Diff of the two buildlogs:

--
--- b1/build.log	2020-03-20 21:41:20.191493255 +0000
+++ b2/build.log	2020-03-20 21:48:00.443586067 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu Apr 22 16:03:40 -12 2021
-I: pbuilder-time-stamp: 1619150620
+I: Current time: Sat Mar 21 11:41:22 +14 2020
+I: pbuilder-time-stamp: 1584740482
 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 Wed Oct  3 07:09:15 2018 -12
+gpgv: Signature made Thu Oct  4 09:09:15 2018 +14
 gpgv:                using RSA key 27D73CA5F5B5D7E01A5136F5D7A86780CC64403C
 gpgv:                issuer "iliastsi@debian.org"
 gpgv: Can't check signature: No public key
@@ -28,6 +28,18 @@
 dpkg-source: info: unpacking only_0.0.6.0-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
+I: user script /srv/workspace/pbuilder/9798/tmp/hooks/D01_modify_environment starting
+disorder-fs debug: Running on profitbricks-build12-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/9798/tmp/hooks/D01_modify_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -139,7 +151,7 @@
 Get: 64 http://deb.debian.org/debian buster/main i386 libghc-regex-base-dev i386 0.93.2-13+b2 [67.3 kB]
 Get: 65 http://deb.debian.org/debian buster/main i386 libghc-regex-posix-dev i386 0.95.2-11+b2 [132 kB]
 Get: 66 http://deb.debian.org/debian buster/main i386 libghc-regex-compat-dev i386 0.95.1-12+b2 [25.5 kB]
-Fetched 136 MB in 2s (83.9 MB/s)
+Fetched 136 MB in 20s (6920 kB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libbsd0:i386.
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(Reading database ... 19231 files and directories currently installed.)
@@ -423,7 +435,7 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/only-0.0.6.0/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" HOME="/nonexistent/first-build" dpkg-buildpackage -us -uc -b
+I: Running cd /build/only-0.0.6.0/ && 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 only
 dpkg-buildpackage: info: source version 0.0.6.0-2
 dpkg-buildpackage: info: source distribution unstable
@@ -585,12 +597,14 @@
  dpkg-source --after-build .
 dpkg-buildpackage: info: binary-only upload (no source included)
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/9798/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/9798/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/65306 and its subdirectories
-I: Current time: Thu Apr 22 16:04:19 -12 2021
-I: pbuilder-time-stamp: 1619150659
+I: removing directory /srv/workspace/pbuilder/9798 and its subdirectories
+I: Current time: Sat Mar 21 11:47:59 +14 2020
+I: pbuilder-time-stamp: 1584740879