Diff of the two buildlogs:

--
--- b1/build.log	2024-05-14 06:08:23.313738510 +0000
+++ b2/build.log	2024-05-14 06:09:30.034897573 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Mon Jun 16 00:29:42 -12 2025
-I: pbuilder-time-stamp: 1750076982
+I: Current time: Tue May 14 20:08:26 +14 2024
+I: pbuilder-time-stamp: 1715666906
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -26,52 +26,84 @@
 dpkg-source: info: unpacking golang-blackfriday_1.6.0-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3074278/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/3323511/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink04-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
+'/bin/sh' -> '/bin/bash'
+lrwxrwxrwx 1 root root 9 May 14 06:08 /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/3323511/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/3323511/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='arm64'
-  DEBIAN_FRONTEND='noninteractive'
+  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]="21" [3]="1" [4]="release" [5]="aarch64-unknown-linux-gnu")
+  BASH_VERSION='5.2.21(1)-release'
+  BUILDDIR=/build/reproducible-path
+  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=12 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  INVOCATION_ID='6fed49e1d5b44b12804a85a8fe2227e7'
-  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='3074278'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=03e1377cf48948b7acfbaef48738fe3e
+  LANG=C
+  LANGUAGE=nl_BE:nl
+  LC_ALL=C
+  MACHTYPE=aarch64-unknown-linux-gnu
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnu
+  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=3323511
   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.BIPzTTaF/pbuilderrc_cYhl --distribution unstable --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.BIPzTTaF/b1 --logfile b1/build.log golang-blackfriday_1.6.0-1.dsc'
-  SUDO_GID='109'
-  SUDO_UID='104'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://192.168.101.4:3128'
+  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.BIPzTTaF/pbuilderrc_kVN1 --distribution unstable --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/unstable-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.BIPzTTaF/b2 --logfile b2/build.log golang-blackfriday_1.6.0-1.dsc'
+  SUDO_GID=109
+  SUDO_UID=104
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://192.168.101.4:3128
 I: uname -a
-  Linux codethink01-arm64 6.1.0-21-cloud-arm64 #1 SMP Debian 6.1.90-1 (2024-05-03) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-21-cloud-arm64 #1 SMP Debian 6.1.90-1 (2024-05-03) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Jun 15 14:05 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3074278/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 May 13 07:43 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/3323511/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -147,7 +179,7 @@
 Get: 34 http://deb.debian.org/debian unstable/main arm64 golang-src all 2:1.22~3 [5020 B]
 Get: 35 http://deb.debian.org/debian unstable/main arm64 golang-go arm64 2:1.22~3 [44.2 kB]
 Get: 36 http://deb.debian.org/debian unstable/main arm64 golang-any arm64 2:1.22~3 [5104 B]
-Fetched 58.9 MB in 0s (127 MB/s)
+Fetched 58.9 MB in 0s (203 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 ... 19744 files and directories currently installed.)
@@ -306,7 +338,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-blackfriday-1.6.0/ && 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-blackfriday_1.6.0-1_source.changes
+I: user script /srv/workspace/pbuilder/3323511/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/3323511/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-blackfriday-1.6.0/ && 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-blackfriday_1.6.0-1_source.changes
 dpkg-buildpackage: info: source package golang-blackfriday
 dpkg-buildpackage: info: source version 1.6.0-1
 dpkg-buildpackage: info: source distribution unstable
@@ -325,25 +361,25 @@
    dh_auto_configure -O--buildsystem=golang
    dh_auto_build -O--buildsystem=golang
 	cd obj-aarch64-linux-gnu && go install -trimpath -v -p 12 github.com/russross/blackfriday
-internal/goarch
-internal/unsafeheader
+internal/goexperiment
 internal/godebugs
+internal/unsafeheader
+internal/goarch
 internal/coverage/rtcov
-internal/goos
-unicode/utf8
-unicode
 internal/race
-runtime/internal/math
-internal/itoa
 runtime/internal/syscall
+internal/itoa
 math/bits
-internal/goexperiment
-cmp
+unicode/utf8
+unicode
 sync/atomic
-internal/cpu
+cmp
+internal/abi
 internal/chacha8rand
+internal/goos
+runtime/internal/math
+internal/cpu
 runtime/internal/sys
-internal/abi
 math
 slices
 internal/bytealg
@@ -356,9 +392,9 @@
 sort
 io
 internal/safefilepath
-strconv
-internal/oserror
 path
+internal/oserror
+strconv
 syscall
 bytes
 strings
@@ -379,61 +415,61 @@
 dh_auto_test -O--buildsystem=golang -- -timeout 30m
 	cd obj-aarch64-linux-gnu && go test -vet=off -v -p 12 -timeout 30m github.com/russross/blackfriday
 === RUN   TestPrefixHeaderNoExtensions
---- PASS: TestPrefixHeaderNoExtensions (0.12s)
+--- PASS: TestPrefixHeaderNoExtensions (0.01s)
 === RUN   TestPrefixHeaderSpaceExtension
---- PASS: TestPrefixHeaderSpaceExtension (0.10s)
+--- PASS: TestPrefixHeaderSpaceExtension (0.01s)
 === RUN   TestPrefixHeaderIdExtension
---- PASS: TestPrefixHeaderIdExtension (0.06s)
+--- PASS: TestPrefixHeaderIdExtension (0.03s)
 === RUN   TestPrefixHeaderIdExtensionWithPrefixAndSuffix
---- PASS: TestPrefixHeaderIdExtensionWithPrefixAndSuffix (0.03s)
+--- PASS: TestPrefixHeaderIdExtensionWithPrefixAndSuffix (0.02s)
 === RUN   TestPrefixAutoHeaderIdExtension
 --- PASS: TestPrefixAutoHeaderIdExtension (0.02s)
 === RUN   TestPrefixAutoHeaderIdExtensionWithPrefixAndSuffix
---- PASS: TestPrefixAutoHeaderIdExtensionWithPrefixAndSuffix (0.01s)
+--- PASS: TestPrefixAutoHeaderIdExtensionWithPrefixAndSuffix (0.02s)
 === RUN   TestPrefixMultipleHeaderExtensions
 --- PASS: TestPrefixMultipleHeaderExtensions (0.00s)
 === RUN   TestUnderlineHeaders
---- PASS: TestUnderlineHeaders (0.09s)
+--- PASS: TestUnderlineHeaders (0.02s)
 === RUN   TestUnderlineHeadersAutoIDs
---- PASS: TestUnderlineHeadersAutoIDs (0.03s)
+--- PASS: TestUnderlineHeadersAutoIDs (0.02s)
 === RUN   TestHorizontalRule
 --- PASS: TestHorizontalRule (0.00s)
 === RUN   TestUnorderedList
---- PASS: TestUnorderedList (0.24s)
+--- PASS: TestUnorderedList (0.06s)
 === RUN   TestFencedCodeBlockWithinList
 --- PASS: TestFencedCodeBlockWithinList (0.00s)
 === RUN   TestOrderedList
---- PASS: TestOrderedList (0.12s)
+--- PASS: TestOrderedList (0.07s)
 === RUN   TestDefinitionList
---- PASS: TestDefinitionList (0.50s)
+--- PASS: TestDefinitionList (0.10s)
 === RUN   TestPreformattedHtml
---- PASS: TestPreformattedHtml (0.25s)
+--- PASS: TestPreformattedHtml (0.04s)
 === RUN   TestPreformattedHtmlLax
---- PASS: TestPreformattedHtmlLax (0.16s)
+--- PASS: TestPreformattedHtmlLax (0.03s)
 === RUN   TestFencedCodeBlock
---- PASS: TestFencedCodeBlock (1.72s)
+--- PASS: TestFencedCodeBlock (0.25s)
 === RUN   TestFencedCodeInsideBlockquotes
---- PASS: TestFencedCodeInsideBlockquotes (0.18s)
+--- PASS: TestFencedCodeInsideBlockquotes (0.07s)
 === RUN   TestTable
---- PASS: TestTable (0.05s)
+--- PASS: TestTable (0.03s)
 === RUN   TestUnorderedListWith_EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK
---- PASS: TestUnorderedListWith_EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK (0.13s)
+--- PASS: TestUnorderedListWith_EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK (0.07s)
 === RUN   TestOrderedList_EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK
---- PASS: TestOrderedList_EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK (0.12s)
+--- PASS: TestOrderedList_EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK (0.07s)
 === RUN   TestFencedCodeBlock_EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK
---- PASS: TestFencedCodeBlock_EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK (0.08s)
+--- PASS: TestFencedCodeBlock_EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK (0.06s)
 === RUN   TestListWithFencedCodeBlock
---- PASS: TestListWithFencedCodeBlock (0.02s)
+--- PASS: TestListWithFencedCodeBlock (0.01s)
 === RUN   TestListWithMalformedFencedCodeBlock
---- PASS: TestListWithMalformedFencedCodeBlock (0.01s)
+--- PASS: TestListWithMalformedFencedCodeBlock (0.00s)
 === RUN   TestListWithFencedCodeBlockNoExtensions
---- PASS: TestListWithFencedCodeBlockNoExtensions (0.02s)
+--- PASS: TestListWithFencedCodeBlockNoExtensions (0.01s)
 === RUN   TestTitleBlock_EXTENSION_TITLEBLOCK
 --- PASS: TestTitleBlock_EXTENSION_TITLEBLOCK (0.01s)
 === RUN   TestBlockComments
---- PASS: TestBlockComments (0.03s)
+--- PASS: TestBlockComments (0.02s)
 === RUN   TestCDATA
---- PASS: TestCDATA (0.04s)
+--- PASS: TestCDATA (0.02s)
 === RUN   TestIsFenceLine
 --- PASS: TestIsFenceLine (0.00s)
 === RUN   TestJoinLines
@@ -441,65 +477,65 @@
 === RUN   TestSanitizedAnchorName
 --- PASS: TestSanitizedAnchorName (0.00s)
 === RUN   TestEmphasis
---- PASS: TestEmphasis (0.06s)
+--- PASS: TestEmphasis (0.03s)
 === RUN   TestNoIntraEmphasis
 --- PASS: TestNoIntraEmphasis (0.00s)
 === RUN   TestReferenceOverride
---- PASS: TestReferenceOverride (0.05s)
+--- PASS: TestReferenceOverride (0.03s)
 === RUN   TestStrong
---- PASS: TestStrong (0.04s)
+--- PASS: TestStrong (0.03s)
 === RUN   TestEmphasisMix
---- PASS: TestEmphasisMix (0.02s)
+--- PASS: TestEmphasisMix (0.01s)
 === RUN   TestEmphasisLink
---- PASS: TestEmphasisLink (0.03s)
+--- PASS: TestEmphasisLink (0.01s)
 === RUN   TestStrikeThrough
---- PASS: TestStrikeThrough (0.01s)
+--- PASS: TestStrikeThrough (0.02s)
 === RUN   TestCodeSpan
 --- PASS: TestCodeSpan (0.04s)
 === RUN   TestLineBreak
 --- PASS: TestLineBreak (0.01s)
 === RUN   TestInlineLink
---- PASS: TestInlineLink (0.66s)
+--- PASS: TestInlineLink (0.43s)
 === RUN   TestRelAttrLink
---- PASS: TestRelAttrLink (0.02s)
+--- PASS: TestRelAttrLink (0.01s)
 === RUN   TestHrefTargetBlank
 --- PASS: TestHrefTargetBlank (0.00s)
 === RUN   TestSafeInlineLink
 --- PASS: TestSafeInlineLink (0.01s)
 === RUN   TestReferenceLink
---- PASS: TestReferenceLink (0.17s)
+--- PASS: TestReferenceLink (0.08s)
 === RUN   TestTags
---- PASS: TestTags (0.01s)
+--- PASS: TestTags (0.00s)
 === RUN   TestAutoLink
---- PASS: TestAutoLink (0.85s)
+--- PASS: TestAutoLink (0.47s)
 === RUN   TestFootnotes
---- PASS: TestFootnotes (0.52s)
+--- PASS: TestFootnotes (0.25s)
 === RUN   TestFootnotesWithParameters
---- PASS: TestFootnotesWithParameters (0.52s)
+--- PASS: TestFootnotesWithParameters (0.28s)
 === RUN   TestNestedFootnotes
---- PASS: TestNestedFootnotes (0.15s)
+--- PASS: TestNestedFootnotes (0.10s)
 === RUN   TestInlineComments
---- PASS: TestInlineComments (0.02s)
+--- PASS: TestInlineComments (0.01s)
 === RUN   TestSmartDoubleQuotes
---- PASS: TestSmartDoubleQuotes (0.01s)
+--- PASS: TestSmartDoubleQuotes (0.00s)
 === RUN   TestSmartDoubleQuotesNbsp
 --- PASS: TestSmartDoubleQuotesNbsp (0.01s)
 === RUN   TestSmartAngledDoubleQuotes
---- PASS: TestSmartAngledDoubleQuotes (0.02s)
+--- PASS: TestSmartAngledDoubleQuotes (0.01s)
 === RUN   TestSmartAngledDoubleQuotesNbsp
 --- PASS: TestSmartAngledDoubleQuotesNbsp (0.01s)
 === RUN   TestSmartFractions
---- PASS: TestSmartFractions (0.04s)
+--- PASS: TestSmartFractions (0.02s)
 === RUN   TestDisableSmartDashes
 --- PASS: TestDisableSmartDashes (0.00s)
 === RUN   TestDocument
 --- PASS: TestDocument (0.00s)
 === RUN   TestReference
---- PASS: TestReference (14.06s)
+--- PASS: TestReference (8.20s)
 === RUN   TestReference_EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK
---- PASS: TestReference_EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK (13.99s)
+--- PASS: TestReference_EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK (10.46s)
 PASS
-ok  	github.com/russross/blackfriday	35.640s
+ok  	github.com/russross/blackfriday	21.602s
 make[1]: Leaving directory '/build/reproducible-path/golang-blackfriday-1.6.0'
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=golang
@@ -527,12 +563,14 @@
 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/3323511/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/3323511/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/3074278 and its subdirectories
-I: Current time: Mon Jun 16 00:31:21 -12 2025
-I: pbuilder-time-stamp: 1750077081
+I: removing directory /srv/workspace/pbuilder/3323511 and its subdirectories
+I: Current time: Tue May 14 20:09:29 +14 2024
+I: pbuilder-time-stamp: 1715666969