Diff of the two buildlogs:

--
--- b1/build.log	2024-12-27 11:45:01.951832566 +0000
+++ b2/build.log	2024-12-27 11:46:56.014655745 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu Dec 26 23:43:22 -12 2024
-I: pbuilder-time-stamp: 1735299802
+I: Current time: Sat Dec 28 01:45:10 +14 2024
+I: pbuilder-time-stamp: 1735299910
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -25,52 +25,84 @@
 dpkg-source: info: applying 0002-require-activerecord.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/5919/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/15221/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 Dec 27 11:45 /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/15221/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/15221/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='ac6599bd0e904ce89a692e0f27357218'
-  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='5919'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=1ce671c3087d4f61b61e5beae9c24f05
+  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=15221
   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.H7Epl4oK/pbuilderrc_8SBn --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.H7Epl4oK/b1 --logfile b1/build.log ruby-grape-entity_0.10.2-1.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.H7Epl4oK/pbuilderrc_EzpO --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.H7Epl4oK/b2 --logfile b2/build.log ruby-grape-entity_0.10.2-1.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 6.1.0-28-armmp-lpae #1 SMP Debian 6.1.119-1 (2024-11-22) armv7l GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-28-arm64 #1 SMP Debian 6.1.119-1 (2024-11-22) aarch64 GNU/Linux
 I: ls -l /bin
   lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/5919/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/15221/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -293,7 +325,7 @@
 Get: 171 http://deb.debian.org/debian unstable/main armhf ruby-rspec-expectations all 3.13.0c0e0m0s1-2 [90.2 kB]
 Get: 172 http://deb.debian.org/debian unstable/main armhf ruby-rspec-mocks all 3.13.0c0e0m0s1-2 [81.3 kB]
 Get: 173 http://deb.debian.org/debian unstable/main armhf ruby-rspec all 3.13.0c0e0m0s1-2 [5184 B]
-Fetched 47.7 MB in 4s (11.5 MB/s)
+Fetched 47.7 MB in 1s (50.6 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.12-minimal:armhf.
 (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
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(Reading database ... 55%
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(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19572 files and directories currently installed.)
@@ -867,8 +899,8 @@
 Setting up tzdata (2024b-4) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Fri Dec 27 11:44:21 UTC 2024.
-Universal Time is now:  Fri Dec 27 11:44:21 UTC 2024.
+Local time is now:      Fri Dec 27 11:46:10 UTC 2024.
+Universal Time is now:  Fri Dec 27 11:46:10 UTC 2024.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -1022,7 +1054,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/ruby-grape-entity-0.10.2/ && 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  > ../ruby-grape-entity_0.10.2-1_source.changes
+I: user script /srv/workspace/pbuilder/15221/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/15221/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/ruby-grape-entity-0.10.2/ && 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  > ../ruby-grape-entity_0.10.2-1_source.changes
 dpkg-buildpackage: info: source package ruby-grape-entity
 dpkg-buildpackage: info: source version 0.10.2-1
 dpkg-buildpackage: info: source distribution unstable
@@ -1411,43 +1447,43 @@
     without passing in a expected option hide the value
     passing in a expected option will expose the values
 
-Top 10 slowest examples (0.0353 seconds, 11.9% of total time):
+Top 10 slowest examples (0.05175 seconds, 13.4% of total time):
   Grape::Entity instance methods #inspect does not serialize delegator or options
-    0.00547 seconds ./spec/grape_entity/entity_spec.rb:1761
+    0.00789 seconds ./spec/grape_entity/entity_spec.rb:1761
   Grape::Entity except option for nested entity
-    0.00508 seconds ./spec/grape_entity/hash_spec.rb:6
+    0.00757 seconds ./spec/grape_entity/hash_spec.rb:6
   Grape::Entity::Exposure::RepresentExposure#setup sets using_class_name
-    0.00458 seconds ./spec/grape_entity/exposure/represent_exposure_spec.rb:14
+    0.00682 seconds ./spec/grape_entity/exposure/represent_exposure_spec.rb:14
   Grape::Entity class methods .expose with a block with no parameters passed to the block adds a nested exposure
-    0.00452 seconds ./spec/grape_entity/entity_spec.rb:450
+    0.00634 seconds ./spec/grape_entity/entity_spec.rb:450
   Grape::Entity instance methods #serializable_hash #attr_path for all kinds of attributes
-    0.00316 seconds ./spec/grape_entity/entity_spec.rb:1652
+    0.00471 seconds ./spec/grape_entity/entity_spec.rb:1652
   Grape::Entity class methods .expose option validation makes sure that :as only works on single attribute calls
-    0.00293 seconds ./spec/grape_entity/entity_spec.rb:26
-  Grape::Entity class methods .expose works global on Grape::Entity
-    0.00261 seconds ./spec/grape_entity/entity_spec.rb:741
+    0.00411 seconds ./spec/grape_entity/entity_spec.rb:26
   Grape::Entity instance methods #value_for instantiates a representation if that is called for
-    0.00246 seconds ./spec/grape_entity/entity_spec.rb:1793
+    0.00397 seconds ./spec/grape_entity/entity_spec.rb:1793
+  Grape::Entity class methods .expose works global on Grape::Entity
+    0.0037 seconds ./spec/grape_entity/entity_spec.rb:741
   Grape::Entity instance methods #value_for child representations passes through custom options
-    0.00241 seconds ./spec/grape_entity/entity_spec.rb:1901
-  Grape::Entity class methods .expose with a block references an instance of the entity with :using option
-    0.00207 seconds ./spec/grape_entity/entity_spec.rb:344
+    0.00368 seconds ./spec/grape_entity/entity_spec.rb:1901
+  Grape::Entity instance methods #value_for child representations passes through the proc which returns an array of objects with custom options(:using)
+    0.00296 seconds ./spec/grape_entity/entity_spec.rb:1822
 
 Top 6 slowest example groups:
   Grape::Entity
-    0.00573 seconds average (0.00573 seconds / 1 example) ./spec/grape_entity/hash_spec.rb:5
+    0.00827 seconds average (0.00827 seconds / 1 example) ./spec/grape_entity/hash_spec.rb:5
   Grape::Entity::Exposure::RepresentExposure
-    0.00243 seconds average (0.00728 seconds / 3 examples) ./spec/grape_entity/exposure/represent_exposure_spec.rb:5
-  Grape::Entity
-    0.00141 seconds average (0.2468 seconds / 175 examples) ./spec/grape_entity/entity_spec.rb:6
+    0.00345 seconds average (0.01035 seconds / 3 examples) ./spec/grape_entity/exposure/represent_exposure_spec.rb:5
   Grape::Entity::Exposure
-    0.0014 seconds average (0.01399 seconds / 10 examples) ./spec/grape_entity/exposure_spec.rb:5
+    0.00192 seconds average (0.01921 seconds / 10 examples) ./spec/grape_entity/exposure_spec.rb:5
+  Grape::Entity
+    0.00183 seconds average (0.31974 seconds / 175 examples) ./spec/grape_entity/entity_spec.rb:6
   Grape::Entity::Options
-    0.00097 seconds average (0.00485 seconds / 5 examples) ./spec/grape_entity/options_spec.rb:5
+    0.00127 seconds average (0.00635 seconds / 5 examples) ./spec/grape_entity/options_spec.rb:5
   Grape::Entity::Exposure::NestingExposure::NestedExposures
-    0.0008 seconds average (0.004 seconds / 5 examples) ./spec/grape_entity/exposure/nesting_exposure/nested_exposures_spec.rb:5
+    0.00101 seconds average (0.00507 seconds / 5 examples) ./spec/grape_entity/exposure/nesting_exposure/nested_exposures_spec.rb:5
 
-Finished in 0.29655 seconds (files took 1.18 seconds to load)
+Finished in 0.38622 seconds (files took 1.7 seconds to load)
 199 examples, 0 failures
 
 
@@ -1481,12 +1517,14 @@
 dpkg-buildpackage: info: binary-only upload (no source included)
 dpkg-genchanges: info: including full source code in upload
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/15221/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/15221/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/5919 and its subdirectories
-I: Current time: Thu Dec 26 23:44:58 -12 2024
-I: pbuilder-time-stamp: 1735299898
+I: removing directory /srv/workspace/pbuilder/15221 and its subdirectories
+I: Current time: Sat Dec 28 01:46:51 +14 2024
+I: pbuilder-time-stamp: 1735300011