Diff of the two buildlogs:

--
--- b1/build.log	2024-04-25 08:34:29.231264355 +0000
+++ b2/build.log	2024-04-25 08:35:08.605588001 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Apr 24 20:33:57 -12 2024
-I: pbuilder-time-stamp: 1714034037
+I: Current time: Thu Apr 25 22:34:32 +14 2024
+I: pbuilder-time-stamp: 1714034072
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -27,52 +27,84 @@
 dpkg-source: info: applying disable-llvm-asm.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/87280/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/497338/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 Apr 25 08:34 /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/497338/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/497338/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='trixie'
-  HOME='/root'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  INVOCATION_ID='fee1a21fc9fb4171a083c0d9463d7484'
-  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='87280'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=24e4f35e099c4c0a827b4139e34f2842
+  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=497338
   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.rckpIwtK/pbuilderrc_4kyM --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.rckpIwtK/b1 --logfile b1/build.log rust-sc_0.2.7-2.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.rckpIwtK/pbuilderrc_01Mp --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.rckpIwtK/b2 --logfile b2/build.log rust-sc_0.2.7-2.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 6.1.0-20-cloud-arm64 #1 SMP Debian 6.1.85-1 (2024-04-11) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-20-cloud-arm64 #1 SMP Debian 6.1.85-1 (2024-04-11) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Apr 21 07:15 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/87280/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Apr 23 11:23 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/497338/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -242,7 +274,7 @@
 Get: 68 http://deb.debian.org/debian trixie/main arm64 po-debconf all 1.0.21+nmu1 [248 kB]
 Get: 69 http://deb.debian.org/debian trixie/main arm64 debhelper all 13.15.3 [901 kB]
 Get: 70 http://deb.debian.org/debian trixie/main arm64 dh-cargo all 31 [10.3 kB]
-Fetched 119 MB in 0s (246 MB/s)
+Fetched 119 MB in 0s (244 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 dpkg: libnettle8:arm64: dependency problems, but removing anyway as you requested:
  libhogweed6:arm64 depends on libnettle8.
@@ -514,8 +546,8 @@
 Setting up tzdata (2024a-1) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Thu Apr 25 08:34:18 UTC 2024.
-Universal Time is now:  Thu Apr 25 08:34:18 UTC 2024.
+Local time is now:      Thu Apr 25 08:34:53 UTC 2024.
+Universal Time is now:  Thu Apr 25 08:34:53 UTC 2024.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -575,7 +607,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/rust-sc-0.2.7/ && 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-sc_0.2.7-2_source.changes
+I: user script /srv/workspace/pbuilder/497338/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/497338/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/rust-sc-0.2.7/ && 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-sc_0.2.7-2_source.changes
 dpkg-buildpackage: info: source package rust-sc
 dpkg-buildpackage: info: source version 0.2.7-2
 dpkg-buildpackage: info: source distribution unstable
@@ -606,10 +642,10 @@
 debian cargo wrapper: rust_type, gnu_type: aarch64-unknown-linux-gnu, aarch64-linux-gnu
 debian cargo wrapper: running subprocess (['env', 'RUST_BACKTRACE=1', '/usr/bin/cargo', '-Zavoid-dev-deps', 'test', '--verbose', '--verbose', '-j12', '--target', 'aarch64-unknown-linux-gnu', '--all'],) {}
    Compiling sc v0.2.7 (/build/reproducible-path/rust-sc-0.2.7)
-     Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=sc CARGO_MANIFEST_DIR=/build/reproducible-path/rust-sc-0.2.7 CARGO_PKG_AUTHORS='The syscall.rs Project Developers' CARGO_PKG_DESCRIPTION='Raw system calls' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE='MIT OR Apache-2.0' CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=sc CARGO_PKG_REPOSITORY='https://github.com/japaric/syscall.rs' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=0.2.7 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=2 CARGO_PKG_VERSION_PATCH=7 CARGO_PKG_VERSION_PRE='' CARGO_PRIMARY_PACKAGE=1 LD_LIBRARY_PATH='/build/reproducible-path/rust-sc-0.2.7/target/debug/deps:/usr/lib' rustc --crate-name sc 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 -C metadata=d9c65a9ca01edf91 -C extra-filename=-d9c65a9ca01edf91 --out-dir /build/reproducible-path/rust-sc-0.2.7/target/aarch64-unknown-linux-gnu/debug/deps --target aarch64-unknown-linux-gnu -C incremental=/build/reproducible-path/rust-sc-0.2.7/target/aarch64-unknown-linux-gnu/debug/incremental -L dependency=/build/reproducible-path/rust-sc-0.2.7/target/aarch64-unknown-linux-gnu/debug/deps -L dependency=/build/reproducible-path/rust-sc-0.2.7/target/debug/deps -C debuginfo=2 --cap-lints warn -C linker=aarch64-linux-gnu-gcc -C link-arg=-Wl,-z,relro --remap-path-prefix /build/reproducible-path/rust-sc-0.2.7=/usr/share/cargo/registry/sc-0.2.7 --remap-path-prefix /build/reproducible-path/rust-sc-0.2.7/debian/cargo_registry=/usr/share/cargo/registry`
      Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=sc CARGO_MANIFEST_DIR=/build/reproducible-path/rust-sc-0.2.7 CARGO_PKG_AUTHORS='The syscall.rs Project Developers' CARGO_PKG_DESCRIPTION='Raw system calls' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE='MIT OR Apache-2.0' CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=sc CARGO_PKG_REPOSITORY='https://github.com/japaric/syscall.rs' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=0.2.7 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=2 CARGO_PKG_VERSION_PATCH=7 CARGO_PKG_VERSION_PRE='' CARGO_PRIMARY_PACKAGE=1 LD_LIBRARY_PATH='/build/reproducible-path/rust-sc-0.2.7/target/debug/deps:/usr/lib' rustc --crate-name sc src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test -C metadata=70176bc0fc1590df -C extra-filename=-70176bc0fc1590df --out-dir /build/reproducible-path/rust-sc-0.2.7/target/aarch64-unknown-linux-gnu/debug/deps --target aarch64-unknown-linux-gnu -C incremental=/build/reproducible-path/rust-sc-0.2.7/target/aarch64-unknown-linux-gnu/debug/incremental -L dependency=/build/reproducible-path/rust-sc-0.2.7/target/aarch64-unknown-linux-gnu/debug/deps -L dependency=/build/reproducible-path/rust-sc-0.2.7/target/debug/deps -C debuginfo=2 --cap-lints warn -C linker=aarch64-linux-gnu-gcc -C link-arg=-Wl,-z,relro --remap-path-prefix /build/reproducible-path/rust-sc-0.2.7=/usr/share/cargo/registry/sc-0.2.7 --remap-path-prefix /build/reproducible-path/rust-sc-0.2.7/debian/cargo_registry=/usr/share/cargo/registry`
+     Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=sc CARGO_MANIFEST_DIR=/build/reproducible-path/rust-sc-0.2.7 CARGO_PKG_AUTHORS='The syscall.rs Project Developers' CARGO_PKG_DESCRIPTION='Raw system calls' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE='MIT OR Apache-2.0' CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=sc CARGO_PKG_REPOSITORY='https://github.com/japaric/syscall.rs' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=0.2.7 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=2 CARGO_PKG_VERSION_PATCH=7 CARGO_PKG_VERSION_PRE='' CARGO_PRIMARY_PACKAGE=1 LD_LIBRARY_PATH='/build/reproducible-path/rust-sc-0.2.7/target/debug/deps:/usr/lib' rustc --crate-name sc 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 -C metadata=d9c65a9ca01edf91 -C extra-filename=-d9c65a9ca01edf91 --out-dir /build/reproducible-path/rust-sc-0.2.7/target/aarch64-unknown-linux-gnu/debug/deps --target aarch64-unknown-linux-gnu -C incremental=/build/reproducible-path/rust-sc-0.2.7/target/aarch64-unknown-linux-gnu/debug/incremental -L dependency=/build/reproducible-path/rust-sc-0.2.7/target/aarch64-unknown-linux-gnu/debug/deps -L dependency=/build/reproducible-path/rust-sc-0.2.7/target/debug/deps -C debuginfo=2 --cap-lints warn -C linker=aarch64-linux-gnu-gcc -C link-arg=-Wl,-z,relro --remap-path-prefix /build/reproducible-path/rust-sc-0.2.7=/usr/share/cargo/registry/sc-0.2.7 --remap-path-prefix /build/reproducible-path/rust-sc-0.2.7/debian/cargo_registry=/usr/share/cargo/registry`
      Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=test CARGO_MANIFEST_DIR=/build/reproducible-path/rust-sc-0.2.7 CARGO_PKG_AUTHORS='The syscall.rs Project Developers' CARGO_PKG_DESCRIPTION='Raw system calls' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE='MIT OR Apache-2.0' CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=sc CARGO_PKG_REPOSITORY='https://github.com/japaric/syscall.rs' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=0.2.7 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=2 CARGO_PKG_VERSION_PATCH=7 CARGO_PKG_VERSION_PRE='' CARGO_PRIMARY_PACKAGE=1 CARGO_TARGET_TMPDIR=/build/reproducible-path/rust-sc-0.2.7/target/aarch64-unknown-linux-gnu/tmp LD_LIBRARY_PATH='/build/reproducible-path/rust-sc-0.2.7/target/debug/deps:/usr/lib' rustc --crate-name test tests/test.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test -C metadata=89da48967a59156f -C extra-filename=-89da48967a59156f --out-dir /build/reproducible-path/rust-sc-0.2.7/target/aarch64-unknown-linux-gnu/debug/deps --target aarch64-unknown-linux-gnu -C incremental=/build/reproducible-path/rust-sc-0.2.7/target/aarch64-unknown-linux-gnu/debug/incremental -L dependency=/build/reproducible-path/rust-sc-0.2.7/target/aarch64-unknown-linux-gnu/debug/deps -L dependency=/build/reproducible-path/rust-sc-0.2.7/target/debug/deps --extern sc=/build/reproducible-path/rust-sc-0.2.7/target/aarch64-unknown-linux-gnu/debug/deps/libsc-d9c65a9ca01edf91.rlib -C debuginfo=2 --cap-lints warn -C linker=aarch64-linux-gnu-gcc -C link-arg=-Wl,-z,relro --remap-path-prefix /build/reproducible-path/rust-sc-0.2.7=/usr/share/cargo/registry/sc-0.2.7 --remap-path-prefix /build/reproducible-path/rust-sc-0.2.7/debian/cargo_registry=/usr/share/cargo/registry`
-    Finished test [unoptimized + debuginfo] target(s) in 0.94s
+    Finished test [unoptimized + debuginfo] target(s) in 1.01s
      Running `/build/reproducible-path/rust-sc-0.2.7/target/aarch64-unknown-linux-gnu/debug/deps/sc-70176bc0fc1590df`
 
 running 0 tests
@@ -664,12 +700,14 @@
 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/497338/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/497338/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/87280 and its subdirectories
-I: Current time: Wed Apr 24 20:34:28 -12 2024
-I: pbuilder-time-stamp: 1714034068
+I: removing directory /srv/workspace/pbuilder/497338 and its subdirectories
+I: Current time: Thu Apr 25 22:35:07 +14 2024
+I: pbuilder-time-stamp: 1714034107