Diff of the two buildlogs:

--
--- b1/build.log	2025-03-18 10:16:40.252421015 +0000
+++ b2/build.log	2025-03-18 10:20:16.762652536 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Mar 17 22:11:35 -12 2025
-I: pbuilder-time-stamp: 1742292695
+I: Current time: Wed Mar 19 00:16:48 +14 2025
+I: pbuilder-time-stamp: 1742293008
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -22,52 +22,84 @@
 dpkg-source: info: unpacking metrics-clojure_2.9.0-3.debian.tar.xz
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/26586/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/1154/tmp/hooks/D01_modify_environment starting
+debug: Running on virt64b.
+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 Mar 18 10:17 /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/1154/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/1154/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]="37" [3]="1" [4]="release" [5]="arm-unknown-linux-gnueabihf")
+  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=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='620d18710bd649ae8246ece02b45167d'
-  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='26586'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=dbb7755aeb114aec90bd4c2b6c88d586
+  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=1154
   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.c6HQg9lF/pbuilderrc_14bX --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.c6HQg9lF/b1 --logfile b1/build.log metrics-clojure_2.9.0-3.dsc'
-  SUDO_GID='113'
-  SUDO_UID='107'
-  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.c6HQg9lF/pbuilderrc_7gEk --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.c6HQg9lF/b2 --logfile b2/build.log metrics-clojure_2.9.0-3.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 ff4a 6.1.0-32-armmp-lpae #1 SMP Debian 6.1.129-1 (2025-03-06) armv7l GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-32-arm64 #1 SMP Debian 6.1.129-1 (2025-03-06) aarch64 GNU/Linux
 I: ls -l /bin
   lrwxrwxrwx 1 root root 7 Mar  4 11:20 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/26586/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/1154/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -273,7 +305,7 @@
 Get: 149 http://deb.debian.org/debian unstable/main armhf libslf4j-java all 1.7.32-1 [144 kB]
 Get: 150 http://deb.debian.org/debian unstable/main armhf libtext-markdown-perl all 1.000031-5 [31.4 kB]
 Get: 151 http://deb.debian.org/debian unstable/main armhf maven-repo-helper all 1.11 [142 kB]
-Fetched 160 MB in 11s (14.0 MB/s)
+Fetched 160 MB in 3s (50.6 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpipeline1:armhf.
 (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 ... 19509 files and directories currently installed.)
@@ -775,8 +807,8 @@
 Setting up tzdata (2025a-2) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Tue Mar 18 10:13:59 UTC 2025.
-Universal Time is now:  Tue Mar 18 10:13:59 UTC 2025.
+Local time is now:      Tue Mar 18 10:17:58 UTC 2025.
+Universal Time is now:  Tue Mar 18 10:17:58 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up libdropwizard-metrics-java (3.2.6-1) ...
@@ -1108,7 +1140,11 @@
 fakeroot is already the newest version (1.37.1-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/metrics-clojure-2.9.0/ && 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  > ../metrics-clojure_2.9.0-3_source.changes
+I: user script /srv/workspace/pbuilder/1154/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/1154/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/metrics-clojure-2.9.0/ && 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  > ../metrics-clojure_2.9.0-3_source.changes
 dpkg-buildpackage: info: source package metrics-clojure
 dpkg-buildpackage: info: source version 2.9.0-3
 dpkg-buildpackage: info: source distribution unstable
@@ -1121,7 +1157,7 @@
 make[1]: Entering directory '/build/reproducible-path/metrics-clojure-2.9.0'
 jh_clean
 Duplicate specification "u=s" for option "u"
-Duplicate specification "u=s" for option "u"
+Duplicate specification "unlink|u" for option "u"
 rm -f /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure*.jar
 rm -rf /build/reproducible-path/metrics-clojure-2.9.0/doc/html
 make[1]: Leaving directory '/build/reproducible-path/metrics-clojure-2.9.0'
@@ -1150,20 +1186,20 @@
 (cd metrics-clojure-core/test && find . -name '*.clj' | \
 	xargs -n 1 --verbose clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/slf4j-api.jar:.)
 clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/slf4j-api.jar:. ./metrics/test/gauges_test.clj
-clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/slf4j-api.jar:. ./metrics/test/utils_test.clj
-clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/slf4j-api.jar:. ./metrics/test/core_test.clj
 clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/slf4j-api.jar:. ./metrics/test/meters_test.clj
 WARNING: abs already refers to: #'clojure.core/abs in namespace: metrics.test.test-utils, being replaced by: #'metrics.test.test-utils/abs
 WARNING: abs already refers to: #'clojure.core/abs in namespace: metrics.test.meters-test, being replaced by: #'metrics.test.test-utils/abs
-clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/slf4j-api.jar:. ./metrics/test/timers_test.clj
-WARNING: abs already refers to: #'clojure.core/abs in namespace: metrics.test.test-utils, being replaced by: #'metrics.test.test-utils/abs
-WARNING: abs already refers to: #'clojure.core/abs in namespace: metrics.test.timers-test, being replaced by: #'metrics.test.test-utils/abs
-clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/slf4j-api.jar:. ./metrics/test/counters_test.clj
+clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/slf4j-api.jar:. ./metrics/test/utils_test.clj
 clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/slf4j-api.jar:. ./metrics/test/test_utils.clj
 WARNING: abs already refers to: #'clojure.core/abs in namespace: metrics.test.test-utils, being replaced by: #'metrics.test.test-utils/abs
 clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/slf4j-api.jar:. ./metrics/test/histograms_test.clj
 WARNING: abs already refers to: #'clojure.core/abs in namespace: metrics.test.test-utils, being replaced by: #'metrics.test.test-utils/abs
 WARNING: abs already refers to: #'clojure.core/abs in namespace: metrics.test.histograms-test, being replaced by: #'metrics.test.test-utils/abs
+clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/slf4j-api.jar:. ./metrics/test/timers_test.clj
+WARNING: abs already refers to: #'clojure.core/abs in namespace: metrics.test.test-utils, being replaced by: #'metrics.test.test-utils/abs
+WARNING: abs already refers to: #'clojure.core/abs in namespace: metrics.test.timers-test, being replaced by: #'metrics.test.test-utils/abs
+clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/slf4j-api.jar:. ./metrics/test/counters_test.clj
+clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/slf4j-api.jar:. ./metrics/test/core_test.clj
 clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/slf4j-api.jar:. ./metrics/reporters/test/console_test.clj
 SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
 SLF4J: Defaulting to no-operation (NOP) logger implementation
@@ -1174,8 +1210,8 @@
 SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
 (cd metrics-clojure-ring/test && find . -name '*.clj' | \
 	xargs -n 1 --verbose clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure-ring.jar:/build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/cheshire.jar:/usr/share/java/ring-core.jar:.)
-clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure-ring.jar:/build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/cheshire.jar:/usr/share/java/ring-core.jar:. ./metrics/test/expose_test.clj
 clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure-ring.jar:/build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/cheshire.jar:/usr/share/java/ring-core.jar:. ./metrics/test/instrument_test.clj
+clojure -cp /build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure-ring.jar:/build/reproducible-path/metrics-clojure-2.9.0/metrics-clojure.jar:/usr/share/java/metrics-core.jar:/usr/share/java/cheshire.jar:/usr/share/java/ring-core.jar:. ./metrics/test/expose_test.clj
 make[1]: Leaving directory '/build/reproducible-path/metrics-clojure-2.9.0'
    create-stamp debian/debhelper-build-stamp
    dh_prep
@@ -1190,11 +1226,11 @@
    dh_link
    jh_installlibs
    jh_classpath
-Duplicate specification "version|V" for option "V"
 Duplicate specification "V:s" for option "V"
 Duplicate specification "version|V" for option "V"
 Duplicate specification "V:s" for option "V"
-Duplicate specification "V:s" for option "V"
+Duplicate specification "version|V" for option "V"
+Duplicate specification "version|V" for option "V"
    jh_manifest
    jh_depends
    mh_installpoms
@@ -1215,12 +1251,14 @@
 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/1154/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/1154/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/26586 and its subdirectories
-I: Current time: Mon Mar 17 22:16:36 -12 2025
-I: pbuilder-time-stamp: 1742292996
+I: removing directory /srv/workspace/pbuilder/1154 and its subdirectories
+I: Current time: Wed Mar 19 00:20:12 +14 2025
+I: pbuilder-time-stamp: 1742293212