Diff of the two buildlogs:

--
--- b1/build.log	2025-01-26 10:20:33.266070323 +0000
+++ b2/build.log	2025-01-26 10:26:21.514322183 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sat Jan 25 22:13:59 -12 2025
-I: pbuilder-time-stamp: 1737886439
+I: Current time: Sun Mar  1 06:43:35 +14 2026
+I: pbuilder-time-stamp: 1772297015
 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-nebulouslabs-writeaheadlog_0.0~git20181203.20a05df-2.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/3501087/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/2161898/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 Feb 28 16:43 /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/2161898/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/2161898/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]="37" [3]="1" [4]="release" [5]="aarch64-unknown-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=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='f7d7c67f5f524c9db9fefe7da637ba7b'
-  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='3501087'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=b134b0b0528649259df3847057b882f6
+  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=2161898
   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.AegRBhx7/pbuilderrc_mmfH --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.AegRBhx7/b1 --logfile b1/build.log golang-github-nebulouslabs-writeaheadlog_0.0~git20181203.20a05df-2.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.AegRBhx7/pbuilderrc_TaK4 --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.AegRBhx7/b2 --logfile b2/build.log golang-github-nebulouslabs-writeaheadlog_0.0~git20181203.20a05df-2.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 codethink04-arm64 6.1.0-30-cloud-arm64 #1 SMP Debian 6.1.124-1 (2025-01-12) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-30-cloud-arm64 #1 SMP Debian 6.1.124-1 (2025-01-12) aarch64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Nov 22 14:40 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/3501087/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Nov 22  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/2161898/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -156,7 +188,7 @@
 Get: 41 http://deb.debian.org/debian unstable/main arm64 golang-golang-x-text-dev all 0.16.0-1 [4003 kB]
 Get: 42 http://deb.debian.org/debian unstable/main arm64 golang-golang-x-crypto-dev all 1:0.25.0-1 [1682 kB]
 Get: 43 http://deb.debian.org/debian unstable/main arm64 golang-github-nebulouslabs-fastrand-dev all 0.0~git20170512.60b6156-1 [8208 B]
-Fetched 68.9 MB in 0s (193 MB/s)
+Fetched 68.9 MB in 0s (209 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 ... 19946 files and directories currently installed.)
@@ -343,7 +375,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-nebulouslabs-writeaheadlog-0.0~git20181203.20a05df/ && 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-nebulouslabs-writeaheadlog_0.0~git20181203.20a05df-2_source.changes
+I: user script /srv/workspace/pbuilder/2161898/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/2161898/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-nebulouslabs-writeaheadlog-0.0~git20181203.20a05df/ && 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-nebulouslabs-writeaheadlog_0.0~git20181203.20a05df-2_source.changes
 dpkg-buildpackage: info: source package golang-github-nebulouslabs-writeaheadlog
 dpkg-buildpackage: info: source version 0.0~git20181203.20a05df-2
 dpkg-buildpackage: info: source distribution unstable
@@ -363,65 +399,65 @@
    dh_auto_build -O--builddirectory=_build -O--buildsystem=golang
 	cd _build && go install -trimpath -v -p 12 github.com/NebulousLabs/writeaheadlog
 internal/goarch
-internal/godebugs
-internal/profilerecord
-internal/coverage/rtcov
-internal/unsafeheader
 internal/race
+internal/unsafeheader
 internal/goos
+internal/goexperiment
+internal/coverage/rtcov
+internal/runtime/syscall
 internal/byteorder
+internal/godebugs
+internal/profilerecord
+sync/atomic
 internal/cpu
+internal/abi
 runtime/internal/math
-internal/goexperiment
+runtime/internal/sys
 unicode
-internal/runtime/syscall
-unicode/utf8
 math/bits
-internal/chacha8rand
 internal/itoa
-internal/abi
 cmp
-sync/atomic
 internal/asan
-runtime/internal/sys
+unicode/utf8
+internal/chacha8rand
 internal/msan
-internal/bytealg
-internal/runtime/atomic
 math
+internal/runtime/atomic
+internal/bytealg
 internal/runtime/exithook
 internal/stringslite
 runtime
 internal/reflectlite
-sync
 iter
+sync
 slices
 internal/bisect
 internal/testlog
 errors
 sort
-internal/godebug
 io
-strconv
 internal/oserror
 path
+strconv
+internal/godebug
 syscall
 bytes
 hash
 strings
-reflect
 crypto
+reflect
+internal/syscall/execenv
 time
 internal/syscall/unix
-internal/syscall/execenv
 io/fs
 internal/poll
 internal/filepathlite
-os
 encoding/binary
 internal/fmtsort
+os
 golang.org/x/crypto/blake2b
-fmt
 github.com/NebulousLabs/errors
+fmt
 io/ioutil
 github.com/NebulousLabs/writeaheadlog
    dh_auto_test -O--builddirectory=_build -O--buildsystem=golang
@@ -430,12 +466,12 @@
     page_test.go:11: not implemented
 --- SKIP: TestPageMarshalling (0.00s)
 === RUN   TestSilo
-    writeaheadlog_integration_test.go:638: Number of iterations: 23
-    writeaheadlog_integration_test.go:639: Max number of retries: 27
-    writeaheadlog_integration_test.go:640: Average number of retries: 4
-    writeaheadlog_integration_test.go:641: Average number of skipped txns: 5.043478260869565
-    writeaheadlog_integration_test.go:642: WAL size: 28614656 bytes
---- PASS: TestSilo (344.60s)
+    writeaheadlog_integration_test.go:638: Number of iterations: 24
+    writeaheadlog_integration_test.go:639: Max number of retries: 22
+    writeaheadlog_integration_test.go:640: Average number of retries: 2
+    writeaheadlog_integration_test.go:641: Average number of skipped txns: 2.4583333333333335
+    writeaheadlog_integration_test.go:642: WAL size: 31014912 bytes
+--- PASS: TestSilo (303.00s)
 === RUN   TestCommitFailed
 --- PASS: TestCommitFailed (0.00s)
 === RUN   TestMisleadingWrite
@@ -450,8 +486,8 @@
 === RUN   TestPayloadCorrupted2
 --- PASS: TestPayloadCorrupted2 (0.00s)
 === RUN   TestWalParallel
-    writeaheadlog_test.go:490: filesize: 1.359872 mb
-    writeaheadlog_test.go:491: used pages: 331
+    writeaheadlog_test.go:490: filesize: 3.432448 mb
+    writeaheadlog_test.go:491: used pages: 837
 --- PASS: TestWalParallel (0.01s)
 === RUN   TestPageRecycling
 --- PASS: TestPageRecycling (0.00s)
@@ -463,7 +499,7 @@
 === RUN   TestTransactionAppend
 --- PASS: TestTransactionAppend (0.00s)
 PASS
-ok  	github.com/NebulousLabs/writeaheadlog	344.670s
+ok  	github.com/NebulousLabs/writeaheadlog	303.032s
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--builddirectory=_build -O--buildsystem=golang
    dh_prep -O--builddirectory=_build -O--buildsystem=golang
@@ -490,12 +526,14 @@
 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/2161898/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/2161898/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/3501087 and its subdirectories
-I: Current time: Sat Jan 25 22:20:32 -12 2025
-I: pbuilder-time-stamp: 1737886832
+I: removing directory /srv/workspace/pbuilder/2161898 and its subdirectories
+I: Current time: Sun Mar  1 06:49:19 +14 2026
+I: pbuilder-time-stamp: 1772297359