Diff of the two buildlogs:

--
--- b1/build.log	2024-04-07 16:47:45.097509059 +0000
+++ b2/build.log	2024-04-07 16:48:41.423110975 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Apr  7 04:45:45 -12 2024
-I: pbuilder-time-stamp: 1712508345
+I: Current time: Sun May 11 13:10:48 +14 2025
+I: pbuilder-time-stamp: 1746918648
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -26,54 +26,86 @@
 dpkg-source: info: unpacking golang-github-eknkc-amber_0.0~git20171010.cdade1c-2.debian.tar.xz
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/49916/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/21811/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 May 10 23:10 /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/21811/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/21811/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=8 '
-  DISTRIBUTION='trixie'
-  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]="21" [3]="1" [4]="release" [5]="i686-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=i386
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=21 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=i686
+  HOST_ARCH=i386
   IFS=' 	
   '
-  INVOCATION_ID='dc99bb1379b84f02b975d2259efede47'
-  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='49916'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=f1e1664857f5413396560115923d851b
+  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=21811
   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.yBjNmdMz/pbuilderrc_RpkR --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.yBjNmdMz/b1 --logfile b1/build.log golang-github-eknkc-amber_0.0~git20171010.cdade1c-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://78.137.99.97:3128'
+  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.yBjNmdMz/pbuilderrc_g96F --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.yBjNmdMz/b2 --logfile b2/build.log golang-github-eknkc-amber_0.0~git20171010.cdade1c-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://85.184.249.68:3128
 I: uname -a
-  Linux ionos2-i386 6.1.0-18-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.76-1 (2024-02-01) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-18-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.76-1 (2024-02-01) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Apr  7 11:25 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/49916/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May  9 17:47 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/21811/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -149,7 +181,7 @@
 Get: 34 http://deb.debian.org/debian trixie/main i386 golang-src all 2:1.22~3 [5020 B]
 Get: 35 http://deb.debian.org/debian trixie/main i386 golang-go i386 2:1.22~3 [44.2 kB]
 Get: 36 http://deb.debian.org/debian trixie/main i386 golang-any i386 2:1.22~3 [5104 B]
-Fetched 61.0 MB in 1s (57.3 MB/s)
+Fetched 61.0 MB in 1s (96.6 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 ... 19876 files and directories currently installed.)
@@ -313,7 +345,11 @@
 fakeroot is already the newest version (1.33-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-eknkc-amber-0.0~git20171010.cdade1c/ && 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-eknkc-amber_0.0~git20171010.cdade1c-2_source.changes
+I: user script /srv/workspace/pbuilder/21811/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/21811/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-eknkc-amber-0.0~git20171010.cdade1c/ && 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-eknkc-amber_0.0~git20171010.cdade1c-2_source.changes
 dpkg-buildpackage: info: source package golang-github-eknkc-amber
 dpkg-buildpackage: info: source version 0.0~git20171010.cdade1c-2
 dpkg-buildpackage: info: source distribution unstable
@@ -331,142 +367,142 @@
    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 8 github.com/eknkc/amber github.com/eknkc/amber/amberc github.com/eknkc/amber/parser
+	cd obj-i686-linux-gnu && go install -trimpath -v -p 21 github.com/eknkc/amber github.com/eknkc/amber/amberc github.com/eknkc/amber/parser
+container/list
 internal/unsafeheader
 internal/coverage/rtcov
+cmp
+unicode/utf8
+unicode/utf16
+math/bits
 internal/goarch
+internal/race
+crypto/internal/alias
 internal/godebugs
-internal/goos
+encoding
 internal/cpu
-internal/goexperiment
-runtime/internal/atomic
-runtime/internal/syscall
-internal/race
-internal/chacha8rand
-internal/abi
-runtime/internal/math
-sync/atomic
-runtime/internal/sys
+crypto/internal/boring/sig
 unicode
-unicode/utf8
-container/list
-encoding
-internal/bytealg
-math/bits
+internal/goos
+runtime/internal/syscall
 internal/itoa
-cmp
-unicode/utf16
-crypto/internal/alias
-crypto/internal/boring/sig
+sync/atomic
+internal/goexperiment
 vendor/golang.org/x/crypto/cryptobyte/asn1
+internal/chacha8rand
+runtime/internal/math
 internal/nettrace
 vendor/golang.org/x/crypto/internal/alias
 log/internal
+runtime/internal/atomic
+runtime/internal/sys
+internal/abi
 slices
 math
+internal/bytealg
 runtime
+crypto/subtle
 internal/reflectlite
 sync
-crypto/subtle
 internal/testlog
-internal/bisect
 internal/singleflight
+internal/bisect
 runtime/cgo
-internal/godebug
 errors
+internal/godebug
 sort
-internal/intern
-math/rand
 internal/oserror
 internal/safefilepath
+path
 io
+vendor/golang.org/x/net/dns/dnsmessage
 strconv
-syscall
-path
 crypto/internal/nistec/fiat
-vendor/golang.org/x/net/dns/dnsmessage
+syscall
+internal/intern
+math/rand
 bytes
 strings
 hash
-hash/crc32
 crypto/internal/randutil
-vendor/golang.org/x/text/transform
+hash/crc32
 crypto
-reflect
-bufio
 crypto/rc4
 net/netip
+reflect
+vendor/golang.org/x/text/transform
 net/http/internal/ascii
-regexp/syntax
 go/build/constraint
+bufio
 html
+regexp/syntax
+regexp
+internal/syscall/execenv
 internal/syscall/unix
 time
-internal/syscall/execenv
-regexp
 crypto/internal/nistec
+internal/fmtsort
+encoding/binary
 context
 io/fs
 internal/poll
-encoding/binary
-internal/fmtsort
-os
-encoding/base64
+crypto/md5
 crypto/internal/edwards25519/field
-vendor/golang.org/x/crypto/internal/poly1305
+encoding/base64
 crypto/cipher
-crypto/md5
+vendor/golang.org/x/crypto/internal/poly1305
+os
 encoding/pem
 crypto/internal/edwards25519
-crypto/internal/boring
-vendor/golang.org/x/crypto/chacha20
 crypto/des
-crypto/aes
-crypto/ecdh
-crypto/sha512
+vendor/golang.org/x/crypto/chacha20
+crypto/internal/boring
 crypto/hmac
-crypto/sha1
+crypto/sha512
+crypto/ecdh
+crypto/aes
 crypto/sha256
+crypto/sha1
 vendor/golang.org/x/crypto/chacha20poly1305
 vendor/golang.org/x/crypto/hkdf
 io/ioutil
 path/filepath
 fmt
 net
-encoding/json
 encoding/hex
-log
+net/http/internal
 net/url
+log
+go/token
+mime/quotedprintable
+vendor/golang.org/x/net/http2/hpack
 compress/flate
+encoding/json
+flag
+text/template/parse
+mime
 vendor/golang.org/x/text/unicode/norm
 math/big
-vendor/golang.org/x/net/http2/hpack
+go/scanner
 vendor/golang.org/x/text/unicode/bidi
-mime
-mime/quotedprintable
+go/ast
 compress/gzip
-net/http/internal
-go/token
-text/template/parse
-flag
+text/template
 vendor/golang.org/x/text/secure/bidirule
-go/scanner
-go/ast
 vendor/golang.org/x/net/idna
-text/template
+go/internal/typeparams
+go/parser
 crypto/rand
-crypto/elliptic
 crypto/internal/boring/bbig
 crypto/internal/bigmod
+crypto/dsa
+crypto/elliptic
 encoding/asn1
 crypto/ed25519
-crypto/dsa
-go/internal/typeparams
+html/template
 crypto/rsa
-go/parser
 crypto/x509/pkix
 vendor/golang.org/x/crypto/cryptobyte
-html/template
 crypto/ecdsa
 vendor/golang.org/x/net/http/httpproxy
 net/textproto
@@ -483,7 +519,7 @@
 make[1]: Entering directory '/build/reproducible-path/golang-github-eknkc-amber-0.0~git20171010.cdade1c'
 cp -a samples /build/reproducible-path/golang-github-eknkc-amber-0.0~git20171010.cdade1c/obj-i686-linux-gnu/src/github.com/eknkc/amber/
 dh_auto_test -O--buildsystem=golang
-	cd obj-i686-linux-gnu && go test -vet=off -v -p 8 github.com/eknkc/amber github.com/eknkc/amber/amberc github.com/eknkc/amber/parser
+	cd obj-i686-linux-gnu && go test -vet=off -v -p 21 github.com/eknkc/amber github.com/eknkc/amber/amberc github.com/eknkc/amber/parser
 ?   	github.com/eknkc/amber/amberc	[no test files]
 ?   	github.com/eknkc/amber/parser	[no test files]
 === RUN   Test_Doctype
@@ -529,7 +565,7 @@
 === RUN   Test_StructMethodCall
 --- PASS: Test_StructMethodCall (0.00s)
 === RUN   Test_Multiple_File_Inheritance
---- PASS: Test_Multiple_File_Inheritance (0.01s)
+--- PASS: Test_Multiple_File_Inheritance (0.00s)
 === RUN   Test_Recursion_In_Blocks
 --- PASS: Test_Recursion_In_Blocks (0.00s)
 === RUN   Test_Dollar_In_TagAttributes
@@ -537,7 +573,7 @@
 === RUN   Test_ConditionEvaluation
 --- PASS: Test_ConditionEvaluation (0.00s)
 PASS
-ok  	github.com/eknkc/amber	0.031s
+ok  	github.com/eknkc/amber	0.011s
 rm -rf /build/reproducible-path/golang-github-eknkc-amber-0.0~git20171010.cdade1c/obj-i686-linux-gnu/src/github.com/eknkc/amber/samples
 make[1]: Leaving directory '/build/reproducible-path/golang-github-eknkc-amber-0.0~git20171010.cdade1c'
    create-stamp debian/debhelper-build-stamp
@@ -579,12 +615,14 @@
 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/21811/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/21811/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/49916 and its subdirectories
-I: Current time: Sun Apr  7 04:47:44 -12 2024
-I: pbuilder-time-stamp: 1712508464
+I: removing directory /srv/workspace/pbuilder/21811 and its subdirectories
+I: Current time: Sun May 11 13:11:38 +14 2025
+I: pbuilder-time-stamp: 1746918698