Diff of the two buildlogs:

--
--- b1/build.log	2025-02-22 13:13:35.946152468 +0000
+++ b2/build.log	2025-02-22 13:17:06.448609233 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sat Feb 22 01:10:15 -12 2025
-I: pbuilder-time-stamp: 1740229815
+I: Current time: Sat Mar 28 09:36:38 +14 2026
+I: pbuilder-time-stamp: 1774640198
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -22,51 +22,83 @@
 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/3903567/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/3476893/tmp/hooks/D01_modify_environment starting
+debug: Running on infom02-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 27 19:36 /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/3476893/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/3476893/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'
+  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=12 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='amd64'
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='77b4cb19148d44f48fc40b57bda11ae4'
-  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='3903567'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=ecb16249e23b4dd2a1038a8e6e33e16e
+  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=3476893
   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.Wgyn6P4m/pbuilderrc_MVlE --distribution unstable --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.Wgyn6P4m/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'
+  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.Wgyn6P4m/pbuilderrc_9Ku2 --distribution unstable --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.Wgyn6P4m/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'
 I: uname -a
-  Linux infom01-amd64 6.1.0-31-cloud-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.128-1 (2025-02-07) 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/3903567/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/3476893/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: 107 http://deb.debian.org/debian unstable/main amd64 ruby-nokogiri amd64 1.18.2+dfsg-1+b1 [241 kB]
 Get: 108 http://deb.debian.org/debian unstable/main amd64 ruby-ronn all 0.10.1-2 [28.0 kB]
 Get: 109 http://deb.debian.org/debian unstable/main amd64 ronn all 0.10.1-2 [8708 B]
-Fetched 115 MB in 2s (75.1 MB/s)
+Fetched 115 MB in 3s (37.9 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 ... 19775 files and directories currently installed.)
@@ -693,7 +725,11 @@
 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/3476893/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/3476893/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
@@ -715,42 +751,42 @@
 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/godebugs
-internal/profilerecord
 internal/coverage/rtcov
-internal/asan
-internal/goos
 internal/unsafeheader
-internal/cpu
+internal/goos
+internal/profilerecord
+internal/asan
+internal/goarch
 internal/msan
 internal/byteorder
-internal/goarch
 internal/goexperiment
+internal/cpu
 internal/runtime/atomic
 internal/runtime/syscall
 sync/atomic
+internal/abi
+internal/runtime/math
 math/bits
-unicode
+internal/runtime/sys
 unicode/utf8
+unicode
 internal/itoa
-crypto/internal/fips140/alias
-cmp
-internal/abi
 internal/chacha8rand
-internal/runtime/math
-internal/runtime/sys
+crypto/internal/fips140/alias
 crypto/internal/fips140deps/byteorder
+cmp
 crypto/internal/fips140/subtle
 crypto/internal/boring/sig
 container/list
 unicode/utf16
+internal/runtime/exithook
+internal/bytealg
+crypto/internal/fips140deps/cpu
 vendor/golang.org/x/crypto/cryptobyte/asn1
 vendor/golang.org/x/crypto/internal/alias
 internal/nettrace
-internal/bytealg
-internal/runtime/exithook
-crypto/internal/fips140deps/cpu
-encoding
 math
+encoding
 github.com/ProtonMail/gopenpgp/v2/constants
 github.com/ProtonMail/go-crypto/internal/byteutil
 golang.org/x/crypto/cryptobyte/asn1
@@ -765,133 +801,130 @@
 internal/runtime/maps
 runtime
 internal/reflectlite
-weak
-crypto/subtle
 iter
+crypto/subtle
+weak
 sync
-slices
 maps
-errors
-sort
+slices
 internal/bisect
 internal/testlog
 unique
 internal/singleflight
 runtime/cgo
-io
-strconv
-vendor/golang.org/x/net/dns/dnsmessage
+errors
+internal/oserror
 path
-golang.org/x/crypto/cast5
 internal/godebug
+golang.org/x/crypto/cast5
+io
+vendor/golang.org/x/net/dns/dnsmessage
+strconv
 math/rand/v2
-internal/oserror
-bytes
+sort
 syscall
-internal/saferio
-strings
 crypto/internal/randutil
+bytes
+strings
 hash
-golang.org/x/text/internal/tag
-hash/adler32
 github.com/cloudflare/circl/internal/sha3
+internal/saferio
+hash/adler32
 hash/crc32
-bufio
-vendor/golang.org/x/text/transform
+crypto/internal/fips140deps/godebug
+math/rand
+golang.org/x/text/internal/tag
+crypto
+net/netip
 github.com/ProtonMail/go-crypto/openpgp/errors
 reflect
+vendor/golang.org/x/text/transform
 golang.org/x/text/transform
-net/netip
-math/rand
-crypto/internal/fips140deps/godebug
+github.com/cloudflare/circl/sign
+bufio
 crypto/internal/impl
-crypto
-net/http/internal/ascii
 crypto/internal/fips140
-compress/bzip2
-github.com/cloudflare/circl/sign
+net/http/internal/ascii
+regexp/syntax
 golang.org/x/text/encoding
-image
 golang.org/x/text/runes
-regexp/syntax
 crypto/internal/fips140/sha256
 crypto/internal/fips140/sha3
-crypto/internal/fips140/sha512
 crypto/tls/internal/fips140tls
+crypto/internal/fips140/sha512
 golang.org/x/text/encoding/internal
+compress/bzip2
+image
 internal/syscall/unix
 time
 internal/syscall/execenv
+crypto/sha3
 golang.org/x/text/encoding/charmap
-golang.org/x/text/encoding/japanese
 golang.org/x/text/encoding/korean
-crypto/sha3
-crypto/internal/fips140/hmac
-image/internal/imageutil
+golang.org/x/text/encoding/japanese
 golang.org/x/text/encoding/simplifiedchinese
-crypto/internal/fips140/check
 crypto/internal/fips140hash
-image/jpeg
+golang.org/x/text/encoding/traditionalchinese
+crypto/internal/fips140/hmac
+crypto/internal/fips140/check
+golang.org/x/text/encoding/unicode
+regexp
 crypto/internal/fips140/aes
 crypto/internal/fips140/nistec/fiat
 crypto/internal/fips140/edwards25519/field
 crypto/internal/fips140/bigmod
 crypto/internal/fips140/hkdf
+crypto/internal/fips140/edwards25519
 crypto/internal/fips140/tls12
+image/internal/imageutil
 crypto/internal/fips140/tls13
-golang.org/x/text/encoding/traditionalchinese
+image/jpeg
 context
-io/fs
 internal/poll
-golang.org/x/text/encoding/unicode
-regexp
+io/fs
 internal/filepathlite
-crypto/internal/fips140/edwards25519
 crypto/internal/fips140/nistec
 os
 internal/fmtsort
 encoding/binary
+vendor/golang.org/x/crypto/internal/poly1305
+encoding/base64
+encoding/pem
+github.com/ProtonMail/go-crypto/openpgp/armor
 crypto/internal/sysrand
-fmt
-path/filepath
-vendor/golang.org/x/sys/cpu
-golang.org/x/sys/cpu
 io/ioutil
+path/filepath
 os/signal
-vendor/golang.org/x/crypto/internal/poly1305
-encoding/base64
+fmt
+golang.org/x/sys/cpu
+vendor/golang.org/x/sys/cpu
 crypto/internal/entropy
 crypto/internal/fips140/drbg
+golang.org/x/crypto/blake2b
+golang.org/x/crypto/sha3
 os/exec
 crypto/internal/fips140only
+crypto/internal/fips140/ecdh
+crypto/internal/fips140/ecdsa
 crypto/internal/fips140/ed25519
 crypto/internal/fips140/aes/gcm
 crypto/internal/fips140/mlkem
+crypto/internal/fips140/rsa
 crypto/md5
 crypto/rc4
-encoding/pem
-crypto/internal/fips140/ecdh
-crypto/internal/fips140/ecdsa
-github.com/ProtonMail/go-crypto/openpgp/armor
-crypto/internal/fips140/rsa
-golang.org/x/crypto/blake2b
-golang.org/x/crypto/sha3
-math/big
+net
+golang.org/x/crypto/argon2
+crypto/cipher
 encoding/hex
 net/url
-encoding/gob
 encoding/xml
 encoding/json
-compress/flate
-golang.org/x/text/internal/language
 log
+encoding/gob
+golang.org/x/text/internal/language
+math/big
 mime
-mime/quotedprintable
-crypto/cipher
-vendor/golang.org/x/text/unicode/bidi
-vendor/golang.org/x/text/unicode/norm
-golang.org/x/crypto/argon2
-compress/zlib
+compress/flate
 crypto/internal/boring
 crypto/des
 crypto/aes
@@ -901,86 +934,89 @@
 vendor/golang.org/x/crypto/chacha20
 crypto/sha1
 crypto/sha256
-github.com/ProtonMail/go-crypto/ocb
+github.com/ProtonMail/go-crypto/openpgp/aes/keywrap
 github.com/ProtonMail/go-crypto/eax
-golang.org/x/text/internal/language/compact
+github.com/ProtonMail/go-crypto/ocb
+compress/zlib
 golang.org/x/crypto/hkdf
-compress/gzip
-vendor/golang.org/x/text/secure/bidirule
-github.com/ProtonMail/go-crypto/openpgp/aes/keywrap
 vendor/golang.org/x/crypto/chacha20poly1305
+mime/quotedprintable
+golang.org/x/text/internal/language/compact
+compress/gzip
+vendor/golang.org/x/text/unicode/bidi
+vendor/golang.org/x/text/unicode/norm
+golang.org/x/text/language
+github.com/ProtonMail/go-crypto/openpgp/internal/algorithm
 vendor/golang.org/x/net/http2/hpack
 net/http/internal
+github.com/ProtonMail/go-crypto/openpgp/s2k
 github.com/pkg/errors
-vendor/golang.org/x/net/idna
 runtime/debug
-github.com/beevik/etree
-golang.org/x/text/language
 golang.org/x/net/html
-github.com/ProtonMail/go-crypto/openpgp/internal/algorithm
-github.com/ProtonMail/gopenpgp/v2/internal
+github.com/beevik/etree
 debug/dwarf
+github.com/ProtonMail/gopenpgp/v2/internal
 github.com/ProtonMail/gopenpgp/v2/armor
-github.com/ProtonMail/go-crypto/openpgp/s2k
 encoding/csv
 github.com/gabriel-vasile/mimetype/internal/json
+vendor/golang.org/x/text/secure/bidirule
 golang.org/x/text/encoding/htmlindex
 database/sql/driver
 github.com/pborman/getopt/v2
 golang.org/x/crypto/pbkdf2
+os/user
+golang.org/x/crypto/scrypt
+vendor/golang.org/x/net/idna
 crypto/rand
 crypto/internal/boring/bbig
-encoding/asn1
 crypto/dsa
 crypto/elliptic
+github.com/ProtonMail/go-crypto/openpgp/internal/encoding
+encoding/asn1
+debug/macho
+github.com/gabriel-vasile/mimetype/internal/charset
 crypto/ed25519
 crypto/internal/hpke
-github.com/ProtonMail/go-crypto/openpgp/internal/encoding
 crypto/rsa
 github.com/cloudflare/circl/math
 github.com/ProtonMail/go-crypto/openpgp/elgamal
-golang.org/x/crypto/scrypt
-debug/macho
 github.com/ProtonMail/go-crypto/bitcurves
 github.com/ProtonMail/go-crypto/brainpool
-github.com/gabriel-vasile/mimetype/internal/charset
-crypto/x509/pkix
+github.com/gabriel-vasile/mimetype/internal/magic
 vendor/golang.org/x/crypto/cryptobyte
 golang.org/x/crypto/cryptobyte
-github.com/gabriel-vasile/mimetype/internal/magic
+github.com/gabriel-vasile/mimetype
+crypto/x509/pkix
 github.com/cloudflare/circl/internal/conv
 crypto/ecdsa
 github.com/cloudflare/circl/math/fp25519
 github.com/cloudflare/circl/math/mlsbset
 github.com/cloudflare/circl/math/fp448
-github.com/gabriel-vasile/mimetype
-github.com/cloudflare/circl/dh/x25519
-github.com/cloudflare/circl/sign/ed25519
 github.com/cloudflare/circl/ecc/goldilocks
 github.com/cloudflare/circl/dh/x448
-github.com/ProtonMail/go-crypto/openpgp/ed25519
+github.com/cloudflare/circl/dh/x25519
+github.com/cloudflare/circl/sign/ed25519
 github.com/ProtonMail/go-crypto/openpgp/x25519
+github.com/ProtonMail/go-crypto/openpgp/ed25519
 github.com/cloudflare/circl/sign/ed448
 github.com/ProtonMail/go-crypto/openpgp/x448
 github.com/ProtonMail/go-crypto/openpgp/ed448
 github.com/ProtonMail/go-crypto/openpgp/internal/ecc
 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
-os/user
-net
 github.com/ProtonMail/go-crypto/openpgp
-vendor/golang.org/x/net/http/httpproxy
 net/textproto
+vendor/golang.org/x/net/http/httpproxy
+crypto/x509
 golang.org/x/net/internal/socks
 github.com/google/uuid
-crypto/x509
+golang.org/x/net/proxy
 github.com/ProtonMail/go-crypto/openpgp/clearsign
-mime/multipart
 vendor/golang.org/x/net/http/httpguts
+mime/multipart
 net/mail
-golang.org/x/net/proxy
 crypto/tls
 net/http/httptrace
 net/http
@@ -1037,12 +1073,14 @@
 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/3476893/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/3476893/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/3903567 and its subdirectories
-I: Current time: Sat Feb 22 01:13:35 -12 2025
-I: pbuilder-time-stamp: 1740230015
+I: removing directory /srv/workspace/pbuilder/3476893 and its subdirectories
+I: Current time: Sat Mar 28 09:40:05 +14 2026
+I: pbuilder-time-stamp: 1774640405