Diff of the two buildlogs:

--
--- b1/build.log	2025-02-06 01:51:46.538076128 +0000
+++ b2/build.log	2025-02-06 01:52:41.451585898 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Feb  5 13:47:54 -12 2025
-I: pbuilder-time-stamp: 1738806474
+I: Current time: Wed Mar 11 22:14:48 +14 2026
+I: pbuilder-time-stamp: 1773216888
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -24,52 +24,84 @@
 dpkg-source: info: applying test-containerized.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/1368770/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/1891898/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos15-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 11 08:14 /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/1891898/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/1891898/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'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=20 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='amd64'
+  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=42 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='3de091b1798b4dddaff5e8e58cc962cd'
-  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='1368770'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=3842fc3bfb714f008f3a7d7384436d8d
+  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=1891898
   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.MS4RTQ0g/pbuilderrc_cRxR --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.MS4RTQ0g/b1 --logfile b1/build.log golang-github-kardianos-service_1.2.2-1.dsc'
-  SUDO_GID='110'
-  SUDO_UID='105'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://46.16.76.132:3128'
+  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.MS4RTQ0g/pbuilderrc_vxmx --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.MS4RTQ0g/b2 --logfile b2/build.log golang-github-kardianos-service_1.2.2-1.dsc'
+  SUDO_GID=111
+  SUDO_UID=106
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://213.165.73.152:3128
 I: uname -a
-  Linux ionos1-amd64 6.1.0-30-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.124-1 (2025-01-12) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.12.9+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.9-1~bpo12+1 (2025-01-19) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/1368770/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/1891898/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -145,7 +177,7 @@
 Get: 34 http://deb.debian.org/debian trixie/main amd64 golang-src all 2:1.23~2 [5088 B]
 Get: 35 http://deb.debian.org/debian trixie/main amd64 golang-go amd64 2:1.23~2 [44.3 kB]
 Get: 36 http://deb.debian.org/debian trixie/main amd64 golang-any amd64 2:1.23~2 [5172 B]
-Fetched 66.7 MB in 11s (6231 kB/s)
+Fetched 66.7 MB in 3s (20.0 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package sensible-utils.
 (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 ... 19843 files and directories currently installed.)
@@ -304,7 +336,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-kardianos-service-1.2.2/ && 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-kardianos-service_1.2.2-1_source.changes
+I: user script /srv/workspace/pbuilder/1891898/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/1891898/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-kardianos-service-1.2.2/ && 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-kardianos-service_1.2.2-1_source.changes
 dpkg-buildpackage: info: source package golang-github-kardianos-service
 dpkg-buildpackage: info: source version 1.2.2-1
 dpkg-buildpackage: info: source distribution unstable
@@ -322,42 +358,42 @@
    dh_autoreconf -O--buildsystem=golang
    dh_auto_configure -O--buildsystem=golang
    dh_auto_build -O--buildsystem=golang
-	cd obj-x86_64-linux-gnu && go install -trimpath -v -p 20 github.com/kardianos/service
-internal/goarch
-internal/race
+	cd obj-x86_64-linux-gnu && go install -trimpath -v -p 42 github.com/kardianos/service
+log/internal
+internal/godebugs
 internal/itoa
-internal/asan
-internal/unsafeheader
+internal/nettrace
+internal/coverage/rtcov
+internal/race
 cmp
+internal/goarch
+internal/unsafeheader
+math/bits
+internal/profilerecord
 internal/msan
+internal/asan
+internal/byteorder
+sync/atomic
+internal/goos
 unicode/utf8
+internal/runtime/atomic
+internal/cpu
 internal/runtime/syscall
-log/internal
+unicode
 internal/goexperiment
-internal/abi
-internal/goos
 runtime/internal/math
-internal/nettrace
-internal/godebugs
-math/bits
-internal/coverage/rtcov
-internal/runtime/atomic
-internal/byteorder
-unicode
-sync/atomic
-internal/cpu
-internal/profilerecord
+internal/abi
 runtime/internal/sys
 internal/chacha8rand
-internal/runtime/exithook
 internal/bytealg
+internal/runtime/exithook
 math
 internal/stringslite
 runtime
-internal/reflectlite
-sync
 iter
 internal/weak
+internal/reflectlite
+sync
 slices
 internal/bisect
 internal/singleflight
@@ -365,37 +401,37 @@
 runtime/cgo
 internal/godebug
 errors
-sort
-io
-strconv
-bytes
-vendor/golang.org/x/net/dns/dnsmessage
 internal/oserror
-math/rand/v2
+vendor/golang.org/x/net/dns/dnsmessage
 path
-strings
+io
+math/rand/v2
+sort
+strconv
 syscall
 internal/concurrent
+bytes
+strings
 unique
-reflect
 net/netip
+reflect
 bufio
 regexp/syntax
 internal/syscall/execenv
 internal/syscall/unix
 time
 regexp
-io/fs
 context
+io/fs
 internal/poll
 internal/filepathlite
 internal/fmtsort
 os
-fmt
-net
 io/ioutil
-path/filepath
 os/signal
+path/filepath
+fmt
+net
 os/exec
 log
 net/url
@@ -404,14 +440,14 @@
 log/syslog
 github.com/kardianos/service
    dh_auto_test -O--buildsystem=golang
-	cd obj-x86_64-linux-gnu && go test -vet=off -v -p 20 github.com/kardianos/service
+	cd obj-x86_64-linux-gnu && go test -vet=off -v -p 42 github.com/kardianos/service
 === RUN   TestPlatformName
     name_test.go:15: Platform is linux-systemd
 --- PASS: TestPlatformName (0.00s)
 === RUN   Test_isInContainer
 === RUN   Test_isInContainer/docker
 === RUN   Test_isInContainer/linux
---- PASS: Test_isInContainer (0.01s)
+--- PASS: Test_isInContainer (0.00s)
     --- PASS: Test_isInContainer/docker (0.00s)
     --- PASS: Test_isInContainer/linux (0.00s)
 === RUN   Test_isInteractive
@@ -488,12 +524,12 @@
     service_nosu_test.go:12: skipping test as not running as root/admin (Build tag: su)
 --- SKIP: TestInstallRunRestartStopRemove (0.00s)
 === RUN   TestRunInterrupt
---- PASS: TestRunInterrupt (1.04s)
+--- PASS: TestRunInterrupt (1.00s)
 === RUN   TestUserRunInterrupt
     service_test.go:49: env "TEST_USER_INSTALL" is not set to 1
 --- SKIP: TestUserRunInterrupt (0.00s)
 PASS
-ok  	github.com/kardianos/service	1.092s
+ok  	github.com/kardianos/service	1.008s
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=golang
    dh_prep -O--buildsystem=golang
@@ -520,12 +556,14 @@
 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/1891898/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/1891898/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/1368770 and its subdirectories
-I: Current time: Wed Feb  5 13:51:45 -12 2025
-I: pbuilder-time-stamp: 1738806705
+I: removing directory /srv/workspace/pbuilder/1891898 and its subdirectories
+I: Current time: Wed Mar 11 22:15:40 +14 2026
+I: pbuilder-time-stamp: 1773216940