Diff of the two buildlogs:

--
--- b1/build.log	2023-04-14 07:20:31.960442763 +0000
+++ b2/build.log	2023-04-14 07:22:36.522912036 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu May 16 01:41:20 -12 2024
-I: pbuilder-time-stamp: 1715866880
+I: Current time: Fri Apr 14 21:20:35 +14 2023
+I: pbuilder-time-stamp: 1681456835
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/bookworm-reproducible-base.tgz]
 I: copying local configuration
@@ -16,7 +16,7 @@
 I: copying [./golang-github-jcmturner-rpc.v2_2.0.3.orig.tar.gz]
 I: copying [./golang-github-jcmturner-rpc.v2_2.0.3-2.debian.tar.xz]
 I: Extracting source
-gpgv: Signature made Wed Dec  7 03:07:12 2022 -12
+gpgv: Signature made Thu Dec  8 05:07:12 2022 +14
 gpgv:                using RSA key BA4EF9C84DF96D37D8A1E2D412F4D21C8F6A63C8
 gpgv:                issuer "matthew@debian.org"
 gpgv: Can't check signature: No public key
@@ -28,11 +28,20 @@
 dpkg-source: info: applying auto-gitignore
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/8788/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/8742/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink14-arm64.
+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
+lrwxrwxrwx 1 root root 4 Jan  6 03:20 /bin/sh -> dash
+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/8742/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/8742/tmp/hooks/D02_print_environment starting
 I: set
   BUILDDIR='/build'
-  BUILDUSERGECOS='first user,first room,first work-phone,first home-phone,first other'
-  BUILDUSERNAME='pbuilder1'
+  BUILDUSERGECOS='second user,second room,second work-phone,second home-phone,second other'
+  BUILDUSERNAME='pbuilder2'
   BUILD_ARCH='arm64'
   DEBIAN_FRONTEND='noninteractive'
   DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=8'
@@ -42,38 +51,38 @@
   IFS=' 	
   '
   LANG='C'
-  LANGUAGE='en_US:en'
+  LANGUAGE='nl_BE:nl'
   LC_ALL='C'
   MAIL='/var/mail/root'
   OPTIND='1'
-  PATH='/usr/sbin:/usr/bin:/sbin:/bin:/usr/games'
+  PATH='/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path'
   PBCURRENTCOMMANDLINEOPERATION='build'
   PBUILDER_OPERATION='build'
   PBUILDER_PKGDATADIR='/usr/share/pbuilder'
   PBUILDER_PKGLIBDIR='/usr/lib/pbuilder'
   PBUILDER_SYSCONFDIR='/etc'
-  PPID='8788'
+  PPID='8742'
   PS1='# '
   PS2='> '
   PS4='+ '
   PWD='/'
   SHELL='/bin/bash'
   SHLVL='2'
-  SUDO_COMMAND='/usr/bin/timeout -k 18.1h 18h /usr/bin/ionice -c 3 /usr/bin/nice /usr/sbin/pbuilder --build --configfile /srv/reproducible-results/rbuild-debian/r-b-build.atqlhRkj/pbuilderrc_rIjt --distribution bookworm --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.atqlhRkj/b1 --logfile b1/build.log golang-github-jcmturner-rpc.v2_2.0.3-2.dsc'
+  SUDO_COMMAND='/usr/bin/timeout -k 24.1h 24h /usr/bin/ionice -c 3 /usr/bin/nice -n 11 /usr/bin/unshare --uts -- /usr/sbin/pbuilder --build --configfile /srv/reproducible-results/rbuild-debian/r-b-build.atqlhRkj/pbuilderrc_dKGs --distribution bookworm --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.atqlhRkj/b2 --logfile b2/build.log --extrapackages usrmerge golang-github-jcmturner-rpc.v2_2.0.3-2.dsc'
   SUDO_GID='117'
   SUDO_UID='110'
   SUDO_USER='jenkins'
   TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
+  TZ='/usr/share/zoneinfo/Etc/GMT-14'
   USER='root'
   USERNAME='root'
   _='/usr/bin/systemd-run'
   http_proxy='http://192.168.101.16:3128'
 I: uname -a
-  Linux codethink13-arm64 4.15.0-208-generic #220-Ubuntu SMP Mon Mar 20 14:28:12 UTC 2023 aarch64 GNU/Linux
+  Linux i-capture-the-hostname 4.15.0-208-generic #220-Ubuntu SMP Mon Mar 20 14:28:12 UTC 2023 aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 May 13 04:48 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/8788/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Apr 14 00:50 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/8742/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -161,7 +170,7 @@
 Get: 42 http://deb.debian.org/debian bookworm/main arm64 golang-golang-x-sys-dev all 0.3.0-1 [393 kB]
 Get: 43 http://deb.debian.org/debian bookworm/main arm64 golang-golang-x-text-dev all 0.7.0-1 [3863 kB]
 Get: 44 http://deb.debian.org/debian bookworm/main arm64 golang-golang-x-net-dev all 1:0.7.0+dfsg-1 [731 kB]
-Fetched 98.5 MB in 5s (18.8 MB/s)
+Fetched 98.5 MB in 2s (52.4 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package sensible-utils.
 (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19616 files and directories currently installed.)
@@ -351,8 +360,17 @@
 Writing extended state information...
 Building tag database...
  -> Finished parsing the build-deps
+Reading package lists...
+Building dependency tree...
+Reading state information...
+usrmerge is already the newest version (35).
+0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/golang-github-jcmturner-rpc.v2-2.0.3/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" HOME="/nonexistent/first-build" dpkg-buildpackage -us -uc -b && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" HOME="/nonexistent/first-build" dpkg-genchanges -S  > ../golang-github-jcmturner-rpc.v2_2.0.3-2_source.changes
+I: user script /srv/workspace/pbuilder/8742/tmp/hooks/A99_set_merged_usr starting
+Re-configuring usrmerge...
+I: user script /srv/workspace/pbuilder/8742/tmp/hooks/A99_set_merged_usr finished
+hostname: Temporary failure in name resolution
+I: Running cd /build/golang-github-jcmturner-rpc.v2-2.0.3/ && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path" HOME="/nonexistent/second-build" dpkg-buildpackage -us -uc -b && env PATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/i/capture/the/path" HOME="/nonexistent/second-build" dpkg-genchanges -S  > ../golang-github-jcmturner-rpc.v2_2.0.3-2_source.changes
 dpkg-buildpackage: info: source package golang-github-jcmturner-rpc.v2
 dpkg-buildpackage: info: source version 2.0.3-2
 dpkg-buildpackage: info: source distribution unstable
@@ -373,21 +391,21 @@
 	cd _build && go install -trimpath -v -p 8 github.com/jcmturner/rpc/examples github.com/jcmturner/rpc/mstypes github.com/jcmturner/rpc/ndr github.com/jcmturner/rpc/v2/examples github.com/jcmturner/rpc/v2/mstypes github.com/jcmturner/rpc/v2/ndr
 internal/goarch
 internal/unsafeheader
-internal/goos
 internal/goexperiment
+internal/goos
 internal/race
 internal/cpu
-unicode/utf8
-internal/abi
-unicode
 runtime/internal/syscall
 sync/atomic
+unicode
+unicode/utf8
+math/bits
+internal/abi
 runtime/internal/math
 runtime/internal/sys
-math/bits
 internal/itoa
-internal/bytealg
 runtime/internal/atomic
+internal/bytealg
 math
 runtime
 internal/reflectlite
@@ -395,10 +413,10 @@
 internal/testlog
 errors
 sort
+io
 strconv
 internal/oserror
 internal/safefilepath
-io
 path
 syscall
 bytes
@@ -406,28 +424,28 @@
 reflect
 bufio
 internal/syscall/unix
-internal/syscall/execenv
 time
+internal/syscall/execenv
 internal/poll
 io/fs
 os
-encoding/binary
 internal/fmtsort
+encoding/binary
 fmt
 encoding/hex
 github.com/jcmturner/rpc/ndr
-golang.org/x/net/http2/hpack
 github.com/jcmturner/rpc/v2/ndr
+golang.org/x/net/http2/hpack
 github.com/jcmturner/rpc/v2/mstypes
 github.com/jcmturner/rpc/mstypes
-github.com/jcmturner/rpc/v2/examples
 github.com/jcmturner/rpc/examples
+github.com/jcmturner/rpc/v2/examples
    dh_auto_test -O--builddirectory=_build -O--buildsystem=golang
 	cd _build && go test -vet=off -v -p 8 github.com/jcmturner/rpc/examples github.com/jcmturner/rpc/mstypes github.com/jcmturner/rpc/ndr github.com/jcmturner/rpc/v2/examples github.com/jcmturner/rpc/v2/mstypes github.com/jcmturner/rpc/v2/ndr
 === RUN   TestExample_KerbValidationInfo
---- PASS: TestExample_KerbValidationInfo (0.02s)
+--- PASS: TestExample_KerbValidationInfo (0.00s)
 PASS
-ok  	github.com/jcmturner/rpc/examples	0.044s
+ok  	github.com/jcmturner/rpc/examples	0.066s
 === RUN   Test_TMP
     claims_test.go:37: test:  flate: corrupt input before offset 5
     claims_test.go:39: 96 1
@@ -449,11 +467,11 @@
 === RUN   Test_RPCUnicodeString
 --- PASS: Test_RPCUnicodeString (0.00s)
 === RUN   Test_RPCSIDDecode
---- PASS: Test_RPCSIDDecode (0.00s)
+--- PASS: Test_RPCSIDDecode (0.01s)
 === CONT  TestFileTime
 --- PASS: TestFileTime (0.00s)
 PASS
-ok  	github.com/jcmturner/rpc/mstypes	0.046s
+ok  	github.com/jcmturner/rpc/mstypes	0.041s
 === RUN   TestParseDimensions
 --- PASS: TestParseDimensions (0.00s)
 === RUN   TestMakeSubSlices
@@ -515,11 +533,11 @@
 === RUN   Test_readUnionNonEncapsulated
 --- PASS: Test_readUnionNonEncapsulated (0.00s)
 PASS
-ok  	github.com/jcmturner/rpc/ndr	0.047s
+ok  	github.com/jcmturner/rpc/ndr	0.022s
 === RUN   TestExample_KerbValidationInfo
---- PASS: TestExample_KerbValidationInfo (0.00s)
+--- PASS: TestExample_KerbValidationInfo (0.04s)
 PASS
-ok  	github.com/jcmturner/rpc/v2/examples	0.033s
+ok  	github.com/jcmturner/rpc/v2/examples	0.069s
 === RUN   Test_TMP
     claims_test.go:37: test:  flate: corrupt input before offset 5
     claims_test.go:39: 96 1
@@ -529,7 +547,7 @@
 === RUN   Test_ClientClaimsMultiValueUint_Unmarshal
 --- PASS: Test_ClientClaimsMultiValueUint_Unmarshal (0.00s)
 === RUN   Test_ClientClaimsInt_Unmarshal
---- PASS: Test_ClientClaimsInt_Unmarshal (0.00s)
+--- PASS: Test_ClientClaimsInt_Unmarshal (0.01s)
 === RUN   Test_ClientClaimsMultiValueStr_Unmarshal
 --- PASS: Test_ClientClaimsMultiValueStr_Unmarshal (0.00s)
 === RUN   Test_ClientClaimsInfoMultiEntry_Unmarshal
@@ -541,11 +559,11 @@
 === RUN   Test_RPCUnicodeString
 --- PASS: Test_RPCUnicodeString (0.00s)
 === RUN   Test_RPCSIDDecode
---- PASS: Test_RPCSIDDecode (0.02s)
+--- PASS: Test_RPCSIDDecode (0.00s)
 === CONT  TestFileTime
 --- PASS: TestFileTime (0.00s)
 PASS
-ok  	github.com/jcmturner/rpc/v2/mstypes	0.090s
+ok  	github.com/jcmturner/rpc/v2/mstypes	0.072s
 === RUN   TestParseDimensions
 --- PASS: TestParseDimensions (0.00s)
 === RUN   TestMakeSubSlices
@@ -567,7 +585,7 @@
 === RUN   TestReadUniDimensionalConformantVaryingArray
 --- PASS: TestReadUniDimensionalConformantVaryingArray (0.00s)
 === RUN   TestReadMultiDimensionalConformantVaryingArray
---- PASS: TestReadMultiDimensionalConformantVaryingArray (0.00s)
+--- PASS: TestReadMultiDimensionalConformantVaryingArray (0.01s)
 === RUN   TestReadCommonHeader
 --- PASS: TestReadCommonHeader (0.00s)
 === RUN   TestReadPrivateHeader
@@ -597,7 +615,7 @@
 === RUN   Test_readNonConformantStringMultiDimensionalArray
 --- PASS: Test_readNonConformantStringMultiDimensionalArray (0.00s)
 === RUN   Test_readFixedStringUniDimensionalArray
---- PASS: Test_readFixedStringUniDimensionalArray (0.01s)
+--- PASS: Test_readFixedStringUniDimensionalArray (0.00s)
 === RUN   Test_readFixedStringMultiDimensionalArray
 --- PASS: Test_readFixedStringMultiDimensionalArray (0.00s)
 === RUN   TestParseTags
@@ -607,7 +625,7 @@
 === RUN   Test_readUnionNonEncapsulated
 --- PASS: Test_readUnionNonEncapsulated (0.00s)
 PASS
-ok  	github.com/jcmturner/rpc/v2/ndr	0.088s
+ok  	github.com/jcmturner/rpc/v2/ndr	0.072s
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--builddirectory=_build -O--buildsystem=golang
    dh_prep -O--builddirectory=_build -O--buildsystem=golang
@@ -634,12 +652,14 @@
 dpkg-buildpackage: info: binary-only upload (no source included)
 dpkg-genchanges: info: not including original source code in upload
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/8742/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/8742/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/8788 and its subdirectories
-I: Current time: Thu May 16 01:43:30 -12 2024
-I: pbuilder-time-stamp: 1715867010
+I: removing directory /srv/workspace/pbuilder/8742 and its subdirectories
+I: Current time: Fri Apr 14 21:22:35 +14 2023
+I: pbuilder-time-stamp: 1681456955