Diff of the two buildlogs:

--
--- b1/build.log	2024-12-09 20:16:53.676318046 +0000
+++ b2/build.log	2024-12-09 20:17:36.042404926 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Jan 11 14:39:17 -12 2026
-I: pbuilder-time-stamp: 1768185557
+I: Current time: Tue Dec 10 10:16:56 +14 2024
+I: pbuilder-time-stamp: 1733775416
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -34,52 +34,84 @@
 dpkg-source: info: applying remove-windows.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3645155/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/2692634/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink04-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  9 20:17 /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/2692634/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/2692634/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]="37" [3]="1" [4]="release" [5]="aarch64-unknown-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=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='366962c96a3b49c3a355d31149206f80'
-  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='3645155'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=b556e0930e584da09f36addfe6ca5907
+  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=2692634
   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.tGHeBLJy/pbuilderrc_uDOC --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.tGHeBLJy/b1 --logfile b1/build.log rust-portable-atomic_1.10.0-3.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.tGHeBLJy/pbuilderrc_renW --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.tGHeBLJy/b2 --logfile b2/build.log rust-portable-atomic_1.10.0-3.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 codethink03-arm64 6.1.0-28-cloud-arm64 #1 SMP Debian 6.1.119-1 (2024-11-22) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-28-cloud-arm64 #1 SMP Debian 6.1.119-1 (2024-11-22) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3645155/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/2692634/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -452,8 +484,8 @@
 Setting up tzdata (2024b-4) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Mon Jan 12 02:39:39 UTC 2026.
-Universal Time is now:  Mon Jan 12 02:39:39 UTC 2026.
+Local time is now:      Mon Dec  9 20:17:18 UTC 2024.
+Universal Time is now:  Mon Dec  9 20:17:18 UTC 2024.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -515,7 +547,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/rust-portable-atomic-1.10.0/ && 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  > ../rust-portable-atomic_1.10.0-3_source.changes
+I: user script /srv/workspace/pbuilder/2692634/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/2692634/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/rust-portable-atomic-1.10.0/ && 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  > ../rust-portable-atomic_1.10.0-3_source.changes
 dpkg-buildpackage: info: source package rust-portable-atomic
 dpkg-buildpackage: info: source version 1.10.0-3
 dpkg-buildpackage: info: source distribution unstable
@@ -557,7 +593,7 @@
 [portable-atomic 1.10.0] cargo:rustc-check-cfg=cfg(portable_atomic_target_feature,values("cmpxchg16b","distinct-ops","experimental-zacas","fast-serialization","load-store-on-cond","lse","lse128","lse2","mclass","miscellaneous-extensions-3","quadword-atomics","rcpc3","v6","zaamo","zabha"))
      Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=portable_atomic CARGO_MANIFEST_DIR=/build/reproducible-path/rust-portable-atomic-1.10.0 CARGO_MANIFEST_PATH=/build/reproducible-path/rust-portable-atomic-1.10.0/Cargo.toml CARGO_PKG_AUTHORS='' CARGO_PKG_DESCRIPTION='Portable atomic types including support for 128-bit atomics, atomic float, etc.
 ' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE='Apache-2.0 OR MIT' CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=portable-atomic CARGO_PKG_README=README.md CARGO_PKG_REPOSITORY='https://github.com/taiki-e/portable-atomic' CARGO_PKG_RUST_VERSION=1.34 CARGO_PKG_VERSION=1.10.0 CARGO_PKG_VERSION_MAJOR=1 CARGO_PKG_VERSION_MINOR=10 CARGO_PKG_VERSION_PATCH=0 CARGO_PKG_VERSION_PRE='' CARGO_PRIMARY_PACKAGE=1 CARGO_RUSTC_CURRENT_DIR=/build/reproducible-path/rust-portable-atomic-1.10.0 LD_LIBRARY_PATH=/build/reproducible-path/rust-portable-atomic-1.10.0/target/debug/deps OUT_DIR=/build/reproducible-path/rust-portable-atomic-1.10.0/target/aarch64-unknown-linux-gnu/debug/build/portable-atomic-ee0d3cbedc3a8aa6/out rustc --crate-name portable_atomic --edition=2018 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=unreachable_pub --warn=unexpected_cfgs '--warn=clippy::undocumented_unsafe_blocks' '--warn=clippy::transmute_undefined_repr' '--warn=clippy::trailing_empty_array' --warn=single_use_lifetimes --warn=rust_2018_idioms '--warn=clippy::pedantic' --warn=non_ascii_idents '--warn=clippy::inline_asm_x86_att_syntax' --warn=improper_ctypes_definitions --warn=improper_ctypes --warn=deprecated_safe '--warn=clippy::default_union_representation' '--warn=clippy::as_underscore' '--warn=clippy::as_ptr_cast_mut' '--warn=clippy::all' '--allow=clippy::unreadable_literal' '--allow=clippy::type_complexity' '--allow=clippy::too_many_lines' '--allow=clippy::too_many_arguments' '--allow=clippy::struct_field_names' '--allow=clippy::struct_excessive_bools' '--allow=clippy::single_match_else' '--allow=clippy::single_match' '--allow=clippy::similar_names' '--allow=clippy::range_plus_one' '--allow=clippy::nonminimal_bool' '--allow=clippy::naive_bytecount' '--allow=clippy::module_name_repetitions' '--allow=clippy::missing_errors_doc' '--allow=clippy::manual_range_contains' '--allow=clippy::manual_assert' '--allow=clippy::lint_groups_priority' '--allow=clippy::incompatible_msrv' '--allow=clippy::float_cmp' '--allow=clippy::doc_markdown' '--allow=clippy::declare_interior_mutable_const' '--allow=clippy::cast_lossless' '--allow=clippy::borrow_as_ptr' '--allow=clippy::bool_assert_comparison' --check-cfg 'cfg(target_arch,values("xtensa"))' --check-cfg 'cfg(target_os,values("psx"))' --check-cfg 'cfg(target_env,values("psx"))' --check-cfg 'cfg(target_feature,values("lse2","lse128","rcpc3"))' --check-cfg 'cfg(target_feature,values("quadword-atomics"))' --check-cfg 'cfg(target_feature,values("zaamo","zabha"))' --check-cfg 'cfg(target_pointer_width,values("128"))' --check-cfg 'cfg(portable_atomic_test_outline_atomics_detect_false,qemu,valgrind)' --check-cfg 'cfg(portable_atomic_no_outline_atomics,portable_atomic_outline_atomics)' --check-cfg 'cfg(portable_atomic_unstable_coerce_unsized)' --cfg 'feature="default"' --cfg 'feature="fallback"' --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values("critical-section", "default", "disable-fiq", "fallback", "float", "force-amo", "require-cas", "s-mode", "serde", "std", "unsafe-assume-single-core"))' -C metadata=d31473c978cd290f -C extra-filename=-d31473c978cd290f --out-dir /build/reproducible-path/rust-portable-atomic-1.10.0/target/aarch64-unknown-linux-gnu/debug/deps --target aarch64-unknown-linux-gnu -C incremental=/build/reproducible-path/rust-portable-atomic-1.10.0/target/aarch64-unknown-linux-gnu/debug/incremental -L dependency=/build/reproducible-path/rust-portable-atomic-1.10.0/target/aarch64-unknown-linux-gnu/debug/deps -L dependency=/build/reproducible-path/rust-portable-atomic-1.10.0/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-portable-atomic-1.10.0=/usr/share/cargo/registry/portable-atomic-1.10.0 --remap-path-prefix /build/reproducible-path/rust-portable-atomic-1.10.0/debian/cargo_registry=/usr/share/cargo/registry --check-cfg 'cfg(target_feature,values("experimental-zacas","fast-serialization","load-store-on-cond","distinct-ops","miscellaneous-extensions-3"))' --check-cfg 'cfg(portable_atomic_disable_fiq,portable_atomic_force_amo,portable_atomic_ll_sc_rmw,portable_atomic_new_atomic_intrinsics,portable_atomic_no_asm,portable_atomic_no_asm_maybe_uninit,portable_atomic_no_atomic_64,portable_atomic_no_atomic_cas,portable_atomic_no_atomic_load_store,portable_atomic_no_atomic_min_max,portable_atomic_no_cfg_target_has_atomic,portable_atomic_no_cmpxchg16b_intrinsic,portable_atomic_no_cmpxchg16b_target_feature,portable_atomic_no_const_mut_refs,portable_atomic_no_const_raw_ptr_deref,portable_atomic_no_const_transmute,portable_atomic_no_core_unwind_safe,portable_atomic_no_diagnostic_namespace,portable_atomic_no_offset_of,portable_atomic_no_stronger_failure_ordering,portable_atomic_no_track_caller,portable_atomic_no_unsafe_op_in_unsafe_fn,portable_atomic_pre_llvm_15,portable_atomic_pre_llvm_16,portable_atomic_pre_llvm_18,portable_atomic_s_mode,portable_atomic_sanitize_thread,portable_atomic_target_feature,portable_atomic_unsafe_assume_single_core,portable_atomic_unstable_asm,portable_atomic_unstable_asm_experimental_arch,portable_atomic_unstable_cfg_target_has_atomic,portable_atomic_unstable_isa_attribute)' --check-cfg 'cfg(portable_atomic_target_feature,values("cmpxchg16b","distinct-ops","experimental-zacas","fast-serialization","load-store-on-cond","lse","lse128","lse2","mclass","miscellaneous-extensions-3","quadword-atomics","rcpc3","v6","zaamo","zabha"))'`
-    Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.38s
+    Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.09s
 rustc 1.83.0+dfsg1-1 1
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=cargo
@@ -588,12 +624,14 @@
 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/2692634/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/2692634/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/3645155 and its subdirectories
-I: Current time: Sun Jan 11 14:39:52 -12 2026
-I: pbuilder-time-stamp: 1768185592
+I: removing directory /srv/workspace/pbuilder/2692634 and its subdirectories
+I: Current time: Tue Dec 10 10:17:35 +14 2024
+I: pbuilder-time-stamp: 1733775455