap_lex CARGO_MANIFEST_DIR=/build/reproducible-path/rust-clap-lex-0.7.2 CARGO_PKG_AUTHORS='' CARGO_PKG_DESCRIPTION='Minimal, flexible command line parser' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE='MIT OR Apache-2.0' CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=clap_lex CARGO_PKG_README=README.md CARGO_PKG_REPOSITORY='https://github.com/clap-rs/clap' CARGO_PKG_RUST_VERSION=1.74 CARGO_PKG_VERSION=0.7.2 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=7 CARGO_PKG_VERSION_PATCH=2 CARGO_PKG_VERSION_PRE='' CARGO_PRIMARY_PACKAGE=1 CARGO_RUSTC_CURRENT_DIR=/build/reproducible-path/rust-clap-lex-0.7.2 LD_LIBRARY_PATH=/build/reproducible-path/rust-clap-lex-0.7.2/target/debug/deps rustc --crate-name clap_lex --edition=2021 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 '--warn=clippy::zero_sized_map_values' '--warn=clippy::verbose_file_reads' --warn=unused_qualifications --warn=unused_macro_rules --warn=unused_lifetimes --warn=unsafe_op_in_unsafe_fn --warn=unreachable_pub '--warn=clippy::trait_duplication_in_bounds' '--warn=clippy::todo' '--warn=clippy::string_lit_as_bytes' '--warn=clippy::string_add_assign' '--warn=clippy::semicolon_if_nothing_returned' '--warn=clippy::self_named_module_files' '--warn=clippy::same_functions_in_if_condition' --warn=rust_2018_idioms '--warn=clippy::rest_pat_in_fully_bound_structs' '--warn=clippy::ref_option_ref' '--warn=clippy::redundant_feature_names' '--warn=clippy::rc_mutex' '--warn=clippy::ptr_as_ptr' '--warn=clippy::path_buf_push_overwrite' '--warn=clippy::negative_feature_names' '--warn=clippy::needless_for_each' '--warn=clippy::needless_continue' '--warn=clippy::mutex_integer' '--allow=clippy::multiple_bound_locations' '--warn=clippy::mem_forget' '--warn=clippy::match_wildcard_for_single_variants' '--warn=clippy::macro_use_imports' '--warn=clippy::lossy_float_literal' '--warn=clippy::linkedlist' '--allow=clippy::let_and_return' '--warn=clippy::large_types_passed_by_value' '--warn=clippy::large_stack_arrays' '--warn=clippy::large_digit_groups' '--warn=clippy::invalid_upcast_comparisons' '--warn=clippy::infinite_loop' '--warn=clippy::inefficient_to_string' '--warn=clippy::inconsistent_struct_constructor' '--warn=clippy::imprecise_flops' '--warn=clippy::implicit_clone' '--allow=clippy::if_same_then_else' '--warn=clippy::from_iter_instead_of_collect' '--warn=clippy::fn_params_excessive_bools' '--warn=clippy::float_cmp_const' '--warn=clippy::flat_map_option' '--warn=clippy::filter_map_next' '--warn=clippy::fallible_impl_from' '--warn=clippy::explicit_into_iter_loop' '--warn=clippy::explicit_deref_methods' '--warn=clippy::expl_impl_clone_on_copy' '--warn=clippy::enum_glob_use' '--warn=clippy::empty_enum' '--warn=clippy::doc_markdown' '--warn=clippy::debug_assert_with_mut_call' '--warn=clippy::dbg_macro' '--warn=clippy::create_dir' '--allow=clippy::collapsible_else_if' '--warn=clippy::checked_conversions' '--allow=clippy::branches_sharing_code' '--allow=clippy::bool_assert_comparison' '--allow=clippy::blocks_in_conditions' '--allow=clippy::assigning_clones' --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values())' -C metadata=51255c2bbf4d3c04 -C extra-filename=-51255c2bbf4d3c04 --out-dir /build/reproducible-path/rust-clap-lex-0.7.2/target/aarch64-unknown-linux-gnu/debug/deps --target aarch64-unknown-linux-gnu -C incremental=/build/reproducible-path/rust-clap-lex-0.7.2/target/aarch64-unknown-linux-gnu/debug/incremental -L dependency=/build/reproducible-path/rust-clap-lex-0.7.2/target/aarch64-unknown-linux-gnu/debug/deps -L dependency=/build/reproducible-path/rust-clap-lex-0.7.2/target/debug/deps -C debuginfo=2 -C strip=none --cap-lints warn -C linker=aarch64-linux-gnu-gcc -C link-arg=-Wl,-z,relro --remap-path-prefix /build/reproducible-path/rust-clap-lex-0.7.2=/usr/share/cargo/registry/clap-lex-0.7.2 --remap-path-prefix /build/reproducible-path/rust-clap-lex-0.7.2/debian/cargo_registry=/usr/share/cargo/registry`
-    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.78s
+    Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.80s
 rustc 1.82.0+dfsg1-2 1
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=cargo
@@ -570,12 +606,14 @@
 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/3012132/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/3012132/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/2072132 and its subdirectories
-I: Current time: Tue Nov 12 11:57:51 -12 2024
-I: pbuilder-time-stamp: 1731455871
+I: removing directory /srv/workspace/pbuilder/3012132 and its subdirectories
+I: Current time: Tue Dec 16 20:22:01 +14 2025
+I: pbuilder-time-stamp: 1765866121