Diff of the two buildlogs:

--
--- b1/build.log	2024-12-16 06:27:27.483448189 +0000
+++ b2/build.log	2024-12-16 06:29:11.214717051 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Dec 15 18:20:56 -12 2024
-I: pbuilder-time-stamp: 1734330056
+I: Current time: Mon Jan 19 02:50:30 +14 2026
+I: pbuilder-time-stamp: 1768740630
 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 debos_1.1.4-1.1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3149621/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/3570043/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos15-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 Jan 18 12:50 /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/3570043/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/3570043/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=20 '
-  DISTRIBUTION='trixie'
-  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]="37" [3]="1" [4]="release" [5]="x86_64-pc-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=amd64
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=42 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='f3177f5081284b8a819415ec417b5658'
-  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='3149621'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=3b7d4d6f46824d85a16089609725461a
+  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=3570043
   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.kGvh5xMF/pbuilderrc_Fbxj --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.kGvh5xMF/b1 --logfile b1/build.log debos_1.1.4-1.1.dsc'
-  SUDO_GID='111'
-  SUDO_UID='106'
-  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.kGvh5xMF/pbuilderrc_YCwh --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.kGvh5xMF/b2 --logfile b2/build.log debos_1.1.4-1.1.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://213.165.73.152:3128
 I: uname -a
-  Linux ionos11-amd64 6.1.0-28-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.11.5+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.11.5-1~bpo12+1 (2024-11-11) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3149621/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/3570043/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -283,7 +315,7 @@
 Get: 148 http://deb.debian.org/debian trixie/main amd64 libyaml-0-2 amd64 0.2.5-1+b2 [52.7 kB]
 Get: 149 http://deb.debian.org/debian trixie/main amd64 pandoc-data all 3.1.11.1-3 [459 kB]
 Get: 150 http://deb.debian.org/debian trixie/main amd64 pandoc amd64 3.1.11.1+ds-2 [26.4 MB]
-Fetched 155 MB in 5s (29.2 MB/s)
+Fetched 155 MB in 2s (68.0 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libpython3.12-minimal:amd64.
 (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 ... 19965 files and directories currently installed.)
@@ -788,8 +820,8 @@
 Setting up tzdata (2024b-4) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Mon Dec 16 06:24:21 UTC 2024.
-Universal Time is now:  Mon Dec 16 06:24:21 UTC 2024.
+Local time is now:      Sun Jan 18 12:51:20 UTC 2026.
+Universal Time is now:  Sun Jan 18 12:51:20 UTC 2026.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up golang-github-cespare-xxhash-dev (2.3.0-1) ...
@@ -913,7 +945,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/debos-1.1.4/ && 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  > ../debos_1.1.4-1.1_source.changes
+I: user script /srv/workspace/pbuilder/3570043/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/3570043/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/debos-1.1.4/ && 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  > ../debos_1.1.4-1.1_source.changes
 dpkg-buildpackage: info: source package debos
 dpkg-buildpackage: info: source version 1.1.4-1.1
 dpkg-buildpackage: info: source distribution unstable
@@ -937,184 +973,184 @@
    debian/rules override_dh_auto_build
 make[1]: Entering directory '/build/reproducible-path/debos-1.1.4'
 dh_auto_build
-	cd obj-x86_64-linux-gnu && go install -trimpath -v -p 20 github.com/go-debos/debos github.com/go-debos/debos/actions github.com/go-debos/debos/cmd/debos
-internal/goos
-internal/byteorder
+	cd obj-x86_64-linux-gnu && go install -trimpath -v -p 42 github.com/go-debos/debos github.com/go-debos/debos/actions github.com/go-debos/debos/cmd/debos
+vendor/golang.org/x/crypto/internal/alias
+internal/race
 internal/coverage/rtcov
-unicode
-cmp
-crypto/internal/alias
-unicode/utf8
 internal/goarch
+internal/itoa
+unicode/utf8
+internal/asan
 math/bits
+internal/byteorder
 internal/goexperiment
-internal/unsafeheader
-crypto/internal/boring/sig
 internal/cpu
-internal/runtime/atomic
-crypto/subtle
-sync/atomic
+unicode/utf16
 internal/runtime/syscall
-internal/race
 internal/profilerecord
+sync/atomic
+unicode
+internal/goos
+internal/unsafeheader
 internal/godebugs
-internal/itoa
-internal/abi
-runtime/internal/math
-internal/chacha8rand
-runtime/internal/sys
-internal/asan
-internal/msan
-github.com/klauspost/compress/internal/cpuinfo
-log/internal
-container/list
-github.com/ulikunitz/xz/internal/hash
-unicode/utf16
-vendor/golang.org/x/crypto/cryptobyte/asn1
-vendor/golang.org/x/crypto/internal/alias
 internal/nettrace
+cmp
+crypto/internal/alias
+internal/runtime/atomic
+github.com/ulikunitz/xz/internal/hash
+crypto/subtle
+crypto/internal/boring/sig
+log/internal
 encoding
+github.com/klauspost/compress/internal/cpuinfo
+vendor/golang.org/x/crypto/cryptobyte/asn1
+internal/msan
+container/list
+runtime/internal/math
+runtime/internal/sys
+internal/abi
+internal/chacha8rand
 internal/bytealg
 math
 internal/runtime/exithook
 internal/stringslite
-runtime
 github.com/klauspost/compress
+runtime
+internal/weak
+iter
 internal/reflectlite
 sync
-iter
-internal/weak
-slices
 maps
-internal/bisect
-internal/singleflight
+slices
 internal/testlog
+internal/singleflight
+internal/bisect
 runtime/cgo
-errors
 internal/godebug
+errors
+sort
+math/rand
+internal/oserror
+path
 io
 strconv
-sort
-math/rand/v2
 crypto/internal/edwards25519/field
 vendor/golang.org/x/net/dns/dnsmessage
-internal/oserror
-path
-math/rand
-crypto/internal/nistec/fiat
+math/rand/v2
 syscall
-bytes
+crypto/internal/nistec/fiat
 hash
 crypto/internal/randutil
-internal/concurrent
+bytes
 strings
+hash/adler32
 hash/crc32
 hash/crc64
-hash/adler32
-unique
+internal/concurrent
 crypto/internal/edwards25519
+unique
 crypto
-crypto/rc4
 encoding/base32
+crypto/rc4
 reflect
 crypto/md5
-crypto/cipher
+regexp/syntax
+net/http/internal/ascii
+html
 vendor/golang.org/x/text/transform
-net/netip
-crypto/internal/boring
 bufio
-net/http/internal/ascii
+crypto/cipher
+net/netip
 crypto/des
-regexp/syntax
-html
-crypto/sha256
-crypto/aes
+crypto/internal/boring
 crypto/hmac
 crypto/sha512
 crypto/sha1
+crypto/sha256
+crypto/aes
 vendor/golang.org/x/crypto/hkdf
-internal/syscall/unix
+regexp
 internal/syscall/execenv
 time
-regexp
+internal/syscall/unix
 github.com/alessio/shellescape
 context
 io/fs
 internal/poll
-internal/fmtsort
-encoding/binary
 internal/filepathlite
 embed
+internal/fmtsort
+encoding/binary
 crypto/internal/nistec
+os
 github.com/cespare/xxhash
 github.com/klauspost/compress/internal/snapref
+vendor/golang.org/x/crypto/internal/poly1305
 vendor/golang.org/x/crypto/chacha20
 encoding/base64
-vendor/golang.org/x/crypto/internal/poly1305
-os
 golang.org/x/sys/unix
 encoding/pem
 crypto/ecdh
-fmt
 io/ioutil
 path/filepath
 vendor/golang.org/x/sys/cpu
+fmt
 net
 vendor/golang.org/x/crypto/sha3
 vendor/golang.org/x/crypto/chacha20poly1305
 os/exec
-github.com/surma/gocpio
+net/url
 encoding/hex
+github.com/surma/gocpio
+github.com/docker/go-units
+database/sql/driver
+runtime/debug
 log
-github.com/klauspost/compress/fse
-net/url
 compress/flate
-text/template/parse
-runtime/debug
-net/http/internal
-mime/quotedprintable
-github.com/docker/go-units
-vendor/golang.org/x/net/http2/hpack
+encoding/json
 github.com/ulikunitz/xz/internal/xlog
 mime
-encoding/json
-vendor/golang.org/x/text/unicode/norm
-database/sql/driver
-math/big
+mime/quotedprintable
+vendor/golang.org/x/net/http2/hpack
+net/http/internal
+github.com/klauspost/compress/fse
+github.com/jessevdk/go-flags
 github.com/sjoerdsimons/ostree-go/pkg/glibobject
+text/template/parse
+vendor/golang.org/x/text/unicode/norm
 gopkg.in/yaml.v2
+math/big
 github.com/go-debos/fakemachine/cpio
-github.com/jessevdk/go-flags
+github.com/ulikunitz/xz/lzma
 vendor/golang.org/x/text/unicode/bidi
 github.com/klauspost/compress/huff0
 compress/gzip
-github.com/ulikunitz/xz/lzma
-gopkg.in/freddierice/go-losetup.v1
-text/template
 vendor/golang.org/x/text/secure/bidirule
-github.com/ulikunitz/xz
+text/template
 vendor/golang.org/x/net/idna
+gopkg.in/freddierice/go-losetup.v1
+github.com/ulikunitz/xz
 crypto/rand
 crypto/internal/boring/bbig
+crypto/dsa
 crypto/elliptic
 crypto/internal/bigmod
-crypto/dsa
 encoding/asn1
-html/template
-crypto/ed25519
 crypto/internal/hpke
+crypto/ed25519
 crypto/internal/mlkem768
 github.com/klauspost/compress/zstd
 crypto/rsa
-vendor/golang.org/x/crypto/cryptobyte
+html/template
 crypto/x509/pkix
+vendor/golang.org/x/crypto/cryptobyte
 crypto/ecdsa
 github.com/go-debos/fakemachine
-crypto/x509
-net/textproto
 vendor/golang.org/x/net/http/httpproxy
+net/textproto
 github.com/go-task/slim-sprig
 github.com/google/uuid
+crypto/x509
 vendor/golang.org/x/net/http/httpguts
 mime/multipart
 crypto/tls
@@ -1163,8 +1199,8 @@
 dpkg-gencontrol: warning: package debos: substitution variable ${misc:Static-Built-Using} unused, but is defined
    dh_md5sums -O--buildsystem=golang
    dh_builddeb -O--buildsystem=golang
-dpkg-deb: building package 'debos' in '../debos_1.1.4-1.1_amd64.deb'.
 dpkg-deb: building package 'debos-dbgsym' in '../debos-dbgsym_1.1.4-1.1_amd64.deb'.
+dpkg-deb: building package 'debos' in '../debos_1.1.4-1.1_amd64.deb'.
  dpkg-genbuildinfo --build=binary -O../debos_1.1.4-1.1_amd64.buildinfo
  dpkg-genchanges --build=binary -O../debos_1.1.4-1.1_amd64.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -1172,12 +1208,14 @@
 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/3570043/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/3570043/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/3149621 and its subdirectories
-I: Current time: Sun Dec 15 18:27:26 -12 2024
-I: pbuilder-time-stamp: 1734330446
+I: removing directory /srv/workspace/pbuilder/3570043 and its subdirectories
+I: Current time: Mon Jan 19 02:52:09 +14 2026
+I: pbuilder-time-stamp: 1768740729