Diff of the two buildlogs:

--
--- b1/build.log	2024-05-17 18:42:14.293939876 +0000
+++ b2/build.log	2024-05-17 18:43:29.718730775 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Fri May 17 06:40:46 -12 2024
-I: pbuilder-time-stamp: 1715971246
+I: Current time: Fri Jun 20 15:05:17 +14 2025
+I: pbuilder-time-stamp: 1750381517
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -25,52 +25,84 @@
 dpkg-source: info: unpacking rust-enum-dispatch_0.3.12-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3259245/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/2942097/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink03-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 Jun 20 01:05 /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/2942097/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/2942097/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]="21" [3]="1" [4]="release" [5]="aarch64-unknown-linux-gnu")
+  BASH_VERSION='5.2.21(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='3e247d4dae7d4ce781bd9854f9147172'
-  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='3259245'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=724e739f6b4f4c87a808db5410d0fa6a
+  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=2942097
   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.h0PwHgHT/pbuilderrc_CI2R --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.h0PwHgHT/b1 --logfile b1/build.log rust-enum-dispatch_0.3.12-1.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.h0PwHgHT/pbuilderrc_Zbx2 --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.h0PwHgHT/b2 --logfile b2/build.log rust-enum-dispatch_0.3.12-1.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 6.1.0-21-cloud-arm64 #1 SMP Debian 6.1.90-1 (2024-05-03) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-21-cloud-arm64 #1 SMP Debian 6.1.90-1 (2024-05-03) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 May 17 07:42 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3259245/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Jun 19 14:05 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/2942097/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -209,7 +241,7 @@
 Get: 85 http://deb.debian.org/debian unstable/main arm64 librust-parking-lot-core-dev arm64 0.9.9-1+b1 [32.4 kB]
 Get: 86 http://deb.debian.org/debian unstable/main arm64 librust-portable-atomic-dev arm64 1.4.3-2+b1 [105 kB]
 Get: 87 http://deb.debian.org/debian unstable/main arm64 librust-once-cell-dev arm64 1.19.0-1 [34.1 kB]
-Fetched 115 MB in 2s (55.0 MB/s)
+Fetched 115 MB in 2s (74.8 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libpython3.11-minimal:arm64.
 (Reading database ... 
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(Reading database ... 100%
(Reading database ... 19764 files and directories currently installed.)
@@ -507,8 +539,8 @@
 Setting up tzdata (2024a-4) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Fri May 17 18:41:26 UTC 2024.
-Universal Time is now:  Fri May 17 18:41:26 UTC 2024.
+Local time is now:      Fri Jun 20 01:05:52 UTC 2025.
+Universal Time is now:  Fri Jun 20 01:05:52 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -584,7 +616,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/rust-enum-dispatch-0.3.12/ && 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-enum-dispatch_0.3.12-1_source.changes
+I: user script /srv/workspace/pbuilder/2942097/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/2942097/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/rust-enum-dispatch-0.3.12/ && 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-enum-dispatch_0.3.12-1_source.changes
 dpkg-buildpackage: info: source package rust-enum-dispatch
 dpkg-buildpackage: info: source version 0.3.12-1
 dpkg-buildpackage: info: source distribution unstable
@@ -631,7 +667,7 @@
      Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=syn CARGO_MANIFEST_DIR=/build/reproducible-path/rust-enum-dispatch-0.3.12/debian/cargo_registry/syn-2.0.48 CARGO_PKG_AUTHORS='David Tolnay <dtolnay@gmail.com>' CARGO_PKG_DESCRIPTION='Parser for Rust source code' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE='MIT OR Apache-2.0' CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=syn CARGO_PKG_README=README.md CARGO_PKG_REPOSITORY='https://github.com/dtolnay/syn' CARGO_PKG_RUST_VERSION=1.56 CARGO_PKG_VERSION=2.0.48 CARGO_PKG_VERSION_MAJOR=2 CARGO_PKG_VERSION_MINOR=0 CARGO_PKG_VERSION_PATCH=48 CARGO_PKG_VERSION_PRE='' LD_LIBRARY_PATH='/build/reproducible-path/rust-enum-dispatch-0.3.12/target/debug/deps:/usr/lib' rustc --crate-name syn --edition=2021 /build/reproducible-path/rust-enum-dispatch-0.3.12/debian/cargo_registry/syn-2.0.48/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 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' -C metadata=9b0f5948c3c6c0a5 -C extra-filename=-9b0f5948c3c6c0a5 --out-dir /build/reproducible-path/rust-enum-dispatch-0.3.12/target/debug/deps -L dependency=/build/reproducible-path/rust-enum-dispatch-0.3.12/target/debug/deps --extern proc_macro2=/build/reproducible-path/rust-enum-dispatch-0.3.12/target/debug/deps/libproc_macro2-72ad5ff6e0e6c9cc.rmeta --extern quote=/build/reproducible-path/rust-enum-dispatch-0.3.12/target/debug/deps/libquote-a335dba09b160ee7.rmeta --extern unicode_ident=/build/reproducible-path/rust-enum-dispatch-0.3.12/target/debug/deps/libunicode_ident-b7751ebed82668c0.rmeta --cap-lints warn`
    Compiling enum_dispatch v0.3.12 (/build/reproducible-path/rust-enum-dispatch-0.3.12)
      Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=enum_dispatch CARGO_MANIFEST_DIR=/build/reproducible-path/rust-enum-dispatch-0.3.12 CARGO_PKG_AUTHORS='Anton Lazarev <https://antonok.com>' CARGO_PKG_DESCRIPTION='Near drop-in replacement for dynamic-dispatched method calls with up to 10x the speed' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE='MIT OR Apache-2.0' CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=enum_dispatch CARGO_PKG_README=README.md CARGO_PKG_REPOSITORY='https://gitlab.com/antonok/enum_dispatch' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=0.3.12 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=3 CARGO_PKG_VERSION_PATCH=12 CARGO_PKG_VERSION_PRE='' CARGO_PRIMARY_PACKAGE=1 LD_LIBRARY_PATH='/build/reproducible-path/rust-enum-dispatch-0.3.12/target/debug/deps:/usr/lib' rustc --crate-name enum_dispatch --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 -C metadata=f16badd5d49bc6fa -C extra-filename=-f16badd5d49bc6fa --out-dir /build/reproducible-path/rust-enum-dispatch-0.3.12/target/debug/deps -C incremental=/build/reproducible-path/rust-enum-dispatch-0.3.12/target/debug/incremental -L dependency=/build/reproducible-path/rust-enum-dispatch-0.3.12/target/debug/deps --extern once_cell=/build/reproducible-path/rust-enum-dispatch-0.3.12/target/debug/deps/libonce_cell-5db3b73a5c8774a9.rlib --extern proc_macro2=/build/reproducible-path/rust-enum-dispatch-0.3.12/target/debug/deps/libproc_macro2-72ad5ff6e0e6c9cc.rlib --extern quote=/build/reproducible-path/rust-enum-dispatch-0.3.12/target/debug/deps/libquote-a335dba09b160ee7.rlib --extern syn=/build/reproducible-path/rust-enum-dispatch-0.3.12/target/debug/deps/libsyn-9b0f5948c3c6c0a5.rlib --extern proc_macro`
-    Finished dev [unoptimized + debuginfo] target(s) in 32.22s
+    Finished dev [unoptimized + debuginfo] target(s) in 19.25s
 cat: 'target/aarch64-unknown-linux-gnu/debug/deps/*.d': No such file or directory
 rustc 1.71.1+dfsg1-2 1
    create-stamp debian/debhelper-build-stamp
@@ -664,12 +700,14 @@
 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/2942097/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/2942097/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/3259245 and its subdirectories
-I: Current time: Fri May 17 06:42:12 -12 2024
-I: pbuilder-time-stamp: 1715971332
+I: removing directory /srv/workspace/pbuilder/2942097 and its subdirectories
+I: Current time: Fri Jun 20 15:06:28 +14 2025
+I: pbuilder-time-stamp: 1750381588