Diff of the two buildlogs:

--
--- b1/build.log	2020-03-06 20:30:01.398780297 +0000
+++ b2/build.log	2020-03-06 20:30:24.986325534 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Fri Mar  6 08:24:58 -12 2020
-I: pbuilder-time-stamp: 1583526298
+I: Current time: Fri Apr  9 16:53:02 +14 2021
+I: pbuilder-time-stamp: 1617936782
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/buster-reproducible-base.tgz]
 I: copying local configuration
@@ -18,7 +18,7 @@
 I: Extracting source
 gpgv: unknown type of key resource 'trustedkeys.kbx'
 gpgv: keyblock resource '/root/.gnupg/trustedkeys.kbx': General error
-gpgv: Signature made Fri Nov 16 00:37:27 2018 -12
+gpgv: Signature made Sat Nov 17 02:37:27 2018 +14
 gpgv:                using RSA key DE6BA671D57D9B009CF686505EE76EE20216D2A5
 gpgv: Can't check signature: No public key
 dpkg-source: warning: failed to verify signature on ./super-save-el_0.3.0-1.dsc
@@ -29,6 +29,18 @@
 dpkg-source: info: applying 0001-clean-documentation.diff
 I: Not using root during the build.
 I: Installing the build-deps
+I: user script /srv/workspace/pbuilder/59747/tmp/hooks/D01_modify_environment starting
+disorder-fs debug: Running on profitbricks-build16-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
+Removing 'diversion of /bin/sh to /bin/sh.distrib by dash'
+Adding 'diversion of /bin/sh to /bin/sh.distrib by bash'
+Removing 'diversion of /usr/share/man/man1/sh.1.gz to /usr/share/man/man1/sh.distrib.1.gz by dash'
+Adding 'diversion of /usr/share/man/man1/sh.1.gz to /usr/share/man/man1/sh.distrib.1.gz by 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/59747/tmp/hooks/D01_modify_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -159,7 +171,7 @@
 Get: 91 http://deb.debian.org/debian buster/main i386 libtext-glob-perl all 0.10-1 [8362 B]
 Get: 92 http://deb.debian.org/debian buster/main i386 libfile-find-rule-perl all 0.34-1 [30.6 kB]
 Get: 93 http://deb.debian.org/debian buster/main i386 dh-elpa all 1.16 [32.8 kB]
-Fetched 42.2 MB in 17s (2502 kB/s)
+Fetched 42.2 MB in 1s (70.7 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package install-info.
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(Reading database ... 19231 files and directories currently installed.)
@@ -566,7 +578,7 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/super-save-el-0.3.0/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" HOME="/nonexistent/first-build" dpkg-buildpackage -us -uc -b
+I: Running cd /build/super-save-el-0.3.0/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path" HOME="/nonexistent/second-build" dpkg-buildpackage -us -uc -b
 dpkg-buildpackage: info: source package super-save-el
 dpkg-buildpackage: info: source version 0.3.0-1
 dpkg-buildpackage: info: source distribution unstable
@@ -609,12 +621,14 @@
  dpkg-source --after-build .
 dpkg-buildpackage: info: binary-only upload (no source included)
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/59747/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/59747/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/20704 and its subdirectories
-I: Current time: Fri Mar  6 08:30:00 -12 2020
-I: pbuilder-time-stamp: 1583526600
+I: removing directory /srv/workspace/pbuilder/59747 and its subdirectories
+I: Current time: Fri Apr  9 16:53:23 +14 2021
+I: pbuilder-time-stamp: 1617936803