Diff of the two buildlogs:

--
--- b1/build.log	2025-02-04 13:22:20.874299399 +0000
+++ b2/build.log	2025-02-04 13:28:38.213236750 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Mar  9 07:28:05 -12 2026
-I: pbuilder-time-stamp: 1773084485
+I: Current time: Wed Feb  5 03:22:26 +14 2025
+I: pbuilder-time-stamp: 1738675346
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -31,54 +31,86 @@
 dpkg-source: info: applying drop-nashorn.jdk15.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/69671/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/24632/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos12-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  4 13:22 /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/24632/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/24632/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='76b87a32563943e1a8b9c7c1b1e70d75'
-  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='69671'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=e49509aad31244e181073c58b7cbf1e1
+  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=24632
   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.ZEUYBaSe/pbuilderrc_4FuC --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.ZEUYBaSe/b1 --logfile b1/build.log visualvm_2.1.10-1.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.ZEUYBaSe/pbuilderrc_PvHm --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.ZEUYBaSe/b2 --logfile b2/build.log visualvm_2.1.10-1.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 ionos16-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/69671/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/24632/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -359,7 +391,7 @@
 Get: 231 http://deb.debian.org/debian trixie/main i386 libnb-platform18-java all 12.1-3 [5129 kB]
 Get: 232 http://deb.debian.org/debian trixie/main i386 libnb-platform-devel-java all 12.1-3 [372 kB]
 Get: 233 http://deb.debian.org/debian trixie/main i386 libstringtemplate-java all 3.2.1-4 [113 kB]
-Fetched 273 MB in 33s (8344 kB/s)
+Fetched 273 MB in 5s (53.9 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%
(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 ... 19829 files and directories currently installed.)
@@ -1520,7 +1552,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/visualvm-2.1.10/ && 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  > ../visualvm_2.1.10-1_source.changes
+I: user script /srv/workspace/pbuilder/24632/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/24632/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/visualvm-2.1.10/ && 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  > ../visualvm_2.1.10-1_source.changes
 dpkg-buildpackage: info: source package visualvm
 dpkg-buildpackage: info: source version 2.1.10-1
 dpkg-buildpackage: info: source distribution unstable
@@ -1604,12 +1640,12 @@
 
 branding:
     [mkdir] Created dir: /build/reproducible-path/visualvm-2.1.10/visualvm/build/cluster
-      [jar] Building jar: /build/reproducible-path/visualvm-2.1.10/visualvm/build/cluster/core/locale/core_visualvm.jar
       [jar] Building jar: /build/reproducible-path/visualvm-2.1.10/visualvm/build/cluster/modules/ext/locale/updater_visualvm.jar
       [jar] Building jar: /build/reproducible-path/visualvm-2.1.10/visualvm/build/cluster/modules/locale/org-netbeans-modules-profiler_visualvm.jar
+      [jar] Building jar: /build/reproducible-path/visualvm-2.1.10/visualvm/build/cluster/modules/locale/org-netbeans-core-windows_visualvm.jar
       [jar] Building jar: /build/reproducible-path/visualvm-2.1.10/visualvm/build/cluster/modules/locale/org-netbeans-core_visualvm.jar
       [jar] Building jar: /build/reproducible-path/visualvm-2.1.10/visualvm/build/cluster/modules/locale/org-netbeans-modules-autoupdate-ui_visualvm.jar
-      [jar] Building jar: /build/reproducible-path/visualvm-2.1.10/visualvm/build/cluster/modules/locale/org-netbeans-core-windows_visualvm.jar
+      [jar] Building jar: /build/reproducible-path/visualvm-2.1.10/visualvm/build/cluster/core/locale/core_visualvm.jar
 
 -release.dir:
 
@@ -4551,6 +4587,9 @@
  [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/libs.profiler/profiler.heapwalker/src/org/graalvm/visualvm/lib/profiler/heapwalk/details/jdk/image/ImageDetailProvider.java:69: warning: Undocumented format parameter {1}
  [nb-javac]     "ImageDetailProvider_Dimension=Dimension: {0}x{1}", // NOI18N
  [nb-javac]     ^
+ [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/libs.profiler/profiler.heapwalker/src/org/graalvm/visualvm/lib/profiler/heapwalk/details/jdk/image/ImageExportAction.java:58: warning: Undocumented format parameter {0}
+ [nb-javac]     "ImageExportAction_WrongFormat=File type {0} is not supported.", // NOI18N
+ [nb-javac]     ^
  [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/libs.profiler/profiler.heapwalker/src/org/graalvm/visualvm/lib/profiler/heapwalk/details/jdk/image/ImageDetailProvider.java:66: warning: Undocumented format parameter {0}
  [nb-javac]     "ImageDetailProvider_ImageDescrColors=size={0}x{1}, {2} colors", // NOI18N
  [nb-javac]     ^
@@ -4560,9 +4599,6 @@
  [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/libs.profiler/profiler.heapwalker/src/org/graalvm/visualvm/lib/profiler/heapwalk/details/jdk/image/ImageDetailProvider.java:66: warning: Undocumented format parameter {2}
  [nb-javac]     "ImageDetailProvider_ImageDescrColors=size={0}x{1}, {2} colors", // NOI18N
  [nb-javac]     ^
- [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/libs.profiler/profiler.heapwalker/src/org/graalvm/visualvm/lib/profiler/heapwalk/details/jdk/image/ImageExportAction.java:58: warning: Undocumented format parameter {0}
- [nb-javac]     "ImageExportAction_WrongFormat=File type {0} is not supported.", // NOI18N
- [nb-javac]     ^
  [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/libs.profiler/profiler.heapwalker/src/org/graalvm/visualvm/lib/profiler/heapwalk/details/jdk/image/ImageExportAction.java:57: warning: Undocumented format parameter {0}
  [nb-javac]     "ImageExportAction_OverwriteFileMsg=<html><b>File {0} already exists.</b><br><br>Do you want to replace it?</html>", // NOI18N
  [nb-javac]     ^
@@ -8353,15 +8389,15 @@
  [nb-javac] warning: [options] source value 8 is obsolete and will be removed in a future release
  [nb-javac] warning: [options] target value 8 is obsolete and will be removed in a future release
  [nb-javac] warning: [options] To suppress warnings about obsolete options, use -Xlint:-options.
+ [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/heapviewer.truffle/src/org/graalvm/visualvm/heapviewer/truffle/TruffleInstancePropertyProvider.java:57: warning: Undocumented format parameter {0}
+ [nb-javac]     "TruffleInstancePropertyProvider_ComputingNodes=<computing {0}...>", // <computing items...>
+ [nb-javac]     ^
  [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/heapviewer.truffle/src/org/graalvm/visualvm/heapviewer/truffle/TruffleObjectsProvider.java:64: warning: Undocumented format parameter {0}
  [nb-javac]     "TruffleObjectsProvider_NodesContainerDominators=<dominators {0}-{1}>",
  [nb-javac]     ^
  [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/heapviewer.truffle/src/org/graalvm/visualvm/heapviewer/truffle/TruffleObjectsProvider.java:64: warning: Undocumented format parameter {1}
  [nb-javac]     "TruffleObjectsProvider_NodesContainerDominators=<dominators {0}-{1}>",
  [nb-javac]     ^
- [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/heapviewer.truffle/src/org/graalvm/visualvm/heapviewer/truffle/TruffleInstancePropertyProvider.java:57: warning: Undocumented format parameter {0}
- [nb-javac]     "TruffleInstancePropertyProvider_ComputingNodes=<computing {0}...>", // <computing items...>
- [nb-javac]     ^
  [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/heapviewer.truffle/src/org/graalvm/visualvm/heapviewer/truffle/TruffleObjectPropertyProvider.java:67: warning: Undocumented format parameter {0}
  [nb-javac]     "TruffleObjectPropertyProvider_FieldHistogramSamplesContainer=<sample {0} values>",
  [nb-javac]     ^
@@ -8437,15 +8473,15 @@
  [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/heapviewer.truffle/src/org/graalvm/visualvm/heapviewer/truffle/TruffleObjectPropertyProvider.java:66: warning: Undocumented format parameter {0}
  [nb-javac]     "TruffleObjectPropertyProvider_FieldHistogramMoreNodes=<another {0} values left>",
  [nb-javac]     ^
- [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/heapviewer.truffle/src/org/graalvm/visualvm/heapviewer/truffle/TruffleObjectsProvider.java:63: warning: Undocumented format parameter {0}
- [nb-javac]     "TruffleObjectsProvider_SamplesContainerDominators=<sample {0} dominators>",
- [nb-javac]     ^
  [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/heapviewer.truffle/src/org/graalvm/visualvm/heapviewer/truffle/TruffleInstancePropertyProvider.java:58: warning: Undocumented format parameter {0}
  [nb-javac]     "TruffleInstancePropertyProvider_MoreNodes=<another {0} {1} left>", // <another 1234 items left>
  [nb-javac]     ^
  [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/heapviewer.truffle/src/org/graalvm/visualvm/heapviewer/truffle/TruffleInstancePropertyProvider.java:58: warning: Undocumented format parameter {1}
  [nb-javac]     "TruffleInstancePropertyProvider_MoreNodes=<another {0} {1} left>", // <another 1234 items left>
  [nb-javac]     ^
+ [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/heapviewer.truffle/src/org/graalvm/visualvm/heapviewer/truffle/TruffleObjectsProvider.java:63: warning: Undocumented format parameter {0}
+ [nb-javac]     "TruffleObjectsProvider_SamplesContainerDominators=<sample {0} dominators>",
+ [nb-javac]     ^
  [nb-javac] /build/reproducible-path/visualvm-2.1.10/visualvm/heapviewer.truffle/src/org/graalvm/visualvm/heapviewer/truffle/TruffleObjectsProvider.java:56: warning: Undocumented format parameter {0}
  [nb-javac]     "TruffleObjectsProvider_NodesContainerObjects=<objects {0}-{1}>",
  [nb-javac]     ^
@@ -11022,7 +11058,7 @@
   [genlist] Generating Auto Update information for org.graalvm.visualvm.graalvm
 
 BUILD SUCCESSFUL
-Total time: 8 minutes 30 seconds
+Total time: 2 minutes 39 seconds
 make[1]: Leaving directory '/build/reproducible-path/visualvm-2.1.10'
    create-stamp debian/debhelper-build-stamp
    dh_prep
@@ -11062,9 +11098,9 @@
    dh_gencontrol
    dh_md5sums
    dh_builddeb
-dpkg-deb: building package 'libvisualvm-jni' in '../libvisualvm-jni_2.1.10-1_i386.deb'.
 dpkg-deb: building package 'visualvm' in '../visualvm_2.1.10-1_all.deb'.
 dpkg-deb: building package 'libvisualvm-jni-dbgsym' in '../libvisualvm-jni-dbgsym_2.1.10-1_i386.deb'.
+dpkg-deb: building package 'libvisualvm-jni' in '../libvisualvm-jni_2.1.10-1_i386.deb'.
  dpkg-genbuildinfo --build=binary -O../visualvm_2.1.10-1_i386.buildinfo
  dpkg-genchanges --build=binary -O../visualvm_2.1.10-1_i386.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -11072,12 +11108,14 @@
 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/24632/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/24632/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/69671 and its subdirectories
-I: Current time: Mon Mar  9 07:45:09 -12 2026
-I: pbuilder-time-stamp: 1773085509
+I: removing directory /srv/workspace/pbuilder/24632 and its subdirectories
+I: Current time: Wed Feb  5 03:28:37 +14 2025
+I: pbuilder-time-stamp: 1738675717