Diff of the two buildlogs:

--
--- b1/build.log	2024-05-08 01:28:05.414274731 +0000
+++ b2/build.log	2024-05-08 01:33:54.307443658 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Jun  9 19:50:11 -12 2025
-I: pbuilder-time-stamp: 1749541811
+I: Current time: Wed May  8 15:28:08 +14 2024
+I: pbuilder-time-stamp: 1715131688
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -25,52 +25,84 @@
 dpkg-source: info: unpacking golang-github-victoriametrics-metrics_1.24.0+ds1-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/819407/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/3998544/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos11-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 May  8 01:28 /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/3998544/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/3998544/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'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=42 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='amd64'
+  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]="21" [3]="1" [4]="release" [5]="x86_64-pc-linux-gnu")
+  BASH_VERSION='5.2.21(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=20 '
+  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='af5cad161f614421aaca0393210fe448'
-  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='819407'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=e1348629fe424f06bad84c2937fa1296
+  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=3998544
   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.Ay1IaB0V/pbuilderrc_kLIc --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.Ay1IaB0V/b1 --logfile b1/build.log golang-github-victoriametrics-metrics_1.24.0+ds1-1.dsc'
-  SUDO_GID='110'
-  SUDO_UID='105'
-  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.Ay1IaB0V/pbuilderrc_85SO --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.Ay1IaB0V/b2 --logfile b2/build.log golang-github-victoriametrics-metrics_1.24.0+ds1-1.dsc'
+  SUDO_GID=111
+  SUDO_UID=106
+  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 ionos5-amd64 6.6.13+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.6.13-1~bpo12+1 (2024-02-15) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-21-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.90-1 (2024-05-03) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Jun  9 14:05 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/819407/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May  7 07:42 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/3998544/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -150,7 +182,7 @@
 Get: 36 http://deb.debian.org/debian unstable/main amd64 golang-any amd64 2:1.22~3 [5104 B]
 Get: 37 http://deb.debian.org/debian unstable/main amd64 golang-github-valyala-fastrand-dev all 1.1.0-2 [4212 B]
 Get: 38 http://deb.debian.org/debian unstable/main amd64 golang-github-valyala-histogram-dev all 1.2.0+ds-2 [4368 B]
-Fetched 62.7 MB in 1s (112 MB/s)
+Fetched 62.7 MB in 3s (24.7 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%
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(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
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(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19699 files and directories currently installed.)
@@ -317,7 +349,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-victoriametrics-metrics-1.24.0+ds1/ && 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-victoriametrics-metrics_1.24.0+ds1-1_source.changes
+I: user script /srv/workspace/pbuilder/3998544/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/3998544/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-victoriametrics-metrics-1.24.0+ds1/ && 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-victoriametrics-metrics_1.24.0+ds1-1_source.changes
 dpkg-buildpackage: info: source package golang-github-victoriametrics-metrics
 dpkg-buildpackage: info: source version 1.24.0+ds1-1
 dpkg-buildpackage: info: source distribution unstable
@@ -335,137 +371,137 @@
    dh_autoreconf -O--builddirectory=_build -O--buildsystem=golang
    dh_auto_configure -O--builddirectory=_build -O--buildsystem=golang
    dh_auto_build -O--builddirectory=_build -O--buildsystem=golang
-	cd _build && go install -trimpath -v -p 42 github.com/VictoriaMetrics/metrics
-internal/godebugs
-internal/goos
-internal/coverage/rtcov
-vendor/golang.org/x/crypto/internal/alias
-internal/nettrace
-unicode/utf16
-vendor/golang.org/x/crypto/cryptobyte/asn1
-internal/goexperiment
-log/internal
+	cd _build && go install -trimpath -v -p 20 github.com/VictoriaMetrics/metrics
+internal/itoa
 cmp
-unicode/utf8
-container/list
-internal/unsafeheader
-internal/race
-math/bits
+internal/godebugs
 crypto/internal/alias
-crypto/internal/boring/sig
-internal/itoa
-runtime/internal/atomic
 internal/goarch
+internal/race
+runtime/internal/atomic
 crypto/subtle
+unicode
+math/bits
+log/internal
 internal/cpu
-runtime/internal/syscall
 sync/atomic
-unicode
+internal/coverage/rtcov
+internal/goexperiment
+runtime/internal/syscall
+internal/unsafeheader
+internal/goos
+container/list
+unicode/utf8
+crypto/internal/boring/sig
+internal/abi
 internal/chacha8rand
 runtime/internal/math
+unicode/utf16
+vendor/golang.org/x/crypto/cryptobyte/asn1
+internal/nettrace
+vendor/golang.org/x/crypto/internal/alias
 runtime/internal/sys
-internal/abi
 slices
 internal/bytealg
 math
 runtime
 internal/reflectlite
 sync
+internal/bisect
 internal/testlog
 internal/singleflight
-internal/bisect
-runtime/cgo
 errors
 sort
-internal/godebug
+runtime/cgo
 io
 internal/oserror
-path
 internal/safefilepath
+path
+internal/godebug
 vendor/golang.org/x/net/dns/dnsmessage
 strconv
 crypto/internal/nistec/fiat
+bytes
+strings
 internal/intern
+hash
+crypto/internal/randutil
 math/rand
 syscall
-crypto/internal/randutil
-hash
-bytes
-strings
 hash/crc32
 vendor/golang.org/x/text/transform
-crypto/rc4
+reflect
 crypto
-net/http/internal/ascii
-bufio
+crypto/rc4
 net/netip
-reflect
+bufio
+net/http/internal/ascii
 regexp/syntax
 regexp
-internal/syscall/execenv
 internal/syscall/unix
 time
-github.com/valyala/fastrand
-context
+internal/syscall/execenv
 io/fs
 internal/poll
+github.com/valyala/fastrand
+context
 github.com/valyala/histogram
 embed
 internal/fmtsort
 encoding/binary
 os
+crypto/cipher
+crypto/internal/edwards25519/field
 encoding/base64
 crypto/md5
-crypto/internal/edwards25519/field
-crypto/cipher
 vendor/golang.org/x/crypto/internal/poly1305
 crypto/internal/nistec
 encoding/pem
-crypto/internal/edwards25519
 crypto/internal/boring
-vendor/golang.org/x/crypto/chacha20
 crypto/des
+vendor/golang.org/x/crypto/chacha20
+crypto/internal/edwards25519
+crypto/aes
+crypto/sha512
 crypto/hmac
 crypto/sha1
-crypto/sha512
 crypto/sha256
-crypto/aes
-vendor/golang.org/x/crypto/hkdf
 io/ioutil
-path/filepath
 fmt
 vendor/golang.org/x/sys/cpu
+path/filepath
+vendor/golang.org/x/crypto/hkdf
 net
-crypto/ecdh
 vendor/golang.org/x/crypto/chacha20poly1305
-log
+crypto/ecdh
+compress/flate
 encoding/hex
+log
+vendor/golang.org/x/net/http2/hpack
+math/big
+vendor/golang.org/x/text/unicode/norm
 net/url
+mime/quotedprintable
 net/http/internal
 mime
-mime/quotedprintable
-vendor/golang.org/x/net/http2/hpack
-compress/flate
-vendor/golang.org/x/text/unicode/norm
-math/big
 vendor/golang.org/x/text/unicode/bidi
 compress/gzip
 vendor/golang.org/x/text/secure/bidirule
 vendor/golang.org/x/net/idna
-crypto/internal/boring/bbig
-crypto/dsa
-encoding/asn1
 crypto/rand
 crypto/internal/bigmod
+crypto/internal/boring/bbig
+encoding/asn1
+crypto/dsa
 crypto/elliptic
 crypto/ed25519
 crypto/rsa
 vendor/golang.org/x/crypto/cryptobyte
 crypto/x509/pkix
 crypto/ecdsa
-vendor/golang.org/x/net/http/httpproxy
-net/textproto
 crypto/x509
+net/textproto
+vendor/golang.org/x/net/http/httpproxy
 vendor/golang.org/x/net/http/httpguts
 mime/multipart
 crypto/tls
@@ -473,7 +509,7 @@
 net/http
 github.com/VictoriaMetrics/metrics
    dh_auto_test -O--builddirectory=_build -O--buildsystem=golang
-	cd _build && go test -vet=off -v -p 42 github.com/VictoriaMetrics/metrics
+	cd _build && go test -vet=off -v -p 20 github.com/VictoriaMetrics/metrics
 === RUN   TestCounterSerial
 --- PASS: TestCounterSerial (0.00s)
 === RUN   TestCounterConcurrent
@@ -511,7 +547,7 @@
 === RUN   TestGetDefaultSet
 --- PASS: TestGetDefaultSet (0.00s)
 === RUN   TestUnregisterAllMetrics
---- PASS: TestUnregisterAllMetrics (0.00s)
+--- PASS: TestUnregisterAllMetrics (0.01s)
 === RUN   TestRegisterUnregisterSet
 --- PASS: TestRegisterUnregisterSet (0.00s)
 === RUN   TestInvalidName
@@ -535,11 +571,11 @@
 === RUN   TestGetOrCreateNotHistogram
 --- PASS: TestGetOrCreateNotHistogram (0.00s)
 === RUN   TestWritePrometheusSerial
---- PASS: TestWritePrometheusSerial (0.00s)
+--- PASS: TestWritePrometheusSerial (0.02s)
 === RUN   TestWritePrometheusConcurrent
---- PASS: TestWritePrometheusConcurrent (0.00s)
+--- PASS: TestWritePrometheusConcurrent (0.02s)
 === RUN   TestGetMaxFilesLimit
---- PASS: TestGetMaxFilesLimit (0.00s)
+--- PASS: TestGetMaxFilesLimit (0.01s)
 === RUN   TestGetOpenFDsCount
 --- PASS: TestGetOpenFDsCount (0.00s)
 === RUN   TestGetMemStats
@@ -557,7 +593,7 @@
 === RUN   TestSetUnregisterMetric
 --- PASS: TestSetUnregisterMetric (0.00s)
 === RUN   TestRegisterUnregister
---- PASS: TestRegisterUnregister (0.22s)
+--- PASS: TestRegisterUnregister (1.67s)
 === RUN   TestSummarySerial
 --- PASS: TestSummarySerial (0.00s)
 === RUN   TestSummaryConcurrent
@@ -567,7 +603,7 @@
 === RUN   TestSummaryInvalidQuantiles
 --- PASS: TestSummaryInvalidQuantiles (0.00s)
 === RUN   TestSummarySmallWindow
---- PASS: TestSummarySmallWindow (0.04s)
+--- PASS: TestSummarySmallWindow (0.06s)
 === RUN   TestGetOrCreateSummaryInvalidWindow
 --- PASS: TestGetOrCreateSummaryInvalidWindow (0.00s)
 === RUN   TestGetOrCreateSummaryInvalidQuantiles
@@ -593,7 +629,7 @@
 === RUN   ExampleSet
 --- PASS: ExampleSet (0.00s)
 PASS
-ok  	github.com/VictoriaMetrics/metrics	0.275s
+ok  	github.com/VictoriaMetrics/metrics	1.824s
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--builddirectory=_build -O--buildsystem=golang
    dh_prep -O--builddirectory=_build -O--buildsystem=golang
@@ -620,12 +656,14 @@
 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/3998544/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/3998544/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/819407 and its subdirectories
-I: Current time: Mon Jun  9 19:51:03 -12 2025
-I: pbuilder-time-stamp: 1749541863
+I: removing directory /srv/workspace/pbuilder/3998544 and its subdirectories
+I: Current time: Wed May  8 15:33:53 +14 2024
+I: pbuilder-time-stamp: 1715132033