Diff of the two buildlogs:

--
--- b1/build.log	2025-09-26 17:18:58.498893872 +0000
+++ b2/build.log	2025-09-26 17:23:05.935222154 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Fri Sep 26 05:17:27 -12 2025
-I: pbuilder-time-stamp: 1758907047
+I: Current time: Fri Oct 30 13:42:00 +14 2026
+I: pbuilder-time-stamp: 1793317320
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/forky-reproducible-base.tgz]
 I: copying local configuration
@@ -22,53 +22,85 @@
 dpkg-source: info: unpacking golang-github-cznic-lldb_1.0.1-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/1966969/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/1770268/tmp/hooks/D01_modify_environment starting
+debug: Running on codethink03-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 Oct 29 23:42 /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/1770268/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/1770268/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]="3" [2]="3" [3]="1" [4]="release" [5]="aarch64-unknown-linux-gnu")
+  BASH_VERSION='5.3.3(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='forky'
-  HOME='/root'
-  HOST_ARCH='arm64'
+  DIRSTACK=()
+  DISTRIBUTION=forky
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=aarch64
+  HOST_ARCH=arm64
   IFS=' 	
   '
-  INVOCATION_ID='a2dfdb99ce6942d49bc872adcb8306ec'
-  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='1966969'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=38a383a627d5486cb10dcb2f1486bb1e
+  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=1770268
   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.IOCz9NVt/pbuilderrc_e77e --distribution forky --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/forky-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.IOCz9NVt/b1 --logfile b1/build.log golang-github-cznic-lldb_1.0.1-2.dsc'
-  SUDO_GID='109'
-  SUDO_HOME='/var/lib/jenkins'
-  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.IOCz9NVt/pbuilderrc_uLF5 --distribution forky --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/forky-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.IOCz9NVt/b2 --logfile b2/build.log golang-github-cznic-lldb_1.0.1-2.dsc'
+  SUDO_GID=109
+  SUDO_HOME=/var/lib/jenkins
+  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 codethink04-arm64 6.12.48+deb13-cloud-arm64 #1 SMP Debian 6.12.48-1 (2025-09-20) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.12.48+deb13-cloud-arm64 #1 SMP Debian 6.12.48-1 (2025-09-20) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Aug 10 12:30 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/1966969/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Aug 10  2025 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/1770268/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -166,7 +198,7 @@
 Get: 44 http://deb.debian.org/debian forky/main arm64 golang-golang-x-sys-dev all 0.36.0-1 [640 kB]
 Get: 45 http://deb.debian.org/debian forky/main arm64 golang-github-edsrzf-mmap-go-dev all 1.2.0-1 [8672 B]
 Get: 46 http://deb.debian.org/debian forky/main arm64 golang-modernc-internal-dev all 1.0.0-2 [9372 B]
-Fetched 59.6 MB in 1s (107 MB/s)
+Fetched 59.6 MB in 1s (69.4 MB/s)
 Preconfiguring packages ...
 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 ... 20020 files and directories currently installed.)
@@ -365,7 +397,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-cznic-lldb-1.0.1/ && 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-cznic-lldb_1.0.1-2_source.changes
+I: user script /srv/workspace/pbuilder/1770268/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for forky
+I: user script /srv/workspace/pbuilder/1770268/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-cznic-lldb-1.0.1/ && 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-cznic-lldb_1.0.1-2_source.changes
 dpkg-buildpackage: info: source package golang-github-cznic-lldb
 dpkg-buildpackage: info: source version 1.0.1-2
 dpkg-buildpackage: info: source distribution unstable
@@ -384,30 +420,30 @@
    dh_auto_configure -O--buildsystem=golang
    dh_auto_build -O--buildsystem=golang
 	cd obj-aarch64-linux-gnu && go install -trimpath -v -p 12 modernc.org/lldb
-internal/coverage/rtcov
-internal/goos
-internal/godebugs
-internal/goarch
 internal/unsafeheader
-internal/profilerecord
+internal/goos
+internal/byteorder
+internal/asan
 internal/msan
 internal/goexperiment
-internal/asan
-internal/byteorder
-math/bits
+internal/profilerecord
+internal/coverage/rtcov
+internal/godebugs
+internal/goarch
 internal/cpu
 internal/runtime/syscall
+math/bits
 unicode
-sync/atomic
+unicode/utf8
 internal/itoa
 cmp
 internal/chacha8rand
-internal/abi
 internal/runtime/math
-unicode/utf8
+sync/atomic
+internal/abi
 math
-internal/runtime/atomic
 internal/bytealg
+internal/runtime/atomic
 internal/runtime/sys
 internal/runtime/exithook
 internal/stringslite
@@ -416,37 +452,37 @@
 internal/runtime/maps
 runtime
 iter
-internal/reflectlite
 sync
+internal/reflectlite
 slices
-errors
 sort
+errors
 internal/bisect
 internal/testlog
-runtime/cgo
-internal/oserror
+io
 strconv
+internal/oserror
 path
-io
+runtime/cgo
 syscall
 internal/godebug
 bytes
-github.com/cznic/bufs
 strings
 reflect
+github.com/cznic/bufs
 math/rand
-bufio
-internal/syscall/unix
-internal/syscall/execenv
 time
+internal/syscall/execenv
+internal/syscall/unix
+bufio
 io/fs
 internal/poll
 internal/filepathlite
 os
-internal/fmtsort
 encoding/binary
-fmt
+internal/fmtsort
 path/filepath
+fmt
 github.com/cznic/fileutil
 github.com/cznic/zappy
 math/big
@@ -459,11 +495,11 @@
 === RUN   TestACID0MemBTreeCaps
 --- PASS: TestACID0MemBTreeCaps (0.00s)
 === RUN   TestACIDFiler0
---- PASS: TestACIDFiler0 (0.92s)
+--- PASS: TestACIDFiler0 (1.54s)
 === RUN   TestBTreePutGetExtract
---- PASS: TestBTreePutGetExtract (8.01s)
+--- PASS: TestBTreePutGetExtract (16.99s)
 === RUN   TestBTreePutGetExtractRnd
---- PASS: TestBTreePutGetExtractRnd (0.02s)
+--- PASS: TestBTreePutGetExtractRnd (0.04s)
 === RUN   TestBTreeClear
 --- PASS: TestBTreeClear (0.00s)
 === RUN   TestBTreeRemove
@@ -480,11 +516,11 @@
 === RUN   TestLast
 --- PASS: TestLast (0.00s)
 === RUN   TestDeleteAny
---- PASS: TestDeleteAny (0.46s)
+--- PASS: TestDeleteAny (5.46s)
 === RUN   TestBTreeEnumeratorInvalidating
 --- PASS: TestBTreeEnumeratorInvalidating (0.00s)
 === RUN   TestBTreeSeekNext
---- PASS: TestBTreeSeekNext (0.00s)
+--- PASS: TestBTreeSeekNext (0.01s)
 === RUN   TestBTreeSeekPrev
 --- PASS: TestBTreeSeekPrev (0.01s)
 === RUN   TestBTreeSeekFirst
@@ -492,12 +528,12 @@
 === RUN   TestBTreeSeekLast
 --- PASS: TestBTreeSeekLast (0.00s)
 === RUN   TestBug216
---- PASS: TestBug216 (20.44s)
+--- PASS: TestBug216 (102.57s)
 === RUN   TestKVBug27
     btree_test.go:1931: keys 795, got 511, exp 511
     btree_test.go:1931: keys 796, got 512, exp 512
     btree_test.go:1931: keys 797, got 513, exp 513
---- PASS: TestKVBug27 (0.08s)
+--- PASS: TestKVBug27 (0.07s)
 === RUN   TestGetEmpty
 --- PASS: TestGetEmpty (0.00s)
 === RUN   TestVerify0
@@ -560,7 +596,7 @@
 --- PASS: TestAllocatorMakeUsedBlock (0.00s)
 === RUN   TestAllocatorRnd
     falloc_test.go:954: kind 0, AllocAtoms    3282, AllocBytes   50090, FreeAtoms    3294, Relocations      63, TotalAtoms    6576, f.Size  105328, space eff 47.56%
---- PASS: TestAllocatorRnd (0.36s)
+--- PASS: TestAllocatorRnd (0.57s)
 === RUN   TestRollbackAllocator
 --- PASS: TestRollbackAllocator (0.00s)
 === RUN   TestFltFind
@@ -568,50 +604,50 @@
 === RUN   TestFltHead
 --- PASS: TestFltHead (0.00s)
 === RUN   TestFilerNesting
-    filer_test.go:100: /tmp/lldb-test-file4097383187
-    filer_test.go:107: /tmp/lldb-test-file381707372
-    filer_test.go:119: /tmp/lldb-test-file1883533514
-    filer_test.go:128: /tmp/lldb-test-file2574833552
-    filer_test.go:100: /tmp/lldb-test-osfile2683571456
-    filer_test.go:107: /tmp/lldb-test-osfile151061576
-    filer_test.go:119: /tmp/lldb-test-osfile3026776348
-    filer_test.go:128: /tmp/lldb-test-osfile1438869312
-    filer_test.go:100: 0x40099a9218.memfiler
-    filer_test.go:107: 0x40099a9230.memfiler
-    filer_test.go:119: 0x40099a9248.memfiler
-    filer_test.go:128: 0x40099a9260.memfiler
-    filer_test.go:100: 0x40099a9278.memfiler
-    filer_test.go:107: 0x40099a9290.memfiler
-    filer_test.go:119: 0x40099a92a8.memfiler
-    filer_test.go:128: 0x40099a92c0.memfiler
+    filer_test.go:100: /tmp/lldb-test-file2821506159
+    filer_test.go:107: /tmp/lldb-test-file1385503179
+    filer_test.go:119: /tmp/lldb-test-file3803014581
+    filer_test.go:128: /tmp/lldb-test-file3194896523
+    filer_test.go:100: /tmp/lldb-test-osfile3248586049
+    filer_test.go:107: /tmp/lldb-test-osfile533673629
+    filer_test.go:119: /tmp/lldb-test-osfile3920530600
+    filer_test.go:128: /tmp/lldb-test-osfile1827027424
+    filer_test.go:100: 0x4000198318.memfiler
+    filer_test.go:107: 0x4000198330.memfiler
+    filer_test.go:119: 0x4000198348.memfiler
+    filer_test.go:128: 0x4000198360.memfiler
+    filer_test.go:100: 0x4000198378.memfiler
+    filer_test.go:107: 0x4000198390.memfiler
+    filer_test.go:119: 0x40001983a8.memfiler
+    filer_test.go:128: 0x40001983c0.memfiler
 --- PASS: TestFilerNesting (0.00s)
 === RUN   TestFilerTruncate
-    filer_test.go:150: /tmp/lldb-test-file1263044531
-    filer_test.go:150: /tmp/lldb-test-osfile2781017883
-    filer_test.go:150: 0x40099a9320.memfiler
-    filer_test.go:150: 0x400c3fb7a0.bitfiler
-    filer_test.go:150: 0x40099a9350.memfiler
+    filer_test.go:150: /tmp/lldb-test-file1145855214
+    filer_test.go:150: /tmp/lldb-test-osfile4180573335
+    filer_test.go:150: 0x4000198420.memfiler
+    filer_test.go:150: 0x400314e3c0.bitfiler
+    filer_test.go:150: 0x4000198450.memfiler
 --- PASS: TestFilerTruncate (0.00s)
 === RUN   TestFilerReadAtWriteAt
-    filer_test.go:240: /tmp/lldb-test-file3865089263
-    filer_test.go:240: /tmp/lldb-test-osfile1932335469
-    filer_test.go:240: 0x40099a93b0.memfiler
-    filer_test.go:240: 0x400c3fba40.bitfiler
-    filer_test.go:240: 0x40099a93e0.memfiler
---- PASS: TestFilerReadAtWriteAt (0.24s)
+    filer_test.go:240: /tmp/lldb-test-file4010717876
+    filer_test.go:240: /tmp/lldb-test-osfile2044864596
+    filer_test.go:240: 0x4000fec1f8.memfiler
+    filer_test.go:240: 0x400314e630.bitfiler
+    filer_test.go:240: 0x40001984c8.memfiler
+--- PASS: TestFilerReadAtWriteAt (0.85s)
 === RUN   TestInnerFiler
-    filer_test.go:406: /tmp/lldb-test-file3028249996
-    filer_test.go:406: /tmp/lldb-test-osfile3668787684
-    filer_test.go:406: 0x40099a9440.memfiler
-    filer_test.go:406: 0x400c3fbbf0.bitfiler
-    filer_test.go:406: 0x40099a9470.memfiler
+    filer_test.go:406: /tmp/lldb-test-file879825219
+    filer_test.go:406: /tmp/lldb-test-osfile1024550986
+    filer_test.go:406: 0x4000fec258.memfiler
+    filer_test.go:406: 0x4000516b70.bitfiler
+    filer_test.go:406: 0x4000fec288.memfiler
 --- PASS: TestInnerFiler (0.00s)
 === RUN   TestFileReadAtHole
-    filer_test.go:619: /tmp/lldb-test-file2049268452
-    filer_test.go:619: /tmp/lldb-test-osfile691883100
-    filer_test.go:619: 0x40099a94d0.memfiler
-    filer_test.go:619: 0x400c3fbda0.bitfiler
-    filer_test.go:619: 0x40099a9500.memfiler
+    filer_test.go:619: /tmp/lldb-test-file2884687288
+    filer_test.go:619: /tmp/lldb-test-osfile936522730
+    filer_test.go:619: 0x4000198528.memfiler
+    filer_test.go:619: 0x400314e7e0.bitfiler
+    filer_test.go:619: 0x4000198558.memfiler
 --- PASS: TestFileReadAtHole (0.00s)
 === RUN   TestEncodeDecodeScalars
     gb_test.go:122: <nil> |00|
@@ -826,22 +862,22 @@
 === RUN   TestMemFilerWriteAt
 --- PASS: TestMemFilerWriteAt (0.00s)
 === RUN   TestMemFilerWriteTo
---- PASS: TestMemFilerWriteTo (0.02s)
+--- PASS: TestMemFilerWriteTo (0.05s)
 === RUN   TestMemFilerReadFromWriteTo
     memfiler_test.go:127: 100 90
---- PASS: TestMemFilerReadFromWriteTo (0.04s)
+--- PASS: TestMemFilerReadFromWriteTo (0.13s)
 === RUN   TestRollbackFiler0
 --- PASS: TestRollbackFiler0 (0.00s)
 === RUN   TestRollbackFiler1
---- PASS: TestRollbackFiler1 (0.01s)
+--- PASS: TestRollbackFiler1 (0.02s)
 === RUN   TestRollbackFiler2
 --- PASS: TestRollbackFiler2 (0.01s)
 === RUN   TestRollbackFiler3
 --- PASS: TestRollbackFiler3 (0.00s)
 === RUN   TestRollbackFiler4
---- PASS: TestRollbackFiler4 (0.02s)
+--- PASS: TestRollbackFiler4 (0.05s)
 PASS
-ok  	modernc.org/lldb	30.754s
+ok  	modernc.org/lldb	128.500s
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=golang
    dh_prep -O--buildsystem=golang
@@ -876,12 +912,14 @@
 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/1770268/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/1770268/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/1966969 and its subdirectories
-I: Current time: Fri Sep 26 05:18:57 -12 2025
-I: pbuilder-time-stamp: 1758907137
+I: removing directory /srv/workspace/pbuilder/1770268 and its subdirectories
+I: Current time: Fri Oct 30 13:46:05 +14 2026
+I: pbuilder-time-stamp: 1793317565