Diff of the two buildlogs:

--
--- b1/build.log	2025-03-18 08:47:53.308654706 +0000
+++ b2/build.log	2025-03-18 08:55:46.267335541 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Mar 17 20:35:45 -12 2025
-I: pbuilder-time-stamp: 1742286945
+I: Current time: Tue Mar 18 22:48:08 +14 2025
+I: pbuilder-time-stamp: 1742287688
 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 0005-fix-hatchling-breaking-backportability.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/13819/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/14111/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 08:48 /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/14111/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/14111/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='c3c50440cdba4ed39597b586de4e912d'
-  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='13819'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=d5373ddf48ce46d58f205cada0b7e8b4
+  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=14111
   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.xRvhR04d/pbuilderrc_JTro --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.xRvhR04d/b1 --logfile b1/build.log yt-dlp_2025.02.19-1.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.xRvhR04d/pbuilderrc_eY9e --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.xRvhR04d/b2 --logfile b2/build.log yt-dlp_2025.02.19-1.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/13819/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/14111/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -186,7 +218,7 @@
 Get: 62 http://deb.debian.org/debian unstable/main armhf python3-iniconfig all 1.1.1-2 [6396 B]
 Get: 63 http://deb.debian.org/debian unstable/main armhf python3-pytest all 8.3.5-1 [250 kB]
 Get: 64 http://deb.debian.org/debian unstable/main armhf zip armhf 3.0-14 [221 kB]
-Fetched 60.3 MB in 4s (16.0 MB/s)
+Fetched 60.3 MB in 1s (59.9 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libpython3.13-minimal: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.)
@@ -406,8 +438,8 @@
 Setting up tzdata (2025a-2) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Tue Mar 18 08:37:06 UTC 2025.
-Universal Time is now:  Tue Mar 18 08:37:06 UTC 2025.
+Local time is now:      Tue Mar 18 08:48:53 UTC 2025.
+Universal Time is now:  Tue Mar 18 08:48:53 UTC 2025.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up zip (3.0-14) ...
@@ -469,7 +501,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/yt-dlp-2025.02.19/ && 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  > ../yt-dlp_2025.02.19-1_source.changes
+I: user script /srv/workspace/pbuilder/14111/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/14111/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/yt-dlp-2025.02.19/ && 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  > ../yt-dlp_2025.02.19-1_source.changes
 dpkg-buildpackage: info: source package yt-dlp
 dpkg-buildpackage: info: source version 2025.02.19-1
 dpkg-buildpackage: info: source distribution unstable
@@ -844,7 +880,7 @@
 test/test_networking.py::TestHTTPRequestHandler::test_connect_timeout[Urllib] PASSED [ 28%]
 test/test_networking.py::TestHTTPRequestHandler::test_connect_timeout[Requests] SKIPPED [ 28%]
 test/test_networking.py::TestHTTPRequestHandler::test_connect_timeout[CurlCFFI] SKIPPED [ 28%]
-test/test_networking.py::TestHTTPRequestHandler::test_source_address[Urllib] Exception occurred during processing of request from ('127.0.0.120', 45235)
+test/test_networking.py::TestHTTPRequestHandler::test_source_address[Urllib] Exception occurred during processing of request from ('127.0.0.55', 56423)
 Traceback (most recent call last):
   File "/usr/lib/python3.13/socketserver.py", line 697, in process_request_thread
     self.finish_request(request, client_address)
@@ -1221,8 +1257,37 @@
 test/test_postprocessors.py::TestModifyChaptersPP::test_quote_for_concat_RunsOfQuotes PASSED [ 64%]
 test/test_postprocessors.py::TestModifyChaptersPP::test_remove_marked_arrange_sponsors_CanGetThroughUnaltered PASSED [ 64%]
 test/test_postprocessors.py::TestModifyChaptersPP::test_remove_marked_arrange_sponsors_ChapterWithAdjacentCuts PASSED [ 64%]
-test/test_postprocessors.py::TestModifyChaptersPP::test_remove_marked_arrange_sponsors_ChapterWithAdjacentSponsors PASSED [ 64%]
-test/test_postprocessors.py::TestModifyChaptersPP::test_remove_marked_arrange_sponsors_ChapterWithCutHidingSponsor PASSED [ 64%]
+test/test_postprocessors.py::TestModifyChaptersPP::test_remove_marked_arrange_sponsors_ChapterWithAdjacentSponsors ----------------------------------------
+Exception occurred during processing of request from ('127.0.0.1', 43276)
+PASSED [ 64%]Traceback (most recent call last):
+  File "/usr/lib/python3.13/socketserver.py", line 697, in process_request_thread
+    self.finish_request(request, client_address)
+    ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^
+  File "/usr/lib/python3.13/socketserver.py", line 362, in finish_request
+    self.RequestHandlerClass(request, client_address, self)
+    ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+test/test_postprocessors.py::TestModifyChaptersPP::test_remove_marked_arrange_sponsors_ChapterWithCutHidingSponsor   File "/usr/lib/python3.13/socketserver.py", line 766, in __init__
+    self.handle()
+    ~~~~~~~~~~~^^
+  File "/usr/lib/python3.13/http/server.py", line 436, in handle
+    self.handle_one_request()
+    ~~~~~~~~~~~~~~~~~~~~~~~^^
+  File "/usr/lib/python3.13/http/server.py", line 424, in handle_one_request
+    method()
+    ~~~~~~^^
+  File "/build/reproducible-path/yt-dlp-2025.02.19/test/test_networking.py", line 259, in do_GET
+    self._headers()
+    ~~~~~~~~~~~~~^^
+  File "/build/reproducible-path/yt-dlp-2025.02.19/test/test_networking.py", line 84, in _headers
+    self.wfile.write(payload)
+    ~~~~~~~~~~~~~~~~^^^^^^^^^
+  File "/usr/lib/python3.13/socketserver.py", line 845, in write
+    self._sock.sendall(b)
+    ~~~~~~~~~~~~~~~~~~^^^
+BrokenPipeError: [Errno 32] Broken pipe
+----------------------------------------
+PASSED [ 64%]
 test/test_postprocessors.py::TestModifyChaptersPP::test_remove_marked_arrange_sponsors_ChapterWithCuts PASSED [ 64%]
 test/test_postprocessors.py::TestModifyChaptersPP::test_remove_marked_arrange_sponsors_ChapterWithOverlappingCuts PASSED [ 64%]
 test/test_postprocessors.py::TestModifyChaptersPP::test_remove_marked_arrange_sponsors_ChapterWithOverlappingSponsors PASSED [ 64%]
@@ -1796,7 +1861,7 @@
 SKIPPED [10] test/test_websockets.py:435: Websockets request handler is not available
 SKIPPED [6] test/test_websockets.py:466: Websockets request handler is not available
 SKIPPED [5] test/test_websockets.py:483: Websockets request handler is not available
-======== 627 passed, 379 skipped, 6010 deselected in 521.72s (0:08:41) =========
+======== 627 passed, 379 skipped, 6010 deselected in 317.84s (0:05:17) =========
 make[2]: Leaving directory '/build/reproducible-path/yt-dlp-2025.02.19'
 make[1]: Leaving directory '/build/reproducible-path/yt-dlp-2025.02.19'
    create-stamp debian/debhelper-build-stamp
@@ -1840,12 +1905,14 @@
 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/14111/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/14111/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/13819 and its subdirectories
-I: Current time: Mon Mar 17 20:47:49 -12 2025
-I: pbuilder-time-stamp: 1742287669
+I: removing directory /srv/workspace/pbuilder/14111 and its subdirectories
+I: Current time: Tue Mar 18 22:55:41 +14 2025
+I: pbuilder-time-stamp: 1742288141