Diff of the two buildlogs:

--
--- b1/build.log	2024-04-12 14:55:13.329345536 +0000
+++ b2/build.log	2024-04-12 14:57:23.375802249 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu May 15 09:17:06 -12 2025
-I: pbuilder-time-stamp: 1747343826
+I: Current time: Sat Apr 13 04:55:15 +14 2024
+I: pbuilder-time-stamp: 1712933715
 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-rubenv-sql-migrate_0.0~git20191213.0633851-3.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/20248/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/47833/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos12-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 Apr 12 14:55 /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/47833/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/47833/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=22 '
-  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=10 '
+  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='a6cef6bcc6c9419ebcacba0cf9692b80'
-  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='20248'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=379806319c2244c69fc86d6ce3d5740c
+  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=47833
   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.IN6ecKhJ/pbuilderrc_Z9CG --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.IN6ecKhJ/b1 --logfile b1/build.log golang-github-rubenv-sql-migrate_0.0~git20191213.0633851-3.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://85.184.249.68:3128'
+  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.IN6ecKhJ/pbuilderrc_JMdM --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.IN6ecKhJ/b2 --logfile b2/build.log golang-github-rubenv-sql-migrate_0.0~git20191213.0633851-3.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://78.137.99.97:3128
 I: uname -a
-  Linux ionos16-i386 6.1.0-18-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.76-1 (2024-02-01) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-18-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.76-1 (2024-02-01) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 May 15 17:46 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/20248/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Apr 10 11:24 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/47833/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -215,7 +247,7 @@
 Get: 82 http://deb.debian.org/debian trixie/main i386 golang-gopkg-check.v1-dev all 0.0+git20200902.038fdea-1 [32.1 kB]
 Get: 83 http://deb.debian.org/debian trixie/main i386 golang-gopkg-gorp.v1-dev all 1.7.2-2 [27.8 kB]
 Get: 84 http://deb.debian.org/debian trixie/main i386 golang-gopkg-yaml.v2-dev all 2.4.0-4 [61.5 kB]
-Fetched 72.6 MB in 1s (55.1 MB/s)
+Fetched 72.6 MB in 2s (29.4 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 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 ... 19874 files and directories currently installed.)
@@ -566,7 +598,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-rubenv-sql-migrate-0.0~git20191213.0633851/ && 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-rubenv-sql-migrate_0.0~git20191213.0633851-3_source.changes
+I: user script /srv/workspace/pbuilder/47833/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/47833/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-rubenv-sql-migrate-0.0~git20191213.0633851/ && 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-rubenv-sql-migrate_0.0~git20191213.0633851-3_source.changes
 dpkg-buildpackage: info: source package golang-github-rubenv-sql-migrate
 dpkg-buildpackage: info: source version 0.0~git20191213.0633851-3
 dpkg-buildpackage: info: source distribution unstable
@@ -584,77 +620,77 @@
    dh_autoreconf -O--builddirectory=_build -O--buildsystem=golang
    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 22 github.com/rubenv/sql-migrate github.com/rubenv/sql-migrate/sql-migrate github.com/rubenv/sql-migrate/sqlparse
-unicode/utf16
-internal/goarch
+	cd _build && go install -trimpath -v -p 10 github.com/rubenv/sql-migrate github.com/rubenv/sql-migrate/sql-migrate github.com/rubenv/sql-migrate/sqlparse
+internal/godebugs
 internal/goos
-vendor/golang.org/x/crypto/cryptobyte/asn1
-cmp
-crypto/internal/alias
-log/internal
-container/list
-internal/race
-math/bits
+internal/goarch
 internal/unsafeheader
-unicode/utf8
-crypto/internal/boring/sig
+internal/goexperiment
 runtime/internal/syscall
-internal/itoa
-runtime/internal/atomic
-internal/coverage/rtcov
-internal/godebugs
+internal/race
 internal/cpu
-internal/goexperiment
+internal/coverage/rtcov
+runtime/internal/atomic
 sync/atomic
+internal/abi
+internal/chacha8rand
+runtime/internal/math
+runtime/internal/sys
+unicode/utf8
 unicode
+internal/itoa
+cmp
+math/bits
+log/internal
+container/list
+crypto/internal/alias
+crypto/internal/boring/sig
+internal/bytealg
+vendor/golang.org/x/crypto/cryptobyte/asn1
+unicode/utf16
 internal/nettrace
 vendor/golang.org/x/crypto/internal/alias
-runtime/internal/math
-internal/chacha8rand
-runtime/internal/sys
-internal/abi
 encoding
 github.com/lib/pq/oid
 slices
-math
 github.com/rivo/uniseg
-internal/bytealg
+math
 runtime
 crypto/subtle
 internal/reflectlite
 sync
 internal/testlog
-internal/singleflight
 internal/bisect
+internal/singleflight
 runtime/cgo
-internal/godebug
 errors
 sort
 internal/oserror
 io
-internal/safefilepath
-vendor/golang.org/x/net/dns/dnsmessage
-internal/intern
-path
-math/rand
+internal/godebug
 strconv
-crypto/internal/nistec/fiat
-syscall
-crypto/internal/randutil
+vendor/golang.org/x/net/dns/dnsmessage
 hash
 strings
+internal/safefilepath
+path
 bytes
+syscall
+crypto/internal/nistec/fiat
 hash/crc32
-vendor/golang.org/x/text/transform
-net/http/internal/ascii
-bufio
-github.com/armon/go-radix
+crypto/internal/randutil
 crypto
+reflect
+math/rand
 crypto/rc4
-net/netip
+internal/intern
+bufio
 regexp/syntax
-reflect
+vendor/golang.org/x/text/transform
+net/netip
+net/http/internal/ascii
 golang.org/x/crypto/md4
+github.com/armon/go-radix
 internal/syscall/execenv
 internal/syscall/unix
 time
@@ -663,93 +699,93 @@
 context
 io/fs
 internal/poll
-golang.org/x/net/context
-github.com/hashicorp/errwrap
 internal/fmtsort
 encoding/binary
-os
+github.com/hashicorp/errwrap
+golang.org/x/net/context
 crypto/internal/edwards25519/field
-encoding/base64
 crypto/cipher
-crypto/md5
+encoding/base64
 vendor/golang.org/x/crypto/internal/poly1305
+crypto/md5
+os
 golang.org/x/sys/unix
 encoding/pem
 crypto/internal/edwards25519
+crypto/internal/boring
 crypto/des
 vendor/golang.org/x/crypto/chacha20
-crypto/internal/boring
-crypto/hmac
-crypto/ecdh
-crypto/sha512
 crypto/aes
-crypto/sha256
+crypto/sha512
 crypto/sha1
-vendor/golang.org/x/crypto/chacha20poly1305
+crypto/ecdh
+crypto/hmac
+crypto/sha256
 vendor/golang.org/x/crypto/hkdf
-io/ioutil
-os/signal
-github.com/mattn/go-runewidth
+vendor/golang.org/x/crypto/chacha20poly1305
 path/filepath
+github.com/mattn/go-runewidth
 fmt
+io/ioutil
+os/signal
 net
-github.com/rubenv/sql-migrate/sqlparse
 database/sql/driver
-encoding/hex
-net/url
 log
-flag
-net/http/internal
-mime/quotedprintable
-os/user
-mime
-vendor/golang.org/x/net/http2/hpack
 compress/flate
-text/template/parse
-encoding/csv
-github.com/bgentry/speakeasy
-encoding/json
-github.com/hashicorp/go-multierror
+github.com/rubenv/sql-migrate/sqlparse
+encoding/hex
+net/url
 math/big
-gopkg.in/yaml.v2
 vendor/golang.org/x/text/unicode/norm
-github.com/olekukonko/tablewriter
-database/sql
+vendor/golang.org/x/net/http2/hpack
+mime
 vendor/golang.org/x/text/unicode/bidi
+database/sql
+mime/quotedprintable
+net/http/internal
+flag
 compress/gzip
-text/template
+encoding/json
+os/user
+github.com/bgentry/speakeasy
 vendor/golang.org/x/text/secure/bidirule
+github.com/hashicorp/go-multierror
+text/template/parse
+encoding/csv
 github.com/mattn/go-isatty
+gopkg.in/yaml.v2
+github.com/olekukonko/tablewriter
 github.com/mattn/go-colorable
-vendor/golang.org/x/net/idna
 gopkg.in/gorp.v1
+vendor/golang.org/x/net/idna
 github.com/mattn/go-sqlite3
 github.com/fatih/color
-crypto/internal/boring/bbig
+text/template
 crypto/rand
-crypto/dsa
 crypto/elliptic
 crypto/internal/bigmod
+crypto/internal/boring/bbig
 encoding/asn1
 crypto/ed25519
-github.com/lib/pq/scram
+crypto/dsa
 crypto/rsa
-github.com/posener/complete/cmd/install
+github.com/lib/pq/scram
 crypto/x509/pkix
 vendor/golang.org/x/crypto/cryptobyte
+crypto/ecdsa
+github.com/posener/complete/cmd/install
 github.com/posener/complete/cmd
 github.com/posener/complete
 github.com/mitchellh/cli
-crypto/ecdsa
 net/textproto
-vendor/golang.org/x/net/http/httpproxy
 crypto/x509
+vendor/golang.org/x/net/http/httpproxy
 vendor/golang.org/x/net/http/httpguts
 mime/multipart
 crypto/tls
 net/http/httptrace
-github.com/go-sql-driver/mysql
 github.com/lib/pq
+github.com/go-sql-driver/mysql
 github.com/denisenkom/go-mssqldb
 net/http
 github.com/rubenv/sql-migrate
@@ -758,7 +794,7 @@
 make[1]: Entering directory '/build/reproducible-path/golang-github-rubenv-sql-migrate-0.0~git20191213.0633851'
 # Test dependency github.com/gobuffalo/packr/v2 is not packaged
 dh_auto_test
-	cd _build && go test -vet=off -v -p 22 github.com/rubenv/sql-migrate github.com/rubenv/sql-migrate/sql-migrate github.com/rubenv/sql-migrate/sqlparse
+	cd _build && go test -vet=off -v -p 10 github.com/rubenv/sql-migrate github.com/rubenv/sql-migrate/sql-migrate github.com/rubenv/sql-migrate/sqlparse
 # github.com/rubenv/sql-migrate
 src/github.com/rubenv/sql-migrate/migrate_test.go:7:2: cannot find package "github.com/gobuffalo/packr/v2" in any of:
 	/usr/lib/go-1.22/src/github.com/gobuffalo/packr/v2 (from $GOROOT)
@@ -766,14 +802,14 @@
 FAIL	github.com/rubenv/sql-migrate [setup failed]
 testing: warning: no tests to run
 PASS
-ok  	github.com/rubenv/sql-migrate/sql-migrate	0.008s [no tests to run]
+ok  	github.com/rubenv/sql-migrate/sql-migrate	0.014s [no tests to run]
 === RUN   Test
 OK: 5 passed
 --- PASS: Test (0.00s)
 PASS
-ok  	github.com/rubenv/sql-migrate/sqlparse	0.004s
+ok  	github.com/rubenv/sql-migrate/sqlparse	0.008s
 FAIL
-dh_auto_test: error: cd _build && go test -vet=off -v -p 22 github.com/rubenv/sql-migrate github.com/rubenv/sql-migrate/sql-migrate github.com/rubenv/sql-migrate/sqlparse returned exit code 1
+dh_auto_test: error: cd _build && go test -vet=off -v -p 10 github.com/rubenv/sql-migrate github.com/rubenv/sql-migrate/sql-migrate github.com/rubenv/sql-migrate/sqlparse returned exit code 1
 make[1]: [debian/rules:8: override_dh_auto_test] Error 25 (ignored)
 make[1]: Leaving directory '/build/reproducible-path/golang-github-rubenv-sql-migrate-0.0~git20191213.0633851'
    create-stamp debian/debhelper-build-stamp
@@ -813,12 +849,14 @@
 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/47833/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/47833/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/20248 and its subdirectories
-I: Current time: Thu May 15 09:18:06 -12 2025
-I: pbuilder-time-stamp: 1747343886
+I: removing directory /srv/workspace/pbuilder/47833 and its subdirectories
+I: Current time: Sat Apr 13 04:57:22 +14 2024
+I: pbuilder-time-stamp: 1712933842