Diff of the two buildlogs:

--
--- b1/build.log	2020-04-16 22:06:43.728655618 +0000
+++ b2/build.log	2020-04-16 22:07:22.555882933 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu Apr 16 10:00:33 -12 2020
-I: pbuilder-time-stamp: 1587074433
+I: Current time: Thu May 20 18:29:44 +14 2021
+I: pbuilder-time-stamp: 1621484984
 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 Tue Aug  8 21:31:48 2017 -12
+gpgv: Signature made Wed Aug  9 23:31:48 2017 +14
 gpgv:                using RSA key 3FC37391FECDD3CB550171216606027F6437124C
 gpgv: Can't check signature: No public key
 dpkg-source: warning: failed to verify signature on ./golang-github-xeipuuv-gojsonschema_0.0~git20170210.0.6b67b3f-2.dsc
@@ -30,6 +30,18 @@
 dpkg-source: info: applying testdata.patch
 I: using fakeroot in build.
 I: Installing the build-deps
+I: user script /srv/workspace/pbuilder/17406/tmp/hooks/D01_modify_environment starting
+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/17406/tmp/hooks/D01_modify_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -118,7 +130,7 @@
 Get: 43 http://deb.debian.org/debian buster/main i386 golang-github-stretchr-testify-dev all 1.3.0+ds-1 [49.8 kB]
 Get: 44 http://deb.debian.org/debian buster/main i386 golang-github-xeipuuv-gojsonpointer-dev all 0.0~git20151027.0.e0fe6f6-2 [4620 B]
 Get: 45 http://deb.debian.org/debian buster/main i386 golang-github-xeipuuv-gojsonreference-dev all 0.0~git20150808.0.e02fc20-2 [4592 B]
-Fetched 74.4 MB in 1min 7s (1105 kB/s)
+Fetched 74.4 MB in 2s (31.3 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.)
@@ -321,7 +333,7 @@
 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-xeipuuv-gojsonschema-0.0~git20170210.0.6b67b3f/ && 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-xeipuuv-gojsonschema-0.0~git20170210.0.6b67b3f/ && 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-xeipuuv-gojsonschema
 dpkg-buildpackage: info: source version 0.0~git20170210.0.6b67b3f-2
 dpkg-buildpackage: info: source distribution unstable
@@ -339,95 +351,95 @@
    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-xeipuuv-gojsonschema-0.0\~git20170210.0.6b67b3f/obj-i686-linux-gnu/src\" -asmflags=all=\"-trimpath=/build/golang-github-xeipuuv-gojsonschema-0.0\~git20170210.0.6b67b3f/obj-i686-linux-gnu/src\" -v -p 10 github.com/xeipuuv/gojsonschema
-unicode/utf8
+	cd obj-i686-linux-gnu && go install -gcflags=all=\"-trimpath=/build/golang-github-xeipuuv-gojsonschema-0.0\~git20170210.0.6b67b3f/obj-i686-linux-gnu/src\" -asmflags=all=\"-trimpath=/build/golang-github-xeipuuv-gojsonschema-0.0\~git20170210.0.6b67b3f/obj-i686-linux-gnu/src\" -v -p 18 github.com/xeipuuv/gojsonschema
+unicode/utf16
+crypto/subtle
 errors
+crypto/internal/subtle
+container/list
+unicode/utf8
 encoding
 unicode
+vendor/golang_org/x/crypto/cryptobyte/asn1
+internal/nettrace
+vendor/golang_org/x/net/dns/dnsmessage
+runtime/internal/sys
+runtime/internal/atomic
 internal/race
 math/bits
 sync/atomic
 internal/cpu
-runtime/internal/atomic
-runtime/internal/sys
-internal/nettrace
-unicode/utf16
-vendor/golang_org/x/net/dns/dnsmessage
+runtime/cgo
+math
 internal/testlog
 internal/bytealg
-container/list
-math
-crypto/internal/subtle
-crypto/subtle
-vendor/golang_org/x/crypto/cryptobyte/asn1
-runtime/cgo
 runtime
 strconv
 crypto/rc4
 sync
 internal/singleflight
 io
-reflect
 math/rand
+reflect
 syscall
-strings
-crypto/internal/randutil
 hash
 bytes
+crypto/internal/randutil
+strings
 crypto/cipher
-crypto
 crypto/hmac
 hash/crc32
+crypto
 crypto/sha512
 crypto/md5
-crypto/sha256
 crypto/sha1
+crypto/sha256
 crypto/aes
-path
-bufio
 vendor/golang_org/x/text/transform
+bufio
+path
 internal/syscall/unix
 time
+internal/poll
 encoding/binary
 sort
-internal/poll
+os
+regexp/syntax
 encoding/base64
+vendor/golang_org/x/crypto/poly1305
 crypto/des
-vendor/golang_org/x/crypto/curve25519
 vendor/golang_org/x/crypto/internal/chacha20
-vendor/golang_org/x/crypto/poly1305
-regexp/syntax
+vendor/golang_org/x/crypto/curve25519
 vendor/golang_org/x/crypto/chacha20poly1305
 encoding/pem
-os
-regexp
 path/filepath
 fmt
 io/ioutil
+regexp
 github.com/xeipuuv/gojsonpointer
 net/url
-compress/flate
 log
-encoding/hex
 context
-vendor/golang_org/x/net/http2/hpack
 encoding/json
-math/big
-vendor/golang_org/x/text/unicode/norm
-mime
 mime/quotedprintable
+encoding/hex
+mime
 net/http/internal
+vendor/golang_org/x/net/http2/hpack
+compress/flate
+text/template/parse
+vendor/golang_org/x/text/unicode/norm
+math/big
 vendor/golang_org/x/text/unicode/bidi
 net
-text/template/parse
-compress/gzip
 github.com/xeipuuv/gojsonreference
 vendor/golang_org/x/text/secure/bidirule
-vendor/golang_org/x/net/idna
+compress/gzip
 text/template
-crypto/rand
-crypto/dsa
+vendor/golang_org/x/net/idna
 encoding/asn1
+crypto/dsa
+crypto/rand
 crypto/elliptic
 crypto/rsa
 crypto/ecdsa
@@ -443,7 +455,7 @@
 net/http
 github.com/xeipuuv/gojsonschema
    dh_auto_test -O--buildsystem=golang
-	cd obj-i686-linux-gnu && go test -vet=off -v -p 10 github.com/xeipuuv/gojsonschema
+	cd obj-i686-linux-gnu && go test -vet=off -v -p 18 github.com/xeipuuv/gojsonschema
 === RUN   TestUUIDFormatCheckerIsFormat
 --- PASS: TestUUIDFormatCheckerIsFormat (0.00s)
 === RUN   TestJsonSchemaTestSuite
@@ -458,7 +470,7 @@
 === RUN   TestResultErrorFormatNumber
 --- PASS: TestResultErrorFormatNumber (0.00s)
 PASS
-ok  	github.com/xeipuuv/gojsonschema	0.020s
+ok  	github.com/xeipuuv/gojsonschema	0.005s
    create-stamp debian/debhelper-build-stamp
  fakeroot debian/rules binary
 dh binary --buildsystem=golang --with=golang
@@ -489,12 +501,14 @@
  dpkg-source --after-build .
 dpkg-buildpackage: info: binary-only upload (no source included)
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/17406/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/17406/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/20309 and its subdirectories
-I: Current time: Thu Apr 16 10:06:43 -12 2020
-I: pbuilder-time-stamp: 1587074803
+I: removing directory /srv/workspace/pbuilder/17406 and its subdirectories
+I: Current time: Thu May 20 18:30:20 +14 2021
+I: pbuilder-time-stamp: 1621485020