Diff of the two buildlogs:

--
--- b1/build.log	2023-04-22 08:21:49.149361964 +0000
+++ b2/build.log	2023-04-22 08:23:44.964226940 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Fri Apr 21 20:19:59 -12 2023
-I: pbuilder-time-stamp: 1682151599
+I: Current time: Sat May 25 04:44:51 +14 2024
+I: pbuilder-time-stamp: 1716561891
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/bookworm-reproducible-base.tgz]
 I: copying local configuration
@@ -16,7 +16,7 @@
 I: copying [./prometheus-varnish-exporter_1.6.1.orig.tar.gz]
 I: copying [./prometheus-varnish-exporter_1.6.1-1.debian.tar.xz]
 I: Extracting source
-gpgv: Signature made Thu Aug 11 00:23:01 2022 -12
+gpgv: Signature made Fri Aug 12 02:23:01 2022 +14
 gpgv:                using RSA key 9545969619281C17FFAC5891D5085A0750FDB7A3
 gpgv: Can't check signature: No public key
 dpkg-source: warning: cannot verify inline signature for ./prometheus-varnish-exporter_1.6.1-1.dsc: no acceptable signature found
@@ -25,52 +25,84 @@
 dpkg-source: info: unpacking prometheus-varnish-exporter_1.6.1-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/17806/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/19146/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink15-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 May 25 04:45 /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/19146/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/19146/tmp/hooks/D02_print_environment starting
 I: set
-  BUILDDIR='/build'
-  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]="15" [3]="1" [4]="release" [5]="aarch64-unknown-linux-gnu")
+  BASH_VERSION='5.2.15(1)-release'
+  BUILDDIR=/build
+  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=8'
-  DISTRIBUTION='bookworm'
-  HOME='/var/lib/jenkins'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=bookworm
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/var/lib/jenkins
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  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='17806'
-  PS1='# '
-  PS2='> '
+  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=19146
   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.hPN2pIPl/pbuilderrc_BPYa --distribution bookworm --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.hPN2pIPl/b1 --logfile b1/build.log prometheus-varnish-exporter_1.6.1-1.dsc'
-  SUDO_GID='117'
-  SUDO_UID='110'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  USERNAME='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://192.168.101.16:3128'
+  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.hPN2pIPl/pbuilderrc_ov4j --distribution bookworm --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.hPN2pIPl/b2 --logfile b2/build.log --extrapackages usrmerge prometheus-varnish-exporter_1.6.1-1.dsc'
+  SUDO_GID=117
+  SUDO_UID=110
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  USERNAME=root
+  _='I: set'
+  http_proxy=http://192.168.101.16:3128
 I: uname -a
-  Linux codethink16-arm64 4.15.0-209-generic #220-Ubuntu SMP Tue Mar 21 19:52:44 UTC 2023 aarch64 GNU/Linux
+  Linux i-capture-the-hostname 4.15.0-209-generic #220-Ubuntu SMP Tue Mar 21 19:52:44 UTC 2023 aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Apr 19 22:25 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/17806/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May 22 06:47 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/19146/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -180,7 +212,7 @@
 Get: 66 http://deb.debian.org/debian bookworm/main arm64 golang-github-mwitkow-go-conntrack-dev all 0.0~git20190716.2f06839-3 [14.6 kB]
 Get: 67 http://deb.debian.org/debian bookworm/main arm64 golang-src all 2:1.19~1 [5756 B]
 Get: 68 http://deb.debian.org/debian bookworm/main arm64 golang-go arm64 2:1.19~1 [45.0 kB]
-Fetched 111 MB in 2s (58.4 MB/s)
+Fetched 111 MB in 2s (58.9 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 ... 19616 files and directories currently installed.)
@@ -466,8 +498,17 @@
 Writing extended state information...
 Building tag database...
  -> Finished parsing the build-deps
+Reading package lists...
+Building dependency tree...
+Reading state information...
+usrmerge is already the newest version (35).
+0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/prometheus-varnish-exporter-1.6.1/ && 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  > ../prometheus-varnish-exporter_1.6.1-1_source.changes
+I: user script /srv/workspace/pbuilder/19146/tmp/hooks/A99_set_merged_usr starting
+Re-configuring usrmerge...
+I: user script /srv/workspace/pbuilder/19146/tmp/hooks/A99_set_merged_usr finished
+hostname: Temporary failure in name resolution
+I: Running cd /build/prometheus-varnish-exporter-1.6.1/ && 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  > ../prometheus-varnish-exporter_1.6.1-1_source.changes
 dpkg-buildpackage: info: source package prometheus-varnish-exporter
 dpkg-buildpackage: info: source version 1.6.1-1
 dpkg-buildpackage: info: source distribution unstable
@@ -487,40 +528,40 @@
    dh_auto_build -O--buildsystem=golang
 	cd obj-aarch64-linux-gnu && go install -trimpath -v -p 8 github.com/jonnenauha/prometheus_varnish_exporter
 internal/race
-internal/goos
 internal/goarch
-internal/goexperiment
+internal/goos
 internal/unsafeheader
-sync/atomic
+internal/goexperiment
 runtime/internal/syscall
+sync/atomic
 internal/cpu
+encoding
+internal/abi
+math/bits
 unicode/utf8
 unicode
-internal/abi
 runtime/internal/math
 runtime/internal/sys
-encoding
-math/bits
 internal/itoa
-unicode/utf16
 container/list
+unicode/utf16
+math
+internal/bytealg
+runtime/internal/atomic
 crypto/internal/subtle
 crypto/subtle
 crypto/internal/boring/sig
 vendor/golang.org/x/crypto/cryptobyte/asn1
 internal/nettrace
-internal/bytealg
-runtime/internal/atomic
 vendor/golang.org/x/crypto/internal/subtle
-google.golang.org/protobuf/internal/set
 google.golang.org/protobuf/internal/flags
-math
+google.golang.org/protobuf/internal/set
 runtime
 runtime/metrics
 internal/reflectlite
 sync
-google.golang.org/protobuf/internal/pragma
 internal/singleflight
+google.golang.org/protobuf/internal/pragma
 internal/testlog
 math/rand
 runtime/cgo
@@ -532,71 +573,71 @@
 path
 strconv
 crypto/internal/nistec/fiat
-vendor/golang.org/x/net/dns/dnsmessage
 syscall
+vendor/golang.org/x/net/dns/dnsmessage
 github.com/beorn7/perks/quantile
 bytes
 strings
 hash
 hash/crc32
-crypto/internal/randutil
-hash/fnv
 reflect
 crypto
+crypto/internal/randutil
 crypto/rc4
-bufio
 vendor/golang.org/x/text/transform
+hash/fnv
+bufio
 net/http/internal/ascii
 regexp/syntax
 github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg
+internal/syscall/execenv
 internal/syscall/unix
 time
-internal/syscall/execenv
 regexp
-io/fs
-context
 internal/poll
+context
+io/fs
 embed
-os
-encoding/binary
 internal/fmtsort
+encoding/binary
+os
 encoding/base64
-crypto/cipher
+vendor/golang.org/x/crypto/internal/poly1305
 crypto/internal/edwards25519/field
+crypto/cipher
 crypto/md5
-crypto/internal/nistec
-vendor/golang.org/x/crypto/internal/poly1305
 vendor/golang.org/x/crypto/curve25519/internal/field
+crypto/internal/nistec
 encoding/pem
 github.com/cespare/xxhash
-crypto/internal/edwards25519
-fmt
-internal/godebug
-internal/intern
-path/filepath
-crypto/internal/boring
+golang.org/x/sys/unix
 crypto/des
 vendor/golang.org/x/crypto/chacha20
-net/netip
+crypto/internal/boring
+crypto/internal/edwards25519
 crypto/aes
 crypto/sha512
+fmt
 crypto/hmac
 crypto/sha1
 crypto/sha256
+internal/godebug
 vendor/golang.org/x/crypto/chacha20poly1305
+internal/intern
+path/filepath
 vendor/golang.org/x/crypto/hkdf
 google.golang.org/protobuf/internal/detrand
 io/ioutil
+net/netip
 github.com/prometheus/procfs/internal/util
-golang.org/x/sys/unix
 os/exec
-net
-log
 flag
-encoding/json
+log
 compress/flate
+encoding/json
 math/big
 encoding/hex
+net
 net/url
 vendor/golang.org/x/crypto/curve25519
 vendor/golang.org/x/text/unicode/bidi
@@ -606,38 +647,38 @@
 mime
 mime/quotedprintable
 net/http/internal
-github.com/golang/protobuf/proto
-github.com/prometheus/common/model
 google.golang.org/protobuf/internal/errors
+github.com/golang/protobuf/proto
 vendor/golang.org/x/text/secure/bidirule
-google.golang.org/protobuf/encoding/protowire
+github.com/prometheus/common/model
 go/token
+google.golang.org/protobuf/encoding/protowire
+google.golang.org/protobuf/internal/version
+github.com/prometheus/procfs/internal/fs
 google.golang.org/protobuf/reflect/protoreflect
+runtime/debug
 crypto/rand
 crypto/elliptic
 crypto/internal/boring/bbig
 encoding/asn1
+crypto/dsa
 crypto/ed25519
 crypto/rsa
-crypto/dsa
 vendor/golang.org/x/net/idna
-google.golang.org/protobuf/internal/version
-github.com/prometheus/procfs/internal/fs
-runtime/debug
 google.golang.org/protobuf/internal/descfmt
-google.golang.org/protobuf/internal/strs
 google.golang.org/protobuf/internal/descopts
+google.golang.org/protobuf/internal/strs
 google.golang.org/protobuf/internal/encoding/messageset
-vendor/golang.org/x/crypto/cryptobyte
 google.golang.org/protobuf/internal/genid
-crypto/x509/pkix
 google.golang.org/protobuf/internal/encoding/text
+vendor/golang.org/x/crypto/cryptobyte
+crypto/x509/pkix
 google.golang.org/protobuf/internal/order
 google.golang.org/protobuf/reflect/protoregistry
 google.golang.org/protobuf/runtime/protoiface
 crypto/ecdsa
-google.golang.org/protobuf/internal/encoding/defval
 google.golang.org/protobuf/proto
+google.golang.org/protobuf/internal/encoding/defval
 google.golang.org/protobuf/encoding/prototext
 google.golang.org/protobuf/internal/filedesc
 github.com/golang/protobuf/ptypes/timestamp
@@ -667,14 +708,14 @@
 	cd obj-aarch64-linux-gnu && go test -vet=off -v -p 8 github.com/jonnenauha/prometheus_varnish_exporter
 === RUN   Test_VarnishVersion
     varnish_test.go:59: "varnishstat (varnish-4 revision)" > 4
-    varnish_test.go:59: "varnish 2.0" > 2.0
+    varnish_test.go:59: "varnishstat (varnish-3.0.5 revision 1a89b1f)" > 3.0.5 1a89b1f
     varnish_test.go:59: "varnish 1" > 1
     varnish_test.go:59: "varnishstat (varnish-6.5.1 revision 1dae23376bb5ea7a6b8e9e4b9ed95cdc9469fb64)" > 6.5.1 1dae23376bb5ea7a6b8e9e4b9ed95cdc9469fb64
     varnish_test.go:59: "varnishstat (varnish-5.2.0 revision 4c4875cbf)" > 5.2.0 4c4875cbf
     varnish_test.go:59: "varnishstat (varnish-4.1.0 revision 3041728)" > 4.1.0 3041728
-    varnish_test.go:59: "varnishstat (varnish-3.0.5 revision 1a89b1f)" > 3.0.5 1a89b1f
     varnish_test.go:59: "varnishstat (varnish-6.0.0 revision a068361dff0d25a0d85cf82a6e5fdaf315e06a7d)" > 6.0.0 a068361dff0d25a0d85cf82a6e5fdaf315e06a7d
     varnish_test.go:59: "varnishstat (varnish-4.1.10 revision 1d090c5a08f41c36562644bafcce9d3cb85d824f)" > 4.1.10 1d090c5a08f41c36562644bafcce9d3cb85d824f
+    varnish_test.go:59: "varnish 2.0" > 2.0
 --- PASS: Test_VarnishVersion (0.00s)
 === RUN   Test_VarnishBackendNames
     varnish_test.go:135: VBE.eu1_x.y-z:w(192.52.0.192,,8085).happy > eu1_x.y-z:w(192.52.0.192,,8085) > varnish_backend_happy
@@ -754,7 +795,7 @@
     varnish_test.go:333: Live metrics test only ran on CI
 --- SKIP: Test_VarnishMetrics_CI (0.00s)
 PASS
-ok  	github.com/jonnenauha/prometheus_varnish_exporter	0.011s
+ok  	github.com/jonnenauha/prometheus_varnish_exporter	0.012s
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=golang
    dh_prep -O--buildsystem=golang
@@ -789,8 +830,8 @@
 dpkg-gencontrol: warning: package prometheus-varnish-exporter: substitution variable ${misc:Static-Built-Using} unused, but is defined
    dh_md5sums -O--buildsystem=golang
    dh_builddeb -O--buildsystem=golang
-dpkg-deb: building package 'prometheus-varnish-exporter-dbgsym' in '../prometheus-varnish-exporter-dbgsym_1.6.1-1_arm64.deb'.
 dpkg-deb: building package 'prometheus-varnish-exporter' in '../prometheus-varnish-exporter_1.6.1-1_arm64.deb'.
+dpkg-deb: building package 'prometheus-varnish-exporter-dbgsym' in '../prometheus-varnish-exporter-dbgsym_1.6.1-1_arm64.deb'.
  dpkg-genbuildinfo --build=binary -O../prometheus-varnish-exporter_1.6.1-1_arm64.buildinfo
  dpkg-genchanges --build=binary -O../prometheus-varnish-exporter_1.6.1-1_arm64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -798,12 +839,14 @@
 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/19146/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/19146/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/17806 and its subdirectories
-I: Current time: Fri Apr 21 20:21:48 -12 2023
-I: pbuilder-time-stamp: 1682151708
+I: removing directory /srv/workspace/pbuilder/19146 and its subdirectories
+I: Current time: Sat May 25 04:46:43 +14 2024
+I: pbuilder-time-stamp: 1716562003