Diff of the two buildlogs:

--
--- b1/build.log	2024-07-28 19:32:55.647810086 +0000
+++ b2/build.log	2024-07-28 19:36:14.815355744 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Jul 28 07:31:42 -12 2024
-I: pbuilder-time-stamp: 1722195102
+I: Current time: Mon Jul 29 09:33:07 +14 2024
+I: pbuilder-time-stamp: 1722195187
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -28,52 +28,84 @@
 dpkg-source: info: applying drop-duplicated-test.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/29011/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/21764/tmp/hooks/D01_modify_environment starting
+debug: Running on cbxi4pro0.
+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 Jul 28 19:33 /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/21764/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/21764/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]="21" [3]="1" [4]="release" [5]="arm-unknown-linux-gnueabihf")
+  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=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='e3f4b9f47d3f43f0a91ccefecdc62ccb'
-  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='29011'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=f7407a3cf19d42dca7270b45e34f60b5
+  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=21764
   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.HzR23AYW/pbuilderrc_5xOB --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.HzR23AYW/b1 --logfile b1/build.log go-mode.el_1.6.0+git20230823.8dce1e3-2.dsc'
-  SUDO_GID='114'
-  SUDO_UID='108'
-  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.HzR23AYW/pbuilderrc_Ju8x --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.HzR23AYW/b2 --logfile b2/build.log go-mode.el_1.6.0+git20230823.8dce1e3-2.dsc'
+  SUDO_GID=113
+  SUDO_UID=107
+  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 virt64a 6.1.0-23-arm64 #1 SMP Debian 6.1.99-1 (2024-07-15) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-23-armmp #1 SMP Debian 6.1.99-1 (2024-07-15) armv7l GNU/Linux
 I: ls -l /bin
   lrwxrwxrwx 1 root root 7 Jun  5 22:35 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/29011/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/21764/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -201,7 +233,7 @@
 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 71.9 MB in 1s (51.7 MB/s)
+Fetched 71.9 MB in 5s (15.7 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 ... 19508 files and directories currently installed.)
@@ -593,7 +625,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/go-mode.el-1.6.0+git20230823.8dce1e3/ && 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  > ../go-mode.el_1.6.0+git20230823.8dce1e3-2_source.changes
+I: user script /srv/workspace/pbuilder/21764/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/21764/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/go-mode.el-1.6.0+git20230823.8dce1e3/ && 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  > ../go-mode.el_1.6.0+git20230823.8dce1e3-2_source.changes
 dpkg-buildpackage: info: source package go-mode.el
 dpkg-buildpackage: info: source version 3:1.6.0+git20230823.8dce1e3-2
 dpkg-buildpackage: info: source distribution unstable
@@ -608,40 +644,40 @@
    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 . -L test -l test/go-font-lock-test.el -l test/go-fill-paragraph-test.el -l test/go-comment-test.el -l test/go-indentation-test.el --eval \(ert-run-tests-batch-and-exit\)
-Running 30 tests (2024-07-28 19:32:42+0000, selector `t')
-   passed   1/30  go--comment-region (0.005745 sec)
-   passed   2/30  go--fill-paragraph-block (0.001056 sec)
-   passed   3/30  go--fill-paragraph-block-empty-first (0.001072 sec)
-   passed   4/30  go--fill-paragraph-block-empty-first-region (0.001013 sec)
-   passed   5/30  go--fill-paragraph-block-offset (0.001311 sec)
-   passed   6/30  go--fill-paragraph-block-region (0.000851 sec)
-   passed   7/30  go--fill-paragraph-bob (0.001651 sec)
-   passed   8/30  go--fill-paragraph-code-region (0.000808 sec)
-   passed   9/30  go--fill-paragraph-single (0.000921 sec)
-   passed  10/30  go--fill-paragraph-single-artful (0.000902 sec)
-   passed  11/30  go--fill-paragraph-single-artful-region (0.001055 sec)
-   passed  12/30  go--fill-paragraph-single-region (0.000845 sec)
-   passed  13/30  go--fontify-assign (0.057455 sec)
-   passed  14/30  go--fontify-composite-literal (0.011779 sec)
-   passed  15/30  go--fontify-const-decl (0.006264 sec)
-   passed  16/30  go--fontify-go-dot-mod (0.004418 sec)
-   passed  17/30  go--fontify-index-multiply (0.002752 sec)
-   passed  18/30  go--fontify-interface (0.007516 sec)
-   passed  19/30  go--fontify-labels (0.002575 sec)
-   passed  20/30  go--fontify-negation (0.004824 sec)
-   passed  21/30  go--fontify-signature (0.039045 sec)
-   passed  22/30  go--fontify-slices-arrays-maps (0.017247 sec)
-   passed  23/30  go--fontify-struct (0.005757 sec)
-   passed  24/30  go--fontify-type-decl (0.012509 sec)
-   passed  25/30  go--fontify-type-switch (0.011641 sec)
-   passed  26/30  go--fontify-var-decl (0.015885 sec)
-   passed  27/30  go--indent-line (0.838431 sec)
-   passed  28/30  go--indent-multiline-comment (0.004643 sec)
-   passed  29/30  go--indent-top-level (0.001579 sec)
-   passed  30/30  go-dot-mod--indent-line (0.005070 sec)
+	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 . -L test -l test/go-comment-test.el -l test/go-font-lock-test.el -l test/go-indentation-test.el -l test/go-fill-paragraph-test.el --eval \(ert-run-tests-batch-and-exit\)
+Running 30 tests (2024-07-28 19:35:43+0000, selector `t')
+   passed   1/30  go--comment-region (0.015739 sec)
+   passed   2/30  go--fill-paragraph-block (0.002743 sec)
+   passed   3/30  go--fill-paragraph-block-empty-first (0.003093 sec)
+   passed   4/30  go--fill-paragraph-block-empty-first-region (0.002899 sec)
+   passed   5/30  go--fill-paragraph-block-offset (0.003857 sec)
+   passed   6/30  go--fill-paragraph-block-region (0.002321 sec)
+   passed   7/30  go--fill-paragraph-bob (0.004343 sec)
+   passed   8/30  go--fill-paragraph-code-region (0.002309 sec)
+   passed   9/30  go--fill-paragraph-single (0.002360 sec)
+   passed  10/30  go--fill-paragraph-single-artful (0.002326 sec)
+   passed  11/30  go--fill-paragraph-single-artful-region (0.002995 sec)
+   passed  12/30  go--fill-paragraph-single-region (0.002288 sec)
+   passed  13/30  go--fontify-assign (0.147712 sec)
+   passed  14/30  go--fontify-composite-literal (0.032249 sec)
+   passed  15/30  go--fontify-const-decl (0.017883 sec)
+   passed  16/30  go--fontify-go-dot-mod (0.013043 sec)
+   passed  17/30  go--fontify-index-multiply (0.007424 sec)
+   passed  18/30  go--fontify-interface (0.021102 sec)
+   passed  19/30  go--fontify-labels (0.007246 sec)
+   passed  20/30  go--fontify-negation (0.012708 sec)
+   passed  21/30  go--fontify-signature (0.109931 sec)
+   passed  22/30  go--fontify-slices-arrays-maps (0.046288 sec)
+   passed  23/30  go--fontify-struct (0.015415 sec)
+   passed  24/30  go--fontify-type-decl (0.033868 sec)
+   passed  25/30  go--fontify-type-switch (0.032681 sec)
+   passed  26/30  go--fontify-var-decl (0.044536 sec)
+   passed  27/30  go--indent-line (2.028870 sec)
+   passed  28/30  go--indent-multiline-comment (0.014208 sec)
+   passed  29/30  go--indent-top-level (0.004932 sec)
+   passed  30/30  go-dot-mod--indent-line (0.014875 sec)
 
-Ran 30 tests, 30 results as expected, 0 unexpected (2024-07-28 19:32:43+0000, 1.072843 sec)
+Ran 30 tests, 30 results as expected, 0 unexpected (2024-07-28 19:35:46+0000, 2.671862 sec)
 
    create-stamp debian/debhelper-build-stamp
    dh_prep
@@ -668,12 +704,14 @@
 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/21764/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/21764/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/29011 and its subdirectories
-I: Current time: Sun Jul 28 07:32:51 -12 2024
-I: pbuilder-time-stamp: 1722195171
+I: removing directory /srv/workspace/pbuilder/21764 and its subdirectories
+I: Current time: Mon Jul 29 09:36:10 +14 2024
+I: pbuilder-time-stamp: 1722195370