Diff of the two buildlogs:

--
--- b1/build.log	2025-04-12 16:00:09.426782065 +0000
+++ b2/build.log	2025-04-12 16:02:28.759721036 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sat Apr 12 03:59:23 -12 2025
-I: pbuilder-time-stamp: 1744473564
+I: Current time: Sat May 16 12:23:17 +14 2026
+I: pbuilder-time-stamp: 1778883797
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -23,54 +23,86 @@
 dpkg-source: info: unpacking golang-github-nats-io-go-nats_1.41.0-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/31918/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/63192/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 15 22:23 /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/63192/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/63192/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=24 '
-  DISTRIBUTION='unstable'
-  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=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=i686
+  HOST_ARCH=i386
   IFS=' 	
   '
-  INVOCATION_ID='d80aab386e284c6b83b3650d82baeb45'
-  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='31918'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=b2d81aea9b6147909969b1f5178262dc
+  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=63192
   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.NFLWJW1X/pbuilderrc_3zEk --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.NFLWJW1X/b1 --logfile b1/build.log golang-github-nats-io-go-nats_1.41.0-1.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.NFLWJW1X/pbuilderrc_FwiQ --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.NFLWJW1X/b2 --logfile b2/build.log golang-github-nats-io-go-nats_1.41.0-1.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/31918/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/63192/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -168,7 +200,7 @@
 Get: 44 http://deb.debian.org/debian unstable/main i386 golang-golang-x-crypto-dev all 1:0.25.0-1 [1682 kB]
 Get: 45 http://deb.debian.org/debian unstable/main i386 golang-github-nats-io-nkeys-dev all 0.4.10-1 [16.8 kB]
 Get: 46 http://deb.debian.org/debian unstable/main i386 golang-github-nats-io-nuid-dev all 1.0.1-1 [4452 B]
-Fetched 99.8 MB in 2s (44.0 MB/s)
+Fetched 99.8 MB in 3s (28.6 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 ... 19827 files and directories currently installed.)
@@ -367,7 +399,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-nats-io-go-nats-1.41.0/ && 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-nats-io-go-nats_1.41.0-1_source.changes
+I: user script /srv/workspace/pbuilder/63192/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/63192/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-nats-io-go-nats-1.41.0/ && 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-nats-io-go-nats_1.41.0-1_source.changes
 dpkg-buildpackage: info: source package golang-github-nats-io-go-nats
 dpkg-buildpackage: info: source version 1.41.0-1
 dpkg-buildpackage: info: source distribution unstable
@@ -388,214 +424,214 @@
 dh_auto_build: warning: github.com/nats-io/nats.go/jetstream/test contains no non-test Go files, removing it from build
 dh_auto_build: warning: github.com/nats-io/nats.go/micro/test contains no non-test Go files, removing it from build
 dh_auto_build: warning: github.com/nats-io/nats.go/test contains no non-test Go files, removing it from build
-	cd obj-i686-linux-gnu && go install -trimpath -v -p 24 github.com/nats-io/nats.go github.com/nats-io/nats.go/bench github.com/nats-io/nats.go/encoders/builtin github.com/nats-io/nats.go/encoders/protobuf github.com/nats-io/nats.go/internal/parser github.com/nats-io/nats.go/internal/syncx github.com/nats-io/nats.go/jetstream github.com/nats-io/nats.go/micro github.com/nats-io/nats.go/util
-unicode/utf16
-internal/goarch
-internal/byteorder
+	cd obj-i686-linux-gnu && go install -trimpath -v -p 21 github.com/nats-io/nats.go github.com/nats-io/nats.go/bench github.com/nats-io/nats.go/encoders/builtin github.com/nats-io/nats.go/encoders/protobuf github.com/nats-io/nats.go/internal/parser github.com/nats-io/nats.go/internal/syncx github.com/nats-io/nats.go/jetstream github.com/nats-io/nats.go/micro github.com/nats-io/nats.go/util
+internal/asan
+internal/goos
+crypto/internal/fips140/alias
 cmp
-vendor/golang.org/x/crypto/cryptobyte/asn1
-unicode/utf8
+internal/byteorder
 internal/itoa
-math/bits
-internal/profilerecord
-internal/coverage/rtcov
-internal/msan
-crypto/internal/boring/sig
-internal/runtime/atomic
-internal/godebugs
-internal/goexperiment
 container/list
-internal/unsafeheader
-internal/asan
 internal/runtime/syscall
-sync/atomic
-internal/goos
-internal/cpu
+math/bits
 unicode
-crypto/internal/fips140/alias
+unicode/utf8
+internal/cpu
+internal/goexperiment
+internal/msan
+crypto/internal/fips140deps/byteorder
+internal/unsafeheader
+internal/goarch
+unicode/utf16
+vendor/golang.org/x/crypto/cryptobyte/asn1
+internal/godebugs
+internal/runtime/atomic
 vendor/golang.org/x/crypto/internal/alias
-internal/abi
 internal/nettrace
-internal/runtime/math
 encoding
-internal/runtime/sys
 log/internal
-golang.org/x/crypto/internal/alias
+sync/atomic
+internal/profilerecord
+internal/coverage/rtcov
 google.golang.org/protobuf/internal/flags
-internal/chacha8rand
-crypto/internal/fips140deps/byteorder
-golang.org/x/crypto/salsa20/salsa
+internal/abi
+internal/runtime/math
+internal/runtime/sys
 math
-crypto/internal/fips140deps/cpu
+golang.org/x/crypto/salsa20/salsa
+golang.org/x/crypto/internal/alias
+internal/chacha8rand
 internal/bytealg
+crypto/internal/boring/sig
+crypto/internal/fips140deps/cpu
 internal/runtime/exithook
 internal/stringslite
 internal/race
 internal/sync
 internal/runtime/maps
 runtime
+internal/reflectlite
+sync
 iter
 crypto/internal/fips140/subtle
 weak
-internal/reflectlite
-sync
 maps
 slices
 crypto/subtle
-internal/singleflight
-internal/testlog
-unique
-google.golang.org/protobuf/internal/pragma
-internal/bisect
-github.com/nats-io/nats.go/internal/syncx
 errors
 sort
-runtime/cgo
 internal/oserror
 path
-io
-vendor/golang.org/x/net/dns/dnsmessage
-math/rand/v2
 strconv
+math/rand/v2
+vendor/golang.org/x/net/dns/dnsmessage
+internal/bisect
+github.com/nats-io/nats.go/internal/syncx
+io
+google.golang.org/protobuf/internal/pragma
+internal/singleflight
+internal/testlog
+unique
 syscall
+runtime/cgo
 internal/godebug
+golang.org/x/text/internal/tag
+bytes
+strings
 hash
 crypto/internal/randutil
 internal/saferio
-strings
-bytes
-hash/fnv
 hash/crc32
-golang.org/x/text/internal/tag
-crypto/internal/fips140deps/godebug
-math/rand
+hash/fnv
 crypto
-encoding/base32
-net/netip
 reflect
-golang.org/x/text/transform
-vendor/golang.org/x/text/transform
+net/netip
+encoding/base32
+bufio
+crypto/internal/fips140deps/godebug
 crypto/internal/impl
+math/rand
+time
+golang.org/x/text/transform
 crypto/internal/fips140
-net/http/internal/ascii
-bufio
+internal/syscall/unix
 regexp/syntax
-crypto/tls/internal/fips140tls
+vendor/golang.org/x/text/transform
+net/http/internal/ascii
+internal/syscall/execenv
 crypto/internal/fips140/sha256
 crypto/internal/fips140/sha512
 crypto/internal/fips140/sha3
-crypto/sha3
+crypto/tls/internal/fips140tls
 crypto/internal/fips140/hmac
-crypto/internal/fips140/check
+crypto/sha3
+regexp
 crypto/internal/fips140hash
-crypto/internal/fips140/hkdf
-internal/syscall/execenv
-crypto/internal/fips140/bigmod
-crypto/internal/fips140/tls12
-crypto/internal/fips140/edwards25519/field
-internal/syscall/unix
+crypto/internal/fips140/check
 crypto/internal/fips140/aes
-time
+crypto/internal/fips140/edwards25519/field
+crypto/internal/fips140/bigmod
+crypto/internal/fips140/hkdf
 crypto/internal/fips140/nistec/fiat
-crypto/internal/fips140/edwards25519
-crypto/internal/fips140/tls13
-regexp
+crypto/internal/fips140/tls12
 context
 io/fs
 internal/poll
+crypto/internal/fips140/tls13
+crypto/internal/fips140/edwards25519
 internal/filepathlite
 os
 internal/fmtsort
 encoding/binary
-crypto/internal/fips140/nistec
+vendor/golang.org/x/crypto/internal/poly1305
 github.com/klauspost/compress/internal/le
 encoding/base64
-vendor/golang.org/x/crypto/internal/poly1305
-golang.org/x/crypto/internal/poly1305
 golang.org/x/crypto/blake2b
+golang.org/x/crypto/internal/poly1305
 golang.org/x/crypto/nacl/secretbox
 encoding/pem
 crypto/internal/sysrand
-google.golang.org/protobuf/internal/detrand
-path/filepath
 fmt
+path/filepath
+google.golang.org/protobuf/internal/detrand
 crypto/internal/entropy
 crypto/internal/fips140/drbg
+crypto/internal/fips140/nistec
+net
+crypto/internal/fips140/aes/gcm
 crypto/internal/fips140only
-crypto/internal/fips140/mlkem
 crypto/internal/fips140/ed25519
+crypto/internal/fips140/mlkem
 crypto/internal/fips140/rsa
-crypto/internal/fips140/aes/gcm
-crypto/rc4
 crypto/md5
+crypto/rc4
 crypto/cipher
-net
-crypto/des
-vendor/golang.org/x/crypto/chacha20
-crypto/internal/boring
 encoding/hex
-mime/quotedprintable
-compress/flate
-net/http/internal
-vendor/golang.org/x/net/http2/hpack
-encoding/csv
-mime
-google.golang.org/protobuf/internal/errors
-github.com/nats-io/nats.go/internal/parser
 net/url
 encoding/json
+github.com/nats-io/nats.go/internal/parser
+encoding/gob
 log
+vendor/golang.org/x/net/http2/hpack
 vendor/golang.org/x/text/unicode/norm
-golang.org/x/text/internal/language
+mime
+mime/quotedprintable
+net/http/internal
+encoding/csv
+google.golang.org/protobuf/internal/errors
+go/token
+compress/flate
 math/big
+crypto/internal/boring
+crypto/des
+vendor/golang.org/x/crypto/chacha20
+golang.org/x/text/internal/language
+google.golang.org/protobuf/encoding/protowire
 golang.org/x/text/unicode/norm
-encoding/gob
-go/token
 crypto/sha1
 crypto/sha256
 crypto/aes
 crypto/sha512
 crypto/hmac
-vendor/golang.org/x/crypto/chacha20poly1305
-google.golang.org/protobuf/encoding/protowire
 vendor/golang.org/x/text/unicode/bidi
-crypto/internal/fips140/ecdh
-crypto/internal/fips140/ecdsa
+vendor/golang.org/x/crypto/chacha20poly1305
 google.golang.org/protobuf/reflect/protoreflect
-crypto/ecdh
 compress/gzip
 github.com/klauspost/compress/flate
-golang.org/x/crypto/curve25519
 vendor/golang.org/x/text/secure/bidirule
 golang.org/x/text/internal/language/compact
-vendor/golang.org/x/net/idna
-golang.org/x/text/language
 google.golang.org/protobuf/internal/encoding/messageset
 google.golang.org/protobuf/internal/order
-google.golang.org/protobuf/internal/genid
 google.golang.org/protobuf/internal/strs
+google.golang.org/protobuf/internal/genid
 google.golang.org/protobuf/runtime/protoiface
+vendor/golang.org/x/net/idna
 google.golang.org/protobuf/reflect/protoregistry
-crypto/internal/boring/bbig
+golang.org/x/text/language
+github.com/nats-io/nats.go/encoders/builtin
+google.golang.org/protobuf/proto
 crypto/rand
-crypto/elliptic
-crypto/dsa
+crypto/internal/boring/bbig
 encoding/asn1
-google.golang.org/protobuf/proto
-golang.org/x/text/internal
-crypto/internal/hpke
+crypto/dsa
 crypto/ed25519
-github.com/nats-io/nuid
 crypto/rsa
-golang.org/x/crypto/nacl/box
-github.com/nats-io/nats.go/encoders/builtin
+github.com/nats-io/nuid
+golang.org/x/text/internal
+crypto/elliptic
+crypto/internal/fips140/ecdsa
+crypto/internal/fips140/ecdh
 golang.org/x/text/cases
-github.com/nats-io/nkeys
+crypto/ecdh
+crypto/internal/hpke
+golang.org/x/crypto/curve25519
 crypto/x509/pkix
+golang.org/x/crypto/nacl/box
 vendor/golang.org/x/crypto/cryptobyte
+github.com/nats-io/nkeys
 crypto/ecdsa
-vendor/golang.org/x/net/http/httpproxy
 net/textproto
+vendor/golang.org/x/net/http/httpproxy
 crypto/x509
 vendor/golang.org/x/net/http/httpguts
 mime/multipart
@@ -605,8 +641,8 @@
 net/http
 github.com/nats-io/nats.go
 github.com/nats-io/nats.go/encoders/protobuf
-github.com/nats-io/nats.go/bench
 github.com/nats-io/nats.go/micro
+github.com/nats-io/nats.go/bench
 github.com/nats-io/nats.go/jetstream
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=golang
@@ -635,12 +671,14 @@
 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/63192/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/63192/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/31918 and its subdirectories
-I: Current time: Sat Apr 12 04:00:08 -12 2025
-I: pbuilder-time-stamp: 1744473608
+I: removing directory /srv/workspace/pbuilder/63192 and its subdirectories
+I: Current time: Sat May 16 12:25:26 +14 2026
+I: pbuilder-time-stamp: 1778883926