Diff of the two buildlogs:

--
--- b1/build.log	2025-03-12 18:29:04.404604948 +0000
+++ b2/build.log	2025-03-12 18:35:30.307215619 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Tue Apr 14 12:50:44 -12 2026
-I: pbuilder-time-stamp: 1776214244
+I: Current time: Thu Mar 13 08:29:06 +14 2025
+I: pbuilder-time-stamp: 1741804146
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -22,52 +22,84 @@
 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/2880695/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/574437/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos11-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 Mar 12 18:29 /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/574437/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/574437/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=42 '
-  DISTRIBUTION='unstable'
-  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]="37" [3]="1" [4]="release" [5]="x86_64-pc-linux-gnu")
+  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=amd64
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=20 '
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=x86_64
+  HOST_ARCH=amd64
   IFS=' 	
   '
-  INVOCATION_ID='e01d2904ee6748cd813668cb6cd41695'
-  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='2880695'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=9fadd61820994d63a0af628b7f9bf0e4
+  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=574437
   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.w9V3FcKP/pbuilderrc_8hye --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.w9V3FcKP/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://213.165.73.152:3128'
+  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.w9V3FcKP/pbuilderrc_8baw --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.w9V3FcKP/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://46.16.76.132:3128
 I: uname -a
-  Linux ionos5-amd64 6.12.12+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.12-1~bpo12+1 (2025-02-23) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-31-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.128-1 (2025-02-07) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/2880695/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4 11:20 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/574437/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -159,7 +191,7 @@
 Get: 40 http://deb.debian.org/debian unstable/main amd64 golang-github-cznic-sortutil-dev all 0.0~git20150617.0.4c73428-3 [5420 B]
 Get: 41 http://deb.debian.org/debian unstable/main amd64 golang-github-golang-snappy-dev all 0.0.2-3 [53.9 kB]
 Get: 42 http://deb.debian.org/debian unstable/main amd64 golang-github-cznic-zappy-dev all 0.0~git20160305.0.4f5e6ef-3 [11.1 kB]
-Fetched 70.6 MB in 3s (21.8 MB/s)
+Fetched 70.6 MB in 4s (16.6 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 ... 19783 files and directories currently installed.)
@@ -347,7 +379,11 @@
 fakeroot is already the newest version (1.37-1).
 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/574437/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/574437/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
@@ -447,15 +483,15 @@
 === RUN   TestACID0MemBTreeCaps
 --- PASS: TestACID0MemBTreeCaps (0.00s)
 === RUN   TestACIDFiler0
---- PASS: TestACIDFiler0 (0.54s)
+--- PASS: TestACIDFiler0 (4.32s)
 === RUN   TestBTreePutGetExtract
---- PASS: TestBTreePutGetExtract (4.73s)
+--- PASS: TestBTreePutGetExtract (28.48s)
 === RUN   TestBTreePutGetExtractRnd
---- PASS: TestBTreePutGetExtractRnd (0.03s)
+--- PASS: TestBTreePutGetExtractRnd (0.11s)
 === RUN   TestBTreeClear
 --- PASS: TestBTreeClear (0.00s)
 === RUN   TestBTreeRemove
---- PASS: TestBTreeRemove (0.00s)
+--- PASS: TestBTreeRemove (0.01s)
 === RUN   TestBTreeCollatingBug
     btree_test.go:989: 
         "Customer" → null
@@ -464,28 +500,28 @@
 === RUN   TestExtract
 --- PASS: TestExtract (0.00s)
 === RUN   TestFirst
---- PASS: TestFirst (0.00s)
+--- PASS: TestFirst (0.01s)
 === RUN   TestLast
 --- PASS: TestLast (0.00s)
 === RUN   TestDeleteAny
---- PASS: TestDeleteAny (0.24s)
+--- PASS: TestDeleteAny (1.78s)
 === RUN   TestBTreeEnumeratorInvalidating
 --- PASS: TestBTreeEnumeratorInvalidating (0.00s)
 === RUN   TestBTreeSeekNext
---- PASS: TestBTreeSeekNext (0.01s)
+--- PASS: TestBTreeSeekNext (0.07s)
 === RUN   TestBTreeSeekPrev
---- PASS: TestBTreeSeekPrev (0.01s)
+--- PASS: TestBTreeSeekPrev (0.04s)
 === RUN   TestBTreeSeekFirst
 --- PASS: TestBTreeSeekFirst (0.00s)
 === RUN   TestBTreeSeekLast
 --- PASS: TestBTreeSeekLast (0.00s)
 === RUN   TestBug216
---- PASS: TestBug216 (18.03s)
+--- PASS: TestBug216 (140.69s)
 === 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 (0.07s)
+--- PASS: TestKVBug27 (0.36s)
 === RUN   TestGetEmpty
 --- PASS: TestGetEmpty (0.00s)
 === RUN   TestVerify0
@@ -541,14 +577,14 @@
     falloc_test.go:571: 8 Free block at offset 0x70 is invalid or referenced multiple times [Free block at offset 0x70 is invalid or referenced multiple times]
     falloc_test.go:561: 9 logged:  Free block at offset 0xe0: not in any FLT list
     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)
+--- PASS: TestVerify2 (0.01s)
 === RUN   TestAllocatorAlloc0
---- PASS: TestAllocatorAlloc0 (0.00s)
+--- PASS: TestAllocatorAlloc0 (0.02s)
 === 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 (0.29s)
+--- PASS: TestAllocatorRnd (2.12s)
 === RUN   TestRollbackAllocator
 --- PASS: TestRollbackAllocator (0.00s)
 === RUN   TestFltFind
@@ -556,50 +592,50 @@
 === RUN   TestFltHead
 --- PASS: TestFltHead (0.00s)
 === RUN   TestFilerNesting
-    filer_test.go:100: /tmp/lldb-test-file3314295245
-    filer_test.go:107: /tmp/lldb-test-file4283242767
-    filer_test.go:119: /tmp/lldb-test-file348719566
-    filer_test.go:128: /tmp/lldb-test-file209388056
-    filer_test.go:100: /tmp/lldb-test-osfile3343341824
-    filer_test.go:107: /tmp/lldb-test-osfile2049575562
-    filer_test.go:119: /tmp/lldb-test-osfile422584009
-    filer_test.go:128: /tmp/lldb-test-osfile3291987580
-    filer_test.go:100: 0xc0000103f0.memfiler
-    filer_test.go:107: 0xc000010408.memfiler
-    filer_test.go:119: 0xc000010420.memfiler
-    filer_test.go:128: 0xc000010438.memfiler
-    filer_test.go:100: 0xc000010450.memfiler
-    filer_test.go:107: 0xc000010468.memfiler
-    filer_test.go:119: 0xc000010480.memfiler
-    filer_test.go:128: 0xc000010498.memfiler
+    filer_test.go:100: /tmp/lldb-test-file2449671268
+    filer_test.go:107: /tmp/lldb-test-file1875801876
+    filer_test.go:119: /tmp/lldb-test-file2543444438
+    filer_test.go:128: /tmp/lldb-test-file797959238
+    filer_test.go:100: /tmp/lldb-test-osfile2666334936
+    filer_test.go:107: /tmp/lldb-test-osfile3706147345
+    filer_test.go:119: /tmp/lldb-test-osfile710932932
+    filer_test.go:128: /tmp/lldb-test-osfile3171019580
+    filer_test.go:100: 0xc00011e468.memfiler
+    filer_test.go:107: 0xc00011e480.memfiler
+    filer_test.go:119: 0xc00011e498.memfiler
+    filer_test.go:128: 0xc00011e4b0.memfiler
+    filer_test.go:100: 0xc00011e4c8.memfiler
+    filer_test.go:107: 0xc00011e4e0.memfiler
+    filer_test.go:119: 0xc00011e4f8.memfiler
+    filer_test.go:128: 0xc00011e510.memfiler
 --- PASS: TestFilerNesting (0.00s)
 === RUN   TestFilerTruncate
-    filer_test.go:150: /tmp/lldb-test-file3468068456
-    filer_test.go:150: /tmp/lldb-test-osfile3511676021
-    filer_test.go:150: 0xc0000104f8.memfiler
-    filer_test.go:150: 0xc000472b10.bitfiler
-    filer_test.go:150: 0xc000010528.memfiler
+    filer_test.go:150: /tmp/lldb-test-file1627063797
+    filer_test.go:150: /tmp/lldb-test-osfile1728675612
+    filer_test.go:150: 0xc00011e570.memfiler
+    filer_test.go:150: 0xc0000bc870.bitfiler
+    filer_test.go:150: 0xc00011e5a0.memfiler
 --- PASS: TestFilerTruncate (0.00s)
 === RUN   TestFilerReadAtWriteAt
-    filer_test.go:240: /tmp/lldb-test-file1471707335
-    filer_test.go:240: /tmp/lldb-test-osfile729973589
-    filer_test.go:240: 0xc000010588.memfiler
-    filer_test.go:240: 0xc000472e40.bitfiler
-    filer_test.go:240: 0xc0000105b8.memfiler
---- PASS: TestFilerReadAtWriteAt (0.24s)
+    filer_test.go:240: /tmp/lldb-test-file1072050319
+    filer_test.go:240: /tmp/lldb-test-osfile3710932874
+    filer_test.go:240: 0xc000010060.memfiler
+    filer_test.go:240: 0xc000418120.bitfiler
+    filer_test.go:240: 0xc000010090.memfiler
+--- PASS: TestFilerReadAtWriteAt (1.08s)
 === RUN   TestInnerFiler
-    filer_test.go:406: /tmp/lldb-test-file3650690604
-    filer_test.go:406: /tmp/lldb-test-osfile858983955
-    filer_test.go:406: 0xc0000102b8.memfiler
-    filer_test.go:406: 0xc000472150.bitfiler
-    filer_test.go:406: 0xc0000102e8.memfiler
---- PASS: TestInnerFiler (0.00s)
+    filer_test.go:406: /tmp/lldb-test-file1526854501
+    filer_test.go:406: /tmp/lldb-test-osfile2307934856
+    filer_test.go:406: 0xc0000100f0.memfiler
+    filer_test.go:406: 0xc0004182d0.bitfiler
+    filer_test.go:406: 0xc000010120.memfiler
+--- PASS: TestInnerFiler (0.05s)
 === RUN   TestFileReadAtHole
-    filer_test.go:619: /tmp/lldb-test-file3752981959
-    filer_test.go:619: /tmp/lldb-test-osfile1825413320
-    filer_test.go:619: 0xc000010348.memfiler
-    filer_test.go:619: 0xc000472330.bitfiler
-    filer_test.go:619: 0xc000010378.memfiler
+    filer_test.go:619: /tmp/lldb-test-file934195669
+    filer_test.go:619: /tmp/lldb-test-osfile3269101341
+    filer_test.go:619: 0xc000010180.memfiler
+    filer_test.go:619: 0xc000418480.bitfiler
+    filer_test.go:619: 0xc0000101b0.memfiler
 --- PASS: TestFileReadAtHole (0.00s)
 === RUN   TestEncodeDecodeScalars
     gb_test.go:122: <nil> |00|
@@ -670,7 +706,7 @@
     gb_test.go:122: 170 |ff|
 --- PASS: TestEncodeDecodeScalars (0.00s)
 === RUN   TestCollateScalars
---- PASS: TestCollateScalars (0.00s)
+--- PASS: TestCollateScalars (0.01s)
 === RUN   TestEncodingBug
     gb_test.go:340: bits 0000000000000000, enc |03|
     gb_test.go:359: 0
@@ -814,22 +850,22 @@
 === RUN   TestMemFilerWriteAt
 --- PASS: TestMemFilerWriteAt (0.00s)
 === RUN   TestMemFilerWriteTo
---- PASS: TestMemFilerWriteTo (0.02s)
+--- PASS: TestMemFilerWriteTo (0.12s)
 === RUN   TestMemFilerReadFromWriteTo
     memfiler_test.go:127: 100 90
---- PASS: TestMemFilerReadFromWriteTo (0.06s)
+--- PASS: TestMemFilerReadFromWriteTo (0.34s)
 === RUN   TestRollbackFiler0
 --- PASS: TestRollbackFiler0 (0.00s)
 === RUN   TestRollbackFiler1
---- PASS: TestRollbackFiler1 (0.01s)
+--- PASS: TestRollbackFiler1 (0.09s)
 === RUN   TestRollbackFiler2
---- PASS: TestRollbackFiler2 (0.01s)
+--- PASS: TestRollbackFiler2 (0.04s)
 === RUN   TestRollbackFiler3
 --- PASS: TestRollbackFiler3 (0.00s)
 === RUN   TestRollbackFiler4
---- PASS: TestRollbackFiler4 (0.03s)
+--- PASS: TestRollbackFiler4 (0.24s)
 PASS
-ok  	github.com/cznic/lldb	24.337s
+ok  	github.com/cznic/lldb	180.372s
    dh_testroot -O--buildsystem=golang
    dh_prep -O--buildsystem=golang
    debian/rules override_dh_auto_install
@@ -874,12 +910,14 @@
 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/574437/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/574437/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/2880695 and its subdirectories
-I: Current time: Tue Apr 14 12:52:03 -12 2026
-I: pbuilder-time-stamp: 1776214323
+I: removing directory /srv/workspace/pbuilder/574437 and its subdirectories
+I: Current time: Thu Mar 13 08:35:29 +14 2025
+I: pbuilder-time-stamp: 1741804529