Diff of the two buildlogs:

--
--- b1/build.log	2025-08-15 07:45:20.839403694 +0000
+++ b2/build.log	2025-08-15 07:46:23.727487458 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu Aug 14 19:44:18 -12 2025
-I: pbuilder-time-stamp: 1755243858
+I: Current time: Fri Sep 18 04:08:22 +14 2026
+I: pbuilder-time-stamp: 1789654102
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/forky-reproducible-base.tgz]
 I: copying local configuration
@@ -22,53 +22,85 @@
 dpkg-source: info: unpacking golang-github-flosch-pongo2.v6_6.0.0-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/2051810/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/1815938/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink03-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 Sep 17 14:08 /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/1815938/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/1815938/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='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]="37" [3]="1" [4]="release" [5]="aarch64-unknown-linux-gnu")
+  BASH_VERSION='5.2.37(1)-release'
+  BUILDDIR=/build/reproducible-path
+  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=12 '
-  DISTRIBUTION='forky'
-  HOME='/root'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=forky
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  INVOCATION_ID='936c5f8dda8c425c9d886a407b9fe31d'
-  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='2051810'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=ad1de85e5a1e4a23b234b5abe0fe43b6
+  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=1815938
   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.6E38vUDT/pbuilderrc_qYtG --distribution forky --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/forky-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.6E38vUDT/b1 --logfile b1/build.log golang-github-flosch-pongo2.v6_6.0.0-2.dsc'
-  SUDO_GID='109'
-  SUDO_HOME='/var/lib/jenkins'
-  SUDO_UID='104'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://192.168.101.4:3128'
+  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.6E38vUDT/pbuilderrc_t8dC --distribution forky --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/forky-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.6E38vUDT/b2 --logfile b2/build.log golang-github-flosch-pongo2.v6_6.0.0-2.dsc'
+  SUDO_GID=109
+  SUDO_HOME=/var/lib/jenkins
+  SUDO_UID=104
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://192.168.101.4:3128
 I: uname -a
-  Linux codethink04-arm64 6.12.41+deb13-cloud-arm64 #1 SMP Debian 6.12.41-1 (2025-08-12) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.12.41+deb13-cloud-arm64 #1 SMP Debian 6.12.41-1 (2025-08-12) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 May 12 19:25 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/2051810/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May 12  2025 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/1815938/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -380,7 +412,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-flosch-pongo2.v6-6.0.0/ && 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-flosch-pongo2.v6_6.0.0-2_source.changes
+I: user script /srv/workspace/pbuilder/1815938/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for forky
+I: user script /srv/workspace/pbuilder/1815938/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-flosch-pongo2.v6-6.0.0/ && 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-flosch-pongo2.v6_6.0.0-2_source.changes
 dpkg-buildpackage: info: source package golang-github-flosch-pongo2.v6
 dpkg-buildpackage: info: source version 6.0.0-2
 dpkg-buildpackage: info: source distribution unstable
@@ -399,168 +435,168 @@
    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 12 github.com/flosch/pongo2
-internal/coverage/rtcov
-internal/byteorder
-internal/goarch
-internal/goos
 internal/godebugs
+internal/unsafeheader
 internal/goexperiment
+internal/goos
+internal/byteorder
 internal/profilerecord
-internal/msan
-internal/asan
-internal/unsafeheader
-internal/cpu
+internal/coverage/rtcov
+internal/goarch
 math/bits
-internal/runtime/syscall
 unicode
-sync/atomic
-internal/runtime/math
+internal/asan
 unicode/utf8
-internal/abi
+internal/msan
+internal/runtime/math
+internal/cpu
+sync/atomic
 cmp
 internal/itoa
-log/internal
+internal/runtime/syscall
 internal/chacha8rand
+log/internal
+internal/abi
 container/list
 crypto/internal/fips140/alias
+math
 crypto/internal/fips140deps/byteorder
 crypto/internal/fips140/subtle
 crypto/internal/boring/sig
 unicode/utf16
-math
 vendor/golang.org/x/crypto/cryptobyte/asn1
 vendor/golang.org/x/crypto/internal/alias
 internal/nettrace
 internal/runtime/atomic
-internal/bytealg
-internal/runtime/sys
 crypto/internal/fips140deps/cpu
+internal/runtime/sys
+internal/bytealg
 internal/runtime/exithook
 internal/stringslite
 internal/race
 internal/sync
 internal/runtime/maps
 runtime
+internal/reflectlite
 iter
 weak
-sync
 crypto/subtle
-internal/reflectlite
-slices
+sync
 maps
-internal/testlog
-internal/singleflight
+slices
+errors
+sort
 internal/bisect
+internal/singleflight
+internal/testlog
 unique
 runtime/cgo
-errors
-sort
-internal/oserror
-internal/godebug
-strconv
 io
+internal/oserror
 path
 vendor/golang.org/x/net/dns/dnsmessage
 math/rand/v2
+strconv
 syscall
+internal/godebug
+bytes
 strings
 hash
-bytes
 crypto/internal/randutil
-math/rand
 crypto/internal/fips140deps/godebug
-hash/crc32
-crypto
-net/netip
+math/rand
 reflect
+net/netip
+crypto
+hash/crc32
 vendor/golang.org/x/text/transform
-bufio
-crypto/internal/impl
 crypto/internal/fips140
-net/http/internal/ascii
 regexp/syntax
+crypto/internal/impl
+net/http/internal/ascii
+bufio
 crypto/internal/fips140/sha256
-crypto/internal/fips140/sha3
 crypto/internal/fips140/sha512
 crypto/tls/internal/fips140tls
-crypto/internal/fips140/hmac
+crypto/internal/fips140/sha3
+time
+internal/syscall/unix
+internal/syscall/execenv
 crypto/sha3
+crypto/internal/fips140/hmac
 crypto/internal/fips140/check
 crypto/internal/fips140hash
-crypto/internal/fips140/aes
-crypto/internal/fips140/nistec/fiat
+crypto/internal/fips140/edwards25519/field
 crypto/internal/fips140/bigmod
 crypto/internal/fips140/hkdf
 crypto/internal/fips140/tls12
-crypto/internal/fips140/edwards25519/field
+crypto/internal/fips140/aes
+crypto/internal/fips140/nistec/fiat
 crypto/internal/fips140/tls13
 crypto/internal/fips140/edwards25519
-internal/syscall/unix
-internal/syscall/execenv
-time
 regexp
-io/fs
-internal/poll
 context
-crypto/internal/fips140/nistec
+internal/poll
+io/fs
 internal/filepathlite
-encoding/binary
-internal/fmtsort
+crypto/internal/fips140/nistec
 os
+internal/fmtsort
+encoding/binary
 vendor/golang.org/x/crypto/internal/poly1305
 encoding/base64
 encoding/pem
-fmt
-io/ioutil
 crypto/internal/sysrand
+io/ioutil
+fmt
 path/filepath
 net
 crypto/internal/entropy
 crypto/internal/fips140/drbg
+crypto/internal/fips140/ecdh
 crypto/internal/fips140only
+crypto/internal/fips140/ecdsa
 crypto/internal/fips140/ed25519
-crypto/internal/fips140/ecdh
 crypto/internal/fips140/mlkem
-crypto/internal/fips140/ecdsa
-crypto/internal/fips140/rsa
 crypto/internal/fips140/aes/gcm
-crypto/md5
+crypto/internal/fips140/rsa
 crypto/rc4
+crypto/md5
 crypto/cipher
-crypto/internal/boring
-crypto/des
-vendor/golang.org/x/crypto/chacha20
 log
-math/big
 net/url
-vendor/golang.org/x/text/unicode/norm
-compress/flate
 vendor/golang.org/x/net/http2/hpack
-encoding/hex
+compress/flate
 mime
+encoding/hex
+mime/quotedprintable
+net/http/internal
+math/big
+vendor/golang.org/x/text/unicode/norm
+crypto/internal/boring
+crypto/des
 crypto/aes
 crypto/ecdh
 crypto/sha512
 crypto/hmac
+vendor/golang.org/x/crypto/chacha20
 crypto/sha1
-vendor/golang.org/x/crypto/chacha20poly1305
 crypto/sha256
 vendor/golang.org/x/text/unicode/bidi
-mime/quotedprintable
-net/http/internal
+vendor/golang.org/x/crypto/chacha20poly1305
 compress/gzip
 vendor/golang.org/x/text/secure/bidirule
 vendor/golang.org/x/net/idna
-crypto/rand
-crypto/elliptic
 crypto/internal/boring/bbig
-encoding/asn1
 crypto/dsa
-crypto/rsa
+encoding/asn1
+crypto/rand
+crypto/elliptic
 crypto/internal/hpke
 crypto/ed25519
-vendor/golang.org/x/crypto/cryptobyte
+crypto/rsa
 crypto/x509/pkix
+vendor/golang.org/x/crypto/cryptobyte
 crypto/ecdsa
 vendor/golang.org/x/net/http/httpproxy
 net/textproto
@@ -668,7 +704,7 @@
     pongo2_template_test.go:373: [Template  39] Testing 'template_tests/widthratio.tpl'
 === RUN   TestTemplates/040-template_tests/with.tpl
     pongo2_template_test.go:373: [Template  40] Testing 'template_tests/with.tpl'
---- PASS: TestTemplates (0.01s)
+--- PASS: TestTemplates (0.02s)
     --- PASS: TestTemplates/001-template_tests/autoescape.tpl (0.00s)
     --- PASS: TestTemplates/002-template_tests/comment.tpl (0.00s)
     --- PASS: TestTemplates/003-template_tests/complex.tpl (0.00s)
@@ -742,7 +778,7 @@
 OK: 2 passed
 --- PASS: Test (0.00s)
 PASS
-ok  	github.com/flosch/pongo2	0.043s
+ok  	github.com/flosch/pongo2	0.046s
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--builddirectory=_build -O--buildsystem=golang
    dh_prep -O--builddirectory=_build -O--buildsystem=golang
@@ -770,12 +806,14 @@
 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/1815938/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/1815938/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/2051810 and its subdirectories
-I: Current time: Thu Aug 14 19:45:20 -12 2025
-I: pbuilder-time-stamp: 1755243920
+I: removing directory /srv/workspace/pbuilder/1815938 and its subdirectories
+I: Current time: Fri Sep 18 04:09:22 +14 2026
+I: pbuilder-time-stamp: 1789654162