Diff of the two buildlogs:

--
--- b1/build.log	2020-04-16 16:00:01.799145243 +0000
+++ b2/build.log	2020-04-16 16:00:35.838477979 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu Apr 16 03:52:02 -12 2020
-I: pbuilder-time-stamp: 1587052322
+I: Current time: Thu May 20 12:23:02 +14 2021
+I: pbuilder-time-stamp: 1621462982
 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 Jul 20 22:42:22 2018 -12
+gpgv: Signature made Sun Jul 22 00:42:22 2018 +14
 gpgv:                using RSA key 142421B19AD4A95996F95072EA2500B412C59ACF
 gpgv: Can't check signature: No public key
 dpkg-source: warning: failed to verify signature on ./golang-github-jimstudt-http-authentication_0.0~git20140401.3eca13d-1.dsc
@@ -29,6 +29,18 @@
 dpkg-source: info: applying fix-http-test.patch
 I: using fakeroot in build.
 I: Installing the build-deps
+I: user script /srv/workspace/pbuilder/18680/tmp/hooks/D01_modify_environment starting
+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/18680/tmp/hooks/D01_modify_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -107,7 +119,7 @@
 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 34s (2202 kB/s)
+Fetched 74.2 MB in 1s (59.0 MB/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.)
@@ -286,7 +298,7 @@
 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-jimstudt-http-authentication-0.0~git20140401.3eca13d/ && 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-jimstudt-http-authentication-0.0~git20140401.3eca13d/ && 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-jimstudt-http-authentication
 dpkg-buildpackage: info: source version 0.0~git20140401.3eca13d-1
 dpkg-buildpackage: info: source distribution unstable
@@ -304,26 +316,26 @@
    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-jimstudt-http-authentication-0.0\~git20140401.3eca13d/obj-i686-linux-gnu/src\" -asmflags=all=\"-trimpath=/build/golang-github-jimstudt-http-authentication-0.0\~git20140401.3eca13d/obj-i686-linux-gnu/src\" -v -p 10 github.com/jimstudt/http-authentication/basic github.com/jimstudt/http-authentication/digest
+	cd obj-i686-linux-gnu && go install -gcflags=all=\"-trimpath=/build/golang-github-jimstudt-http-authentication-0.0\~git20140401.3eca13d/obj-i686-linux-gnu/src\" -asmflags=all=\"-trimpath=/build/golang-github-jimstudt-http-authentication-0.0\~git20140401.3eca13d/obj-i686-linux-gnu/src\" -v -p 18 github.com/jimstudt/http-authentication/basic github.com/jimstudt/http-authentication/digest
 errors
+vendor/golang_org/x/crypto/cryptobyte/asn1
+crypto/subtle
 math/bits
-runtime/internal/atomic
-sync/atomic
 internal/race
-unicode/utf8
+crypto/internal/subtle
+container/list
+internal/nettrace
 internal/cpu
+unicode/utf8
+runtime/internal/atomic
+vendor/golang_org/x/net/dns/dnsmessage
+sync/atomic
+runtime/cgo
 runtime/internal/sys
-crypto/subtle
 unicode
-container/list
-vendor/golang_org/x/crypto/cryptobyte/asn1
-vendor/golang_org/x/net/dns/dnsmessage
-crypto/internal/subtle
-math
-internal/nettrace
-internal/bytealg
 internal/testlog
-runtime/cgo
+internal/bytealg
+math
 runtime
 strconv
 crypto/rc4
@@ -333,21 +345,21 @@
 math/rand
 reflect
 syscall
-bytes
 hash
-crypto/cipher
-strings
+bytes
 crypto/internal/randutil
+strings
+crypto/cipher
 crypto
-hash/crc32
 crypto/hmac
+hash/crc32
 crypto/sha512
-crypto/sha256
 crypto/md5
 crypto/sha1
+crypto/sha256
 crypto/aes
-bufio
 vendor/golang_org/x/text/transform
+bufio
 path
 internal/syscall/unix
 time
@@ -355,45 +367,45 @@
 encoding/binary
 sort
 os
-encoding/base64
 vendor/golang_org/x/crypto/internal/chacha20
+encoding/base64
 vendor/golang_org/x/crypto/poly1305
 crypto/des
 vendor/golang_org/x/crypto/curve25519
 vendor/golang_org/x/crypto/chacha20poly1305
 encoding/pem
-path/filepath
-os/signal
 runtime/debug
+os/signal
+path/filepath
 fmt
 io/ioutil
-context
 encoding/hex
-net/url
-log
+context
 mime/quotedprintable
-vendor/golang_org/x/net/http2/hpack
 mime
+net/url
+vendor/golang_org/x/net/http2/hpack
+log
 compress/flate
-math/big
-vendor/golang_org/x/text/unicode/norm
 net/http/internal
-net
+vendor/golang_org/x/text/unicode/norm
 encoding/csv
-vendor/golang_org/x/text/unicode/bidi
 flag
+math/big
+vendor/golang_org/x/text/unicode/bidi
 runtime/trace
+net
 testing
-compress/gzip
 vendor/golang_org/x/text/secure/bidirule
+compress/gzip
 vendor/golang_org/x/net/idna
 crypto/rand
 crypto/dsa
 crypto/elliptic
 encoding/asn1
 crypto/rsa
-crypto/ecdsa
 crypto/x509/pkix
+crypto/ecdsa
 vendor/golang_org/x/crypto/cryptobyte
 vendor/golang_org/x/net/http/httpproxy
 net/textproto
@@ -406,31 +418,31 @@
 github.com/jimstudt/http-authentication/basic
 github.com/jimstudt/http-authentication/digest
    dh_auto_test -O--buildsystem=golang
-	cd obj-i686-linux-gnu && go test -vet=off -v -p 10 github.com/jimstudt/http-authentication/basic github.com/jimstudt/http-authentication/digest
+	cd obj-i686-linux-gnu && go test -vet=off -v -p 18 github.com/jimstudt/http-authentication/basic github.com/jimstudt/http-authentication/digest
 === RUN   Test_Bcrypt
 --- PASS: Test_Bcrypt (0.00s)
 === RUN   Test_PlainFile
 --- PASS: Test_PlainFile (0.00s)
 === RUN   Test_ShaFile
---- PASS: Test_ShaFile (0.01s)
+--- PASS: Test_ShaFile (0.00s)
 === RUN   Test_Md5File
---- PASS: Test_Md5File (0.16s)
+--- PASS: Test_Md5File (0.11s)
 === RUN   Test_apr1Md5
---- PASS: Test_apr1Md5 (0.07s)
+--- PASS: Test_apr1Md5 (0.06s)
 === RUN   Test_Md5
---- PASS: Test_Md5 (0.14s)
+--- PASS: Test_Md5 (0.11s)
 === RUN   Test_Plain
 --- PASS: Test_Plain (0.00s)
 === RUN   Test_Sha
 --- PASS: Test_Sha (0.00s)
 PASS
-ok  	github.com/jimstudt/http-authentication/basic	0.393s
+ok  	github.com/jimstudt/http-authentication/basic	0.285s
 === RUN   Test_simpleNonce
 --- PASS: Test_simpleNonce (0.00s)
 === RUN   Test_evaluateDigest
 --- PASS: Test_evaluateDigest (0.00s)
 PASS
-ok  	github.com/jimstudt/http-authentication/digest	0.014s
+ok  	github.com/jimstudt/http-authentication/digest	0.004s
    create-stamp debian/debhelper-build-stamp
  fakeroot debian/rules binary
 dh binary --buildsystem=golang --with=golang
@@ -458,12 +470,14 @@
  dpkg-source --after-build .
 dpkg-buildpackage: info: binary-only upload (no source included)
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/18680/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/18680/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/26603 and its subdirectories
-I: Current time: Thu Apr 16 04:00:01 -12 2020
-I: pbuilder-time-stamp: 1587052801
+I: removing directory /srv/workspace/pbuilder/18680 and its subdirectories
+I: Current time: Thu May 20 12:23:34 +14 2021
+I: pbuilder-time-stamp: 1621463014