Diff of the two buildlogs:

--
--- b1/build.log	2025-02-03 14:53:00.429598614 +0000
+++ b2/build.log	2025-02-03 14:54:19.706021695 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Feb  3 02:51:06 -12 2025
-I: pbuilder-time-stamp: 1738594266
+I: Current time: Mon Mar  9 11:16:02 +14 2026
+I: pbuilder-time-stamp: 1773004562
 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-shopify-sarama_1.22.1-1.debian.tar.xz
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/49377/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/77673/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 Mar  8 21:16 /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/77673/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/77673/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='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='130a5db53c7e4a398717f2b433ab14be'
-  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='49377'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=298be8ed5a284b53967eb0077d118790
+  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=77673
   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.0XplyEtL/pbuilderrc_tiC8 --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.0XplyEtL/b1 --logfile b1/build.log golang-github-shopify-sarama_1.22.1-1.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.0XplyEtL/pbuilderrc_chdn --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.0XplyEtL/b2 --logfile b2/build.log golang-github-shopify-sarama_1.22.1-1.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 6.1.0-30-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.124-1 (2025-01-12) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-30-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.124-1 (2025-01-12) 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/49377/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/77673/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -192,7 +224,7 @@
 Get: 56 http://deb.debian.org/debian unstable/main i386 golang-golang-x-net-dev all 1:0.27.0-1 [898 kB]
 Get: 57 http://deb.debian.org/debian unstable/main i386 golang-gopkg-eapache-go-resiliency.v1-dev all 1.7.0-1 [13.2 kB]
 Get: 58 http://deb.debian.org/debian unstable/main i386 golang-gopkg-eapache-queue.v1-dev all 1.1.0-2 [5028 B]
-Fetched 130 MB in 3s (51.0 MB/s)
+Fetched 130 MB in 1s (99.4 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 ... 19826 files and directories currently installed.)
@@ -444,7 +476,11 @@
 fakeroot is already the newest version (1.37-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-shopify-sarama-1.22.1/ && 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  > ../golang-github-shopify-sarama_1.22.1-1_source.changes
+I: user script /srv/workspace/pbuilder/77673/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/77673/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-shopify-sarama-1.22.1/ && 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  > ../golang-github-shopify-sarama_1.22.1-1_source.changes
 dpkg-buildpackage: info: source package golang-github-shopify-sarama
 dpkg-buildpackage: info: source version 1.22.1-1
 dpkg-buildpackage: info: source distribution unstable
@@ -462,144 +498,144 @@
    dh_autoreconf -O--buildsystem=golang
    dh_auto_configure -O--buildsystem=golang
    dh_auto_build -O--buildsystem=golang
-	cd obj-i686-linux-gnu && go install -trimpath -v -p 11 github.com/Shopify/sarama github.com/Shopify/sarama/mocks
-internal/goarch
-internal/coverage/rtcov
-internal/godebugs
-internal/goexperiment
-internal/unsafeheader
-internal/profilerecord
-internal/runtime/atomic
+	cd obj-i686-linux-gnu && go install -trimpath -v -p 21 github.com/Shopify/sarama github.com/Shopify/sarama/mocks
+internal/cpu
 internal/byteorder
-internal/runtime/syscall
+internal/unsafeheader
 internal/goos
-runtime/internal/math
-internal/abi
-internal/cpu
-internal/race
-runtime/internal/sys
-internal/runtime/exithook
-internal/bytealg
 sync/atomic
 unicode/utf8
-unicode
+internal/godebugs
 cmp
+container/list
+internal/msan
+unicode
 internal/itoa
 internal/asan
+internal/runtime/syscall
+internal/goarch
 math/bits
-internal/msan
-internal/chacha8rand
-container/list
-internal/stringslite
+internal/race
+internal/profilerecord
+internal/runtime/atomic
+internal/goexperiment
 crypto/internal/alias
 crypto/internal/boring/sig
+internal/coverage/rtcov
 unicode/utf16
 vendor/golang.org/x/crypto/cryptobyte/asn1
 vendor/golang.org/x/crypto/internal/alias
 internal/nettrace
+internal/abi
+runtime/internal/math
+internal/chacha8rand
 github.com/eapache/queue
 github.com/pierrec/lz4/internal/lz4errors
 encoding
-math
 log/internal
+runtime/internal/sys
+math
+internal/bytealg
+internal/runtime/exithook
+internal/stringslite
 runtime
-iter
+internal/weak
 crypto/subtle
+iter
 internal/reflectlite
-internal/weak
 sync
 slices
 internal/testlog
-internal/bisect
 internal/singleflight
+internal/bisect
 runtime/cgo
-sort
 errors
 internal/godebug
 io
 internal/oserror
-crypto/internal/edwards25519/field
 path
-strconv
 vendor/golang.org/x/net/dns/dnsmessage
-math/rand/v2
+crypto/internal/edwards25519/field
+sort
+strconv
 crypto/internal/nistec/fiat
+math/rand/v2
 syscall
 math/rand
+crypto/internal/edwards25519
 bytes
 strings
 hash
-hash/crc32
 crypto/internal/randutil
-crypto/internal/edwards25519
 internal/concurrent
+hash/crc32
 hash/fnv
-bufio
-reflect
-regexp/syntax
+unique
 crypto/cipher
-crypto
 crypto/rc4
-unique
+net/netip
+crypto
+bufio
+regexp/syntax
+reflect
 crypto/md5
-time
-internal/syscall/execenv
-internal/syscall/unix
-crypto/internal/boring
 crypto/des
+crypto/internal/boring
 crypto/aes
-crypto/sha512
 crypto/hmac
+crypto/sha512
 crypto/sha1
 crypto/sha256
-net/netip
 vendor/golang.org/x/crypto/hkdf
+internal/syscall/execenv
+internal/syscall/unix
+time
 regexp
 crypto/internal/nistec
-io/fs
 context
-internal/poll
+io/fs
 github.com/eapache/go-resiliency/breaker
-internal/filepathlite
-os
+internal/poll
 crypto/ecdh
+internal/filepathlite
 internal/fmtsort
 encoding/binary
+os
 vendor/golang.org/x/crypto/chacha20
 encoding/base64
-vendor/golang.org/x/crypto/internal/poly1305
 github.com/pierrec/lz4/internal/xxh32
-github.com/pierrec/lz4/internal/lz4block
+vendor/golang.org/x/crypto/internal/poly1305
 github.com/golang/snappy
+github.com/pierrec/lz4/internal/lz4block
 vendor/golang.org/x/crypto/chacha20poly1305
-encoding/pem
 github.com/eapache/go-xerial-snappy
+encoding/pem
+io/ioutil
 fmt
 path/filepath
-io/ioutil
 vendor/golang.org/x/sys/cpu
 net
 vendor/golang.org/x/crypto/sha3
 encoding/hex
-net/url
-compress/flate
-text/tabwriter
 github.com/DataDog/zstd
 log
-runtime/debug
+net/url
+text/tabwriter
 github.com/pierrec/lz4/internal/lz4stream
+runtime/debug
+compress/flate
 encoding/json
 math/big
 github.com/davecgh/go-spew/spew
 github.com/pierrec/lz4
 compress/gzip
 runtime/pprof
-crypto/internal/bigmod
-crypto/elliptic
 crypto/internal/boring/bbig
-encoding/asn1
-crypto/rand
 crypto/dsa
+crypto/elliptic
+crypto/internal/bigmod
+crypto/rand
+encoding/asn1
 crypto/ed25519
 crypto/internal/hpke
 crypto/internal/mlkem768
@@ -614,8 +650,8 @@
 /usr/include/zstd.h:203:20: note: declared here
   203 | unsigned long long ZSTD_getDecompressedSize(const void* src, size_t srcSize);
       |                    ^~~~~~~~~~~~~~~~~~~~~~~~
-log/syslog
 golang.org/x/net/internal/socks
+log/syslog
 crypto/x509
 github.com/rcrowley/go-metrics
 golang.org/x/net/proxy
@@ -623,7 +659,7 @@
 github.com/Shopify/sarama
 github.com/Shopify/sarama/mocks
    dh_auto_test -O--buildsystem=golang
-	cd obj-i686-linux-gnu && go test -vet=off -v -p 11 github.com/Shopify/sarama github.com/Shopify/sarama/mocks
+	cd obj-i686-linux-gnu && go test -vet=off -v -p 21 github.com/Shopify/sarama github.com/Shopify/sarama/mocks
 # github.com/DataDog/zstd
 cgo-gcc-prolog: In function '_cgo_1dd006291257_Cfunc_ZSTD_getDecompressedSize':
 cgo-gcc-prolog:116:2: warning: 'ZSTD_getDecompressedSize' is deprecated [-Wdeprecated-declarations]
@@ -726,7 +762,7 @@
 === RUN   TestAsyncProducerRecoveryWithRetriesDisabled
 === RUN   TestAsyncProducerRecoveryWithRetriesDisabled/retriable_error
 === RUN   TestAsyncProducerRecoveryWithRetriesDisabled/non-retriable_error
---- PASS: TestAsyncProducerRecoveryWithRetriesDisabled (0.01s)
+--- PASS: TestAsyncProducerRecoveryWithRetriesDisabled (0.00s)
     --- PASS: TestAsyncProducerRecoveryWithRetriesDisabled/retriable_error (0.00s)
     --- PASS: TestAsyncProducerRecoveryWithRetriesDisabled/non-retriable_error (0.00s)
 === RUN   TestAsyncProducerEncoderFailures
@@ -736,7 +772,7 @@
 === RUN   TestAsyncProducerBrokerBounceWithStaleMetadata
 --- PASS: TestAsyncProducerBrokerBounceWithStaleMetadata (0.00s)
 === RUN   TestAsyncProducerMultipleRetries
---- PASS: TestAsyncProducerMultipleRetries (0.01s)
+--- PASS: TestAsyncProducerMultipleRetries (0.00s)
 === RUN   TestAsyncProducerMultipleRetriesWithBackoffFunc
 --- PASS: TestAsyncProducerMultipleRetriesWithBackoffFunc (0.00s)
 === RUN   TestAsyncProducerOutOfRetries
@@ -755,7 +791,7 @@
 === RUN   TestAsyncProducerIdempotentRetryCheckBatch
 --- PASS: TestAsyncProducerIdempotentRetryCheckBatch (1.31s)
 === RUN   TestAsyncProducerIdempotentErrorOnOutOfSeq
---- PASS: TestAsyncProducerIdempotentErrorOnOutOfSeq (0.00s)
+--- PASS: TestAsyncProducerIdempotentErrorOnOutOfSeq (0.01s)
 === RUN   TestBalanceStrategyRange
 --- PASS: TestBalanceStrategyRange (0.00s)
 === RUN   TestBalanceStrategyRoundRobin
@@ -805,7 +841,7 @@
 === RUN   TestClientAutorefreshShutdownRace
 --- PASS: TestClientAutorefreshShutdownRace (0.13s)
 === RUN   TestTLS
---- PASS: TestTLS (8.78s)
+--- PASS: TestTLS (7.74s)
 === RUN   TestDefaultConfigValidates
 --- PASS: TestDefaultConfigValidates (0.00s)
 === RUN   TestInvalidClientIDConfigValidates
@@ -1154,7 +1190,7 @@
 === RUN   ExampleConfig_metrics
 --- PASS: ExampleConfig_metrics (0.00s)
 PASS
-ok  	github.com/Shopify/sarama	14.862s
+ok  	github.com/Shopify/sarama	13.768s
 === RUN   TestMockAsyncProducerImplementsAsyncProducerInterface
 --- PASS: TestMockAsyncProducerImplementsAsyncProducerInterface (0.00s)
 === RUN   TestProducerReturnsExpectationsToChannels
@@ -1206,7 +1242,7 @@
 === RUN   TestSyncProducerSendMessagesFaultyEncoder
 --- PASS: TestSyncProducerSendMessagesFaultyEncoder (0.00s)
 PASS
-ok  	github.com/Shopify/sarama/mocks	0.008s
+ok  	github.com/Shopify/sarama/mocks	0.005s
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=golang
    dh_prep -O--buildsystem=golang
@@ -1234,12 +1270,14 @@
 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/77673/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/77673/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/49377 and its subdirectories
-I: Current time: Mon Feb  3 02:52:59 -12 2025
-I: pbuilder-time-stamp: 1738594379
+I: removing directory /srv/workspace/pbuilder/77673 and its subdirectories
+I: Current time: Mon Mar  9 11:17:18 +14 2026
+I: pbuilder-time-stamp: 1773004638