Diff of the two buildlogs:

--
--- b1/build.log	2024-05-09 20:11:36.415767237 +0000
+++ b2/build.log	2024-05-09 20:13:13.455634639 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Thu May  9 08:06:33 -12 2024
-I: pbuilder-time-stamp: 1715285193
+I: Current time: Thu Jun 12 16:34:39 +14 2025
+I: pbuilder-time-stamp: 1749695679
 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-cznic-lldb_1.0.1-1.1.debian.tar.xz
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3731935/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/2668289/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos15-amd64.
+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 Jun 12 02:34 /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/2668289/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/2668289/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='amd64'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=20 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='amd64'
+  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]="x86_64-pc-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=amd64
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=42 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='77a8b94115744d9e84b1d2e5806795ff'
-  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='3731935'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=03a4c2372f23464fbfcff5816527f6eb
+  LANG=C
+  LANGUAGE=et_EE:et
+  LC_ALL=C
+  MACHTYPE=x86_64-pc-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=2668289
   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.bDLt7wNM/pbuilderrc_Lkyv --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.bDLt7wNM/b1 --logfile b1/build.log golang-github-cznic-lldb_1.0.1-1.1.dsc'
-  SUDO_GID='110'
-  SUDO_UID='105'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://46.16.76.132:3128'
+  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.bDLt7wNM/pbuilderrc_gX7Z --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.bDLt7wNM/b2 --logfile b2/build.log golang-github-cznic-lldb_1.0.1-1.1.dsc'
+  SUDO_GID=111
+  SUDO_UID=106
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://213.165.73.152:3128
 I: uname -a
-  Linux ionos1-amd64 6.1.0-21-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.90-1 (2024-05-03) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.6.13+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.6.13-1~bpo12+1 (2024-02-15) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 May  8 11:26 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3731935/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Jun 11 17:46 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/2668289/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -162,7 +194,7 @@
 Get: 40 http://deb.debian.org/debian trixie/main amd64 golang-github-cznic-sortutil-dev all 0.0~git20150617.0.4c73428-3 [5420 B]
 Get: 41 http://deb.debian.org/debian trixie/main amd64 golang-github-golang-snappy-dev all 0.0.2-3 [53.9 kB]
 Get: 42 http://deb.debian.org/debian trixie/main amd64 golang-github-cznic-zappy-dev all 0.0~git20160305.0.4f5e6ef-3 [11.1 kB]
-Fetched 62.9 MB in 6s (9987 kB/s)
+Fetched 62.9 MB in 1s (60.5 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 ... 19699 files and directories currently installed.)
@@ -350,7 +382,11 @@
 fakeroot is already the newest version (1.33-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 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_1.0.1-1.1_source.changes
+I: user script /srv/workspace/pbuilder/2668289/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/2668289/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_1.0.1-1.1_source.changes
 dpkg-buildpackage: info: source package golang-github-cznic-lldb
 dpkg-buildpackage: info: source version 1.0.1-1.1
 dpkg-buildpackage: info: source distribution unstable
@@ -439,17 +475,17 @@
 dh_auto_test: warning: Compatibility levels before 10 are deprecated (level 9 in use)
 	cd obj-x86_64-linux-gnu && go test -vet=off -v -p 1 github.com/cznic/lldb
 === RUN   TestACID0MemBTreeCaps
---- PASS: TestACID0MemBTreeCaps (0.01s)
+--- PASS: TestACID0MemBTreeCaps (0.00s)
 === RUN   TestACIDFiler0
---- PASS: TestACIDFiler0 (7.06s)
+--- PASS: TestACIDFiler0 (0.61s)
 === RUN   TestBTreePutGetExtract
---- PASS: TestBTreePutGetExtract (23.58s)
+--- PASS: TestBTreePutGetExtract (4.68s)
 === RUN   TestBTreePutGetExtractRnd
---- PASS: TestBTreePutGetExtractRnd (0.10s)
+--- PASS: TestBTreePutGetExtractRnd (0.04s)
 === RUN   TestBTreeClear
 --- PASS: TestBTreeClear (0.00s)
 === RUN   TestBTreeRemove
---- PASS: TestBTreeRemove (0.02s)
+--- PASS: TestBTreeRemove (0.00s)
 === RUN   TestBTreeCollatingBug
     btree_test.go:989: 
         "Customer" → null
@@ -462,24 +498,24 @@
 === RUN   TestLast
 --- PASS: TestLast (0.00s)
 === RUN   TestDeleteAny
---- PASS: TestDeleteAny (0.96s)
+--- PASS: TestDeleteAny (0.24s)
 === RUN   TestBTreeEnumeratorInvalidating
 --- PASS: TestBTreeEnumeratorInvalidating (0.00s)
 === RUN   TestBTreeSeekNext
---- PASS: TestBTreeSeekNext (0.02s)
+--- PASS: TestBTreeSeekNext (0.01s)
 === RUN   TestBTreeSeekPrev
---- PASS: TestBTreeSeekPrev (0.02s)
+--- PASS: TestBTreeSeekPrev (0.01s)
 === RUN   TestBTreeSeekFirst
 --- PASS: TestBTreeSeekFirst (0.00s)
 === RUN   TestBTreeSeekLast
 --- PASS: TestBTreeSeekLast (0.00s)
 === RUN   TestBug216
---- PASS: TestBug216 (59.30s)
+--- PASS: TestBug216 (17.89s)
 === 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 (0.26s)
+--- PASS: TestKVBug27 (0.07s)
 === RUN   TestGetEmpty
 --- PASS: TestGetEmpty (0.00s)
 === RUN   TestVerify0
@@ -511,7 +547,7 @@
     falloc_test.go:388: 25 Long free block at offset 0x70: Size 0x2, but tail size 0x0 [Long free block at offset 0x70: Size 0x2, but tail size 0x0]
     falloc_test.go:388: 26 Long free block at offset 0x70: Size 0x2, but tail size 0x1 [Long free block at offset 0x70: Size 0x2, but tail size 0x1]
     falloc_test.go:388: 27 Long free block at offset 0x70: Size 0x2, but tail size 0x3 [Long free block at offset 0x70: Size 0x2, but tail size 0x3]
---- PASS: TestVerify0 (0.02s)
+--- PASS: TestVerify0 (0.00s)
 === RUN   TestVerify1
 --- PASS: TestVerify1 (0.00s)
 === RUN   TestVerify2
@@ -537,12 +573,12 @@
     falloc_test.go:571: 9 Free block at offset 0xe0: not in any FLT list [Free block at offset 0xe0: not in any FLT list]
 --- PASS: TestVerify2 (0.00s)
 === RUN   TestAllocatorAlloc0
---- PASS: TestAllocatorAlloc0 (0.01s)
+--- PASS: TestAllocatorAlloc0 (0.00s)
 === RUN   TestAllocatorMakeUsedBlock
 --- 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 (0.96s)
+--- PASS: TestAllocatorRnd (0.28s)
 === RUN   TestRollbackAllocator
 --- PASS: TestRollbackAllocator (0.00s)
 === RUN   TestFltFind
@@ -550,50 +586,50 @@
 === RUN   TestFltHead
 --- PASS: TestFltHead (0.00s)
 === RUN   TestFilerNesting
-    filer_test.go:100: /tmp/lldb-test-file4119857211
-    filer_test.go:107: /tmp/lldb-test-file63121785
-    filer_test.go:119: /tmp/lldb-test-file800110439
-    filer_test.go:128: /tmp/lldb-test-file2687145601
-    filer_test.go:100: /tmp/lldb-test-osfile302630833
-    filer_test.go:107: /tmp/lldb-test-osfile175230380
-    filer_test.go:119: /tmp/lldb-test-osfile685918147
-    filer_test.go:128: /tmp/lldb-test-osfile2213182946
-    filer_test.go:100: 0xc0001ec0f0.memfiler
-    filer_test.go:107: 0xc0001ec108.memfiler
-    filer_test.go:119: 0xc0001ec120.memfiler
-    filer_test.go:128: 0xc0001ec138.memfiler
-    filer_test.go:100: 0xc0001ec150.memfiler
-    filer_test.go:107: 0xc0001ec168.memfiler
-    filer_test.go:119: 0xc0001ec180.memfiler
-    filer_test.go:128: 0xc0001ec198.memfiler
+    filer_test.go:100: /tmp/lldb-test-file2698664874
+    filer_test.go:107: /tmp/lldb-test-file1843824701
+    filer_test.go:119: /tmp/lldb-test-file2332068635
+    filer_test.go:128: /tmp/lldb-test-file2073199420
+    filer_test.go:100: /tmp/lldb-test-osfile553198189
+    filer_test.go:107: /tmp/lldb-test-osfile903206150
+    filer_test.go:119: /tmp/lldb-test-osfile3328654299
+    filer_test.go:128: /tmp/lldb-test-osfile3649582830
+    filer_test.go:100: 0xc00024a1c8.memfiler
+    filer_test.go:107: 0xc00024a1e0.memfiler
+    filer_test.go:119: 0xc00024a1f8.memfiler
+    filer_test.go:128: 0xc00024a210.memfiler
+    filer_test.go:100: 0xc00024a228.memfiler
+    filer_test.go:107: 0xc00024a240.memfiler
+    filer_test.go:119: 0xc00024a258.memfiler
+    filer_test.go:128: 0xc00024a270.memfiler
 --- PASS: TestFilerNesting (0.00s)
 === RUN   TestFilerTruncate
-    filer_test.go:150: /tmp/lldb-test-file2624405301
-    filer_test.go:150: /tmp/lldb-test-osfile916269034
-    filer_test.go:150: 0xc0001ec210.memfiler
-    filer_test.go:150: 0xc000318510.bitfiler
-    filer_test.go:150: 0xc0001ec240.memfiler
+    filer_test.go:150: /tmp/lldb-test-file1403641253
+    filer_test.go:150: /tmp/lldb-test-osfile83733601
+    filer_test.go:150: 0xc00024a2d0.memfiler
+    filer_test.go:150: 0xc00058aab0.bitfiler
+    filer_test.go:150: 0xc00024a300.memfiler
 --- PASS: TestFilerTruncate (0.00s)
 === RUN   TestFilerReadAtWriteAt
-    filer_test.go:240: /tmp/lldb-test-file1914830875
-    filer_test.go:240: /tmp/lldb-test-osfile1610745080
-    filer_test.go:240: 0xc0001ec2a0.memfiler
-    filer_test.go:240: 0xc0003188d0.bitfiler
-    filer_test.go:240: 0xc0001ec2e8.memfiler
---- PASS: TestFilerReadAtWriteAt (0.44s)
+    filer_test.go:240: /tmp/lldb-test-file2717199551
+    filer_test.go:240: /tmp/lldb-test-osfile3688191904
+    filer_test.go:240: 0xc00024a360.memfiler
+    filer_test.go:240: 0xc00058ad80.bitfiler
+    filer_test.go:240: 0xc00024a3a8.memfiler
+--- PASS: TestFilerReadAtWriteAt (0.30s)
 === RUN   TestInnerFiler
-    filer_test.go:406: /tmp/lldb-test-file1308901037
-    filer_test.go:406: /tmp/lldb-test-osfile2455742199
-    filer_test.go:406: 0xc000012078.memfiler
-    filer_test.go:406: 0xc0004901b0.bitfiler
-    filer_test.go:406: 0xc0000120a8.memfiler
+    filer_test.go:406: /tmp/lldb-test-file838768848
+    filer_test.go:406: /tmp/lldb-test-osfile3626344054
+    filer_test.go:406: 0xc00024a420.memfiler
+    filer_test.go:406: 0xc00058af90.bitfiler
+    filer_test.go:406: 0xc000012018.memfiler
 --- PASS: TestInnerFiler (0.00s)
 === RUN   TestFileReadAtHole
-    filer_test.go:619: /tmp/lldb-test-file1550244791
-    filer_test.go:619: /tmp/lldb-test-osfile270093386
-    filer_test.go:619: 0xc000012108.memfiler
-    filer_test.go:619: 0xc000490360.bitfiler
-    filer_test.go:619: 0xc0001963c0.memfiler
+    filer_test.go:619: /tmp/lldb-test-file3894977016
+    filer_test.go:619: /tmp/lldb-test-osfile2335348171
+    filer_test.go:619: 0xc00024a048.memfiler
+    filer_test.go:619: 0xc00058a1e0.bitfiler
+    filer_test.go:619: 0xc00024a078.memfiler
 --- PASS: TestFileReadAtHole (0.00s)
 === RUN   TestEncodeDecodeScalars
     gb_test.go:122: <nil> |00|
@@ -808,22 +844,22 @@
 === RUN   TestMemFilerWriteAt
 --- PASS: TestMemFilerWriteAt (0.00s)
 === RUN   TestMemFilerWriteTo
---- PASS: TestMemFilerWriteTo (0.05s)
+--- PASS: TestMemFilerWriteTo (0.02s)
 === RUN   TestMemFilerReadFromWriteTo
     memfiler_test.go:127: 100 90
---- PASS: TestMemFilerReadFromWriteTo (0.13s)
+--- PASS: TestMemFilerReadFromWriteTo (0.06s)
 === RUN   TestRollbackFiler0
 --- PASS: TestRollbackFiler0 (0.00s)
 === RUN   TestRollbackFiler1
---- PASS: TestRollbackFiler1 (0.03s)
+--- PASS: TestRollbackFiler1 (0.01s)
 === RUN   TestRollbackFiler2
---- PASS: TestRollbackFiler2 (0.02s)
+--- PASS: TestRollbackFiler2 (0.01s)
 === RUN   TestRollbackFiler3
 --- PASS: TestRollbackFiler3 (0.00s)
 === RUN   TestRollbackFiler4
---- PASS: TestRollbackFiler4 (0.07s)
+--- PASS: TestRollbackFiler4 (0.03s)
 PASS
-ok  	github.com/cznic/lldb	93.152s
+ok  	github.com/cznic/lldb	24.270s
  fakeroot debian/rules binary
 dh binary --buildsystem=golang --with=golang
 dh: warning: Compatibility levels before 10 are deprecated (level 9 in use)
@@ -870,12 +906,14 @@
 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/2668289/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/2668289/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/3731935 and its subdirectories
-I: Current time: Thu May  9 08:11:35 -12 2024
-I: pbuilder-time-stamp: 1715285495
+I: removing directory /srv/workspace/pbuilder/2668289 and its subdirectories
+I: Current time: Thu Jun 12 16:36:12 +14 2025
+I: pbuilder-time-stamp: 1749695772