Diff of the two buildlogs:

--
--- b1/build.log	2024-12-03 11:37:49.393031416 +0000
+++ b2/build.log	2024-12-03 11:39:43.523853849 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Jan  5 05:59:57 -12 2026
-I: pbuilder-time-stamp: 1767635997
+I: Current time: Wed Dec  4 01:37:51 +14 2024
+I: pbuilder-time-stamp: 1733225871
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -26,54 +26,86 @@
 dpkg-source: info: unpacking golang-github-opentracing-opentracing-go_1.2.0-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/24695/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/62402/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos12-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 Dec  3 11:38 /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/62402/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/62402/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=22 '
-  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]="32" [3]="1" [4]="release" [5]="i686-pc-linux-gnu")
+  BASH_VERSION='5.2.32(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=10 '
+  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='f88bb720fd1a4e208347b6591edc7b69'
-  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='24695'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=892046af355c4f3cb7b48a67a7d74328
+  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=62402
   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.QES2cghZ/pbuilderrc_wCeE --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.QES2cghZ/b1 --logfile b1/build.log golang-github-opentracing-opentracing-go_1.2.0-2.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://213.165.73.152:3128'
+  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.QES2cghZ/pbuilderrc_Zjf6 --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.QES2cghZ/b2 --logfile b2/build.log golang-github-opentracing-opentracing-go_1.2.0-2.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://46.16.76.132:3128
 I: uname -a
-  Linux ionos16-i386 6.1.0-28-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-28-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/24695/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/62402/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -155,7 +187,7 @@
 Get: 38 http://deb.debian.org/debian unstable/main i386 golang-github-stretchr-objx-dev all 0.5.2-1 [25.5 kB]
 Get: 39 http://deb.debian.org/debian unstable/main i386 golang-gopkg-yaml.v3-dev all 3.0.1-3 [74.3 kB]
 Get: 40 http://deb.debian.org/debian unstable/main i386 golang-github-stretchr-testify-dev all 1.9.0-1 [74.7 kB]
-Fetched 64.6 MB in 1s (53.1 MB/s)
+Fetched 64.6 MB in 1s (58.4 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 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 ... 19955 files and directories currently installed.)
@@ -330,7 +362,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-opentracing-opentracing-go-1.2.0/ && 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-opentracing-opentracing-go_1.2.0-2_source.changes
+I: user script /srv/workspace/pbuilder/62402/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/62402/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-opentracing-opentracing-go-1.2.0/ && 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-opentracing-opentracing-go_1.2.0-2_source.changes
 dpkg-buildpackage: info: source package golang-github-opentracing-opentracing-go
 dpkg-buildpackage: info: source version 1.2.0-2
 dpkg-buildpackage: info: source distribution unstable
@@ -348,96 +384,96 @@
    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 22 github.com/opentracing/opentracing-go github.com/opentracing/opentracing-go/ext github.com/opentracing/opentracing-go/harness github.com/opentracing/opentracing-go/log github.com/opentracing/opentracing-go/mocktracer
-internal/byteorder
+	cd obj-i686-linux-gnu && go install -trimpath -v -p 10 github.com/opentracing/opentracing-go github.com/opentracing/opentracing-go/ext github.com/opentracing/opentracing-go/harness github.com/opentracing/opentracing-go/log github.com/opentracing/opentracing-go/mocktracer
+internal/goarch
+internal/godebugs
 internal/unsafeheader
-crypto/internal/alias
-cmp
+internal/coverage/rtcov
+internal/byteorder
+internal/runtime/atomic
+internal/cpu
 internal/goexperiment
 internal/profilerecord
-internal/itoa
+internal/runtime/syscall
 internal/goos
-internal/coverage/rtcov
-internal/godebugs
-internal/msan
-unicode/utf8
+runtime/internal/math
 internal/race
+internal/abi
+sync/atomic
+runtime/internal/sys
+internal/itoa
+internal/msan
 internal/asan
+cmp
 math/bits
-internal/goarch
+unicode/utf8
+internal/chacha8rand
+unicode
 container/list
-internal/runtime/atomic
-internal/cpu
+crypto/internal/alias
 crypto/internal/boring/sig
-sync/atomic
-unicode
-unicode/utf16
-internal/runtime/syscall
+internal/bytealg
 vendor/golang.org/x/crypto/cryptobyte/asn1
+unicode/utf16
+math
+internal/runtime/exithook
 vendor/golang.org/x/crypto/internal/alias
 internal/nettrace
 log/internal
 encoding
-runtime/internal/math
-runtime/internal/sys
-internal/abi
-internal/chacha8rand
-math
-internal/bytealg
-internal/runtime/exithook
 internal/stringslite
 runtime
-internal/weak
 iter
 crypto/subtle
 internal/reflectlite
+internal/weak
 sync
-maps
 slices
-internal/singleflight
-internal/testlog
+maps
 internal/bisect
+internal/testlog
+internal/singleflight
 runtime/cgo
-errors
 internal/godebug
+errors
 sort
 internal/oserror
 path
 io
+math/rand
 vendor/golang.org/x/net/dns/dnsmessage
 crypto/internal/edwards25519/field
-math/rand
-math/rand/v2
 strconv
 crypto/internal/nistec/fiat
 syscall
+math/rand/v2
 crypto/internal/edwards25519
-internal/concurrent
-hash
-crypto/internal/randutil
 bytes
+hash
 strings
-unique
 hash/crc32
-crypto/rc4
+crypto/internal/randutil
+internal/concurrent
+unique
+crypto/cipher
+vendor/golang.org/x/text/transform
+reflect
 crypto
+crypto/rc4
+bufio
+crypto/md5
 net/netip
-reflect
-vendor/golang.org/x/text/transform
-crypto/cipher
 net/http/internal/ascii
-net/http/internal/testcert
-bufio
 regexp/syntax
-crypto/md5
+net/http/internal/testcert
 crypto/internal/boring
 crypto/des
-crypto/hmac
+crypto/aes
 crypto/sha512
-crypto/sha256
+crypto/hmac
 crypto/sha1
-crypto/aes
 vendor/golang.org/x/crypto/hkdf
+crypto/sha256
 regexp
 internal/syscall/execenv
 internal/syscall/unix
@@ -446,68 +482,68 @@
 context
 io/fs
 internal/poll
+internal/fmtsort
+encoding/binary
 crypto/ecdh
 internal/filepathlite
 os
-internal/fmtsort
-encoding/binary
-encoding/base64
 vendor/golang.org/x/crypto/chacha20
 vendor/golang.org/x/crypto/internal/poly1305
+encoding/base64
 vendor/golang.org/x/crypto/chacha20poly1305
 encoding/pem
+fmt
+vendor/golang.org/x/sys/cpu
 internal/sysinfo
 path/filepath
-vendor/golang.org/x/sys/cpu
-fmt
 net
 vendor/golang.org/x/crypto/sha3
-github.com/opentracing/opentracing-go/log
-encoding/hex
-net/http/internal
 net/url
 log
-github.com/pmezard/go-difflib/difflib
-mime/quotedprintable
-vendor/golang.org/x/net/http2/hpack
-runtime/debug
-compress/flate
+github.com/opentracing/opentracing-go/log
 mime
-flag
-runtime/trace
-encoding/json
-vendor/golang.org/x/text/unicode/norm
-gopkg.in/yaml.v3
+encoding/hex
+compress/flate
+vendor/golang.org/x/net/http2/hpack
 math/big
+vendor/golang.org/x/text/unicode/norm
+mime/quotedprintable
+net/http/internal
+encoding/json
 github.com/davecgh/go-spew/spew
+github.com/pmezard/go-difflib/difflib
 vendor/golang.org/x/text/unicode/bidi
-testing
+gopkg.in/yaml.v3
 compress/gzip
+flag
+runtime/debug
+runtime/trace
 vendor/golang.org/x/text/secure/bidirule
 vendor/golang.org/x/net/idna
+testing
 crypto/rand
 crypto/elliptic
-crypto/internal/bigmod
 crypto/internal/boring/bbig
-crypto/dsa
+crypto/internal/bigmod
 encoding/asn1
-crypto/internal/hpke
+crypto/dsa
 crypto/ed25519
+crypto/internal/hpke
 crypto/internal/mlkem768
 crypto/rsa
-crypto/x509/pkix
 vendor/golang.org/x/crypto/cryptobyte
+crypto/x509/pkix
 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
 crypto/tls
 net/http/httptrace
 net/http
-github.com/opentracing/opentracing-go
 net/http/httptest
+github.com/opentracing/opentracing-go
 github.com/opentracing/opentracing-go/ext
 github.com/opentracing/opentracing-go/mocktracer
 github.com/stretchr/testify/assert
@@ -515,7 +551,7 @@
 github.com/stretchr/testify/suite
 github.com/opentracing/opentracing-go/harness
    dh_auto_test -O--buildsystem=golang
-	cd obj-i686-linux-gnu && go test -vet=off -v -p 22 github.com/opentracing/opentracing-go github.com/opentracing/opentracing-go/ext github.com/opentracing/opentracing-go/harness github.com/opentracing/opentracing-go/log github.com/opentracing/opentracing-go/mocktracer
+	cd obj-i686-linux-gnu && go test -vet=off -v -p 10 github.com/opentracing/opentracing-go github.com/opentracing/opentracing-go/ext github.com/opentracing/opentracing-go/harness github.com/opentracing/opentracing-go/log github.com/opentracing/opentracing-go/mocktracer
 === RUN   TestIsGlobalTracerRegisteredDefaultIsFalse
 --- PASS: TestIsGlobalTracerRegisteredDefaultIsFalse (0.00s)
 === RUN   TestAfterSettingGlobalTracerIsGlobalTracerRegisteredReturnsTrue
@@ -541,7 +577,7 @@
 === RUN   TestHTTPHeaderExtract
 --- PASS: TestHTTPHeaderExtract (0.00s)
 PASS
-ok  	github.com/opentracing/opentracing-go	0.004s
+ok  	github.com/opentracing/opentracing-go	0.010s
 === RUN   TestLogError
 --- PASS: TestLogError (0.00s)
 === RUN   TestPeerTags
@@ -559,7 +595,7 @@
 === RUN   TestMessageBusConsumerTags
 --- PASS: TestMessageBusConsumerTags (0.00s)
 PASS
-ok  	github.com/opentracing/opentracing-go/ext	0.004s
+ok  	github.com/opentracing/opentracing-go/ext	0.008s
 === RUN   TestAPI
 === RUN   TestAPI/TestBinaryPropagation
     api_checkers.go:336: CheckExtract capability not set, skipping
@@ -595,7 +631,7 @@
 === RUN   TestAPI/TestUnknownFormat
     api_checkers.go:378: CheckInject capability not set, skipping
     api_checkers.go:385: CheckExtract capability not set, skipping
---- PASS: TestAPI (0.00s)
+--- PASS: TestAPI (0.01s)
     --- PASS: TestAPI/TestBinaryPropagation (0.00s)
     --- PASS: TestAPI/TestContextBaggage (0.00s)
     --- PASS: TestAPI/TestHTTPPropagation (0.00s)
@@ -613,7 +649,7 @@
     --- PASS: TestAPI/TestTextPropagation (0.00s)
     --- PASS: TestAPI/TestUnknownFormat (0.00s)
 PASS
-ok  	github.com/opentracing/opentracing-go/harness	0.006s
+ok  	github.com/opentracing/opentracing-go/harness	0.013s
 === RUN   TestFieldString
 --- PASS: TestFieldString (0.00s)
 === RUN   TestNoopDoesNotMarshal
@@ -627,7 +663,7 @@
     --- PASS: TestInterleavedKVToFields/non_string_key (0.00s)
     --- PASS: TestInterleavedKVToFields/happy_path (0.00s)
 PASS
-ok  	github.com/opentracing/opentracing-go/log	0.004s
+ok  	github.com/opentracing/opentracing-go/log	0.011s
 === RUN   TestMockTracer_StartSpan
 --- PASS: TestMockTracer_StartSpan (0.00s)
 === RUN   TestMockSpan_SetOperationName
@@ -651,7 +687,7 @@
 === RUN   TestMockSpan_Races
 --- PASS: TestMockSpan_Races (0.00s)
 PASS
-ok  	github.com/opentracing/opentracing-go/mocktracer	0.004s
+ok  	github.com/opentracing/opentracing-go/mocktracer	0.009s
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=golang
    dh_prep -O--buildsystem=golang
@@ -678,12 +714,14 @@
 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/62402/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/62402/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/24695 and its subdirectories
-I: Current time: Mon Jan  5 06:00:48 -12 2026
-I: pbuilder-time-stamp: 1767636048
+I: removing directory /srv/workspace/pbuilder/62402 and its subdirectories
+I: Current time: Wed Dec  4 01:39:42 +14 2024
+I: pbuilder-time-stamp: 1733225982