Diff of the two buildlogs:

--
--- b1/build.log	2024-12-18 01:22:51.576391182 +0000
+++ b2/build.log	2024-12-18 01:25:20.697678024 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Tue Dec 17 13:08:17 -12 2024
-I: pbuilder-time-stamp: 1734484097
+I: Current time: Wed Dec 18 15:23:00 +14 2024
+I: pbuilder-time-stamp: 1734484980
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/trixie-reproducible-base.tgz]
 I: copying local configuration
@@ -25,52 +25,84 @@
 dpkg-source: info: unpacking golang-github-rickb777-date_1.20.1-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/1270/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/14077/tmp/hooks/D01_modify_environment starting
+debug: Running on virt32b.
+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
+'/bin/sh' -> '/bin/bash'
+lrwxrwxrwx 1 root root 9 Dec 18 01:23 /bin/sh -> /bin/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/14077/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/14077/tmp/hooks/D02_print_environment starting
 I: set
-  BUILDDIR='/build/reproducible-path'
-  BUILDUSERGECOS='first user,first room,first work-phone,first home-phone,first other'
-  BUILDUSERNAME='pbuilder1'
-  BUILD_ARCH='armhf'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=5 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='armhf'
+  BASH=/bin/sh
+  BASHOPTS=checkwinsize:cmdhist:complete_fullquote:extquote:force_fignore:globasciiranges:globskipdots:hostcomplete:interactive_comments:patsub_replacement:progcomp:promptvars:sourcepath
+  BASH_ALIASES=()
+  BASH_ARGC=()
+  BASH_ARGV=()
+  BASH_CMDS=()
+  BASH_LINENO=([0]="12" [1]="0")
+  BASH_LOADABLES_PATH=/usr/local/lib/bash:/usr/lib/bash:/opt/local/lib/bash:/usr/pkg/lib/bash:/opt/pkg/lib/bash:.
+  BASH_SOURCE=([0]="/tmp/hooks/D02_print_environment" [1]="/tmp/hooks/D02_print_environment")
+  BASH_VERSINFO=([0]="5" [1]="2" [2]="37" [3]="1" [4]="release" [5]="arm-unknown-linux-gnueabihf")
+  BASH_VERSION='5.2.37(1)-release'
+  BUILDDIR=/build/reproducible-path
+  BUILDUSERGECOS='second user,second room,second work-phone,second home-phone,second other'
+  BUILDUSERNAME=pbuilder2
+  BUILD_ARCH=armhf
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=4 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=arm
+  HOST_ARCH=armhf
   IFS=' 	
   '
-  INVOCATION_ID='1e7b3b664ff444f9a8b7a67bf9fd3dd2'
-  LANG='C'
-  LANGUAGE='en_US:en'
-  LC_ALL='C'
-  MAIL='/var/mail/root'
-  OPTIND='1'
-  PATH='/usr/sbin:/usr/bin:/sbin:/bin:/usr/games'
-  PBCURRENTCOMMANDLINEOPERATION='build'
-  PBUILDER_OPERATION='build'
-  PBUILDER_PKGDATADIR='/usr/share/pbuilder'
-  PBUILDER_PKGLIBDIR='/usr/lib/pbuilder'
-  PBUILDER_SYSCONFDIR='/etc'
-  PPID='1270'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=9bcba79443294f93a2f21888f7f32be8
+  LANG=C
+  LANGUAGE=it_CH:it
+  LC_ALL=C
+  MACHTYPE=arm-unknown-linux-gnueabihf
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnueabihf
+  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
+  PIPESTATUS=([0]="0")
+  POSIXLY_CORRECT=y
+  PPID=14077
   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.iaFLfLsO/pbuilderrc_R6kK --distribution trixie --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/trixie-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.iaFLfLsO/b1 --logfile b1/build.log golang-github-rickb777-date_1.20.1-1.dsc'
-  SUDO_GID='114'
-  SUDO_UID='109'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://10.0.0.15:3142/'
+  PWD=/
+  SHELL=/bin/bash
+  SHELLOPTS=braceexpand:errexit:hashall:interactive-comments:posix
+  SHLVL=3
+  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.iaFLfLsO/pbuilderrc_i2sJ --distribution trixie --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/trixie-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.iaFLfLsO/b2 --logfile b2/build.log golang-github-rickb777-date_1.20.1-1.dsc'
+  SUDO_GID=112
+  SUDO_UID=106
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://10.0.0.15:3142/
 I: uname -a
-  Linux ff64a 6.1.0-28-arm64 #1 SMP Debian 6.1.119-1 (2024-11-22) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-28-armmp-lpae #1 SMP Debian 6.1.119-1 (2024-11-22) armv7l GNU/Linux
 I: ls -l /bin
   lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/1270/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/14077/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -165,7 +197,7 @@
 Get: 45 http://deb.debian.org/debian trixie/main armhf golang-golang-x-net-dev all 1:0.27.0-1 [898 kB]
 Get: 46 http://deb.debian.org/debian trixie/main armhf golang-gopkg-yaml.v3-dev all 3.0.1-3 [74.3 kB]
 Get: 47 http://deb.debian.org/debian trixie/main armhf golang-gomega-dev all 1.34.2-2 [160 kB]
-Fetched 70.3 MB in 6s (12.3 MB/s)
+Fetched 70.3 MB in 1s (50.1 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package tzdata.
 (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 ... 19674 files and directories currently installed.)
@@ -328,8 +360,8 @@
 Setting up tzdata (2024b-4) ...
 
 Current default time zone: 'Etc/UTC'
-Local time is now:      Wed Dec 18 01:12:20 UTC 2024.
-Universal Time is now:  Wed Dec 18 01:12:20 UTC 2024.
+Local time is now:      Wed Dec 18 01:23:45 UTC 2024.
+Universal Time is now:  Wed Dec 18 01:23:45 UTC 2024.
 Run 'dpkg-reconfigure tzdata' if you wish to change it.
 
 Setting up autotools-dev (20220109.1) ...
@@ -374,7 +406,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-rickb777-date-1.20.1/ && 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-rickb777-date_1.20.1-1_source.changes
+I: user script /srv/workspace/pbuilder/14077/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/14077/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-rickb777-date-1.20.1/ && 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-rickb777-date_1.20.1-1_source.changes
 dpkg-buildpackage: info: source package golang-github-rickb777-date
 dpkg-buildpackage: info: source version 1.20.1-1
 dpkg-buildpackage: info: source distribution unstable
@@ -392,72 +428,72 @@
    dh_autoreconf -O--builddirectory=_build -O--buildsystem=golang
    dh_auto_configure -O--builddirectory=_build -O--buildsystem=golang
    dh_auto_build -O--builddirectory=_build -O--buildsystem=golang
-	cd _build && go install -trimpath -v -p 5 github.com/rickb777/date github.com/rickb777/date/clock github.com/rickb777/date/gregorian github.com/rickb777/date/period github.com/rickb777/date/timespan github.com/rickb777/date/view
-internal/unsafeheader
-internal/byteorder
-internal/coverage/rtcov
+	cd _build && go install -trimpath -v -p 4 github.com/rickb777/date github.com/rickb777/date/clock github.com/rickb777/date/gregorian github.com/rickb777/date/period github.com/rickb777/date/timespan github.com/rickb777/date/view
 internal/goarch
-internal/godebugs
+internal/byteorder
+internal/unsafeheader
 internal/cpu
+internal/coverage/rtcov
 internal/abi
+internal/chacha8rand
+internal/godebugs
 internal/goexperiment
+internal/bytealg
 internal/goos
-internal/chacha8rand
 internal/profilerecord
+internal/runtime/atomic
 internal/runtime/syscall
+internal/stringslite
 runtime/internal/math
-internal/bytealg
-internal/runtime/atomic
 runtime/internal/sys
 internal/race
 sync/atomic
-internal/stringslite
 unicode
+internal/runtime/exithook
 unicode/utf8
 internal/asan
-internal/runtime/exithook
 internal/itoa
 internal/msan
 cmp
 math/bits
-math
 runtime
+math
 iter
 internal/reflectlite
 sync
 slices
-internal/bisect
 internal/testlog
+internal/bisect
 errors
-internal/oserror
-path
 io
+internal/oserror
 strconv
-internal/godebug
 syscall
+internal/godebug
+path
 bytes
 strings
 reflect
 internal/syscall/execenv
-time
 internal/syscall/unix
-github.com/rickb777/date/gregorian
+time
 context
 io/fs
 internal/poll
-internal/filepathlite
+github.com/rickb777/date/gregorian
 internal/fmtsort
+internal/filepathlite
 os
 fmt
 github.com/rickb777/plural
 database/sql/driver
-github.com/rickb777/date/clock
 github.com/rickb777/date/period
+github.com/rickb777/date/clock
 github.com/rickb777/date
 github.com/rickb777/date/view
 github.com/rickb777/date/timespan
    dh_auto_test -O--builddirectory=_build -O--buildsystem=golang
-	cd _build && go test -vet=off -v -p 5 github.com/rickb777/date github.com/rickb777/date/clock github.com/rickb777/date/gregorian github.com/rickb777/date/period github.com/rickb777/date/timespan github.com/rickb777/date/view
+	cd _build && go test -vet=off -v -p 4 github.com/rickb777/date github.com/rickb777/date/clock github.com/rickb777/date/gregorian github.com/rickb777/date/period github.com/rickb777/date/timespan github.com/rickb777/date/view
 === RUN   TestDate_New
 --- PASS: TestDate_New (0.00s)
 === RUN   Test_New_and_Add
@@ -467,7 +503,7 @@
 === RUN   TestDate_Today
 --- PASS: TestDate_Today (0.00s)
 === RUN   TestDate_Time
---- PASS: TestDate_Time (0.02s)
+--- PASS: TestDate_Time (0.01s)
 === RUN   TestPredicates
 --- PASS: TestPredicates (0.00s)
 === RUN   TestArithmetic
@@ -487,7 +523,7 @@
 === RUN   TestDate_Format
 --- PASS: TestDate_Format (0.00s)
 === RUN   TestDate_gob_Encode_round_tripe
---- PASS: TestDate_gob_Encode_round_tripe (0.02s)
+--- PASS: TestDate_gob_Encode_round_tripe (0.00s)
 === RUN   TestDate_MarshalJSON_round_trip
 --- PASS: TestDate_MarshalJSON_round_trip (0.00s)
 === RUN   TestDate_MarshalText_round_trip
@@ -499,7 +535,7 @@
 === RUN   TestDate_UnmarshalText_invalid_date_text
 --- PASS: TestDate_UnmarshalText_invalid_date_text (0.00s)
 === RUN   TestAutoParse
---- PASS: TestAutoParse (0.01s)
+--- PASS: TestAutoParse (0.00s)
 === RUN   TestParseISO
 --- PASS: TestParseISO (0.00s)
 === RUN   TestParse
@@ -509,7 +545,7 @@
 === RUN   TestEncodeDecode
 --- PASS: TestEncodeDecode (0.00s)
 === RUN   TestDecodeEncode
---- PASS: TestDecodeEncode (0.01s)
+--- PASS: TestDecodeEncode (0.00s)
 === RUN   TestZone
 --- PASS: TestZone (0.00s)
 === RUN   TestDate_Scan
@@ -539,7 +575,7 @@
 === RUN   ExampleDate_FormatISO
 --- PASS: ExampleDate_FormatISO (0.00s)
 PASS
-ok  	github.com/rickb777/date	0.154s
+ok  	github.com/rickb777/date	0.026s
 === RUN   TestClockHoursMinutesSeconds
 --- PASS: TestClockHoursMinutesSeconds (0.00s)
 === RUN   TestClockSinceMidnight
@@ -565,7 +601,7 @@
 === RUN   TestClockParseBads
 --- PASS: TestClockParseBads (0.00s)
 === RUN   TestGobEncoding
---- PASS: TestGobEncoding (0.01s)
+--- PASS: TestGobEncoding (0.00s)
 === RUN   TestJSONMarshalling
 --- PASS: TestJSONMarshalling (0.00s)
 === RUN   TestJSONUnmarshalling
@@ -583,7 +619,7 @@
 === RUN   TestClockScanWithNil
 --- PASS: TestClockScanWithNil (0.00s)
 PASS
-ok  	github.com/rickb777/date/clock	0.080s
+ok  	github.com/rickb777/date/clock	0.030s
 === RUN   TestIsLeap
 --- PASS: TestIsLeap (0.00s)
 === RUN   TestDaysInYear
@@ -591,7 +627,7 @@
 === RUN   TestDaysIn
 --- PASS: TestDaysIn (0.00s)
 PASS
-ok  	github.com/rickb777/date/gregorian	0.082s
+ok  	github.com/rickb777/date/gregorian	0.011s
 === RUN   TestPeriodScale
 --- PASS: TestPeriodScale (0.00s)
 === RUN   TestPeriodAdd
@@ -605,49 +641,49 @@
 === RUN   TestPeriodTextMarshalling
 --- PASS: TestPeriodTextMarshalling (0.00s)
 === RUN   TestInvalidPeriodText
---- PASS: TestInvalidPeriodText (0.01s)
+--- PASS: TestInvalidPeriodText (0.00s)
 === RUN   TestParseErrors
 --- PASS: TestParseErrors (0.00s)
 === RUN   TestParsePeriodWithNormalise
---- PASS: TestParsePeriodWithNormalise (0.01s)
+--- PASS: TestParsePeriodWithNormalise (0.00s)
 === RUN   TestParsePeriodWithoutNormalise
---- PASS: TestParsePeriodWithoutNormalise (0.01s)
+--- PASS: TestParsePeriodWithoutNormalise (0.00s)
 === RUN   TestPeriodString
 --- PASS: TestPeriodString (0.00s)
 === RUN   TestPeriodIntComponents
---- PASS: TestPeriodIntComponents (0.01s)
+--- PASS: TestPeriodIntComponents (0.00s)
 === RUN   TestPeriodFloatComponents
---- PASS: TestPeriodFloatComponents (0.02s)
+--- PASS: TestPeriodFloatComponents (0.00s)
 === RUN   TestPeriodToDuration
 --- PASS: TestPeriodToDuration (0.00s)
 === RUN   TestSignPositiveNegative
---- PASS: TestSignPositiveNegative (0.01s)
+--- PASS: TestSignPositiveNegative (0.00s)
 === RUN   TestPeriodApproxDays
 --- PASS: TestPeriodApproxDays (0.00s)
 === RUN   TestPeriodApproxMonths
 --- PASS: TestPeriodApproxMonths (0.00s)
 === RUN   TestNewPeriod
---- PASS: TestNewPeriod (0.01s)
+--- PASS: TestNewPeriod (0.00s)
 === RUN   TestNewHMS
 --- PASS: TestNewHMS (0.00s)
 === RUN   TestNewYMD
---- PASS: TestNewYMD (0.01s)
+--- PASS: TestNewYMD (0.00s)
 === RUN   TestNewOf
---- PASS: TestNewOf (0.01s)
+--- PASS: TestNewOf (0.00s)
 === RUN   TestBetween
---- PASS: TestBetween (0.01s)
+--- PASS: TestBetween (0.00s)
 === RUN   TestNormaliseUnchanged
---- PASS: TestNormaliseUnchanged (0.03s)
+--- PASS: TestNormaliseUnchanged (0.00s)
 === RUN   TestNormaliseChanged
 --- PASS: TestNormaliseChanged (0.00s)
 === RUN   TestPeriodFormat
---- PASS: TestPeriodFormat (0.01s)
+--- PASS: TestPeriodFormat (0.00s)
 === RUN   TestPeriodOnlyYMD
 --- PASS: TestPeriodOnlyYMD (0.00s)
 === RUN   TestPeriodOnlyHMS
 --- PASS: TestPeriodOnlyHMS (0.00s)
 === RUN   TestSimplify
---- PASS: TestSimplify (0.04s)
+--- PASS: TestSimplify (0.00s)
 === RUN   TestPeriodScan
 --- PASS: TestPeriodScan (0.00s)
 === RUN   TestPeriodScan_nil_value
@@ -655,7 +691,7 @@
 === RUN   TestPeriodScan_problem_type
 --- PASS: TestPeriodScan_problem_type (0.00s)
 PASS
-ok  	github.com/rickb777/date/period	0.364s
+ok  	github.com/rickb777/date/period	0.054s
 === RUN   TestNewDateRangeOf
 --- PASS: TestNewDateRangeOf (0.00s)
 === RUN   TestNewDateRangeWithNormalise
@@ -671,7 +707,7 @@
 === RUN   TestNewMonthOf
 --- PASS: TestNewMonthOf (0.00s)
 === RUN   TestShiftAndExtend
---- PASS: TestShiftAndExtend (0.01s)
+--- PASS: TestShiftAndExtend (0.00s)
 === RUN   TestContains0
 --- PASS: TestContains0 (0.00s)
 === RUN   TestContains1
@@ -713,7 +749,7 @@
 === RUN   TestTSString
 --- PASS: TestTSString (0.00s)
 === RUN   TestTSEqual
---- PASS: TestTSEqual (0.01s)
+--- PASS: TestTSEqual (0.00s)
 === RUN   TestTSNotEqual
 --- PASS: TestTSNotEqual (0.00s)
 === RUN   TestTSFormat
@@ -745,7 +781,7 @@
 === RUN   TestConversion3
 --- PASS: TestConversion3 (0.00s)
 PASS
-ok  	github.com/rickb777/date/timespan	0.112s
+ok  	github.com/rickb777/date/timespan	0.014s
 === RUN   TestBasicFormatting
 --- PASS: TestBasicFormatting (0.00s)
 === RUN   TestZeroFormatting
@@ -765,7 +801,7 @@
 === RUN   TestTextMarshalling
 --- PASS: TestTextMarshalling (0.00s)
 PASS
-ok  	github.com/rickb777/date/view	0.036s
+ok  	github.com/rickb777/date/view	0.014s
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--builddirectory=_build -O--buildsystem=golang
    dh_prep -O--builddirectory=_build -O--buildsystem=golang
@@ -792,12 +828,14 @@
 dpkg-buildpackage: info: binary-only upload (no source included)
 dpkg-genchanges: info: including full source code in upload
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/14077/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/14077/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/1270 and its subdirectories
-I: Current time: Tue Dec 17 13:22:46 -12 2024
-I: pbuilder-time-stamp: 1734484966
+I: removing directory /srv/workspace/pbuilder/14077 and its subdirectories
+I: Current time: Wed Dec 18 15:25:16 +14 2024
+I: pbuilder-time-stamp: 1734485116