Diff of the two buildlogs:

--
--- b1/build.log	2024-11-14 13:05:36.905126966 +0000
+++ b2/build.log	2024-11-14 13:06:26.011341273 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu Nov 14 01:03:56 -12 2024
-I: pbuilder-time-stamp: 1731589436
+I: Current time: Thu Dec 18 09:28:38 +14 2025
+I: pbuilder-time-stamp: 1765999718
 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-jlaffaye-ftp_0.2.0-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/42317/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/1318/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos16-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 17 19:28 /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/1318/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/1318/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]="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=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='9d9a85af7f37471c840ee0b6fe21d77c'
-  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='42317'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=0b61d41546f648bfaa5ac82b518587b9
+  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=1318
   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.DjKMz5Vh/pbuilderrc_aOUI --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.DjKMz5Vh/b1 --logfile b1/build.log golang-github-jlaffaye-ftp_0.2.0-1.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.DjKMz5Vh/pbuilderrc_iFYP --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.DjKMz5Vh/b2 --logfile b2/build.log golang-github-jlaffaye-ftp_0.2.0-1.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 ionos12-i386 6.1.0-27-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.115-1 (2024-11-01) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-27-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.115-1 (2024-11-01) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Aug  4 21:30 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/42317/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Aug  4  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/1318/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -159,7 +191,7 @@
 Get: 40 http://deb.debian.org/debian unstable/main i386 golang-github-stretchr-objx-dev all 0.5.2-1 [25.5 kB]
 Get: 41 http://deb.debian.org/debian unstable/main i386 golang-gopkg-yaml.v3-dev all 3.0.1-3 [74.3 kB]
 Get: 42 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 (49.3 MB/s)
+Fetched 64.6 MB in 1s (56.5 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.)
@@ -342,7 +374,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-jlaffaye-ftp-0.2.0/ && 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-jlaffaye-ftp_0.2.0-1_source.changes
+I: user script /srv/workspace/pbuilder/1318/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/1318/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-jlaffaye-ftp-0.2.0/ && 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-jlaffaye-ftp_0.2.0-1_source.changes
 dpkg-buildpackage: info: source package golang-github-jlaffaye-ftp
 dpkg-buildpackage: info: source version 0.2.0-1
 dpkg-buildpackage: info: source distribution unstable
@@ -360,140 +396,140 @@
    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 11 github.com/jlaffaye/ftp
-internal/goarch
-internal/byteorder
-internal/unsafeheader
-internal/godebugs
+	cd _build && go install -trimpath -v -p 21 github.com/jlaffaye/ftp
 internal/goos
 internal/coverage/rtcov
-internal/cpu
-internal/goexperiment
 internal/profilerecord
-internal/runtime/atomic
+internal/unsafeheader
+container/list
+internal/godebugs
+unicode/utf8
+internal/byteorder
+internal/itoa
+internal/goarch
 internal/runtime/syscall
-runtime/internal/math
-internal/race
-internal/abi
+crypto/internal/alias
+internal/goexperiment
+internal/cpu
 sync/atomic
-internal/chacha8rand
-runtime/internal/sys
-unicode/utf8
-unicode
 internal/asan
-internal/itoa
 internal/msan
-container/list
+internal/race
 math/bits
-crypto/internal/alias
+internal/runtime/atomic
 crypto/internal/boring/sig
 cmp
+unicode
 unicode/utf16
-vendor/golang.org/x/crypto/cryptobyte/asn1
 vendor/golang.org/x/crypto/internal/alias
 internal/nettrace
+runtime/internal/math
+vendor/golang.org/x/crypto/cryptobyte/asn1
+runtime/internal/sys
+internal/abi
+internal/chacha8rand
+math
 internal/bytealg
 internal/runtime/exithook
-math
 internal/stringslite
 runtime
+iter
+internal/weak
 internal/reflectlite
 crypto/subtle
 sync
-iter
-internal/weak
 slices
-internal/bisect
-internal/testlog
 internal/singleflight
+internal/testlog
+internal/bisect
 runtime/cgo
-errors
 internal/godebug
-sort
+errors
 io
+sort
 internal/oserror
-crypto/internal/edwards25519/field
-syscall
-strconv
-crypto/internal/nistec/fiat
-vendor/golang.org/x/net/dns/dnsmessage
+hash
 path
-math/rand
+crypto/internal/randutil
 math/rand/v2
+vendor/golang.org/x/net/dns/dnsmessage
 bytes
+math/rand
 strings
-hash
-crypto/internal/randutil
+crypto/internal/edwards25519/field
+strconv
+crypto/internal/nistec/fiat
+syscall
 crypto/internal/edwards25519
 internal/concurrent
 unique
 crypto/cipher
+bufio
 crypto
-crypto/des
 crypto/rc4
-reflect
+crypto/des
 net/netip
-bufio
-crypto/md5
+reflect
 crypto/internal/boring
-crypto/aes
+crypto/md5
+crypto/hmac
 crypto/sha512
 crypto/sha1
-crypto/hmac
-vendor/golang.org/x/crypto/hkdf
+crypto/aes
 crypto/sha256
+vendor/golang.org/x/crypto/hkdf
 internal/syscall/execenv
 internal/syscall/unix
 time
+crypto/internal/nistec
 context
 io/fs
 internal/poll
-crypto/internal/nistec
-internal/filepathlite
-os
+crypto/ecdh
 internal/fmtsort
-encoding/binary
 github.com/hashicorp/errwrap
-crypto/ecdh
-vendor/golang.org/x/crypto/internal/poly1305
+encoding/binary
+internal/filepathlite
+os
 encoding/base64
+vendor/golang.org/x/crypto/internal/poly1305
 vendor/golang.org/x/crypto/chacha20
 encoding/pem
 vendor/golang.org/x/crypto/chacha20poly1305
-fmt
-vendor/golang.org/x/sys/cpu
 path/filepath
-net
+vendor/golang.org/x/sys/cpu
+fmt
 vendor/golang.org/x/crypto/sha3
 encoding/hex
-math/big
 net/url
 github.com/hashicorp/go-multierror
-crypto/elliptic
-crypto/internal/bigmod
+math/big
+net
 crypto/internal/boring/bbig
-crypto/rand
 crypto/dsa
+crypto/elliptic
+crypto/rand
 encoding/asn1
-crypto/ed25519
+crypto/internal/bigmod
 crypto/internal/hpke
+crypto/ed25519
 crypto/internal/mlkem768
 crypto/rsa
-vendor/golang.org/x/crypto/cryptobyte
 crypto/x509/pkix
+vendor/golang.org/x/crypto/cryptobyte
 crypto/ecdsa
-crypto/x509
 net/textproto
+crypto/x509
 crypto/tls
 github.com/jlaffaye/ftp
    debian/rules override_dh_auto_test
 make[1]: Entering directory '/build/reproducible-path/golang-github-jlaffaye-ftp-0.2.0'
 dh_auto_test -O--buildsystem=golang -- -short
-	cd _build && go test -vet=off -v -p 11 -short github.com/jlaffaye/ftp
+	cd _build && go test -vet=off -v -p 21 -short github.com/jlaffaye/ftp
 === RUN   TestConnPASV
---- PASS: TestConnPASV (0.03s)
+--- PASS: TestConnPASV (0.00s)
 === RUN   TestConnEPSV
---- PASS: TestConnEPSV (0.03s)
+--- PASS: TestConnEPSV (0.00s)
 === RUN   TestConnect
 --- PASS: TestConnect (0.00s)
 === RUN   TestTimeout
@@ -502,7 +538,7 @@
 === RUN   TestWrongLogin
 --- PASS: TestWrongLogin (0.00s)
 === RUN   TestDeleteDirRecur
---- PASS: TestDeleteDirRecur (0.01s)
+--- PASS: TestDeleteDirRecur (0.00s)
 === RUN   TestMissingFolderDeleteDirRecur
 --- PASS: TestMissingFolderDeleteDirRecur (0.00s)
 === RUN   TestListCurrentDir
@@ -632,7 +668,7 @@
 === RUN   TestCurInit
 --- PASS: TestCurInit (0.00s)
 PASS
-ok  	github.com/jlaffaye/ftp	0.133s
+ok  	github.com/jlaffaye/ftp	0.027s
 make[1]: Leaving directory '/build/reproducible-path/golang-github-jlaffaye-ftp-0.2.0'
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--builddirectory=_build -O--buildsystem=golang
@@ -660,12 +696,14 @@
 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/1318/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/1318/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/42317 and its subdirectories
-I: Current time: Thu Nov 14 01:05:35 -12 2024
-I: pbuilder-time-stamp: 1731589535
+I: removing directory /srv/workspace/pbuilder/1318 and its subdirectories
+I: Current time: Thu Dec 18 09:29:24 +14 2025
+I: pbuilder-time-stamp: 1765999764