Diff of the two buildlogs:

--
--- b1/build.log	2025-03-20 00:35:34.333758651 +0000
+++ b2/build.log	2025-03-20 00:36:28.003325697 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Tue Apr 21 18:57:38 -12 2026
-I: pbuilder-time-stamp: 1776841058
+I: Current time: Thu Mar 20 14:35:36 +14 2025
+I: pbuilder-time-stamp: 1742430936
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -22,51 +22,83 @@
 dpkg-source: info: unpacking rust-libdisplay-info-derive_0.1.0-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3404593/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/1968220/tmp/hooks/D01_modify_environment starting
+debug: Running on infom01-amd64.
+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 Mar 20 00:35 /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/1968220/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/1968220/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='amd64'
-  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]="x86_64-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=amd64
+  DEBIAN_FRONTEND=noninteractive
   DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=12 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='amd64'
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='2beb523e768649aa8d1954ebb146dc87'
-  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='3404593'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=7313441427614c129eb99c13ca73b17f
+  LANG=C
+  LANGUAGE=et_EE:et
+  LC_ALL=C
+  MACHTYPE=x86_64-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=1968220
   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.EolQAiyA/pbuilderrc_MlHm --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.EolQAiyA/b1 --logfile b1/build.log rust-libdisplay-info-derive_0.1.0-1.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'
+  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.EolQAiyA/pbuilderrc_6wDU --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.EolQAiyA/b2 --logfile b2/build.log rust-libdisplay-info-derive_0.1.0-1.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'
 I: uname -a
-  Linux infom02-amd64 6.12.12+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.12-1~bpo12+1 (2025-02-23) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-32-cloud-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.129-1 (2025-03-06) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3404593/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4 11:20 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/1968220/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -195,7 +227,7 @@
 Get: 79 http://deb.debian.org/debian unstable/main amd64 librust-proc-macro2-dev amd64 1.0.92-1+b1 [45.6 kB]
 Get: 80 http://deb.debian.org/debian unstable/main amd64 librust-quote-dev amd64 1.0.37-1 [28.9 kB]
 Get: 81 http://deb.debian.org/debian unstable/main amd64 librust-syn-dev amd64 2.0.96-2 [228 kB]
-Fetched 137 MB in 2s (79.4 MB/s)
+Fetched 137 MB in 1s (141 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-minimal:amd64.
 (Reading database ... 
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(Reading database ... 100%
(Reading database ... 19784 files and directories currently installed.)
@@ -472,8 +504,8 @@
 Setting up tzdata (2025a-2) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Wed Apr 22 06:58:16 UTC 2026.
-Universal Time is now:  Wed Apr 22 06:58:16 UTC 2026.
+Local time is now:      Thu Mar 20 00:36:11 UTC 2025.
+Universal Time is now:  Thu Mar 20 00:36:11 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -546,7 +578,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/rust-libdisplay-info-derive-0.1.0/ && 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-libdisplay-info-derive_0.1.0-1_source.changes
+I: user script /srv/workspace/pbuilder/1968220/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/1968220/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/rust-libdisplay-info-derive-0.1.0/ && 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-libdisplay-info-derive_0.1.0-1_source.changes
 dpkg-buildpackage: info: source package rust-libdisplay-info-derive
 dpkg-buildpackage: info: source version 0.1.0-1
 dpkg-buildpackage: info: source distribution unstable
@@ -606,7 +642,7 @@
    Compiling libdisplay-info-derive v0.1.0 (/build/reproducible-path/rust-libdisplay-info-derive-0.1.0)
      Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=libdisplay_info_derive CARGO_MANIFEST_DIR=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0 CARGO_MANIFEST_PATH=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/Cargo.toml CARGO_PKG_AUTHORS='Christian Meissl <meissl.christian@gmail.com>' CARGO_PKG_DESCRIPTION='Utility crate for managing FFI bindings in libdisplay-info.' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE=MIT CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=libdisplay-info-derive CARGO_PKG_README='' CARGO_PKG_REPOSITORY='https://github.com/Smithay/libdisplay-info-rs' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=0.1.0 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=1 CARGO_PKG_VERSION_PATCH=0 CARGO_PKG_VERSION_PRE='' CARGO_PRIMARY_PACKAGE=1 LD_LIBRARY_PATH=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/deps rustc --crate-name libdisplay_info_derive --edition=2021 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 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=b05cce0a2066ceca -C extra-filename=-5db7f32a02fca8b3 --out-dir /build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/deps -C incremental=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/incremental -L dependency=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/deps --extern proc_macro2=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/deps/libproc_macro2-3101b0ad76b98c0c.rlib --extern quote=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/deps/libquote-3d128417f373fb73.rlib --extern syn=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/deps/libsyn-e7b6fb8aa8bc6675.rlib --extern proc_macro`
      Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=libdisplay_info_derive CARGO_MANIFEST_DIR=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0 CARGO_MANIFEST_PATH=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/Cargo.toml CARGO_PKG_AUTHORS='Christian Meissl <meissl.christian@gmail.com>' CARGO_PKG_DESCRIPTION='Utility crate for managing FFI bindings in libdisplay-info.' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE=MIT CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=libdisplay-info-derive CARGO_PKG_README='' CARGO_PKG_REPOSITORY='https://github.com/Smithay/libdisplay-info-rs' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=0.1.0 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=1 CARGO_PKG_VERSION_PATCH=0 CARGO_PKG_VERSION_PRE='' CARGO_PRIMARY_PACKAGE=1 LD_LIBRARY_PATH=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/deps rustc --crate-name libdisplay_info_derive --edition=2021 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 --test --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=e1bad3b5591b4c4a -C extra-filename=-cac4cee5a2b2b165 --out-dir /build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/deps -C incremental=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/incremental -L dependency=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/deps --extern proc_macro2=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/deps/libproc_macro2-3101b0ad76b98c0c.rlib --extern quote=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/deps/libquote-3d128417f373fb73.rlib --extern syn=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/deps/libsyn-e7b6fb8aa8bc6675.rlib --extern proc_macro`
-    Finished `test` profile [unoptimized + debuginfo] target(s) in 6.60s
+    Finished `test` profile [unoptimized + debuginfo] target(s) in 4.60s
      Running `CARGO=/usr/bin/cargo CARGO_MANIFEST_DIR=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0 CARGO_MANIFEST_PATH=/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/Cargo.toml CARGO_PKG_AUTHORS='Christian Meissl <meissl.christian@gmail.com>' CARGO_PKG_DESCRIPTION='Utility crate for managing FFI bindings in libdisplay-info.' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE=MIT CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=libdisplay-info-derive CARGO_PKG_README='' CARGO_PKG_REPOSITORY='https://github.com/Smithay/libdisplay-info-rs' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=0.1.0 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=1 CARGO_PKG_VERSION_PATCH=0 CARGO_PKG_VERSION_PRE='' LD_LIBRARY_PATH='/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/deps:/build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug:/usr/lib/rustlib/x86_64-unknown-linux-gnu/lib' /build/reproducible-path/rust-libdisplay-info-derive-0.1.0/target/debug/deps/libdisplay_info_derive-cac4cee5a2b2b165`
 
 running 0 tests
@@ -652,12 +688,14 @@
 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/1968220/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/1968220/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/3404593 and its subdirectories
-I: Current time: Tue Apr 21 18:58:33 -12 2026
-I: pbuilder-time-stamp: 1776841113
+I: removing directory /srv/workspace/pbuilder/1968220 and its subdirectories
+I: Current time: Thu Mar 20 14:36:27 +14 2025
+I: pbuilder-time-stamp: 1742430987