Diff of the two buildlogs:

--
--- b1/build.log	2020-04-01 23:50:21.291794506 +0000
+++ b2/build.log	2020-04-01 23:50:57.031096675 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Apr  1 11:45:05 -12 2020
-I: pbuilder-time-stamp: 1585784705
+I: Current time: Wed May  5 20:13:22 +14 2021
+I: pbuilder-time-stamp: 1620195202
 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 Mar  8 10:16:37 2017 -12
+gpgv: Signature made Thu Mar  9 12:16:37 2017 +14
 gpgv:                using RSA key B24CA63F6EBBE84D
 gpgv: Can't check signature: No public key
 dpkg-source: warning: failed to verify signature on ./golang-github-go-openapi-analysis_0.0~git20160815.0.b44dc87-1.dsc
@@ -27,6 +27,18 @@
 dpkg-source: info: unpacking golang-github-go-openapi-analysis_0.0~git20160815.0.b44dc87-1.debian.tar.xz
 I: using fakeroot in build.
 I: Installing the build-deps
+I: user script /srv/workspace/pbuilder/43304/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/43304/tmp/hooks/D01_modify_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -133,7 +145,7 @@
 Get: 57 http://deb.debian.org/debian buster/main i386 golang-gopkg-check.v1-dev all 0.0+git20180628.788fd78-1 [31.6 kB]
 Get: 58 http://deb.debian.org/debian buster/main i386 golang-gopkg-yaml.v2-dev all 2.2.2-1 [58.9 kB]
 Get: 59 http://deb.debian.org/debian buster/main i386 golang-github-go-openapi-spec-dev all 1:0.0~git20160808.0.6aced65-2 [52.1 kB]
-Fetched 79.9 MB in 1min 15s (1070 kB/s)
+Fetched 79.9 MB in 1s (62.6 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.)
@@ -392,7 +404,7 @@
 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-go-openapi-analysis-0.0~git20160815.0.b44dc87/ && 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-go-openapi-analysis-0.0~git20160815.0.b44dc87/ && 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-go-openapi-analysis
 dpkg-buildpackage: info: source version 0.0~git20160815.0.b44dc87-1
 dpkg-buildpackage: info: source distribution unstable
@@ -410,28 +422,28 @@
    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-go-openapi-analysis-0.0\~git20160815.0.b44dc87/obj-i686-linux-gnu/src\" -asmflags=all=\"-trimpath=/build/golang-github-go-openapi-analysis-0.0\~git20160815.0.b44dc87/obj-i686-linux-gnu/src\" -v -p 10 github.com/go-openapi/analysis
-unicode
-unicode/utf8
-math/bits
+	cd obj-i686-linux-gnu && go install -gcflags=all=\"-trimpath=/build/golang-github-go-openapi-analysis-0.0\~git20160815.0.b44dc87/obj-i686-linux-gnu/src\" -asmflags=all=\"-trimpath=/build/golang-github-go-openapi-analysis-0.0\~git20160815.0.b44dc87/obj-i686-linux-gnu/src\" -v -p 18 github.com/go-openapi/analysis
 errors
 internal/race
-internal/cpu
-runtime/internal/sys
+encoding
+math/bits
 runtime/internal/atomic
-sync/atomic
-math
 unicode/utf16
-encoding
 internal/nettrace
-vendor/golang_org/x/net/dns/dnsmessage
+unicode/utf8
 container/list
-runtime/cgo
+vendor/golang_org/x/crypto/cryptobyte/asn1
+unicode
 crypto/internal/subtle
+sync/atomic
 crypto/subtle
+vendor/golang_org/x/net/dns/dnsmessage
+runtime/cgo
+internal/cpu
+runtime/internal/sys
+math
 internal/testlog
 internal/bytealg
-vendor/golang_org/x/crypto/cryptobyte/asn1
 runtime
 strconv
 crypto/rc4
@@ -442,66 +454,66 @@
 reflect
 syscall
 github.com/mailru/easyjson/buffer
-bytes
-hash
-strings
 crypto/internal/randutil
+strings
+hash
 crypto/cipher
-crypto
-crypto/hmac
+bytes
 hash/crc32
-crypto/md5
+crypto/hmac
+crypto
 crypto/sha512
+crypto/md5
 crypto/sha1
 crypto/sha256
 crypto/aes
-bufio
 vendor/golang_org/x/text/transform
 golang.org/x/text/transform
+bufio
 path
 internal/syscall/unix
 time
 internal/poll
 encoding/binary
 sort
-regexp/syntax
 os
-crypto/des
+regexp/syntax
+encoding/base64
 vendor/golang_org/x/crypto/internal/chacha20
 vendor/golang_org/x/crypto/poly1305
+crypto/des
 vendor/golang_org/x/crypto/curve25519
-encoding/base64
 vendor/golang_org/x/crypto/chacha20poly1305
 github.com/mailru/easyjson/jwriter
 encoding/pem
-fmt
 path/filepath
-regexp
+fmt
 io/ioutil
-vendor/golang_org/x/net/http2/hpack
+regexp
 context
 github.com/mailru/easyjson/jlexer
-log
+encoding/json
 encoding/hex
-compress/flate
+log
 net/url
-encoding/json
-vendor/golang_org/x/text/unicode/norm
+vendor/golang_org/x/net/http2/hpack
+compress/flate
+net/http/internal
 math/big
-vendor/golang_org/x/text/unicode/bidi
 mime
+vendor/golang_org/x/text/unicode/norm
 mime/quotedprintable
-net/http/internal
-github.com/PuerkitoBio/urlesc
-golang.org/x/text/unicode/bidi
+golang.org/x/text/width
 golang.org/x/text/unicode/norm
+vendor/golang_org/x/text/unicode/bidi
+golang.org/x/text/unicode/bidi
 net
-golang.org/x/text/width
+github.com/PuerkitoBio/urlesc
+golang.org/x/text/secure/bidirule
 vendor/golang_org/x/text/secure/bidirule
 compress/gzip
-vendor/golang_org/x/net/idna
-golang.org/x/text/secure/bidirule
 golang.org/x/net/idna
+vendor/golang_org/x/net/idna
 github.com/PuerkitoBio/purell
 crypto/dsa
 crypto/rand
@@ -554,12 +566,14 @@
  dpkg-source --after-build .
 dpkg-buildpackage: info: binary-only upload (no source included)
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/43304/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/43304/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/19335 and its subdirectories
-I: Current time: Wed Apr  1 11:50:20 -12 2020
-I: pbuilder-time-stamp: 1585785020
+I: removing directory /srv/workspace/pbuilder/43304 and its subdirectories
+I: Current time: Wed May  5 20:13:56 +14 2021
+I: pbuilder-time-stamp: 1620195236