Diff of the two buildlogs:

--
--- b1/build.log	2025-01-26 08:03:25.777360790 +0000
+++ b2/build.log	2025-01-26 08:05:21.132175225 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sat Feb 28 02:25:34 -12 2026
-I: pbuilder-time-stamp: 1772288734
+I: Current time: Sun Jan 26 22:03:28 +14 2025
+I: pbuilder-time-stamp: 1737878608
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -22,52 +22,84 @@
 dpkg-source: info: unpacking libebook-tools-perl_0.5.4-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/1838581/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/2607380/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos1-amd64.
+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 Jan 26 08:03 /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/2607380/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/2607380/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='amd64'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=42 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='amd64'
+  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]="x86_64-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=amd64
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=20 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='15ad23dcf267464c87c1dc6cc37c1119'
-  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='1838581'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=924532b31bad4dc9859a7b1dd475911c
+  LANG=C
+  LANGUAGE=et_EE:et
+  LC_ALL=C
+  MACHTYPE=x86_64-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=2607380
   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.X4Y2xdLw/pbuilderrc_35IZ --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.X4Y2xdLw/b1 --logfile b1/build.log libebook-tools-perl_0.5.4-2.dsc'
-  SUDO_GID='110'
-  SUDO_UID='105'
-  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.X4Y2xdLw/pbuilderrc_pWso --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.X4Y2xdLw/b2 --logfile b2/build.log libebook-tools-perl_0.5.4-2.dsc'
+  SUDO_GID=110
+  SUDO_UID=105
+  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 ionos5-amd64 6.12.9+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.9-1~bpo12+1 (2025-01-19) 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/1838581/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/2607380/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -244,7 +276,7 @@
 Get: 93 http://deb.debian.org/debian trixie/main amd64 libxml-twig-perl all 1:3.52-3 [177 kB]
 Get: 94 http://deb.debian.org/debian trixie/main amd64 libyaml-syck-perl amd64 1.34-2+b4 [79.3 kB]
 Get: 95 http://deb.debian.org/debian trixie/main amd64 txt2html all 1:3.0-1 [95.2 kB]
-Fetched 31.1 MB in 3s (11.4 MB/s)
+Fetched 31.1 MB in 1s (32.4 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package netbase.
 (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 ... 19856 files and directories currently installed.)
@@ -649,7 +681,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/libebook-tools-perl-0.5.4/ && 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  > ../libebook-tools-perl_0.5.4-2_source.changes
+I: user script /srv/workspace/pbuilder/2607380/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/2607380/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/libebook-tools-perl-0.5.4/ && 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  > ../libebook-tools-perl_0.5.4-2_source.changes
 dpkg-buildpackage: info: source package libebook-tools-perl
 dpkg-buildpackage: info: source version 0.5.4-2
 dpkg-buildpackage: info: source distribution unstable
@@ -780,9 +816,9 @@
 ok 65 - print_errors() returns successfully
 ok 66 - print_warnings() returns successfully
 <?xml version="1.0" encoding="utf-8"?>
-<package unique-identifier="UUID" version="2.0" xmlns="http://www.idpf.org/2007/opf">
-  <metadata xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:opf="http://www.idpf.org/2007/opf">
-    <dc:identifier opf:scheme="UUID" id="UUID">3946c7c9-3f07-4a1e-88e9-67f66211a641</dc:identifier>
+<package version="2.0" xmlns="http://www.idpf.org/2007/opf" unique-identifier="UUID">
+  <metadata xmlns:opf="http://www.idpf.org/2007/opf" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <dc:identifier id="UUID" opf:scheme="UUID">13890fd3-b05d-432f-b487-200429030550</dc:identifier>
     <dc:title>New Title</dc:title>
     <dc:creator opf:role="aut">New Author</dc:creator>
   </metadata>
@@ -892,7 +928,7 @@
 ok 14 - hexstring() returns correct string
 ok 15 # skip Tidy not available
 ok 16 # skip Tidy not available
-Current memory usage [15-misc_procedures.t]:  size=68968k  resident=64340k  shared=9908k
+Current memory usage [15-misc_procedures.t]:  size=68972k  resident=65044k  shared=10160k
 ok 17 - print_memory returns sucessfully
 ok
 ERROR: Date::Manip unable to determine Time Zone.  GMT will be used. at /usr/share/perl5/Date/Manip/DM6.pm line 65.
@@ -1052,37 +1088,37 @@
 ok 1 - use EBook::Tools::IMP;
 ok 2 - Working in 't/
 ok 3 - load('imp/REBTestDocument.imp') returns succesfully
-ok 4 - detect_resource_type() correctly detects 'HfPZ'
-ok 5 - detect_resource_type() correctly detects 'AncT'
-ok 6 - detect_resource_type() correctly detects 'BPgZ'
+ok 4 - detect_resource_type() correctly detects 'Devm'
+ok 5 - detect_resource_type() correctly detects 'Tabl'
+ok 6 - detect_resource_type() correctly detects '!!sw'
 ok 7 - detect_resource_type() correctly detects 'PNG '
-ok 8 - detect_resource_type() correctly detects '!!sw'
-ok 9 - detect_resource_type() correctly detects 'StR2'
-ok 10 - detect_resource_type() correctly detects 'pInf'
-ok 11 - detect_resource_type() correctly detects 'TRow'
-ok 12 - detect_resource_type() correctly detects 'HfPz'
-ok 13 - detect_resource_type() correctly detects 'BPgz'
-ok 14 - detect_resource_type() correctly detects 'HRle'
-ok 15 - detect_resource_type() correctly detects 'BGcl'
-ok 16 - detect_resource_type() correctly detects 'Hyp2'
-ok 17 - detect_resource_type() correctly detects 'Styl'
-ok 18 - detect_resource_type() correctly detects 'StRn'
-ok 19 - detect_resource_type() correctly detects 'Pc31'
-ok 20 - detect_resource_type() correctly detects 'Pcz0'
-ok 21 - detect_resource_type() correctly detects 'PcZ0'
-ok 22 - detect_resource_type() correctly detects 'Lnks'
-ok 23 - detect_resource_type() correctly detects 'Pcz1'
-ok 24 - detect_resource_type() correctly detects 'Devm'
-ok 25 - detect_resource_type() correctly detects 'PcZ1'
-ok 26 - detect_resource_type() correctly detects 'Tabl'
-ok 27 - detect_resource_type() correctly detects 'ESts'
-ok 28 - detect_resource_type() correctly detects 'ImRn'
-ok 29 - detect_resource_type() correctly detects 'TCel'
-ok 30 - detect_resource_type() correctly detects 'PPic'
-ok 31 - detect_resource_type() correctly detects 'Mrgn'
-ok 32 - detect_resource_type() correctly detects 'JPEG'
-ok 33 - detect_resource_type() correctly detects '!!cm'
-ok 34 - detect_resource_type() correctly detects 'GIF '
+ok 8 - detect_resource_type() correctly detects 'pInf'
+ok 9 - detect_resource_type() correctly detects 'Lnks'
+ok 10 - detect_resource_type() correctly detects 'BPgz'
+ok 11 - detect_resource_type() correctly detects 'HfPZ'
+ok 12 - detect_resource_type() correctly detects 'StR2'
+ok 13 - detect_resource_type() correctly detects 'StRn'
+ok 14 - detect_resource_type() correctly detects 'PcZ1'
+ok 15 - detect_resource_type() correctly detects 'Pcz0'
+ok 16 - detect_resource_type() correctly detects 'Pc31'
+ok 17 - detect_resource_type() correctly detects 'PPic'
+ok 18 - detect_resource_type() correctly detects 'GIF '
+ok 19 - detect_resource_type() correctly detects '!!cm'
+ok 20 - detect_resource_type() correctly detects 'TCel'
+ok 21 - detect_resource_type() correctly detects 'Pcz1'
+ok 22 - detect_resource_type() correctly detects 'ImRn'
+ok 23 - detect_resource_type() correctly detects 'PcZ0'
+ok 24 - detect_resource_type() correctly detects 'JPEG'
+ok 25 - detect_resource_type() correctly detects 'BPgZ'
+ok 26 - detect_resource_type() correctly detects 'Hyp2'
+ok 27 - detect_resource_type() correctly detects 'AncT'
+ok 28 - detect_resource_type() correctly detects 'Mrgn'
+ok 29 - detect_resource_type() correctly detects 'HfPz'
+ok 30 - detect_resource_type() correctly detects 'Styl'
+ok 31 - detect_resource_type() correctly detects 'BGcl'
+ok 32 - detect_resource_type() correctly detects 'TRow'
+ok 33 - detect_resource_type() correctly detects 'HRle'
+ok 34 - detect_resource_type() correctly detects 'ESts'
 ok 35 - image() returns undef
 ok 36 - image(jpg) returns undef
 ok 37 - image(jpg,$id) finds JPG data
@@ -1149,7 +1185,7 @@
 t/98-pod.t ................. skipped: Test::Pod 1.00 required for testing POD
 t/99-pod_coverage.t ........ skipped: Test::Pod::Coverage 1.00 required for testing POD coverage
 All tests successful.
-Files=12, Tests=414,  6 wallclock secs ( 0.08 usr  0.04 sys +  4.48 cusr  0.81 csys =  5.41 CPU)
+Files=12, Tests=414,  9 wallclock secs ( 0.14 usr  0.03 sys +  7.53 cusr  1.89 csys =  9.59 CPU)
 Result: PASS
    create-stamp debian/debhelper-build-stamp
    dh_prep
@@ -1158,23 +1194,23 @@
 Building EBook-Tools
 Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/man/man1/ebook.1p
 Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/perl5/EBook/Tools.pm
-Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/perl5/EBook/Tools/IMP.pm
+Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/perl5/EBook/Tools/Unpack.pm
+Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/perl5/EBook/Tools/BISG.pm
+Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/perl5/EBook/Tools/MSReader.pm
 Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/perl5/EBook/Tools/PalmDoc.pm
-Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/perl5/EBook/Tools/Mobipocket.pm
 Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/perl5/EBook/Tools/LZSS.pm
 Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/perl5/EBook/Tools/EReader.pm
-Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/perl5/EBook/Tools/MSReader.pm
-Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/perl5/EBook/Tools/BISG.pm
-Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/perl5/EBook/Tools/Unpack.pm
+Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/perl5/EBook/Tools/IMP.pm
+Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/perl5/EBook/Tools/Mobipocket.pm
 Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/man/man3/EBook::Tools::PalmDoc.3pm
-Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/man/man3/EBook::Tools::Unpack.3pm
+Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/man/man3/EBook::Tools::EReader.3pm
 Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/man/man3/EBook::Tools.3pm
-Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/man/man3/EBook::Tools::IMP.3pm
-Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/man/man3/EBook::Tools::LZSS.3pm
 Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/man/man3/EBook::Tools::Mobipocket.3pm
-Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/man/man3/EBook::Tools::EReader.3pm
-Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/man/man3/EBook::Tools::MSReader.3pm
+Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/man/man3/EBook::Tools::Unpack.3pm
+Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/man/man3/EBook::Tools::LZSS.3pm
 Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/man/man3/EBook::Tools::BISG.3pm
+Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/man/man3/EBook::Tools::MSReader.3pm
+Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/share/man/man3/EBook::Tools::IMP.3pm
 Installing /build/reproducible-path/libebook-tools-perl-0.5.4/debian/libebook-tools-perl/usr/bin/ebook
    dh_installdocs
    dh_installchangelogs
@@ -1197,12 +1233,14 @@
 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/2607380/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/2607380/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/1838581 and its subdirectories
-I: Current time: Sat Feb 28 02:26:25 -12 2026
-I: pbuilder-time-stamp: 1772288785
+I: removing directory /srv/workspace/pbuilder/2607380 and its subdirectories
+I: Current time: Sun Jan 26 22:05:20 +14 2025
+I: pbuilder-time-stamp: 1737878720