Diff of the two buildlogs:

--
--- b1/build.log	2024-09-08 12:20:45.180666686 +0000
+++ b2/build.log	2024-09-08 12:22:10.405053539 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Sep  8 00:19:35 -12 2024
-I: pbuilder-time-stamp: 1725797975
+I: Current time: Mon Sep  9 02:20:54 +14 2024
+I: pbuilder-time-stamp: 1725798054
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -27,52 +27,84 @@
 dpkg-source: info: applying 0001-remove-screenshot.diff
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/14399/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/28799/tmp/hooks/D01_modify_environment starting
+debug: Running on virt64a.
+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  8 12:21 /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/28799/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/28799/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='armhf'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=3 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='armhf'
+  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]="arm-unknown-linux-gnueabihf")
+  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=armhf
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=4 '
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=arm
+  HOST_ARCH=armhf
   IFS=' 	
   '
-  INVOCATION_ID='373c81c89e9b4dad8b794e3b273972ff'
-  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='14399'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=bc05d762154a4772b1e3fdd03c84a6c2
+  LANG=C
+  LANGUAGE=it_CH:it
+  LC_ALL=C
+  MACHTYPE=arm-unknown-linux-gnueabihf
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnueabihf
+  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=28799
   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.ecixC6E3/pbuilderrc_lPKQ --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.ecixC6E3/b1 --logfile b1/build.log elfeed_3.4.2-3.dsc'
-  SUDO_GID='110'
-  SUDO_UID='103'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://10.0.0.15:3142/'
+  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.ecixC6E3/pbuilderrc_g6Ye --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.ecixC6E3/b2 --logfile b2/build.log elfeed_3.4.2-3.dsc'
+  SUDO_GID=114
+  SUDO_UID=108
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://10.0.0.15:3142/
 I: uname -a
-  Linux virt32z 6.1.0-25-armmp-lpae #1 SMP Debian 6.1.106-3 (2024-08-26) armv7l GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-25-arm64 #1 SMP Debian 6.1.106-3 (2024-08-26) aarch64 GNU/Linux
 I: ls -l /bin
   lrwxrwxrwx 1 root root 7 Aug  4 21:30 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/14399/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/28799/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -200,7 +232,7 @@
 Get: 88 http://deb.debian.org/debian unstable/main armhf libtext-glob-perl all 0.11-3 [7676 B]
 Get: 89 http://deb.debian.org/debian unstable/main armhf libfile-find-rule-perl all 0.34-3 [26.6 kB]
 Get: 90 http://deb.debian.org/debian unstable/main armhf dh-elpa all 2.1.5 [29.7 kB]
-Fetched 72.1 MB in 1s (56.0 MB/s)
+Fetched 72.1 MB in 1s (52.9 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package install-info.
 (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 ... 19491 files and directories currently installed.)
@@ -592,7 +624,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/elfeed-3.4.2/ && 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  > ../elfeed_3.4.2-3_source.changes
+I: user script /srv/workspace/pbuilder/28799/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/28799/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/elfeed-3.4.2/ && 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  > ../elfeed_3.4.2-3_source.changes
 dpkg-buildpackage: info: source package elfeed
 dpkg-buildpackage: info: source version 3.4.2-3
 dpkg-buildpackage: info: source distribution unstable
@@ -602,7 +638,7 @@
  debian/rules clean
 dh clean --with elpa
    dh_auto_clean
-	make -j3 clean
+	make -j4 clean
 make[1]: Entering directory '/build/reproducible-path/elfeed-3.4.2'
 rm -f *.tar elfeed-csv.elc elfeed-curl.elc elfeed-db.elc elfeed-lib.elc elfeed-log.elc elfeed-show.elc elfeed.elc xml-query.elc elfeed-search.elc elfeed-link.elc tests/elfeed-db-tests.elc tests/elfeed-lib-tests.elc tests/elfeed-tests.elc tests/elfeed-search-tests.elc tests/elfeed-curl-tests.elc tests/xml-query-tests.elc
 make[1]: Leaving directory '/build/reproducible-path/elfeed-3.4.2'
@@ -637,48 +673,48 @@
 emacs -batch -Q -L . -L tests -f batch-byte-compile tests/elfeed-curl-tests.el
 emacs -batch -Q -L . -L tests -f batch-byte-compile tests/elfeed-tests.el
 emacs -batch -Q -L . -L tests -l tests/elfeed-tests.elc -f ert-run-tests-batch
-Running 39 tests (2024-09-08 12:20:31+0000, selector `t')
-   passed   1/39  elfeed-autotags (0.003434 sec)
-   passed   2/39  elfeed-clamp (0.000125 sec)
-   passed   3/39  elfeed-cleanup (0.000161 sec)
-   passed   4/39  elfeed-curl--protocol-type (0.000300 sec)
-   passed   5/39  elfeed-db-dates (0.074357 sec)
-   passed   6/39  elfeed-db-feed-entries (0.006239 sec)
-   passed   7/39  elfeed-db-merge (0.001085 sec)
-   passed   8/39  elfeed-db-meta (0.000957 sec)
-   passed   9/39  elfeed-db-size (0.038978 sec)
-   passed  10/39  elfeed-db-tag (0.001261 sec)
-   passed  11/39  elfeed-db-visit (0.023975 sec)
-   passed  12/39  elfeed-directory-empty-p (0.002665 sec)
-   passed  13/39  elfeed-entries-from-x (0.017675 sec)
-   passed  14/39  elfeed-feed-type (0.003562 sec)
-   passed  15/39  elfeed-float-time (0.002852 sec)
-   passed  16/39  elfeed-format-column (0.000148 sec)
-   passed  17/39  elfeed-goto-line (0.000144 sec)
-   passed  18/39  elfeed-keyword->symbol (0.000097 sec)
-   passed  19/39  elfeed-kill-line (0.000132 sec)
-   passed  20/39  elfeed-looks-like-url-p (0.000289 sec)
-   passed  21/39  elfeed-move-to-first-empty-line (0.000146 sec)
-   passed  22/39  elfeed-opml (0.025221 sec)
-   passed  23/39  elfeed-parse-filter-time-durations (0.510850 sec)
-   passed  24/39  elfeed-protocol-relative-url (0.006381 sec)
-   passed  25/39  elfeed-readable-p (0.000255 sec)
-   passed  26/39  elfeed-ref (0.037652 sec)
-   passed  27/39  elfeed-ref-pack (0.124561 sec)
-   passed  28/39  elfeed-resize-vector (0.000121 sec)
-   passed  29/39  elfeed-search-compile-filter (0.420149 sec)
-   passed  30/39  elfeed-search-unparse-filter (0.000142 sec)
-   passed  31/39  elfeed-slurp-spit (0.001618 sec)
-   passed  32/39  elfeed-tagger (0.001255 sec)
-   passed  33/39  elfeed-time-duration (0.000292 sec)
-   passed  34/39  elfeed-time-duration-absolute (0.000529 sec)
-   passed  35/39  elfeed-update-location (0.001073 sec)
-   passed  36/39  elfeed-valid-regexp-p (0.000122 sec)
-   passed  37/39  elfeed-xml-base (0.002868 sec)
-   passed  38/39  elfeed-xml-parse-region (0.037091 sec)
-   passed  39/39  xml-query (0.000524 sec)
+Running 39 tests (2024-09-08 12:21:55+0000, selector `t')
+   passed   1/39  elfeed-autotags (0.004418 sec)
+   passed   2/39  elfeed-clamp (0.000172 sec)
+   passed   3/39  elfeed-cleanup (0.000190 sec)
+   passed   4/39  elfeed-curl--protocol-type (0.000421 sec)
+   passed   5/39  elfeed-db-dates (0.102305 sec)
+   passed   6/39  elfeed-db-feed-entries (0.008241 sec)
+   passed   7/39  elfeed-db-merge (0.001393 sec)
+   passed   8/39  elfeed-db-meta (0.001273 sec)
+   passed   9/39  elfeed-db-size (0.053609 sec)
+   passed  10/39  elfeed-db-tag (0.001567 sec)
+   passed  11/39  elfeed-db-visit (0.032623 sec)
+   passed  12/39  elfeed-directory-empty-p (0.003276 sec)
+   passed  13/39  elfeed-entries-from-x (0.019870 sec)
+   passed  14/39  elfeed-feed-type (0.004431 sec)
+   passed  15/39  elfeed-float-time (0.003297 sec)
+   passed  16/39  elfeed-format-column (0.000201 sec)
+   passed  17/39  elfeed-goto-line (0.000199 sec)
+   passed  18/39  elfeed-keyword->symbol (0.000138 sec)
+   passed  19/39  elfeed-kill-line (0.000207 sec)
+   passed  20/39  elfeed-looks-like-url-p (0.000370 sec)
+   passed  21/39  elfeed-move-to-first-empty-line (0.000199 sec)
+   passed  22/39  elfeed-opml (0.026611 sec)
+   passed  23/39  elfeed-parse-filter-time-durations (0.536777 sec)
+   passed  24/39  elfeed-protocol-relative-url (0.008083 sec)
+   passed  25/39  elfeed-readable-p (0.000371 sec)
+   passed  26/39  elfeed-ref (0.046509 sec)
+   passed  27/39  elfeed-ref-pack (0.149476 sec)
+   passed  28/39  elfeed-resize-vector (0.000165 sec)
+   passed  29/39  elfeed-search-compile-filter (0.471960 sec)
+   passed  30/39  elfeed-search-unparse-filter (0.000197 sec)
+   passed  31/39  elfeed-slurp-spit (0.002075 sec)
+   passed  32/39  elfeed-tagger (0.001625 sec)
+   passed  33/39  elfeed-time-duration (0.000407 sec)
+   passed  34/39  elfeed-time-duration-absolute (0.000682 sec)
+   passed  35/39  elfeed-update-location (0.001537 sec)
+   passed  36/39  elfeed-valid-regexp-p (0.000177 sec)
+   passed  37/39  elfeed-xml-base (0.003627 sec)
+   passed  38/39  elfeed-xml-parse-region (0.036331 sec)
+   passed  39/39  xml-query (0.000709 sec)
 
-Ran 39 tests, 39 results as expected, 0 unexpected (2024-09-08 12:20:33+0000, 1.358096 sec)
+Ran 39 tests, 39 results as expected, 0 unexpected (2024-09-08 12:21:57+0000, 1.533045 sec)
 
 make[2]: Leaving directory '/build/reproducible-path/elfeed-3.4.2'
 make[1]: Leaving directory '/build/reproducible-path/elfeed-3.4.2'
@@ -711,12 +747,14 @@
 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/28799/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/28799/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/14399 and its subdirectories
-I: Current time: Sun Sep  8 00:20:41 -12 2024
-I: pbuilder-time-stamp: 1725798041
+I: removing directory /srv/workspace/pbuilder/28799 and its subdirectories
+I: Current time: Mon Sep  9 02:22:06 +14 2024
+I: pbuilder-time-stamp: 1725798126