Diff of the two buildlogs:

--
--- b1/build.log	2024-12-14 12:53:21.224048390 +0000
+++ b2/build.log	2024-12-14 12:55:54.001067748 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Fri Jan 16 07:15:31 -12 2026
-I: pbuilder-time-stamp: 1768590931
+I: Current time: Sun Dec 15 02:53:24 +14 2024
+I: pbuilder-time-stamp: 1734180804
 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 golang-github-jamiealquiza-envy_1.1.0-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/666254/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/646636/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink02-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 Dec 14 12:53 /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/646636/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/646636/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]="37" [3]="1" [4]="release" [5]="aarch64-unknown-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=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='9d97e2ede25e4363804cd050abefaf6e'
-  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='666254'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=08aca153d8234021a6075a8c285f5a5a
+  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=646636
   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.teM0bmuQ/pbuilderrc_xCMC --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.teM0bmuQ/b1 --logfile b1/build.log golang-github-jamiealquiza-envy_1.1.0-2.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.teM0bmuQ/pbuilderrc_9RXt --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.teM0bmuQ/b2 --logfile b2/build.log golang-github-jamiealquiza-envy_1.1.0-2.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 codethink01-arm64 6.1.0-28-cloud-arm64 #1 SMP Debian 6.1.119-1 (2024-11-22) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-28-cloud-arm64 #1 SMP Debian 6.1.119-1 (2024-11-22) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/666254/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/646636/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -181,7 +213,7 @@
 Get: 65 http://deb.debian.org/debian unstable/main arm64 golang-gopkg-ini.v1-dev all 1.67.0-1 [39.9 kB]
 Get: 66 http://deb.debian.org/debian unstable/main arm64 golang-github-spf13-viper-dev all 1.12.0-1 [68.9 kB]
 Get: 67 http://deb.debian.org/debian unstable/main arm64 golang-github-spf13-cobra-dev all 1.8.1-1 [75.2 kB]
-Fetched 70.7 MB in 0s (193 MB/s)
+Fetched 70.7 MB in 2s (38.6 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package tzdata.
 (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 ... 20082 files and directories currently installed.)
@@ -411,8 +443,8 @@
 Setting up tzdata (2024b-4) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Fri Jan 16 19:15:53 UTC 2026.
-Universal Time is now:  Fri Jan 16 19:15:53 UTC 2026.
+Local time is now:      Sat Dec 14 12:54:23 UTC 2024.
+Universal Time is now:  Sat Dec 14 12:54:23 UTC 2024.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up golang-github-spf13-pflag-dev (1.0.6~git20210604-d5e0c0615ace-1) ...
@@ -470,7 +502,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-jamiealquiza-envy-1.1.0/ && 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  > ../golang-github-jamiealquiza-envy_1.1.0-2_source.changes
+I: user script /srv/workspace/pbuilder/646636/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/646636/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-jamiealquiza-envy-1.1.0/ && 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  > ../golang-github-jamiealquiza-envy_1.1.0-2_source.changes
 dpkg-buildpackage: info: source package golang-github-jamiealquiza-envy
 dpkg-buildpackage: info: source version 1.1.0-2
 dpkg-buildpackage: info: source distribution unstable
@@ -489,32 +525,32 @@
    dh_auto_configure -O--builddirectory=_build -O--buildsystem=golang
    dh_auto_build -O--builddirectory=_build -O--buildsystem=golang
 	cd _build && go install -trimpath -v -p 12 github.com/jamiealquiza/envy
-internal/goarch
 internal/godebugs
-internal/unsafeheader
-internal/byteorder
 encoding
+internal/byteorder
+internal/goarch
 internal/goexperiment
 cmp
-internal/profilerecord
-internal/goos
+internal/unsafeheader
+internal/cpu
 internal/coverage/rtcov
-runtime/internal/math
 internal/itoa
-internal/cpu
-internal/runtime/syscall
+internal/abi
+internal/goos
+runtime/internal/math
 internal/race
-runtime/internal/sys
 unicode/utf8
-math/bits
-internal/chacha8rand
+internal/runtime/syscall
+runtime/internal/sys
 sync/atomic
+math/bits
+internal/profilerecord
 unicode
+internal/chacha8rand
 internal/asan
 internal/msan
 internal/nettrace
 math
-internal/abi
 internal/bytealg
 internal/runtime/atomic
 internal/runtime/exithook
@@ -528,42 +564,42 @@
 internal/bisect
 internal/testlog
 internal/singleflight
-runtime/cgo
-sort
 errors
+sort
+runtime/cgo
 internal/godebug
-path
-vendor/golang.org/x/net/dns/dnsmessage
 strconv
+io
 internal/oserror
+path
 math/rand/v2
-io
-internal/concurrent
-bytes
+vendor/golang.org/x/net/dns/dnsmessage
 syscall
 strings
-unique
+internal/concurrent
+bytes
 reflect
-net/netip
-bufio
+unique
 regexp/syntax
-regexp
-internal/syscall/unix
+bufio
+net/netip
 time
 internal/syscall/execenv
+internal/syscall/unix
+regexp
 io/fs
 context
 internal/poll
+internal/filepathlite
+os
 internal/fmtsort
 encoding/binary
-internal/filepathlite
 encoding/base64
-os
 fmt
 path/filepath
 net
-encoding/csv
 flag
+encoding/csv
 encoding/hex
 net/url
 text/template/parse
@@ -599,12 +635,14 @@
 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/646636/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/646636/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/666254 and its subdirectories
-I: Current time: Fri Jan 16 07:16:19 -12 2026
-I: pbuilder-time-stamp: 1768590979
+I: removing directory /srv/workspace/pbuilder/646636 and its subdirectories
+I: Current time: Sun Dec 15 02:55:52 +14 2024
+I: pbuilder-time-stamp: 1734180952