Diff of the two buildlogs:

--
--- b1/build.log	2025-01-29 15:01:40.905752004 +0000
+++ b2/build.log	2025-01-29 15:02:59.026218869 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Jan 29 02:58:09 -12 2025
-I: pbuilder-time-stamp: 1738162689
+I: Current time: Wed Mar  4 11:24:44 +14 2026
+I: pbuilder-time-stamp: 1772573084
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -22,52 +22,84 @@
 dpkg-source: info: unpacking go-sendxmpp_0.14.1-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/2608467/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/33897/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink03-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 Mar  3 21:24 /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/33897/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/33897/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='trixie'
-  HOME='/root'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  INVOCATION_ID='2d02f57f2ba140faa1cf92255c6ec2c3'
-  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='2608467'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=2f0d3fddc7074ffd9e9d3855740ecf01
+  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=33897
   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.qhVsE8sS/pbuilderrc_H1KB --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.qhVsE8sS/b1 --logfile b1/build.log go-sendxmpp_0.14.1-1.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.qhVsE8sS/pbuilderrc_HVFX --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.qhVsE8sS/b2 --logfile b2/build.log go-sendxmpp_0.14.1-1.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 codethink04-arm64 6.1.0-30-cloud-arm64 #1 SMP Debian 6.1.124-1 (2025-01-12) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-30-cloud-arm64 #1 SMP Debian 6.1.124-1 (2025-01-12) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/2608467/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/33897/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -233,7 +265,7 @@
 Get: 106 http://deb.debian.org/debian trixie/main arm64 ruby-nokogiri arm64 1.16.4+dfsg-1+b1 [281 kB]
 Get: 107 http://deb.debian.org/debian trixie/main arm64 ruby-ronn all 0.10.1-2 [28.0 kB]
 Get: 108 http://deb.debian.org/debian trixie/main arm64 ronn all 0.10.1-2 [8708 B]
-Fetched 107 MB in 1s (75.2 MB/s)
+Fetched 107 MB in 1s (172 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 ... 19969 files and directories currently installed.)
@@ -689,7 +721,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/go-sendxmpp-0.14.1/ && 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  > ../go-sendxmpp_0.14.1-1_source.changes
+I: user script /srv/workspace/pbuilder/33897/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/33897/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/go-sendxmpp-0.14.1/ && 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  > ../go-sendxmpp_0.14.1-1_source.changes
 dpkg-buildpackage: info: source package go-sendxmpp
 dpkg-buildpackage: info: source version 0.14.1-1
 dpkg-buildpackage: info: source distribution unstable
@@ -711,31 +747,31 @@
 dh_auto_build -O --buildsystem=golang -- -buildmode=pie -ldflags="-extldflags -Wl,-z,now,-z,relro"
 	cd _build && go install -trimpath -v -p 12 -buildmode=pie "-ldflags=-extldflags -Wl,-z,now,-z,relro" salsa.debian.org/mdosch/go-sendxmpp
 internal/coverage/rtcov
-internal/goexperiment
-internal/race
-internal/profilerecord
-internal/godebugs
 internal/goarch
 internal/goos
+internal/godebugs
 internal/unsafeheader
-internal/cpu
-internal/byteorder
-sync/atomic
+internal/runtime/syscall
 unicode
+internal/cpu
 unicode/utf8
 internal/asan
-internal/runtime/syscall
-runtime/internal/math
 internal/itoa
+internal/goexperiment
+internal/byteorder
+internal/race
+internal/profilerecord
+sync/atomic
+internal/abi
+runtime/internal/math
 runtime/internal/sys
 internal/msan
-internal/chacha8rand
 crypto/internal/alias
 crypto/subtle
 math/bits
-internal/abi
-cmp
 crypto/internal/boring/sig
+cmp
+internal/chacha8rand
 container/list
 unicode/utf16
 vendor/golang.org/x/crypto/cryptobyte/asn1
@@ -745,217 +781,217 @@
 github.com/ProtonMail/gopenpgp/v2/constants
 math
 github.com/ProtonMail/go-crypto/internal/byteutil
-image/color
+internal/bytealg
 golang.org/x/text/encoding/internal/identifier
-log/internal
-golang.org/x/net/html/atom
 golang.org/x/text/internal/utf8internal
-internal/bytealg
+log/internal
 internal/runtime/atomic
-internal/runtime/exithook
+golang.org/x/net/html/atom
+image/color
 internal/stringslite
+internal/runtime/exithook
 runtime
 internal/reflectlite
-sync
 iter
 internal/weak
-slices
+sync
 maps
+slices
 internal/bisect
 internal/testlog
 internal/singleflight
 runtime/cgo
 errors
 sort
-internal/godebug
 io
-internal/oserror
-strconv
+internal/godebug
 path
+internal/oserror
 crypto/internal/edwards25519/field
+strconv
 crypto/internal/nistec/fiat
+hash
+crypto/internal/randutil
+strings
+vendor/golang.org/x/net/dns/dnsmessage
 math/rand/v2
 golang.org/x/crypto/cast5
-vendor/golang.org/x/net/dns/dnsmessage
+bytes
 syscall
+crypto
+crypto/rc4
 math/rand
+reflect
 internal/concurrent
-bytes
-strings
-hash
-crypto/internal/randutil
 crypto/internal/edwards25519
+crypto/cipher
 unique
 internal/saferio
-hash/adler32
-golang.org/x/text/internal/tag
-hash/crc32
-crypto
-crypto/rc4
-net/netip
-crypto/cipher
-reflect
-github.com/ProtonMail/go-crypto/openpgp/errors
-golang.org/x/text/transform
-vendor/golang.org/x/text/transform
-crypto/md5
 bufio
+crypto/md5
+github.com/ProtonMail/go-crypto/openpgp/errors
 github.com/cloudflare/circl/sign
-golang.org/x/text/encoding
-golang.org/x/text/runes
-net/http/internal/ascii
+net/netip
+hash/adler32
+golang.org/x/text/transform
 crypto/internal/boring
 crypto/des
 github.com/ProtonMail/go-crypto/eax
-crypto/sha512
+golang.org/x/text/internal/tag
 crypto/aes
+crypto/sha512
 crypto/hmac
 crypto/sha1
 crypto/sha256
 compress/bzip2
+image
+golang.org/x/text/encoding
 vendor/golang.org/x/crypto/hkdf
 golang.org/x/crypto/hkdf
-image
+golang.org/x/text/runes
+hash/crc32
+vendor/golang.org/x/text/transform
+net/http/internal/ascii
 golang.org/x/text/encoding/internal
 regexp/syntax
 golang.org/x/crypto/pbkdf2
 golang.org/x/text/encoding/charmap
 golang.org/x/text/encoding/japanese
-golang.org/x/text/encoding/korean
 golang.org/x/text/encoding/simplifiedchinese
+golang.org/x/text/encoding/korean
 golang.org/x/text/encoding/traditionalchinese
 golang.org/x/text/encoding/unicode
-time
 internal/syscall/unix
+time
 internal/syscall/execenv
 image/internal/imageutil
 image/jpeg
 regexp
 context
-io/fs
 internal/poll
-internal/filepathlite
-embed
+io/fs
 internal/fmtsort
 encoding/binary
+internal/filepathlite
+embed
 crypto/internal/nistec
 os
+encoding/base64
 vendor/golang.org/x/crypto/chacha20
 vendor/golang.org/x/crypto/internal/poly1305
-encoding/base64
-github.com/ProtonMail/go-crypto/openpgp/aes/keywrap
-github.com/cloudflare/circl/internal/sha3
-golang.org/x/crypto/blake2b
 golang.org/x/crypto/scrypt
-crypto/ecdh
+golang.org/x/crypto/blake2b
+github.com/cloudflare/circl/internal/sha3
+github.com/ProtonMail/go-crypto/openpgp/aes/keywrap
 encoding/pem
 github.com/ProtonMail/go-crypto/openpgp/armor
 golang.org/x/crypto/argon2
 vendor/golang.org/x/crypto/chacha20poly1305
+crypto/ecdh
+io/ioutil
 fmt
+os/signal
 vendor/golang.org/x/sys/cpu
 path/filepath
 golang.org/x/sys/cpu
-io/ioutil
-os/signal
+net
 os/exec
-vendor/golang.org/x/crypto/sha3
 golang.org/x/crypto/sha3
-math/big
+vendor/golang.org/x/crypto/sha3
 encoding/hex
 net/url
-encoding/gob
-encoding/xml
-encoding/json
-compress/flate
+mime/quotedprintable
 log
+compress/flate
+encoding/xml
+encoding/gob
 mime
-mime/quotedprintable
+math/big
 golang.org/x/text/internal/language
-github.com/ProtonMail/go-crypto/ocb
+encoding/json
 vendor/golang.org/x/text/unicode/norm
-github.com/ProtonMail/go-crypto/openpgp/internal/algorithm
+github.com/ProtonMail/go-crypto/ocb
 vendor/golang.org/x/text/unicode/bidi
+github.com/ProtonMail/go-crypto/openpgp/internal/algorithm
 vendor/golang.org/x/net/http2/hpack
 github.com/ProtonMail/go-crypto/openpgp/s2k
 net/http/internal
 compress/zlib
 compress/gzip
 github.com/pkg/errors
+golang.org/x/text/internal/language/compact
 runtime/debug
 golang.org/x/net/html
 debug/dwarf
+vendor/golang.org/x/text/secure/bidirule
 github.com/ProtonMail/gopenpgp/v2/internal
+github.com/beevik/etree
 github.com/ProtonMail/gopenpgp/v2/armor
-vendor/golang.org/x/text/secure/bidirule
 encoding/csv
-golang.org/x/text/internal/language/compact
+vendor/golang.org/x/net/idna
+golang.org/x/text/language
 github.com/gabriel-vasile/mimetype/internal/json
 database/sql/driver
 github.com/pborman/getopt/v2
-golang.org/x/text/language
-github.com/beevik/etree
-vendor/golang.org/x/net/idna
+os/user
 crypto/rand
 crypto/elliptic
 crypto/internal/bigmod
 crypto/internal/boring/bbig
 encoding/asn1
+crypto/dsa
 crypto/ed25519
 crypto/internal/hpke
 crypto/internal/mlkem768
-crypto/rsa
-crypto/dsa
-github.com/ProtonMail/go-crypto/bitcurves
-github.com/ProtonMail/go-crypto/brainpool
 github.com/ProtonMail/go-crypto/openpgp/internal/encoding
 github.com/cloudflare/circl/internal/conv
 github.com/cloudflare/circl/math
 github.com/ProtonMail/go-crypto/openpgp/elgamal
 golang.org/x/text/encoding/htmlindex
+github.com/ProtonMail/go-crypto/bitcurves
+github.com/ProtonMail/go-crypto/brainpool
+github.com/gabriel-vasile/mimetype/internal/charset
+crypto/rsa
 github.com/cloudflare/circl/math/fp25519
 github.com/cloudflare/circl/math/fp448
 github.com/cloudflare/circl/math/mlsbset
 debug/macho
+github.com/cloudflare/circl/ecc/goldilocks
+github.com/cloudflare/circl/dh/x448
+github.com/cloudflare/circl/dh/x25519
 vendor/golang.org/x/crypto/cryptobyte
 crypto/x509/pkix
-github.com/cloudflare/circl/dh/x25519
 github.com/cloudflare/circl/sign/ed25519
-github.com/gabriel-vasile/mimetype/internal/charset
-github.com/cloudflare/circl/dh/x448
-github.com/cloudflare/circl/ecc/goldilocks
-github.com/ProtonMail/go-crypto/openpgp/x25519
-crypto/ecdsa
 github.com/gabriel-vasile/mimetype/internal/magic
-github.com/ProtonMail/go-crypto/openpgp/ed25519
+github.com/ProtonMail/go-crypto/openpgp/x25519
 github.com/ProtonMail/go-crypto/openpgp/x448
 github.com/cloudflare/circl/sign/ed448
+github.com/ProtonMail/go-crypto/openpgp/ed25519
+crypto/ecdsa
 github.com/ProtonMail/go-crypto/openpgp/ed448
 github.com/ProtonMail/go-crypto/openpgp/internal/ecc
+github.com/gabriel-vasile/mimetype
 github.com/ProtonMail/go-crypto/openpgp/ecdh
-github.com/ProtonMail/go-crypto/openpgp/ecdsa
 github.com/ProtonMail/go-crypto/openpgp/eddsa
+github.com/ProtonMail/go-crypto/openpgp/ecdsa
 github.com/ProtonMail/go-crypto/openpgp/packet
-github.com/gabriel-vasile/mimetype
-net
-os/user
 github.com/ProtonMail/go-crypto/openpgp
-crypto/x509
-net/textproto
 vendor/golang.org/x/net/http/httpproxy
-github.com/google/uuid
+net/textproto
 golang.org/x/net/internal/socks
+crypto/x509
+github.com/google/uuid
 golang.org/x/net/proxy
 github.com/ProtonMail/go-crypto/openpgp/clearsign
 mime/multipart
-vendor/golang.org/x/net/http/httpguts
 net/mail
+vendor/golang.org/x/net/http/httpguts
 crypto/tls
 net/http/httptrace
 net/http
 github.com/ProtonMail/go-mime
-github.com/xmppo/go-xmpp
 salsa.debian.org/mdosch/xmppsrv
+github.com/xmppo/go-xmpp
 github.com/ProtonMail/gopenpgp/v2/crypto
 salsa.debian.org/mdosch/go-sendxmpp
 make[1]: Leaving directory '/build/reproducible-path/go-sendxmpp-0.14.1'
@@ -1006,12 +1042,14 @@
 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/33897/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/33897/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/2608467 and its subdirectories
-I: Current time: Wed Jan 29 03:01:39 -12 2025
-I: pbuilder-time-stamp: 1738162899
+I: removing directory /srv/workspace/pbuilder/33897 and its subdirectories
+I: Current time: Wed Mar  4 11:25:57 +14 2026
+I: pbuilder-time-stamp: 1772573157