Diff of the two buildlogs:

--
--- b1/build.log	2020-04-02 00:07:49.811311689 +0000
+++ b2/build.log	2020-04-02 00:08:24.190639725 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Apr  1 12:00:45 -12 2020
-I: pbuilder-time-stamp: 1585785645
+I: Current time: Wed May  5 20:30:50 +14 2021
+I: pbuilder-time-stamp: 1620196250
 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 May 17 01:46:18 2017 -12
+gpgv: Signature made Thu May 18 03:46:18 2017 +14
 gpgv:                using RSA key 611F861BAE64C6C14A26522FA710823E33BDDA81
 gpgv: Can't check signature: No public key
 dpkg-source: warning: failed to verify signature on ./golang-github-pkg-profile_1.2.1-2.dsc
@@ -27,6 +27,18 @@
 dpkg-source: info: unpacking golang-github-pkg-profile_1.2.1-2.debian.tar.xz
 I: using fakeroot in build.
 I: Installing the build-deps
+I: user script /srv/workspace/pbuilder/50502/tmp/hooks/D01_modify_environment starting
+disorder-fs debug: Running on profitbricks-build6-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/50502/tmp/hooks/D01_modify_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -105,7 +117,7 @@
 Get: 37 http://deb.debian.org/debian buster/main i386 golang-src i386 2:1.11~1 [4348 B]
 Get: 38 http://deb.debian.org/debian buster/main i386 golang-go i386 2:1.11~1 [23.4 kB]
 Get: 39 http://deb.debian.org/debian buster/main i386 golang-any i386 2:1.11~1 [4472 B]
-Fetched 74.2 MB in 15s (4832 kB/s)
+Fetched 74.2 MB in 1s (80.3 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package libbsd0:i386.
 (Reading database ... 
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(Reading database ... 19231 files and directories currently installed.)
@@ -284,7 +296,7 @@
 fakeroot is already the newest version (1.23-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/golang-github-pkg-profile-1.2.1/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" HOME="/nonexistent/first-build" dpkg-buildpackage -us -uc -b
+I: Running cd /build/golang-github-pkg-profile-1.2.1/ && 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 golang-github-pkg-profile
 dpkg-buildpackage: info: source version 1.2.1-2
 dpkg-buildpackage: info: source distribution unstable
@@ -302,15 +314,15 @@
    dh_autoreconf -O--buildsystem=golang
    dh_auto_configure -O--buildsystem=golang
    dh_auto_build -O--buildsystem=golang
-	cd obj-i686-linux-gnu && go install -gcflags=all=\"-trimpath=/build/golang-github-pkg-profile-1.2.1/obj-i686-linux-gnu/src\" -asmflags=all=\"-trimpath=/build/golang-github-pkg-profile-1.2.1/obj-i686-linux-gnu/src\" -v -p 10 github.com/pkg/profile
-unicode/utf8
-internal/race
-math/bits
+	cd obj-i686-linux-gnu && go install -gcflags=all=\"-trimpath=/build/golang-github-pkg-profile-1.2.1/obj-i686-linux-gnu/src\" -asmflags=all=\"-trimpath=/build/golang-github-pkg-profile-1.2.1/obj-i686-linux-gnu/src\" -v -p 18 github.com/pkg/profile
 errors
+internal/race
+unicode/utf8
 internal/cpu
-unicode
-sync/atomic
+math/bits
 runtime/internal/atomic
+sync/atomic
+unicode
 runtime/internal/sys
 math
 internal/testlog
@@ -322,19 +334,19 @@
 reflect
 syscall
 hash
-strings
-text/tabwriter
 bytes
+text/tabwriter
+strings
 hash/crc32
 bufio
 internal/syscall/unix
 time
 internal/poll
-os
-sort
 encoding/binary
-path/filepath
+sort
+os
 os/signal
+path/filepath
 fmt
 io/ioutil
 log
@@ -345,9 +357,9 @@
 runtime/pprof
 github.com/pkg/profile
    dh_auto_test -O--buildsystem=golang
-	cd obj-i686-linux-gnu && go test -vet=off -v -p 10 github.com/pkg/profile
+	cd obj-i686-linux-gnu && go test -vet=off -v -p 18 github.com/pkg/profile
 === RUN   TestProfile
---- PASS: TestProfile (11.61s)
+--- PASS: TestProfile (4.13s)
     profile_test.go:200: default profile (cpu)
     profile_test.go:200: memory profile
     profile_test.go:200: memory profile (rate 2048)
@@ -361,7 +373,7 @@
 === RUN   TestValidateOutput
 --- PASS: TestValidateOutput (0.00s)
 PASS
-ok  	github.com/pkg/profile	11.622s
+ok  	github.com/pkg/profile	4.133s
    create-stamp debian/debhelper-build-stamp
  fakeroot debian/rules binary
 dh binary --buildsystem=golang --with=golang
@@ -396,12 +408,14 @@
  dpkg-source --after-build .
 dpkg-buildpackage: info: binary-only upload (no source included)
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/50502/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/50502/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/24446 and its subdirectories
-I: Current time: Wed Apr  1 12:07:49 -12 2020
-I: pbuilder-time-stamp: 1585786069
+I: removing directory /srv/workspace/pbuilder/50502 and its subdirectories
+I: Current time: Wed May  5 20:31:23 +14 2021
+I: pbuilder-time-stamp: 1620196283