Diff of the two buildlogs:

--
--- b1/build.log	2023-04-10 15:43:35.486196043 +0000
+++ b2/build.log	2023-04-10 15:45:10.415026821 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun May 12 10:05:33 -12 2024
-I: pbuilder-time-stamp: 1715551533
+I: Current time: Tue Apr 11 05:43:39 +14 2023
+I: pbuilder-time-stamp: 1681141419
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/bookworm-reproducible-base.tgz]
 I: copying local configuration
@@ -16,7 +16,7 @@
 I: copying [./rust-tap_1.0.1.orig.tar.gz]
 I: copying [./rust-tap_1.0.1-1.debian.tar.xz]
 I: Extracting source
-gpgv: Signature made Mon Jan  9 08:51:29 2023 -12
+gpgv: Signature made Tue Jan 10 10:51:29 2023 +14
 gpgv:                using RSA key B60DB5994D39BEC4D1A95CCF7E6528DA752F1BE1
 gpgv: Can't check signature: No public key
 dpkg-source: warning: cannot verify inline signature for ./rust-tap_1.0.1-1.dsc: no acceptable signature found
@@ -25,11 +25,20 @@
 dpkg-source: info: unpacking rust-tap_1.0.1-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/12639/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/29292/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink16-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
+lrwxrwxrwx 1 root root 4 Jan  6 03:20 /bin/sh -> dash
+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/29292/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/29292/tmp/hooks/D02_print_environment starting
 I: set
   BUILDDIR='/build'
-  BUILDUSERGECOS='first user,first room,first work-phone,first home-phone,first other'
-  BUILDUSERNAME='pbuilder1'
+  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=8'
@@ -39,38 +48,38 @@
   IFS=' 	
   '
   LANG='C'
-  LANGUAGE='en_US:en'
+  LANGUAGE='nl_BE:nl'
   LC_ALL='C'
   MAIL='/var/mail/root'
   OPTIND='1'
-  PATH='/usr/sbin:/usr/bin:/sbin:/bin:/usr/games'
+  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'
-  PPID='12639'
+  PPID='29292'
   PS1='# '
   PS2='> '
   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.OJTq74yu/pbuilderrc_YqbZ --distribution bookworm --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.OJTq74yu/b1 --logfile b1/build.log rust-tap_1.0.1-1.dsc'
+  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.OJTq74yu/pbuilderrc_1Obo --distribution bookworm --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.OJTq74yu/b2 --logfile b2/build.log --extrapackages usrmerge rust-tap_1.0.1-1.dsc'
   SUDO_GID='117'
   SUDO_UID='110'
   SUDO_USER='jenkins'
   TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
+  TZ='/usr/share/zoneinfo/Etc/GMT-14'
   USER='root'
   USERNAME='root'
   _='/usr/bin/systemd-run'
   http_proxy='http://192.168.101.16:3128'
 I: uname -a
-  Linux codethink9-arm64 4.15.0-208-generic #220-Ubuntu SMP Mon Mar 20 14:28:12 UTC 2023 aarch64 GNU/Linux
+  Linux i-capture-the-hostname 4.15.0-208-generic #220-Ubuntu SMP Mon Mar 20 14:28:12 UTC 2023 aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 May 11 04:48 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/12639/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Apr  9 00:25 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/29292/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -176,7 +185,7 @@
 Get: 62 http://deb.debian.org/debian bookworm/main arm64 po-debconf all 1.0.21+nmu1 [248 kB]
 Get: 63 http://deb.debian.org/debian bookworm/main arm64 debhelper all 13.11.4 [942 kB]
 Get: 64 http://deb.debian.org/debian bookworm/main arm64 dh-cargo all 30 [10.3 kB]
-Fetched 107 MB in 2s (53.1 MB/s)
+Fetched 107 MB in 2s (55.5 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libpython3.11-minimal:arm64.
 (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 ... 19616 files and directories currently installed.)
@@ -448,8 +457,17 @@
 Writing extended state information...
 Building tag database...
  -> Finished parsing the build-deps
+Reading package lists...
+Building dependency tree...
+Reading state information...
+usrmerge is already the newest version (35).
+0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/rust-tap-1.0.1/ && 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-tap_1.0.1-1_source.changes
+I: user script /srv/workspace/pbuilder/29292/tmp/hooks/A99_set_merged_usr starting
+Re-configuring usrmerge...
+I: user script /srv/workspace/pbuilder/29292/tmp/hooks/A99_set_merged_usr finished
+hostname: Temporary failure in name resolution
+I: Running cd /build/rust-tap-1.0.1/ && 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-tap_1.0.1-1_source.changes
 dpkg-buildpackage: info: source package rust-tap
 dpkg-buildpackage: info: source version 1.0.1-1
 dpkg-buildpackage: info: source distribution unstable
@@ -482,7 +500,7 @@
    Compiling tap v1.0.1 (/build/rust-tap-1.0.1)
      Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=tap CARGO_MANIFEST_DIR=/build/rust-tap-1.0.1 CARGO_PKG_AUTHORS='Elliott Linder <elliott.darfink@gmail.com>:myrrlyn <self@myrrlyn.dev>' CARGO_PKG_DESCRIPTION='Generic extensions for tapping values in Rust' CARGO_PKG_HOMEPAGE='https://github.com/myrrlyn/tap' CARGO_PKG_LICENSE=MIT CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=tap CARGO_PKG_REPOSITORY='https://github.com/myrrlyn/tap' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=1.0.1 CARGO_PKG_VERSION_MAJOR=1 CARGO_PKG_VERSION_MINOR=0 CARGO_PKG_VERSION_PATCH=1 CARGO_PKG_VERSION_PRE='' CARGO_PRIMARY_PACKAGE=1 LD_LIBRARY_PATH='/build/rust-tap-1.0.1/target/debug/deps:/usr/lib' rustc --crate-name tap 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=c81d5b2b96b99053 -C extra-filename=-c81d5b2b96b99053 --out-dir /build/rust-tap-1.0.1/target/aarch64-unknown-linux-gnu/debug/deps --target aarch64-unknown-linux-gnu -C incremental=/build/rust-tap-1.0.1/target/aarch64-unknown-linux-gnu/debug/incremental -L dependency=/build/rust-tap-1.0.1/target/aarch64-unknown-linux-gnu/debug/deps -L dependency=/build/rust-tap-1.0.1/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/rust-tap-1.0.1=/usr/share/cargo/registry/tap-1.0.1 --remap-path-prefix /build/rust-tap-1.0.1/debian/cargo_registry=/usr/share/cargo/registry`
      Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=tap CARGO_MANIFEST_DIR=/build/rust-tap-1.0.1 CARGO_PKG_AUTHORS='Elliott Linder <elliott.darfink@gmail.com>:myrrlyn <self@myrrlyn.dev>' CARGO_PKG_DESCRIPTION='Generic extensions for tapping values in Rust' CARGO_PKG_HOMEPAGE='https://github.com/myrrlyn/tap' CARGO_PKG_LICENSE=MIT CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=tap CARGO_PKG_REPOSITORY='https://github.com/myrrlyn/tap' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=1.0.1 CARGO_PKG_VERSION_MAJOR=1 CARGO_PKG_VERSION_MINOR=0 CARGO_PKG_VERSION_PATCH=1 CARGO_PKG_VERSION_PRE='' CARGO_PRIMARY_PACKAGE=1 LD_LIBRARY_PATH='/build/rust-tap-1.0.1/target/debug/deps:/usr/lib' rustc --crate-name tap 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=3fee19b9154632a5 -C extra-filename=-3fee19b9154632a5 --out-dir /build/rust-tap-1.0.1/target/aarch64-unknown-linux-gnu/debug/deps --target aarch64-unknown-linux-gnu -C incremental=/build/rust-tap-1.0.1/target/aarch64-unknown-linux-gnu/debug/incremental -L dependency=/build/rust-tap-1.0.1/target/aarch64-unknown-linux-gnu/debug/deps -L dependency=/build/rust-tap-1.0.1/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/rust-tap-1.0.1=/usr/share/cargo/registry/tap-1.0.1 --remap-path-prefix /build/rust-tap-1.0.1/debian/cargo_registry=/usr/share/cargo/registry`
-    Finished test [unoptimized + debuginfo] target(s) in 2.09s
+    Finished test [unoptimized + debuginfo] target(s) in 2.76s
      Running `/build/rust-tap-1.0.1/target/aarch64-unknown-linux-gnu/debug/deps/tap-3fee19b9154632a5`
 
 running 0 tests
@@ -494,25 +512,25 @@
 
 running 18 tests
 test src/lib.rs - (line 82) - compile fail ... ok
-test src/lib.rs - (line 108) ... ok
 test src/lib.rs - (line 46) ... ok
 test src/pipe.rs - pipe::Pipe (line 27) ... ok
-test src/conv.rs - conv::Conv::conv (line 41) ... ok
 test src/lib.rs - (line 18) ... ok
+test src/lib.rs - (line 108) ... ok
 test src/lib.rs - (line 98) ... ok
 test src/pipe.rs - pipe::Pipe (line 38) ... ok
+test src/conv.rs - conv::Conv::conv (line 41) ... ok
 test src/conv.rs - conv::TryConv::try_conv (line 69) ... ok
 test src/pipe.rs - pipe::Pipe::pipe (line 60) ... ok
-test src/pipe.rs - pipe::Pipe::pipe_borrow (line 136) ... ok
 test src/pipe.rs - pipe::Pipe::pipe_borrow_mut (line 157) ... ok
+test src/pipe.rs - pipe::Pipe::pipe_borrow (line 136) ... ok
 test src/tap.rs - tap::Tap::tap (line 65) ... ok
 test src/pipe.rs - pipe::Pipe::pipe_ref_mut (line 108) ... ok
 test src/pipe.rs - pipe::Pipe::pipe_ref (line 85) ... ok
-test src/tap.rs - tap (line 18) ... ok
 test src/tap.rs - tap::Tap::tap_mut (line 106) ... ok
+test src/tap.rs - tap (line 18) ... ok
 test src/tap.rs - tap::Tap::tap_mut (line 96) ... ok
 
-test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 5.59s
+test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 12.18s
 
 rustc 1.63.0+dfsg1-2 1
 make[1]: Leaving directory '/build/rust-tap-1.0.1'
@@ -546,12 +564,14 @@
 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/29292/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/29292/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/12639 and its subdirectories
-I: Current time: Sun May 12 10:06:34 -12 2024
-I: pbuilder-time-stamp: 1715551594
+I: removing directory /srv/workspace/pbuilder/29292 and its subdirectories
+I: Current time: Tue Apr 11 05:45:09 +14 2023
+I: pbuilder-time-stamp: 1681141509