Diff of the two buildlogs:

--
--- b1/build.log	2024-04-26 12:47:37.669903049 +0000
+++ b2/build.log	2024-04-26 13:00:40.984502542 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Fri Apr 26 00:37:35 -12 2024
-I: pbuilder-time-stamp: 1714135055
+I: Current time: Sat Apr 27 02:47:53 +14 2024
+I: pbuilder-time-stamp: 1714135673
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -26,52 +26,84 @@
 dpkg-source: info: unpacking golang-github-jackc-pgx_4.18.1-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/4787/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/11741/tmp/hooks/D01_modify_environment starting
+debug: Running on ff64a.
+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 Apr 26 12:49 /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/11741/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/11741/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='armhf'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=3 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='armhf'
+  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]="arm-unknown-linux-gnueabihf")
+  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=armhf
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=6 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=arm
+  HOST_ARCH=armhf
   IFS=' 	
   '
-  INVOCATION_ID='8b4c08637a504fdb9b671bc6d7f62f64'
-  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='4787'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=486d8b7e8ed84cbeae6cce0f27914d9a
+  LANG=C
+  LANGUAGE=it_CH:it
+  LC_ALL=C
+  MACHTYPE=arm-unknown-linux-gnueabihf
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnueabihf
+  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=11741
   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.jzxZXu3g/pbuilderrc_pg3l --distribution trixie --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/trixie-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.jzxZXu3g/b1 --logfile b1/build.log golang-github-jackc-pgx_4.18.1-1.dsc'
-  SUDO_GID='113'
-  SUDO_UID='107'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://10.0.0.15:3142/'
+  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.jzxZXu3g/pbuilderrc_rzu0 --distribution trixie --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/trixie-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.jzxZXu3g/b2 --logfile b2/build.log golang-github-jackc-pgx_4.18.1-1.dsc'
+  SUDO_GID=114
+  SUDO_UID=109
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://10.0.0.15:3142/
 I: uname -a
-  Linux cbxi4a 6.1.0-20-armmp #1 SMP Debian 6.1.85-1 (2024-04-11) armv7l GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-20-arm64 #1 SMP Debian 6.1.85-1 (2024-04-11) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Apr 24 11:27 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/4787/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Apr 24 11:26 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/11741/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -230,7 +262,7 @@
 Get: 89 http://deb.debian.org/debian trixie/main armhf golang-github-jcmturner-gokrb5.v8-dev all 8.4.3-2 [119 kB]
 Get: 90 http://deb.debian.org/debian trixie/main armhf golang-github-lib-pq-dev all 1.10.9-2 [86.6 kB]
 Get: 91 http://deb.debian.org/debian trixie/main armhf golang-github-jackc-pgtype-dev all 1.10.0-4 [92.5 kB]
-Fetched 70.3 MB in 7s (9577 kB/s)
+Fetched 70.3 MB in 7s (9895 kB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package golang-golang-x-sys-dev.
 (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 ... 19468 files and directories currently installed.)
@@ -609,7 +641,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-jackc-pgx-4.18.1/ && 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-jackc-pgx_4.18.1-1_source.changes
+I: user script /srv/workspace/pbuilder/11741/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/11741/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-jackc-pgx-4.18.1/ && 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-jackc-pgx_4.18.1-1_source.changes
 dpkg-buildpackage: info: source package golang-github-jackc-pgx
 dpkg-buildpackage: info: source version 4.18.1-1
 dpkg-buildpackage: info: source distribution unstable
@@ -678,196 +714,196 @@
 src/github.com/jackc/pgx/v4/stdlib/sql.go
 src/github.com/jackc/pgx/v4/stdlib/bench_test.go
 src/github.com/jackc/pgx/v4/stdlib/sql_test.go
-	cd _build && go install -trimpath -v -p 3 github.com/jackc/pgx/v4 github.com/jackc/pgx/v4/internal/sanitize github.com/jackc/pgx/v4/log/kitlogadapter github.com/jackc/pgx/v4/log/log15adapter github.com/jackc/pgx/v4/log/logrusadapter github.com/jackc/pgx/v4/log/testingadapter github.com/jackc/pgx/v4/log/zapadapter github.com/jackc/pgx/v4/log/zerologadapter github.com/jackc/pgx/v4/pgxpool github.com/jackc/pgx/v4/stdlib
-internal/unsafeheader
-internal/goarch
-internal/cpu
+	cd _build && go install -trimpath -v -p 6 github.com/jackc/pgx/v4 github.com/jackc/pgx/v4/internal/sanitize github.com/jackc/pgx/v4/log/kitlogadapter github.com/jackc/pgx/v4/log/log15adapter github.com/jackc/pgx/v4/log/logrusadapter github.com/jackc/pgx/v4/log/testingadapter github.com/jackc/pgx/v4/log/zapadapter github.com/jackc/pgx/v4/log/zerologadapter github.com/jackc/pgx/v4/pgxpool github.com/jackc/pgx/v4/stdlib
 internal/coverage/rtcov
-internal/abi
-internal/chacha8rand
-internal/bytealg
-internal/godebugs
+internal/goarch
+internal/unsafeheader
 internal/goexperiment
+internal/godebugs
 internal/goos
-runtime/internal/atomic
+internal/cpu
+runtime/internal/syscall
+internal/abi
 runtime/internal/math
+internal/chacha8rand
 runtime/internal/sys
-runtime/internal/syscall
 internal/race
 sync/atomic
-unicode
 unicode/utf8
+unicode
+internal/bytealg
+runtime/internal/atomic
 internal/itoa
 math/bits
-math
-runtime
 cmp
-slices
 crypto/internal/alias
 crypto/internal/boring/sig
 container/list
 unicode/utf16
+math
+slices
 vendor/golang.org/x/crypto/cryptobyte/asn1
 internal/nettrace
 vendor/golang.org/x/crypto/internal/alias
 encoding
 log/internal
+runtime
 crypto/subtle
 sync
 internal/reflectlite
 internal/testlog
-internal/bisect
 internal/singleflight
+go.uber.org/zap/internal/pool
+internal/bisect
 runtime/cgo
-internal/godebug
 errors
+sort
 internal/oserror
 io
+internal/safefilepath
+strconv
 syscall
 bytes
-strconv
+path
+strings
+hash
+crypto/internal/randutil
+internal/godebug
+math/rand
+crypto/internal/nistec/fiat
+vendor/golang.org/x/net/dns/dnsmessage
+crypto
 reflect
+crypto/rc4
+internal/intern
+net/netip
 time
-sort
-context
 internal/syscall/unix
-internal/poll
-internal/safefilepath
 internal/syscall/execenv
-path
+github.com/jackc/chunkreader/v2
+bufio
+regexp/syntax
+golang.org/x/text/internal/tag
+golang.org/x/text/transform
+golang.org/x/text/runes
+golang.org/x/text/width
+hash/crc32
+vendor/golang.org/x/text/transform
+net/http/internal/ascii
+regexp
+context
+internal/poll
 io/fs
-strings
+github.com/jackc/pgconn/internal/ctxwatch
+go.uber.org/zap/buffer
+github.com/jackc/puddle
+crypto/internal/nistec
+go.uber.org/zap/internal/bufferpool
+go.uber.org/zap/internal/stacktrace
 os
-hash
-crypto
-crypto/internal/randutil
 internal/fmtsort
 encoding/binary
-math/rand
-crypto/internal/nistec/fiat
+crypto/internal/edwards25519/field
+crypto/md5
+vendor/golang.org/x/crypto/internal/poly1305
+encoding/base64
 crypto/cipher
 fmt
+net
+path/filepath
+encoding/pem
+crypto/internal/edwards25519
 crypto/internal/boring
+crypto/des
 crypto/hmac
-crypto/md5
 crypto/sha256
 crypto/aes
-crypto/des
-crypto/internal/edwards25519/field
-database/sql/driver
-encoding/hex
-math/big
+crypto/ecdh
 crypto/sha512
-crypto/internal/edwards25519
-crypto/rc4
 crypto/sha1
-encoding/base64
-encoding/pem
-crypto/internal/nistec
-vendor/golang.org/x/net/dns/dnsmessage
-crypto/rand
-crypto/internal/bigmod
-crypto/internal/boring/bbig
-encoding/asn1
-crypto/ecdh
-crypto/elliptic
-crypto/ed25519
-crypto/rsa
-crypto/dsa
-vendor/golang.org/x/crypto/cryptobyte
-crypto/x509/pkix
-internal/intern
-net/netip
-net/url
-crypto/ecdsa
-path/filepath
-net
 vendor/golang.org/x/crypto/chacha20
-vendor/golang.org/x/crypto/internal/poly1305
 vendor/golang.org/x/crypto/hkdf
-vendor/golang.org/x/crypto/chacha20poly1305
-github.com/jackc/chunkreader/v2
-github.com/jackc/pgconn/internal/ctxwatch
 github.com/jackc/pgio
-bufio
-regexp/syntax
-encoding/json
-regexp
-github.com/jackc/pgproto3/v2
 github.com/jackc/pgpassfile
-github.com/jackc/pgservicefile
 golang.org/x/crypto/pbkdf2
-golang.org/x/text/internal/tag
+io/ioutil
+go.uber.org/zap/internal/exit
+golang.org/x/sys/unix
+vendor/golang.org/x/crypto/chacha20poly1305
+encoding/hex
+database/sql/driver
+math/big
+net/url
+encoding/json
+github.com/jackc/pgservicefile
 golang.org/x/text/internal/language
-golang.org/x/text/transform
-golang.org/x/text/internal/language/compact
 golang.org/x/text/unicode/norm
+golang.org/x/text/internal/language/compact
+github.com/jackc/pgproto3/v2
 golang.org/x/text/language
+crypto/rand
+crypto/elliptic
+crypto/internal/bigmod
+crypto/internal/boring/bbig
+encoding/asn1
+crypto/ed25519
+crypto/rsa
+crypto/dsa
 golang.org/x/text/internal
-golang.org/x/text/runes
 log
-golang.org/x/text/unicode/bidi
 golang.org/x/text/cases
-golang.org/x/text/secure/bidirule
-golang.org/x/text/width
-io/ioutil
 os/user
-golang.org/x/text/secure/precis
+golang.org/x/text/unicode/bidi
+vendor/golang.org/x/crypto/cryptobyte
+crypto/x509/pkix
 database/sql
-crypto/x509
-github.com/jackc/pgtype
 github.com/jackc/pgx/v4/internal/sanitize
+golang.org/x/text/secure/bidirule
+crypto/ecdsa
 github.com/go-logfmt/logfmt
+golang.org/x/text/secure/precis
 github.com/go-kit/log
-crypto/tls
-github.com/go-kit/log/level
-golang.org/x/sys/unix
 github.com/sirupsen/logrus
-github.com/jackc/pgconn
+github.com/go-kit/log/level
 flag
 go.uber.org/atomic
-github.com/jackc/pgconn/stmtcache
-go.uber.org/zap/internal/pool
-go.uber.org/multierr
-go.uber.org/zap/buffer
 go.uber.org/zap/internal/color
-go.uber.org/zap/internal/bufferpool
-go.uber.org/zap/internal/exit
-go.uber.org/zap/internal/stacktrace
-go.uber.org/zap/zapcore
 compress/flate
-hash/crc32
-compress/gzip
-vendor/golang.org/x/text/transform
+go.uber.org/multierr
 vendor/golang.org/x/text/unicode/bidi
-go.uber.org/zap/internal
+go.uber.org/zap/zapcore
 vendor/golang.org/x/text/unicode/norm
-vendor/golang.org/x/text/secure/bidirule
-github.com/jackc/pgx/v4
-net/textproto
 vendor/golang.org/x/net/http2/hpack
+compress/gzip
 mime
-vendor/golang.org/x/net/idna
-github.com/jackc/pgx/v4/log/kitlogadapter
-github.com/jackc/pgx/v4/log/log15adapter
-github.com/jackc/pgx/v4/log/logrusadapter
-github.com/jackc/pgx/v4/log/testingadapter
 mime/quotedprintable
-net/http/httptrace
-mime/multipart
 net/http/internal
-net/http/internal/ascii
+vendor/golang.org/x/text/secure/bidirule
 github.com/mattn/go-isatty
+crypto/x509
+github.com/jackc/pgtype
+net/textproto
 github.com/mattn/go-colorable
-vendor/golang.org/x/net/http/httpguts
-vendor/golang.org/x/net/http/httpproxy
 github.com/rs/zerolog/internal/json
-github.com/jackc/puddle
-net/http
-github.com/jackc/pgx/v4/pgxpool
+mime/multipart
+vendor/golang.org/x/net/idna
+go.uber.org/zap/internal
 github.com/rs/zerolog
-github.com/jackc/pgx/v4/stdlib
+vendor/golang.org/x/net/http/httpproxy
+vendor/golang.org/x/net/http/httpguts
+crypto/tls
+net/http/httptrace
+github.com/jackc/pgconn
+net/http
+github.com/jackc/pgconn/stmtcache
+github.com/jackc/pgx/v4
+github.com/jackc/pgx/v4/log/log15adapter
 github.com/jackc/pgx/v4/log/zerologadapter
+github.com/jackc/pgx/v4/log/kitlogadapter
+github.com/jackc/pgx/v4/log/logrusadapter
+github.com/jackc/pgx/v4/log/testingadapter
+github.com/jackc/pgx/v4/stdlib
+github.com/jackc/pgx/v4/pgxpool
 go.uber.org/zap
 github.com/jackc/pgx/v4/log/zapadapter
    debian/rules override_dh_auto_test
@@ -904,12 +940,14 @@
 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/11741/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/11741/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/4787 and its subdirectories
-I: Current time: Fri Apr 26 00:47:30 -12 2024
-I: pbuilder-time-stamp: 1714135650
+I: removing directory /srv/workspace/pbuilder/11741 and its subdirectories
+I: Current time: Sat Apr 27 03:00:34 +14 2024
+I: pbuilder-time-stamp: 1714136434