Diff of the two buildlogs:

--
--- b1/build.log	2024-09-08 13:36:06.200938031 +0000
+++ b2/build.log	2024-09-08 13:37:38.445025036 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Sep  8 01:34:59 -12 2024
-I: pbuilder-time-stamp: 1725802499
+I: Current time: Mon Sep  9 03:36:15 +14 2024
+I: pbuilder-time-stamp: 1725802575
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -30,52 +30,84 @@
 dpkg-source: info: applying use-correct-syscall-on-time64.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/32502/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/16326/tmp/hooks/D01_modify_environment starting
+debug: Running on virt64a.
+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 Sep  8 13:36 /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/16326/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/16326/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='armhf'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=3 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='armhf'
+  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]="arm-unknown-linux-gnueabihf")
+  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=armhf
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=4 '
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=arm
+  HOST_ARCH=armhf
   IFS=' 	
   '
-  INVOCATION_ID='12c43bd3f8ce4a26885e443208f51776'
-  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='32502'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=b296f2bf54c34074ada55adc311688d5
+  LANG=C
+  LANGUAGE=it_CH:it
+  LC_ALL=C
+  MACHTYPE=arm-unknown-linux-gnueabihf
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnueabihf
+  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=16326
   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.bEVs6J9a/pbuilderrc_UdQH --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.bEVs6J9a/b1 --logfile b1/build.log rust-filetime_0.2.24-1.dsc'
-  SUDO_GID='110'
-  SUDO_UID='103'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://10.0.0.15:3142/'
+  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.bEVs6J9a/pbuilderrc_bPZ3 --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.bEVs6J9a/b2 --logfile b2/build.log rust-filetime_0.2.24-1.dsc'
+  SUDO_GID=114
+  SUDO_UID=108
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://10.0.0.15:3142/
 I: uname -a
-  Linux virt32z 6.1.0-25-armmp-lpae #1 SMP Debian 6.1.106-3 (2024-08-26) armv7l GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-25-arm64 #1 SMP Debian 6.1.106-3 (2024-08-26) 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/32502/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/16326/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -196,7 +228,7 @@
 Get: 73 http://deb.debian.org/debian unstable/main armhf dh-cargo all 31 [10.3 kB]
 Get: 74 http://deb.debian.org/debian unstable/main armhf librust-cfg-if-dev armhf 1.0.0-1+b1 [10.7 kB]
 Get: 75 http://deb.debian.org/debian unstable/main armhf librust-libc-dev armhf 0.2.155-1 [354 kB]
-Fetched 117 MB in 1s (97.5 MB/s)
+Fetched 117 MB in 2s (54.8 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libpython3.12-minimal:armhf.
 (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19491 files and directories currently installed.)
@@ -462,8 +494,8 @@
 Setting up tzdata (2024a-4) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Sun Sep  8 13:35:39 UTC 2024.
-Universal Time is now:  Sun Sep  8 13:35:39 UTC 2024.
+Local time is now:      Sun Sep  8 13:37:07 UTC 2024.
+Universal Time is now:  Sun Sep  8 13:37:07 UTC 2024.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -525,7 +557,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/rust-filetime-0.2.24/ && 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-filetime_0.2.24-1_source.changes
+I: user script /srv/workspace/pbuilder/16326/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/16326/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/rust-filetime-0.2.24/ && 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-filetime_0.2.24-1_source.changes
 dpkg-buildpackage: info: source package rust-filetime
 dpkg-buildpackage: info: source version 0.2.24-1
 dpkg-buildpackage: info: source distribution unstable
@@ -535,7 +571,7 @@
  debian/rules clean
 dh clean --buildsystem cargo
    dh_auto_clean -O--buildsystem=cargo
-debian cargo wrapper: options, profiles, parallel, lto: ['buildinfo=+all', 'reproducible=+all', 'parallel=3'] [] ['-j3'] 0
+debian cargo wrapper: options, profiles, parallel, lto: ['buildinfo=+all', 'reproducible=+all', 'parallel=4'] [] ['-j4'] 0
 debian cargo wrapper: rust_type, gnu_type: armv7-unknown-linux-gnueabihf, arm-linux-gnueabihf
 debian cargo wrapper: running subprocess (['env', 'RUST_BACKTRACE=1', '/usr/bin/cargo', 'clean', '--verbose', '--verbose'],) {'check': True}
      Removed 0 files
@@ -546,14 +582,14 @@
    dh_update_autotools_config -O--buildsystem=cargo
    dh_autoreconf -O--buildsystem=cargo
    dh_auto_configure -O--buildsystem=cargo
-debian cargo wrapper: options, profiles, parallel, lto: ['buildinfo=+all', 'reproducible=+all', 'parallel=3'] [] ['-j3'] 0
+debian cargo wrapper: options, profiles, parallel, lto: ['buildinfo=+all', 'reproducible=+all', 'parallel=4'] [] ['-j4'] 0
 debian cargo wrapper: rust_type, gnu_type: armv7-unknown-linux-gnueabihf, arm-linux-gnueabihf
 debian cargo wrapper: linking /usr/share/cargo/registry/* into /build/reproducible-path/rust-filetime-0.2.24/debian/cargo_registry/
    dh_auto_build -O--buildsystem=cargo
    dh_auto_test -O--buildsystem=cargo
-debian cargo wrapper: options, profiles, parallel, lto: ['buildinfo=+all', 'reproducible=+all', 'parallel=3'] [] ['-j3'] 0
+debian cargo wrapper: options, profiles, parallel, lto: ['buildinfo=+all', 'reproducible=+all', 'parallel=4'] [] ['-j4'] 0
 debian cargo wrapper: rust_type, gnu_type: armv7-unknown-linux-gnueabihf, arm-linux-gnueabihf
-debian cargo wrapper: running subprocess (['env', 'RUST_BACKTRACE=1', '/usr/bin/cargo', '-Zavoid-dev-deps', 'build', '--verbose', '--verbose', '-j3', '--target', 'armv7-unknown-linux-gnueabihf'],) {}
+debian cargo wrapper: running subprocess (['env', 'RUST_BACKTRACE=1', '/usr/bin/cargo', '-Zavoid-dev-deps', 'build', '--verbose', '--verbose', '-j4', '--target', 'armv7-unknown-linux-gnueabihf'],) {}
    Compiling libc v0.2.155
    Compiling cfg-if v1.0.0
      Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=build_script_build CARGO_MANIFEST_DIR=/build/reproducible-path/rust-filetime-0.2.24/debian/cargo_registry/libc-0.2.155 CARGO_PKG_AUTHORS='The Rust Project Developers' CARGO_PKG_DESCRIPTION='Raw FFI bindings to platform libraries like libc.
@@ -563,7 +599,7 @@
 item that gets emitted.
 ' CARGO_PKG_HOMEPAGE='https://github.com/alexcrichton/cfg-if' CARGO_PKG_LICENSE=MIT/Apache-2.0 CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=cfg-if CARGO_PKG_README=README.md CARGO_PKG_REPOSITORY='https://github.com/alexcrichton/cfg-if' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=1.0.0 CARGO_PKG_VERSION_MAJOR=1 CARGO_PKG_VERSION_MINOR=0 CARGO_PKG_VERSION_PATCH=0 CARGO_PKG_VERSION_PRE='' CARGO_RUSTC_CURRENT_DIR=/build/reproducible-path/rust-filetime-0.2.24/debian/cargo_registry/cfg-if-1.0.0 LD_LIBRARY_PATH=/build/reproducible-path/rust-filetime-0.2.24/target/debug/deps rustc --crate-name cfg_if --edition=2018 /build/reproducible-path/rust-filetime-0.2.24/debian/cargo_registry/cfg-if-1.0.0/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 --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values("core"))' -C metadata=4c17de1738367461 -C extra-filename=-4c17de1738367461 --out-dir /build/reproducible-path/rust-filetime-0.2.24/target/armv7-unknown-linux-gnueabihf/debug/deps --target armv7-unknown-linux-gnueabihf -L dependency=/build/reproducible-path/rust-filetime-0.2.24/target/armv7-unknown-linux-gnueabihf/debug/deps -L dependency=/build/reproducible-path/rust-filetime-0.2.24/target/debug/deps --cap-lints warn -C debuginfo=2 -C strip=none --cap-lints warn -C linker=arm-linux-gnueabihf-gcc -C link-arg=-Wl,-z,relro --remap-path-prefix /build/reproducible-path/rust-filetime-0.2.24=/usr/share/cargo/registry/filetime-0.2.24 --remap-path-prefix /build/reproducible-path/rust-filetime-0.2.24/debian/cargo_registry=/usr/share/cargo/registry`
      Running `CARGO=/usr/bin/cargo CARGO_CFG_PANIC=unwind CARGO_CFG_TARGET_ABI=eabihf CARGO_CFG_TARGET_ARCH=arm CARGO_CFG_TARGET_ENDIAN=little CARGO_CFG_TARGET_ENV=gnu CARGO_CFG_TARGET_FAMILY=unix CARGO_CFG_TARGET_HAS_ATOMIC=16,32,64,8,ptr CARGO_CFG_TARGET_OS=linux CARGO_CFG_TARGET_POINTER_WIDTH=32 CARGO_CFG_TARGET_VENDOR=unknown CARGO_CFG_UNIX='' CARGO_ENCODED_RUSTFLAGS='-Cdebuginfo=2-Cstrip=none--cap-lintswarn-Clinker=arm-linux-gnueabihf-gcc-Clink-arg=-Wl,-z,relro--remap-path-prefix/build/reproducible-path/rust-filetime-0.2.24=/usr/share/cargo/registry/filetime-0.2.24--remap-path-prefix/build/reproducible-path/rust-filetime-0.2.24/debian/cargo_registry=/usr/share/cargo/registry' CARGO_FEATURE_DEFAULT=1 CARGO_FEATURE_STD=1 CARGO_MANIFEST_DIR=/build/reproducible-path/rust-filetime-0.2.24/debian/cargo_registry/libc-0.2.155 CARGO_PKG_AUTHORS='The Rust Project Developers' CARGO_PKG_DESCRIPTION='Raw FFI bindings to platform libraries like libc.
-' CARGO_PKG_HOMEPAGE='https://github.com/rust-lang/libc' CARGO_PKG_LICENSE='MIT OR Apache-2.0' CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=libc CARGO_PKG_README=README.md CARGO_PKG_REPOSITORY='https://github.com/rust-lang/libc' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=0.2.155 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=2 CARGO_PKG_VERSION_PATCH=155 CARGO_PKG_VERSION_PRE='' DEBUG=true HOST=armv7-unknown-linux-gnueabihf LD_LIBRARY_PATH='/build/reproducible-path/rust-filetime-0.2.24/target/debug/deps:/build/reproducible-path/rust-filetime-0.2.24/target/debug:/usr/lib/rustlib/armv7-unknown-linux-gnueabihf/lib' NUM_JOBS=3 OPT_LEVEL=0 OUT_DIR=/build/reproducible-path/rust-filetime-0.2.24/target/armv7-unknown-linux-gnueabihf/debug/build/libc-3d41e36468856f91/out PROFILE=debug RUSTC=rustc RUSTDOC=rustdoc TARGET=armv7-unknown-linux-gnueabihf /build/reproducible-path/rust-filetime-0.2.24/target/debug/build/libc-cf75469f62c5e3f7/build-script-build`
+' CARGO_PKG_HOMEPAGE='https://github.com/rust-lang/libc' CARGO_PKG_LICENSE='MIT OR Apache-2.0' CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=libc CARGO_PKG_README=README.md CARGO_PKG_REPOSITORY='https://github.com/rust-lang/libc' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=0.2.155 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=2 CARGO_PKG_VERSION_PATCH=155 CARGO_PKG_VERSION_PRE='' DEBUG=true HOST=armv7-unknown-linux-gnueabihf LD_LIBRARY_PATH='/build/reproducible-path/rust-filetime-0.2.24/target/debug/deps:/build/reproducible-path/rust-filetime-0.2.24/target/debug:/usr/lib/rustlib/armv7-unknown-linux-gnueabihf/lib' NUM_JOBS=4 OPT_LEVEL=0 OUT_DIR=/build/reproducible-path/rust-filetime-0.2.24/target/armv7-unknown-linux-gnueabihf/debug/build/libc-3d41e36468856f91/out PROFILE=debug RUSTC=rustc RUSTDOC=rustdoc TARGET=armv7-unknown-linux-gnueabihf /build/reproducible-path/rust-filetime-0.2.24/target/debug/build/libc-cf75469f62c5e3f7/build-script-build`
 [libc 0.2.155] cargo:rerun-if-changed=build.rs
 [libc 0.2.155] cargo:rustc-cfg=freebsd11
 [libc 0.2.155] cargo:rustc-cfg=gnu_time64_abi
@@ -647,7 +683,7 @@
    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
 
 warning: `filetime` (lib) generated 3 warnings
-    Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.59s
+    Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.35s
 librust-cfg-if-dev:armhf 1.0.0-1+b1 0
 librust-libc-dev:armhf 0.2.155-1 0
 rustc 1.80.1+dfsg1-1 1
@@ -681,12 +717,14 @@
 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/16326/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/16326/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/32502 and its subdirectories
-I: Current time: Sun Sep  8 01:36:02 -12 2024
-I: pbuilder-time-stamp: 1725802562
+I: removing directory /srv/workspace/pbuilder/16326 and its subdirectories
+I: Current time: Mon Sep  9 03:37:34 +14 2024
+I: pbuilder-time-stamp: 1725802654