Diff of the two buildlogs:

--
--- b1/build.log	2025-03-21 18:11:41.440970258 +0000
+++ b2/build.log	2025-03-21 18:12:48.161955409 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Fri Mar 21 06:10:12 -12 2025
-I: pbuilder-time-stamp: 1742580612
+I: Current time: Fri Apr 24 14:34:44 +14 2026
+I: pbuilder-time-stamp: 1776990884
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -25,54 +25,86 @@
 dpkg-source: info: applying 0001-Revert-alecthomas-kingpin-import-path.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/4661/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/63468/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 Apr 24 00:34 /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/63468/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/63468/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]="37" [3]="1" [4]="release" [5]="i686-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=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='03eb765e7a80420294994ad9d3d5a5b7'
-  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='4661'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=e3bb61e06cb243cb8381428a6c245e32
+  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=63468
   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.kauImwSh/pbuilderrc_BxQC --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.kauImwSh/b1 --logfile b1/build.log rdap_0.9.1-3.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://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.kauImwSh/pbuilderrc_yY5k --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.kauImwSh/b2 --logfile b2/build.log rdap_0.9.1-3.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://213.165.73.152:3128
 I: uname -a
-  Linux ionos2-i386 6.1.0-32-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.129-1 (2025-03-06) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-32-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.129-1 (2025-03-06) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Mar  4 11:20 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/4661/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/63468/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -172,7 +204,7 @@
 Get: 48 http://deb.debian.org/debian trixie/main i386 golang-golang-x-text-dev all 0.22.0-1 [3995 kB]
 Get: 49 http://deb.debian.org/debian trixie/main i386 golang-golang-x-crypto-dev all 1:0.25.0-1 [1682 kB]
 Get: 50 http://deb.debian.org/debian trixie/main i386 golang-gopkg-alecthomas-kingpin.v2-dev all 2.2.6-4 [42.8 kB]
-Fetched 75.5 MB in 1s (72.1 MB/s)
+Fetched 75.5 MB in 1s (108 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 ... 19771 files and directories currently installed.)
@@ -387,7 +419,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/rdap-0.9.1/ && 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  > ../rdap_0.9.1-3_source.changes
+I: user script /srv/workspace/pbuilder/63468/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/63468/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/rdap-0.9.1/ && 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  > ../rdap_0.9.1-3_source.changes
 dpkg-buildpackage: info: source package rdap
 dpkg-buildpackage: info: source version 0.9.1-3
 dpkg-buildpackage: info: source distribution unstable
@@ -405,108 +441,108 @@
    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 11 github.com/openrdap/rdap github.com/openrdap/rdap/bootstrap github.com/openrdap/rdap/bootstrap/cache github.com/openrdap/rdap/cmd/rdap github.com/openrdap/rdap/sandbox github.com/openrdap/rdap/test
-internal/godebugs
-internal/goarch
-internal/asan
-internal/goos
-internal/coverage/rtcov
-internal/unsafeheader
-internal/byteorder
+	cd _build && go install -trimpath -v -p 21 github.com/openrdap/rdap github.com/openrdap/rdap/bootstrap github.com/openrdap/rdap/bootstrap/cache github.com/openrdap/rdap/cmd/rdap github.com/openrdap/rdap/sandbox github.com/openrdap/rdap/test
 internal/profilerecord
-internal/cpu
+internal/goos
+internal/itoa
 internal/msan
+internal/byteorder
+unicode/utf8
+internal/coverage/rtcov
+internal/runtime/syscall
+math/bits
 internal/runtime/atomic
+internal/cpu
+internal/asan
 internal/goexperiment
-internal/runtime/syscall
+crypto/internal/fips140/alias
+internal/goarch
 sync/atomic
-internal/runtime/math
-internal/abi
-internal/runtime/sys
-math/bits
-unicode
-unicode/utf8
-internal/chacha8rand
-internal/itoa
 container/list
-crypto/internal/fips140/alias
-crypto/internal/fips140deps/byteorder
+internal/godebugs
+internal/unsafeheader
 cmp
 crypto/internal/boring/sig
-math
+unicode
 unicode/utf16
 vendor/golang.org/x/crypto/cryptobyte/asn1
-internal/bytealg
-internal/runtime/exithook
-crypto/internal/fips140deps/cpu
 vendor/golang.org/x/crypto/internal/alias
 internal/nettrace
 encoding
 log/internal
+internal/runtime/math
+internal/runtime/sys
+internal/abi
+crypto/internal/fips140deps/byteorder
+internal/chacha8rand
+math
+internal/runtime/exithook
+crypto/internal/fips140deps/cpu
+internal/bytealg
 internal/stringslite
 internal/race
 internal/sync
 internal/runtime/maps
 runtime
+crypto/internal/fips140/subtle
 iter
-internal/reflectlite
 sync
-crypto/internal/fips140/subtle
 weak
+internal/reflectlite
 maps
 slices
 crypto/subtle
+errors
+sort
+internal/testlog
 internal/bisect
 internal/singleflight
 unique
-internal/testlog
-errors
-sort
 runtime/cgo
+internal/oserror
 io
 math/rand/v2
+path
 vendor/golang.org/x/net/dns/dnsmessage
 strconv
-internal/oserror
-internal/godebug
-path
 syscall
-hash
+internal/godebug
 bytes
-strings
 crypto/internal/randutil
+hash
+strings
 hash/crc32
 crypto/internal/fips140deps/godebug
 math/rand
+crypto
+net/netip
+reflect
 vendor/golang.org/x/text/transform
 crypto/internal/impl
-crypto/internal/fips140
 net/http/internal/ascii
+crypto/internal/fips140
 bufio
-crypto
-net/netip
 regexp/syntax
-reflect
 crypto/internal/fips140/sha256
-crypto/internal/fips140/sha3
-crypto/internal/fips140/sha512
 crypto/tls/internal/fips140tls
+crypto/internal/fips140/sha512
+crypto/internal/fips140/sha3
+internal/syscall/execenv
+internal/syscall/unix
+time
 crypto/internal/fips140/hmac
 crypto/sha3
 crypto/internal/fips140/check
 crypto/internal/fips140hash
+crypto/internal/fips140/hkdf
+crypto/internal/fips140/tls12
 crypto/internal/fips140/edwards25519/field
 crypto/internal/fips140/bigmod
-crypto/internal/fips140/hkdf
 crypto/internal/fips140/aes
 crypto/internal/fips140/nistec/fiat
-crypto/internal/fips140/tls12
+regexp
 crypto/internal/fips140/tls13
 crypto/internal/fips140/edwards25519
-regexp
-internal/syscall/execenv
-internal/syscall/unix
-time
 context
 io/fs
 internal/poll
@@ -519,72 +555,72 @@
 encoding/base64
 encoding/pem
 crypto/internal/sysrand
-path/filepath
-fmt
 internal/lazyregexp
 io/ioutil
+path/filepath
+fmt
 net
 crypto/internal/entropy
 crypto/internal/fips140/drbg
 crypto/internal/fips140only
+crypto/internal/fips140/ed25519
 crypto/internal/fips140/mlkem
 crypto/internal/fips140/aes/gcm
-crypto/internal/fips140/ed25519
 crypto/internal/fips140/rsa
 os/exec
-crypto/md5
 crypto/rc4
+crypto/md5
 crypto/cipher
-github.com/mitchellh/go-homedir
+crypto/internal/boring
+crypto/des
 crypto/internal/fips140/ecdh
+vendor/golang.org/x/crypto/chacha20
+golang.org/x/crypto/pkcs12/internal/rc2
 crypto/internal/fips140/ecdsa
-encoding/hex
-net/url
-math/big
-crypto/internal/boring
-vendor/golang.org/x/text/unicode/norm
-encoding/json
-log
-github.com/openrdap/rdap/bootstrap/cache
-compress/flate
+github.com/mitchellh/go-homedir
 crypto/aes
-crypto/des
-crypto/ecdh
-crypto/sha512
 crypto/hmac
-vendor/golang.org/x/crypto/chacha20
 crypto/sha1
+crypto/sha512
 crypto/sha256
-vendor/golang.org/x/text/unicode/bidi
-vendor/golang.org/x/net/http2/hpack
-mime
+crypto/ecdh
 vendor/golang.org/x/crypto/chacha20poly1305
+encoding/hex
+net/url
+github.com/openrdap/rdap/bootstrap/cache
+log
+encoding/json
+vendor/golang.org/x/text/unicode/norm
+go/token
+mime
+vendor/golang.org/x/net/http2/hpack
 mime/quotedprintable
 net/http/internal
-compress/gzip
-github.com/openrdap/rdap/sandbox
-golang.org/x/crypto/pkcs12/internal/rc2
 github.com/alecthomas/units
-go/token
 go/doc/comment
-text/template/parse
+compress/flate
 encoding/xml
+text/template/parse
+math/big
 go/scanner
+github.com/openrdap/rdap/sandbox
+vendor/golang.org/x/text/unicode/bidi
+compress/gzip
+go/ast
 vendor/golang.org/x/text/secure/bidirule
+text/template
 vendor/golang.org/x/net/idna
-go/ast
-crypto/elliptic
+go/doc
 crypto/internal/boring/bbig
-crypto/rand
 crypto/dsa
+crypto/elliptic
+crypto/rand
 encoding/asn1
-text/template
 crypto/ed25519
-crypto/rsa
 crypto/internal/hpke
+crypto/rsa
 crypto/x509/pkix
 vendor/golang.org/x/crypto/cryptobyte
-go/doc
 crypto/ecdsa
 vendor/golang.org/x/net/http/httpproxy
 net/textproto
@@ -603,7 +639,7 @@
 github.com/openrdap/rdap/test
 github.com/openrdap/rdap/cmd/rdap
    dh_auto_test -O--builddirectory=_build -O--buildsystem=golang
-	cd _build && go test -vet=off -v -p 11 github.com/openrdap/rdap github.com/openrdap/rdap/bootstrap github.com/openrdap/rdap/bootstrap/cache github.com/openrdap/rdap/cmd/rdap github.com/openrdap/rdap/sandbox github.com/openrdap/rdap/test
+	cd _build && go test -vet=off -v -p 21 github.com/openrdap/rdap github.com/openrdap/rdap/bootstrap github.com/openrdap/rdap/bootstrap/cache github.com/openrdap/rdap/cmd/rdap github.com/openrdap/rdap/sandbox github.com/openrdap/rdap/test
 === RUN   TestClientQueryDomain
 # 
 # client: Running...
@@ -620,7 +656,7 @@
 #   bootstrap: Service URL #1: 'https://rdap.nic.cz'
 # client: RDAP URL #0 is https://rdap.nic.cz/domain/example.cz
 # client: GET https://rdap.nic.cz/domain/example.cz
-# client: status-code=200, content-type=, length=3501 bytes, duration=37.803µs
+# client: status-code=200, content-type=, length=3501 bytes, duration=33.767µs
 # client: Successfully decoded response
 --- PASS: TestClientQueryDomain (0.00s)
 === RUN   TestClientQueryDomain404
@@ -639,7 +675,7 @@
 #   bootstrap: Service URL #1: 'https://rdap.nic.cz'
 # client: RDAP URL #0 is https://rdap.nic.cz/domain/non-existent.cz
 # client: GET https://rdap.nic.cz/domain/non-existent.cz
-# client: status-code=404, content-type=, length=0 bytes, duration=25.655µs
+# client: status-code=404, content-type=, length=0 bytes, duration=20.184µs
 --- PASS: TestClientQueryDomain404 (0.00s)
 === RUN   TestClientQueryDomainWrongType
 # 
@@ -657,7 +693,7 @@
 #   bootstrap: Service URL #1: 'https://rdap.nic.cz'
 # client: RDAP URL #0 is https://rdap.nic.cz/domain/wrong-response-type.cz
 # client: GET https://rdap.nic.cz/domain/wrong-response-type.cz
-# client: status-code=200, content-type=, length=821 bytes, duration=39.734µs
+# client: status-code=200, content-type=, length=821 bytes, duration=40.576µs
 # client: Successfully decoded response
 --- PASS: TestClientQueryDomainWrongType (0.00s)
 === RUN   TestClientQueryDomainMalformed
@@ -676,7 +712,7 @@
 #   bootstrap: Service URL #1: 'https://rdap.nic.cz'
 # client: RDAP URL #0 is https://rdap.nic.cz/domain/malformed.cz
 # client: GET https://rdap.nic.cz/domain/malformed.cz
-# client: status-code=200, content-type=, length=9 bytes, duration=30.56µs
+# client: status-code=200, content-type=, length=9 bytes, duration=20.731µs
 # client: Error decoding response: invalid character '<' looking for beginning of object key string
 --- PASS: TestClientQueryDomainMalformed (0.00s)
 === RUN   TestDecodeEmpty
@@ -755,7 +791,7 @@
 === RUN   Example
 --- PASS: Example (0.00s)
 PASS
-ok  	github.com/openrdap/rdap	0.018s
+ok  	github.com/openrdap/rdap	0.013s
 === RUN   TestNetRegistryLookupsASN
 --- PASS: TestNetRegistryLookupsASN (0.00s)
 === RUN   TestDownload
@@ -786,19 +822,19 @@
 === RUN   TestServiceProviderRegistryLookups
 --- PASS: TestServiceProviderRegistryLookups (0.00s)
 PASS
-ok  	github.com/openrdap/rdap/bootstrap	0.018s
+ok  	github.com/openrdap/rdap/bootstrap	0.017s
 === RUN   TestDiskCache
---- PASS: TestDiskCache (1.00s)
+--- PASS: TestDiskCache (1.02s)
 === RUN   TestMemoryCache
 --- PASS: TestMemoryCache (0.00s)
 PASS
-ok  	github.com/openrdap/rdap/bootstrap/cache	1.009s
+ok  	github.com/openrdap/rdap/bootstrap/cache	1.022s
 ?   	github.com/openrdap/rdap/cmd/rdap	[no test files]
 ?   	github.com/openrdap/rdap/sandbox	[no test files]
 === RUN   TestSmoke
 --- PASS: TestSmoke (0.00s)
 PASS
-ok  	github.com/openrdap/rdap/test	0.008s
+ok  	github.com/openrdap/rdap/test	0.007s
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--builddirectory=_build -O--buildsystem=golang
    dh_prep -O--builddirectory=_build -O--buildsystem=golang
@@ -836,12 +872,14 @@
 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/63468/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/63468/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/4661 and its subdirectories
-I: Current time: Fri Mar 21 06:11:40 -12 2025
-I: pbuilder-time-stamp: 1742580700
+I: removing directory /srv/workspace/pbuilder/63468 and its subdirectories
+I: Current time: Fri Apr 24 14:35:47 +14 2026
+I: pbuilder-time-stamp: 1776990947