Diff of the two buildlogs:

--
--- b1/build.log	2024-10-26 01:03:30.140428320 +0000
+++ b2/build.log	2024-10-26 01:04:37.462030253 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu Nov 27 19:25:45 -12 2025
-I: pbuilder-time-stamp: 1764314745
+I: Current time: Sat Oct 26 15:03:32 +14 2024
+I: pbuilder-time-stamp: 1729904612
 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 emacs-websocket_1.15-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/6799/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/29445/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos2-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 Oct 26 01:03 /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/29445/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/29445/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=22 '
-  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=10 '
+  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='522d47c6241a40bab24ec8cb1b802a45'
-  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='6799'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=1e6f738ae37c4e04b35f031edd78247e
+  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=29445
   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.8QBPeBgh/pbuilderrc_L4DU --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.8QBPeBgh/b1 --logfile b1/build.log emacs-websocket_1.15-2.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://213.165.73.152:3128'
+  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.8QBPeBgh/pbuilderrc_JRWK --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.8QBPeBgh/b2 --logfile b2/build.log emacs-websocket_1.15-2.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://46.16.76.132:3128
 I: uname -a
-  Linux ionos16-i386 6.1.0-26-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.112-1 (2024-09-30) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-26-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.112-1 (2024-09-30) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Aug  4  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/6799/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Aug  4 21:30 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/29445/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -225,7 +257,7 @@
 Get: 110 http://deb.debian.org/debian unstable/main i386 libfile-find-rule-perl all 0.34-3 [26.6 kB]
 Get: 111 http://deb.debian.org/debian unstable/main i386 dh-elpa all 2.1.5 [29.7 kB]
 Get: 112 http://deb.debian.org/debian unstable/main i386 python3-tornado i386 6.4.1-3 [349 kB]
-Fetched 84.8 MB in 1s (90.9 MB/s)
+Fetched 84.8 MB in 1s (58.7 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libpython3.12-minimal:i386.
 (Reading database ... 
(Reading database ... 5%
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(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19933 files and directories currently installed.)
@@ -613,8 +645,8 @@
 Setting up tzdata (2024b-3) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Fri Nov 28 07:26:11 UTC 2025.
-Universal Time is now:  Fri Nov 28 07:26:11 UTC 2025.
+Local time is now:      Sat Oct 26 01:04:11 UTC 2024.
+Universal Time is now:  Sat Oct 26 01:04:11 UTC 2024.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up liberror-perl (0.17029-2) ...
@@ -719,7 +751,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/emacs-websocket-1.15/ && 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  > ../emacs-websocket_1.15-2_source.changes
+I: user script /srv/workspace/pbuilder/29445/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/29445/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/emacs-websocket-1.15/ && 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  > ../emacs-websocket_1.15-2_source.changes
 dpkg-buildpackage: info: source package emacs-websocket
 dpkg-buildpackage: info: source version 1.15-2
 dpkg-buildpackage: info: source distribution unstable
@@ -734,55 +770,55 @@
    dh_update_autotools_config
    dh_autoreconf
    dh_elpa_test
-	emacs -batch -Q -l package --eval "(add-to-list 'package-directory-list \"/usr/share/emacs/site-lisp/elpa\")" --eval "(add-to-list 'package-directory-list \"/usr/share/emacs/site-lisp/elpa-src\")" --eval "(setq ert-batch-backtrace-right-margin nil)" -f package-initialize -L . --eval "(setq ert-batch-backtrace-right-margin 500)" -l websocket-test.el -l websocket-functional-test.el --eval \(ert-run-tests-batch-and-exit\)
+	emacs -batch -Q -l package --eval "(add-to-list 'package-directory-list \"/usr/share/emacs/site-lisp/elpa\")" --eval "(add-to-list 'package-directory-list \"/usr/share/emacs/site-lisp/elpa-src\")" --eval "(setq ert-batch-backtrace-right-margin nil)" -f package-initialize -L . --eval "(setq ert-batch-backtrace-right-margin 500)" -l websocket-functional-test.el -l websocket-test.el --eval \(ert-run-tests-batch-and-exit\)
+Package tls is deprecated
 Package cl is deprecated
 websocket-test.el: Warning: `loop' is an obsolete alias (as of 27.1); use `cl-loop' instead.
-Package tls is deprecated
-Running 32 tests (2025-11-27 19:26:18-1200, selector `t')
-   passed   1/32  websocket-calculate-accept (0.000121 sec)
-   passed   2/32  websocket-check (0.000129 sec)
-   passed   3/32  websocket-client-with-local-server (3.017463 sec)
-   passed   4/32  websocket-close (0.541314 sec)
-   passed   5/32  websocket-complete-server-response-test (0.000240 sec)
-   passed   6/32  websocket-create-headers (0.003517 sec)
+Running 32 tests (2024-10-26 15:04:24+1400, selector `t')
+   passed   1/32  websocket-calculate-accept (0.000122 sec)
+   passed   2/32  websocket-check (0.000153 sec)
+   passed   3/32  websocket-client-with-local-server (3.019231 sec)
+   passed   4/32  websocket-close (0.649516 sec)
+   passed   5/32  websocket-complete-server-response-test (0.000262 sec)
+   passed   6/32  websocket-create-headers (0.006264 sec)
 Error (websocket): in callback `on-message': End of buffer
 Error (websocket): in callback `on-close': Wrong number of arguments: 1, 2
-   passed   7/32  websocket-default-error-handler (0.000231 sec)
-   passed   8/32  websocket-encode-frame (0.156554 sec)
-   passed   9/32  websocket-frame-correctly-encoded (0.000873 sec)
-   passed  10/32  websocket-genbytes-length (0.001129 sec)
-   passed  11/32  websocket-get-bytes (0.000154 sec)
-   passed  12/32  websocket-get-opcode (0.000069 sec)
-   passed  13/32  websocket-get-payload-len (0.000127 sec)
-   passed  14/32  websocket-get-server-response (0.000279 sec)
-   passed  15/32  websocket-intersect (0.000090 sec)
-   passed  16/32  websocket-mask-is-unibyte (0.000083 sec)
-   passed  17/32  websocket-outer-filter (0.000291 sec)
-   passed  18/32  websocket-outer-filter-bad-connection (0.000097 sec)
-   passed  19/32  websocket-outer-filter-fragmented-header (0.000161 sec)
-   passed  20/32  websocket-process-frame (0.000204 sec)
+   passed   7/32  websocket-default-error-handler (0.000275 sec)
+   passed   8/32  websocket-encode-frame (0.304976 sec)
+   passed   9/32  websocket-frame-correctly-encoded (0.001601 sec)
+   passed  10/32  websocket-genbytes-length (0.002060 sec)
+   passed  11/32  websocket-get-bytes (0.000181 sec)
+   passed  12/32  websocket-get-opcode (0.000072 sec)
+   passed  13/32  websocket-get-payload-len (0.000128 sec)
+   passed  14/32  websocket-get-server-response (0.000347 sec)
+   passed  15/32  websocket-intersect (0.000096 sec)
+   passed  16/32  websocket-mask-is-unibyte (0.000085 sec)
+   passed  17/32  websocket-outer-filter (0.000399 sec)
+   passed  18/32  websocket-outer-filter-bad-connection (0.000091 sec)
+   passed  19/32  websocket-outer-filter-fragmented-header (0.000182 sec)
+   passed  20/32  websocket-process-frame (0.000244 sec)
 In on-message
-   passed  21/32  websocket-process-frame-error-handling (0.000114 sec)
+   passed  21/32  websocket-process-frame-error-handling (0.000143 sec)
    passed  22/32  websocket-process-headers (0.000067 sec)
-   passed  23/32  websocket-read-frame (0.000307 sec)
-   passed  24/32  websocket-send (0.179837 sec)
-   passed  25/32  websocket-send-text (0.000097 sec)
-   passed  26/32  websocket-server (2.012963 sec)
-   passed  27/32  websocket-server-close (0.000165 sec)
+   passed  23/32  websocket-read-frame (0.000441 sec)
+   passed  24/32  websocket-send (0.339345 sec)
+   passed  25/32  websocket-send-text (0.000105 sec)
+   passed  26/32  websocket-server (2.014292 sec)
+   passed  27/32  websocket-server-close (0.000178 sec)
 Invalid client headers found in: 
 
-   passed  28/32  websocket-server-filter (0.000252 sec)
-   passed  29/32  websocket-to-bytes (0.045748 sec)
+   passed  28/32  websocket-server-filter (0.000293 sec)
+   passed  29/32  websocket-to-bytes (0.067582 sec)
 Websocket client connection: Host header not found
 Websocket client connection: Upgrade: websocket not found
 Websocket client connect: No key sent
 Websocket client connect: No key sent
 Websocket client connection: HTTP/1.1 not found
-   passed  30/32  websocket-verify-client-headers (0.000386 sec)
-   passed  31/32  websocket-verify-headers (0.000436 sec)
-   passed  32/32  websocket-verify-response-code (0.000133 sec)
+   passed  30/32  websocket-verify-client-headers (0.000513 sec)
+   passed  31/32  websocket-verify-headers (0.000488 sec)
+   passed  32/32  websocket-verify-response-code (0.000134 sec)
 
-Ran 32 tests, 32 results as expected, 0 unexpected (2025-11-27 19:26:24-1200, 5.966077 sec)
+Ran 32 tests, 32 results as expected, 0 unexpected (2024-10-26 15:04:31+1400, 6.413888 sec)
 
    create-stamp debian/debhelper-build-stamp
    dh_prep
@@ -809,12 +845,14 @@
 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/29445/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/29445/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/6799 and its subdirectories
-I: Current time: Thu Nov 27 19:26:27 -12 2025
-I: pbuilder-time-stamp: 1764314787
+I: removing directory /srv/workspace/pbuilder/29445 and its subdirectories
+I: Current time: Sat Oct 26 15:04:36 +14 2024
+I: pbuilder-time-stamp: 1729904676