Diff of the two buildlogs:

--
--- b1/build.log	2025-02-09 04:29:59.849079307 +0000
+++ b2/build.log	2025-02-09 04:31:49.268124287 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Fri Mar 13 22:51:48 -12 2026
-I: pbuilder-time-stamp: 1773485508
+I: Current time: Sun Feb  9 18:30:02 +14 2025
+I: pbuilder-time-stamp: 1739075402
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -28,54 +28,86 @@
 dpkg-source: info: applying source-encoding.patch
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/37182/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/26301/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos2-i386.
+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 Feb  9 04:30 /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/26301/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/26301/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='i386'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=22 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='i386'
+  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]="i686-pc-linux-gnu")
+  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=i386
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=10 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=i686
+  HOST_ARCH=i386
   IFS=' 	
   '
-  INVOCATION_ID='c806be21be8c415abe70b690dd3287fc'
-  LANG='C'
-  LANGUAGE='en_US:en'
-  LC_ALL='C'
-  LD_LIBRARY_PATH='/usr/lib/libeatmydata'
-  LD_PRELOAD='libeatmydata.so'
-  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='37182'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=af9878ae9b624fbbbc17b98d75692ef8
+  LANG=C
+  LANGUAGE=de_CH:de
+  LC_ALL=C
+  LD_LIBRARY_PATH=/usr/lib/libeatmydata
+  LD_PRELOAD=libeatmydata.so
+  MACHTYPE=i686-pc-linux-gnu
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnu
+  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=26301
   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.7mMcdFne/pbuilderrc_KPaG --distribution trixie --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/trixie-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.7mMcdFne/b1 --logfile b1/build.log javacc4_4.0-3.dsc'
-  SUDO_GID='112'
-  SUDO_UID='107'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://213.165.73.152:3128'
+  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.7mMcdFne/pbuilderrc_rbDw --distribution trixie --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/trixie-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.7mMcdFne/b2 --logfile b2/build.log javacc4_4.0-3.dsc'
+  SUDO_GID=112
+  SUDO_UID=107
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://46.16.76.132:3128
 I: uname -a
-  Linux ionos6-i386 6.1.0-30-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.124-1 (2025-01-12) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-30-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.124-1 (2025-01-12) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/37182/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/26301/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -321,7 +353,7 @@
 Get: 192 http://deb.debian.org/debian trixie/main i386 libxerces2-java all 2.12.2-1 [1440 kB]
 Get: 193 http://deb.debian.org/debian trixie/main i386 libxalan2-java all 2.7.2-4 [3419 kB]
 Get: 194 http://deb.debian.org/debian trixie/main i386 maven-repo-helper all 1.11 [142 kB]
-Fetched 252 MB in 3s (80.3 MB/s)
+Fetched 252 MB in 3s (97.4 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libsystemd-shared:i386.
 (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
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(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
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(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19828 files and directories currently installed.)
@@ -1334,7 +1366,11 @@
 fakeroot is already the newest version (1.37-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/javacc4-4.0/ && 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  > ../javacc4_4.0-3_source.changes
+I: user script /srv/workspace/pbuilder/26301/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/26301/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/javacc4-4.0/ && 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  > ../javacc4_4.0-3_source.changes
 dpkg-buildpackage: info: source package javacc4
 dpkg-buildpackage: info: source version 4.0-3
 dpkg-buildpackage: info: source distribution unstable
@@ -1383,8 +1419,8 @@
      [java] Java Compiler Compiler Version 5.0 (Parser Generator)
      [java] (type "javacc" with no arguments for help)
      [java] Reading from file /build/reproducible-path/javacc4-4.0/src/org/javacc/parser/JavaCC.jj . . .
-     [java] Warning: Token.java: File is obsolete.  Please rename or delete this file so that a new one can be generated for you.
      [java] File "TokenMgrError.java" does not exist.  Will create one.
+     [java] Warning: Token.java: File is obsolete.  Please rename or delete this file so that a new one can be generated for you.
      [java] File "ParseException.java" does not exist.  Will create one.
      [java] File "JavaCharStream.java" does not exist.  Will create one.
      [java] Parser generated with 0 errors and 1 warnings.
@@ -1429,11 +1465,11 @@
      [java] Java Compiler Compiler Version 5.0 (Parser Generator)
      [java] (type "javacc" with no arguments for help)
      [java] Reading from file /build/reproducible-path/javacc4-4.0/src/org/javacc/jjtree/JJTree.jj . . .
+     [java] Warning: Token.java: File is obsolete.  Please rename or delete this file so that a new one can be generated for you.
      [java] File "TokenMgrError.java" does not exist.  Will create one.
      [java] File "ParseException.java" does not exist.  Will create one.
      [java] File "JavaCharStream.java" does not exist.  Will create one.
      [java] Parser generated with 0 errors and 1 warnings.
-     [java] Warning: Token.java: File is obsolete.  Please rename or delete this file so that a new one can be generated for you.
 
 classes:
     [mkdir] Created dir: /build/reproducible-path/javacc4-4.0/classes
@@ -1572,7 +1608,7 @@
       [jar] Building jar: /build/reproducible-path/javacc4-4.0/bin/lib/javacc.jar
 
 BUILD SUCCESSFUL
-Total time: 4 seconds
+Total time: 8 seconds
 # Rebuild with JavaCC 4
 cp bin/lib/javacc.jar bootstrap/
 dh_auto_build -- realclean
@@ -1789,7 +1825,7 @@
       [jar] Building jar: /build/reproducible-path/javacc4-4.0/bin/lib/javacc.jar
 
 BUILD SUCCESSFUL
-Total time: 4 seconds
+Total time: 8 seconds
 docbook-to-man debian/manpage.sgml >bin/javacc4.1
 cp bin/javacc  bin/javacc4
 cp bin/jjdoc   bin/jjdoc4
@@ -1862,11 +1898,11 @@
      [java] Java Compiler Compiler Version 4.0 (Parser Generator)
      [java] (type "javacc" with no arguments for help)
      [java] Reading from file /build/reproducible-path/javacc4-4.0/src/org/javacc/jjtree/JJTree.jj . . .
-     [java] Warning: Token.java: File is obsolete.  Please rename or delete this file so that a new one can be generated for you.
      [java] File "TokenMgrError.java" does not exist.  Will create one.
      [java] File "ParseException.java" does not exist.  Will create one.
      [java] File "JavaCharStream.java" does not exist.  Will create one.
      [java] Parser generated with 0 errors and 1 warnings.
+     [java] Warning: Token.java: File is obsolete.  Please rename or delete this file so that a new one can be generated for you.
 
 classes:
     [mkdir] Created dir: /build/reproducible-path/javacc4-4.0/classes
@@ -2006,15 +2042,15 @@
 
 test:
     [junit] Running org.javacc.jjtree.JJTreeOptionsTest
-    [junit] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.003 sec
+    [junit] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.005 sec
     [junit] Running org.javacc.parser.OptionsTest
-    [junit] Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.002 sec
+    [junit] Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.003 sec
     [mkdir] Created dir: /build/reproducible-path/javacc4-4.0/test.tmp
      [echo] 
      [java] Java Compiler Compiler Version 4.0 (Parser Generator)
-     [java] (type "javacc" with no arguments for help)Warning: Output directory "test.tmp/CORBA-IDL" does not exist. Creating the directory.
-     [java] 
+     [java] (type "javacc" with no arguments for help)
      [java] Reading from file examples/CORBA-IDL/IDL.jj . . .
+     [java] Warning: Output directory "test.tmp/CORBA-IDL" does not exist. Creating the directory.
      [java] File "TokenMgrError.java" does not exist.  Will create one.
      [java] File "ParseException.java" does not exist.  Will create one.
      [java] File "Token.java" does not exist.  Will create one.
@@ -2343,10 +2379,10 @@
     [javac] Note: Recompile with -Xlint:unchecked for details.
     [javac] 5 warnings
      [echo] 
+     [java] Warning: Output directory "test.tmp/JavaCCGrammar" does not exist. Creating the directory.
      [java] Java Compiler Compiler Version 4.0 (Parser Generator)
      [java] (type "javacc" with no arguments for help)
      [java] Reading from file examples/JavaCCGrammar/JavaCC.jj . . .
-     [java] Warning: Output directory "test.tmp/JavaCCGrammar" does not exist. Creating the directory.
      [java] File "TokenMgrError.java" does not exist.  Will create one.
      [java] File "ParseException.java" does not exist.  Will create one.
      [java] File "Token.java" does not exist.  Will create one.
@@ -2367,10 +2403,10 @@
      [echo] 
      [java] Java Compiler Compiler Version 4.0 (Parser Generator)
      [java] (type "javacc" with no arguments for help)
-     [java] Warning: Output directory "test.tmp/MailProcessing" does not exist. Creating the directory.
-     [java] Reading from file examples/MailProcessing/Digest.jj . . .
+     [java] Warning: Output directory "test.tmp/MailProcessing" does not exist. Creating the directory.Reading from file examples/MailProcessing/Digest.jj . . .
      [java] File "TokenMgrError.java" does not exist.  Will create one.
      [java] File "ParseException.java" does not exist.  Will create one.
+     [java] 
      [java] File "Token.java" does not exist.  Will create one.
      [java] File "SimpleCharStream.java" does not exist.  Will create one.
      [java] Parser generated with 0 errors and 1 warnings.
@@ -2566,7 +2602,7 @@
     [javac] 5 warnings
 
 BUILD SUCCESSFUL
-Total time: 10 seconds
+Total time: 18 seconds
 make[1]: Leaving directory '/build/reproducible-path/javacc4-4.0'
    create-stamp debian/debhelper-build-stamp
    dh_prep
@@ -2586,8 +2622,8 @@
    dh_gencontrol
    dh_md5sums
    dh_builddeb
-dpkg-deb: building package 'javacc4' in '../javacc4_4.0-3_all.deb'.
 dpkg-deb: building package 'javacc4-doc' in '../javacc4-doc_4.0-3_all.deb'.
+dpkg-deb: building package 'javacc4' in '../javacc4_4.0-3_all.deb'.
  dpkg-genbuildinfo --build=binary -O../javacc4_4.0-3_i386.buildinfo
  dpkg-genchanges --build=binary -O../javacc4_4.0-3_i386.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -2595,12 +2631,14 @@
 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/26301/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/26301/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/37182 and its subdirectories
-I: Current time: Fri Mar 13 22:52:59 -12 2026
-I: pbuilder-time-stamp: 1773485579
+I: removing directory /srv/workspace/pbuilder/26301 and its subdirectories
+I: Current time: Sun Feb  9 18:31:48 +14 2025
+I: pbuilder-time-stamp: 1739075508