Diff of the two buildlogs:

--
--- b1/build.log	2024-04-29 07:58:41.228673880 +0000
+++ b2/build.log	2024-04-29 08:00:07.988974506 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Apr 28 19:56:35 -12 2024
-I: pbuilder-time-stamp: 1714377395
+I: Current time: Mon Jun  2 04:21:42 +14 2025
+I: pbuilder-time-stamp: 1748787702
 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: unpacking bignumber.js_9.1.1-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/2697489/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/2926849/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos5-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 Jun  1 14:21 /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/2926849/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/2926849/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=20 '
-  DISTRIBUTION='unstable'
-  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]="21" [3]="1" [4]="release" [5]="x86_64-pc-linux-gnu")
+  BASH_VERSION='5.2.21(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=42 '
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='5178ed01959d49c69e51d6ebb75a022a'
-  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='2697489'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=0e193b68e0904d50a8275f549877d35e
+  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=2926849
   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.ZMmkU4UD/pbuilderrc_SqPM --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.ZMmkU4UD/b1 --logfile b1/build.log bignumber.js_9.1.1-1.dsc'
-  SUDO_GID='111'
-  SUDO_UID='106'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://46.16.76.132:3128'
+  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.ZMmkU4UD/pbuilderrc_8ZGZ --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.ZMmkU4UD/b2 --logfile b2/build.log bignumber.js_9.1.1-1.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://213.165.73.152:3128
 I: uname -a
-  Linux ionos11-amd64 6.1.0-20-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.85-1 (2024-04-11) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.6.13+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.6.13-1~bpo12+1 (2024-02-15) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Apr 27 07:43 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/2697489/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May 30 14:05 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/2926849/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -203,7 +235,7 @@
 Get: 91 http://deb.debian.org/debian unstable/main amd64 dh-nodejs all 0.15.19 [59.7 kB]
 Get: 92 http://deb.debian.org/debian unstable/main amd64 node-uglify-js all 3.17.4-2 [203 kB]
 Get: 93 http://deb.debian.org/debian unstable/main amd64 uglifyjs all 3.17.4-2 [12.1 kB]
-Fetched 35.6 MB in 2s (21.9 MB/s)
+Fetched 35.6 MB in 6s (6400 kB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 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 ... 19694 files and directories currently installed.)
@@ -598,7 +630,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/bignumber.js-9.1.1/ && 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  > ../bignumber.js_9.1.1-1_source.changes
+I: user script /srv/workspace/pbuilder/2926849/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/2926849/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/bignumber.js-9.1.1/ && 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  > ../bignumber.js_9.1.1-1_source.changes
 dpkg-buildpackage: info: source package bignumber.js
 dpkg-buildpackage: info: source version 9.1.1-1
 dpkg-buildpackage: info: source distribution unstable
@@ -630,38 +666,38 @@
 
  Testing bignumber.js
 
- Testing absoluteValue... 1001 of 1001 tests passed in 17 ms
- Testing bigNumber... 14533 of 14533 tests passed in 226 ms
- Testing comparedTo... 4023 of 4023 tests passed in 72 ms
- Testing clone... 32 of 32 tests passed in 2 ms
- Testing config... 136 of 136 tests passed in 10 ms
- Testing dividedBy... 1907 of 1907 tests passed in 115 ms
- Testing dividedToIntegerBy... 1001 of 1001 tests passed in 59 ms
- Testing decimalPlaces... 1960 of 1960 tests passed in 44 ms
- Testing exponentiatedBy... 1917 of 1917 tests passed in 257 ms
- Testing integerValue... 612 of 612 tests passed in 12 ms
- Testing isBigNumber... 64 of 64 tests passed in 5 ms
- Testing minimum and maximum... 115 of 115 tests passed in 4 ms
- Testing minus... 1756 of 1756 tests passed in 67 ms
- Testing modulo... 1798 of 1798 tests passed in 78 ms
- Testing multipliedBy... 2124 of 2124 tests passed in 64 ms
- Testing negated... 481 of 481 tests passed in 4 ms
- Testing `is` methods... 250 of 250 tests passed in 4 ms
- Testing plus... 1878 of 1878 tests passed in 45 ms
- Testing precision... 5000 of 5000 tests passed in 109 ms
- Testing random... 5000 of 5000 tests passed in 130 ms
- Testing shiftedBy... 45 of 45 tests passed in 2 ms
- Testing squareRoot... 10285 of 10285 tests passed in 291 ms
- Testing sum... 5 of 5 tests passed in 1 ms
- Testing toExponential... 697 of 697 tests passed in 15 ms
- Testing toFixed... 1326 of 1326 tests passed in 24 ms
- Testing toFormat... 116 of 116 tests passed in 3 ms
- Testing toFraction... 984 of 984 tests passed in 524 ms
- Testing toNumber... 33 of 33 tests passed in 1 ms
- Testing toPrecision... 713 of 713 tests passed in 15 ms
- Testing toString... 5337 of 5337 tests passed in 279 ms
+ Testing absoluteValue... 1001 of 1001 tests passed in 9 ms
+ Testing bigNumber... 14533 of 14533 tests passed in 107 ms
+ Testing comparedTo... 4023 of 4023 tests passed in 29 ms
+ Testing clone... 32 of 32 tests passed in 1 ms
+ Testing config... 136 of 136 tests passed in 5 ms
+ Testing dividedBy... 1907 of 1907 tests passed in 58 ms
+ Testing dividedToIntegerBy... 1001 of 1001 tests passed in 26 ms
+ Testing decimalPlaces... 1960 of 1960 tests passed in 18 ms
+ Testing exponentiatedBy... 1917 of 1917 tests passed in 102 ms
+ Testing integerValue... 612 of 612 tests passed in 6 ms
+ Testing isBigNumber... 64 of 64 tests passed in 3 ms
+ Testing minimum and maximum... 115 of 115 tests passed in 1 ms
+ Testing minus... 1756 of 1756 tests passed in 27 ms
+ Testing modulo... 1798 of 1798 tests passed in 37 ms
+ Testing multipliedBy... 2124 of 2124 tests passed in 28 ms
+ Testing negated... 481 of 481 tests passed in 2 ms
+ Testing `is` methods... 250 of 250 tests passed in 2 ms
+ Testing plus... 1878 of 1878 tests passed in 19 ms
+ Testing precision... 5000 of 5000 tests passed in 52 ms
+ Testing random... 5000 of 5000 tests passed in 56 ms
+ Testing shiftedBy... 45 of 45 tests passed in 1 ms
+ Testing squareRoot... 10285 of 10285 tests passed in 115 ms
+ Testing sum... 5 of 5 tests passed in 0 ms
+ Testing toExponential... 697 of 697 tests passed in 7 ms
+ Testing toFixed... 1326 of 1326 tests passed in 11 ms
+ Testing toFormat... 116 of 116 tests passed in 2 ms
+ Testing toFraction... 984 of 984 tests passed in 220 ms
+ Testing toNumber... 33 of 33 tests passed in 0 ms
+ Testing toPrecision... 713 of 713 tests passed in 7 ms
+ Testing toString... 5337 of 5337 tests passed in 127 ms
 
- In total, 65129 of 65129 tests passed in 2640 ms 
+ In total, 65129 of 65129 tests passed in 2850 ms 
 
 Removing node_modules/bignumber.js
    create-stamp debian/debhelper-build-stamp
@@ -696,11 +732,11 @@
 Set variable ${nodeBignumber:Provides} to:
   node-bignumber.js (= 9.1.1)
    dh_gencontrol
-dpkg-gencontrol: warning: package libjs-bignumber: substitution variable ${nodejs:Provides} unused, but is defined
-dpkg-gencontrol: warning: package libjs-bignumber: substitution variable ${nodejs:Version} unused, but is defined
 dpkg-gencontrol: warning: package node-bignumber: substitution variable ${nodeBignumber:Provides} unused, but is defined
 dpkg-gencontrol: warning: package node-bignumber: substitution variable ${nodejs:Provides} unused, but is defined
 dpkg-gencontrol: warning: package node-bignumber: substitution variable ${nodejs:Version} unused, but is defined
+dpkg-gencontrol: warning: package libjs-bignumber: substitution variable ${nodejs:Provides} unused, but is defined
+dpkg-gencontrol: warning: package libjs-bignumber: substitution variable ${nodejs:Version} unused, but is defined
    dh_md5sums
    dh_builddeb
 dpkg-deb: building package 'node-bignumber' in '../node-bignumber_9.1.1-1_all.deb'.
@@ -712,12 +748,14 @@
 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/2926849/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/2926849/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/2697489 and its subdirectories
-I: Current time: Sun Apr 28 19:58:40 -12 2024
-I: pbuilder-time-stamp: 1714377520
+I: removing directory /srv/workspace/pbuilder/2926849 and its subdirectories
+I: Current time: Mon Jun  2 04:23:05 +14 2025
+I: pbuilder-time-stamp: 1748787785