Diff of the two buildlogs:

--
--- b1/build.log	2024-04-21 15:12:24.975053473 +0000
+++ b2/build.log	2024-04-21 15:13:18.528768925 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Apr 21 03:11:11 -12 2024
-I: pbuilder-time-stamp: 1713712271
+I: Current time: Sun May 25 11:35:29 +14 2025
+I: pbuilder-time-stamp: 1748122529
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -26,54 +26,86 @@
 dpkg-source: info: unpacking golang-github-masterminds-vcs-dev_1.12.0-4.debian.tar.xz
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/59300/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/89356/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos6-i386.
+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 May 24 21:35 /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/89356/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/89356/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='i386'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=11 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='i386'
+  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]="i686-pc-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=i386
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=21 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=i686
+  HOST_ARCH=i386
   IFS=' 	
   '
-  INVOCATION_ID='c4b46c3acf814cbe80a1db5c5b254b58'
-  LANG='C'
-  LANGUAGE='en_US:en'
-  LC_ALL='C'
-  LD_LIBRARY_PATH='/usr/lib/libeatmydata'
-  LD_PRELOAD='libeatmydata.so'
-  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='59300'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=18bd19d40948461d93ec08e265957eb0
+  LANG=C
+  LANGUAGE=de_CH:de
+  LC_ALL=C
+  LD_LIBRARY_PATH=/usr/lib/libeatmydata
+  LD_PRELOAD=libeatmydata.so
+  MACHTYPE=i686-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=89356
   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.C32Q0v8s/pbuilderrc_rbaB --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.C32Q0v8s/b1 --logfile b1/build.log golang-github-masterminds-vcs-dev_1.12.0-4.dsc'
-  SUDO_GID='112'
-  SUDO_UID='107'
-  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.C32Q0v8s/pbuilderrc_bHXN --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.C32Q0v8s/b2 --logfile b2/build.log golang-github-masterminds-vcs-dev_1.12.0-4.dsc'
+  SUDO_GID=112
+  SUDO_UID=107
+  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 ionos12-i386 6.1.0-20-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.85-1 (2024-04-11) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-20-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.85-1 (2024-04-11) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Apr 21 07:12 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/59300/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May 24 13:35 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/89356/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -204,7 +236,7 @@
 Get: 81 http://deb.debian.org/debian trixie/main i386 mercurial-common all 6.7.2-1 [2838 kB]
 Get: 82 http://deb.debian.org/debian trixie/main i386 mercurial i386 6.7.2-1 [380 kB]
 Get: 83 http://deb.debian.org/debian trixie/main i386 subversion i386 1.14.3-1+b1 [968 kB]
-Fetched 91.8 MB in 2s (59.7 MB/s)
+Fetched 91.8 MB in 1s (71.1 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libpython3.11-minimal:i386.
 (Reading database ... 
(Reading database ... 5%
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(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19874 files and directories currently installed.)
@@ -484,8 +516,8 @@
 Setting up tzdata (2024a-1) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Sun Apr 21 15:11:46 UTC 2024.
-Universal Time is now:  Sun Apr 21 15:11:46 UTC 2024.
+Local time is now:      Sat May 24 21:35:53 UTC 2025.
+Universal Time is now:  Sat May 24 21:35:53 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up liberror-perl (0.17029-2) ...
@@ -568,7 +600,11 @@
 fakeroot is already the newest version (1.33-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-masterminds-vcs-dev-1.12.0/ && 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-masterminds-vcs-dev_1.12.0-4_source.changes
+I: user script /srv/workspace/pbuilder/89356/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/89356/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-masterminds-vcs-dev-1.12.0/ && 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-masterminds-vcs-dev_1.12.0-4_source.changes
 dpkg-buildpackage: info: source package golang-github-masterminds-vcs-dev
 dpkg-buildpackage: info: source version 1.12.0-4
 dpkg-buildpackage: info: source distribution unstable
@@ -586,70 +622,70 @@
    dh_autoreconf -O--buildsystem=golang
    dh_auto_configure -O--buildsystem=golang
    dh_auto_build -O--buildsystem=golang
-	cd obj-i686-linux-gnu && go install -trimpath -v -p 11 github.com/Masterminds/vcs
+	cd obj-i686-linux-gnu && go install -trimpath -v -p 21 github.com/Masterminds/vcs
 internal/goarch
+unicode/utf8
+encoding
+unicode
+internal/itoa
+container/list
+crypto/internal/alias
 internal/godebugs
+log/internal
+internal/coverage/rtcov
+math/bits
+internal/cpu
+runtime/internal/syscall
+sync/atomic
 internal/unsafeheader
+runtime/internal/atomic
 internal/goos
-internal/coverage/rtcov
-internal/race
 internal/goexperiment
-internal/cpu
+internal/race
+unicode/utf16
+cmp
 internal/abi
-unicode
 runtime/internal/math
-internal/chacha8rand
-runtime/internal/syscall
-unicode/utf8
-encoding
 runtime/internal/sys
-runtime/internal/atomic
-sync/atomic
-math/bits
-internal/itoa
-cmp
-unicode/utf16
-log/internal
-container/list
-crypto/internal/alias
+internal/chacha8rand
 vendor/golang.org/x/crypto/cryptobyte/asn1
 crypto/internal/boring/sig
-internal/nettrace
 vendor/golang.org/x/crypto/internal/alias
-internal/bytealg
+internal/nettrace
 slices
 math
+internal/bytealg
 runtime
 crypto/subtle
 internal/reflectlite
 sync
 internal/testlog
-internal/bisect
 internal/singleflight
+internal/bisect
 runtime/cgo
+internal/godebug
 errors
 sort
-internal/godebug
 internal/oserror
-vendor/golang.org/x/net/dns/dnsmessage
-path
 internal/safefilepath
+path
+internal/intern
 io
+vendor/golang.org/x/net/dns/dnsmessage
+math/rand
 strconv
 crypto/internal/nistec/fiat
-internal/intern
-math/rand
 syscall
 hash
-strings
-bytes
 crypto/internal/randutil
+bytes
+strings
 hash/crc32
-crypto
+vendor/golang.org/x/text/transform
 crypto/rc4
+crypto
 net/netip
 reflect
-vendor/golang.org/x/text/transform
 net/http/internal/ascii
 bufio
 regexp/syntax
@@ -665,58 +701,58 @@
 encoding/binary
 os
 encoding/base64
-crypto/cipher
 crypto/internal/edwards25519/field
-vendor/golang.org/x/crypto/internal/poly1305
 crypto/md5
+crypto/cipher
+vendor/golang.org/x/crypto/internal/poly1305
 encoding/pem
 crypto/internal/edwards25519
 crypto/internal/boring
-vendor/golang.org/x/crypto/chacha20
 crypto/des
-crypto/ecdh
-crypto/sha512
-crypto/hmac
+vendor/golang.org/x/crypto/chacha20
 crypto/sha1
 crypto/aes
 crypto/sha256
+crypto/hmac
+crypto/sha512
+crypto/ecdh
 vendor/golang.org/x/crypto/chacha20poly1305
 vendor/golang.org/x/crypto/hkdf
 io/ioutil
-fmt
 path/filepath
+fmt
 net
 os/exec
+net/http/internal
 log
 encoding/hex
 net/url
-encoding/xml
 encoding/json
-vendor/golang.org/x/net/http2/hpack
 compress/flate
-vendor/golang.org/x/text/unicode/norm
+encoding/xml
+mime/quotedprintable
+vendor/golang.org/x/net/http2/hpack
 mime
 math/big
-mime/quotedprintable
-net/http/internal
+vendor/golang.org/x/text/unicode/norm
 vendor/golang.org/x/text/unicode/bidi
 compress/gzip
 vendor/golang.org/x/text/secure/bidirule
 vendor/golang.org/x/net/idna
-crypto/rand
-crypto/internal/bigmod
 crypto/internal/boring/bbig
-crypto/elliptic
 crypto/dsa
+crypto/rand
 encoding/asn1
+crypto/internal/bigmod
+crypto/elliptic
 crypto/ed25519
 crypto/rsa
-vendor/golang.org/x/crypto/cryptobyte
 crypto/x509/pkix
+vendor/golang.org/x/crypto/cryptobyte
 crypto/ecdsa
+vendor/golang.org/x/net/http/httpproxy
 net/textproto
 crypto/x509
-vendor/golang.org/x/net/http/httpproxy
 vendor/golang.org/x/net/http/httpguts
 mime/multipart
 crypto/tls
@@ -759,12 +795,14 @@
 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/89356/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/89356/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/59300 and its subdirectories
-I: Current time: Sun Apr 21 03:12:24 -12 2024
-I: pbuilder-time-stamp: 1713712344
+I: removing directory /srv/workspace/pbuilder/89356 and its subdirectories
+I: Current time: Sun May 25 11:36:17 +14 2025
+I: pbuilder-time-stamp: 1748122577