Diff of the two buildlogs:

--
--- b1/build.log	2024-11-13 14:06:29.963093015 +0000
+++ b2/build.log	2024-11-13 14:07:47.140332577 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Nov 13 02:02:21 -12 2024
-I: pbuilder-time-stamp: 1731506541
+I: Current time: Wed Dec 17 10:29:31 +14 2025
+I: pbuilder-time-stamp: 1765916971
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -25,52 +25,84 @@
 dpkg-source: info: unpacking golang-github-araddon-gou_0.0~git20180509.7db4be5-1.1.debian.tar.xz
 I: using fakeroot in build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/1916694/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/1544724/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 Dec 16 20:29 /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/1544724/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/1544724/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='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]="32" [3]="1" [4]="release" [5]="x86_64-pc-linux-gnu")
+  BASH_VERSION='5.2.32(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=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='c8099d7a61954578934db2c1c5ac144d'
-  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='1916694'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=0f2c5a2228ad4534b2d9e2294d4df843
+  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=1544724
   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.OvqgGNxN/pbuilderrc_v5nu --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.OvqgGNxN/b1 --logfile b1/build.log golang-github-araddon-gou_0.0~git20180509.7db4be5-1.1.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.OvqgGNxN/pbuilderrc_QRzs --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.OvqgGNxN/b2 --logfile b2/build.log golang-github-araddon-gou_0.0~git20180509.7db4be5-1.1.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 6.1.0-27-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.115-1 (2024-11-01) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.10.11+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.10.11-1~bpo12+1 (2024-10-03) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Aug  4 21:30 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/1916694/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Aug  4  2024 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/1544724/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -152,7 +184,7 @@
 Get: 38 http://deb.debian.org/debian unstable/main amd64 golang-github-stretchr-objx-dev all 0.5.2-1 [25.5 kB]
 Get: 39 http://deb.debian.org/debian unstable/main amd64 golang-gopkg-yaml.v3-dev all 3.0.1-3 [74.3 kB]
 Get: 40 http://deb.debian.org/debian unstable/main amd64 golang-github-stretchr-testify-dev all 1.9.0-1 [74.7 kB]
-Fetched 66.2 MB in 3s (25.6 MB/s)
+Fetched 66.2 MB in 1s (83.0 MB/s)
 debconf: delaying package configuration, since apt-utils is not installed
 Selecting previously unselected package sensible-utils.
 (Reading database ... 
(Reading database ... 5%
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(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19969 files and directories currently installed.)
@@ -332,7 +364,11 @@
 fakeroot is already the newest version (1.36-1).
 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-araddon-gou-0.0~git20180509.7db4be5/ && 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-araddon-gou_0.0~git20180509.7db4be5-1.1_source.changes
+I: user script /srv/workspace/pbuilder/1544724/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/1544724/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-araddon-gou-0.0~git20180509.7db4be5/ && 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-araddon-gou_0.0~git20180509.7db4be5-1.1_source.changes
 dpkg-buildpackage: info: source package golang-github-araddon-gou
 dpkg-buildpackage: info: source version 0.0~git20180509.7db4be5-1.1
 dpkg-buildpackage: info: source distribution unstable
@@ -350,93 +386,93 @@
    dh_autoreconf -O--buildsystem=golang
    dh_auto_configure -O--buildsystem=golang
    dh_auto_build -O--buildsystem=golang
-	cd obj-x86_64-linux-gnu && go install -trimpath -v -p 20 github.com/araddon/gou
-math/bits
-internal/goarch
-internal/msan
-internal/race
-crypto/internal/alias
-unicode/utf8
-internal/asan
-internal/unsafeheader
-internal/goos
-internal/itoa
-internal/byteorder
+	cd obj-x86_64-linux-gnu && go install -trimpath -v -p 42 github.com/araddon/gou
 internal/godebugs
-internal/goexperiment
-internal/profilerecord
+internal/byteorder
+crypto/internal/alias
+container/list
 internal/coverage/rtcov
+unicode/utf16
 cmp
+vendor/golang.org/x/crypto/internal/alias
+vendor/golang.org/x/crypto/cryptobyte/asn1
+internal/nettrace
+math/bits
+internal/goarch
 unicode
-sync/atomic
+log/internal
+crypto/internal/boring/sig
 crypto/subtle
+internal/unsafeheader
+sync/atomic
+internal/profilerecord
+unicode/utf8
 encoding
+internal/itoa
+internal/race
+internal/runtime/syscall
+internal/asan
+internal/msan
+internal/runtime/atomic
+internal/goos
 internal/cpu
+internal/goexperiment
 runtime/internal/math
 internal/abi
 runtime/internal/sys
-unicode/utf16
 internal/chacha8rand
-internal/runtime/syscall
-crypto/internal/boring/sig
-log/internal
-internal/runtime/atomic
-container/list
-vendor/golang.org/x/crypto/internal/alias
-internal/nettrace
-vendor/golang.org/x/crypto/cryptobyte/asn1
 internal/bytealg
-math
 internal/runtime/exithook
+math
 internal/stringslite
 runtime
-internal/reflectlite
 iter
 internal/weak
+internal/reflectlite
 sync
-slices
 maps
-internal/bisect
+slices
 internal/testlog
 internal/singleflight
+internal/bisect
 runtime/cgo
-errors
 internal/godebug
-io
-internal/oserror
+errors
 sort
+internal/oserror
 path
+io
+vendor/golang.org/x/net/dns/dnsmessage
 crypto/internal/edwards25519/field
 math/rand
-strconv
-vendor/golang.org/x/net/dns/dnsmessage
 math/rand/v2
+strconv
 crypto/internal/nistec/fiat
 syscall
 crypto/internal/edwards25519
-bytes
-hash
+internal/concurrent
 crypto/internal/randutil
+hash
+bytes
 strings
-hash/crc32
-internal/concurrent
 unique
+hash/crc32
 crypto
-reflect
 crypto/rc4
+net/netip
+reflect
 vendor/golang.org/x/text/transform
 crypto/cipher
 crypto/md5
-net/netip
-crypto/des
-crypto/internal/boring
 net/http/internal/ascii
 bufio
-crypto/aes
+crypto/internal/boring
+crypto/des
 crypto/hmac
 crypto/sha512
 crypto/sha1
 crypto/sha256
+crypto/aes
 vendor/golang.org/x/crypto/hkdf
 internal/syscall/execenv
 internal/syscall/unix
@@ -444,55 +480,55 @@
 context
 io/fs
 internal/poll
+internal/fmtsort
+encoding/binary
 internal/filepathlite
 embed
-os
 crypto/internal/nistec
-internal/fmtsort
-encoding/binary
 encoding/base64
 vendor/golang.org/x/crypto/chacha20
 vendor/golang.org/x/crypto/internal/poly1305
-crypto/ecdh
+os
 encoding/pem
-fmt
+crypto/ecdh
 io/ioutil
-path/filepath
 vendor/golang.org/x/sys/cpu
+fmt
+path/filepath
 net
 vendor/golang.org/x/crypto/sha3
 vendor/golang.org/x/crypto/chacha20poly1305
-encoding/json
 log
-net/url
 encoding/hex
-mime
-net/http/internal
-math/big
-vendor/golang.org/x/net/http2/hpack
 mime/quotedprintable
+net/http/internal
 compress/flate
+encoding/json
+net/url
+mime
+vendor/golang.org/x/net/http2/hpack
 vendor/golang.org/x/text/unicode/norm
+math/big
 vendor/golang.org/x/text/unicode/bidi
 compress/gzip
 vendor/golang.org/x/text/secure/bidirule
 vendor/golang.org/x/net/idna
+crypto/internal/boring/bbig
 crypto/rand
+crypto/dsa
 crypto/elliptic
-encoding/asn1
 crypto/internal/bigmod
-crypto/internal/boring/bbig
-crypto/dsa
-crypto/ed25519
+encoding/asn1
 crypto/internal/hpke
 crypto/internal/mlkem768
+crypto/ed25519
 crypto/rsa
-vendor/golang.org/x/crypto/cryptobyte
 crypto/x509/pkix
+vendor/golang.org/x/crypto/cryptobyte
 crypto/ecdsa
+vendor/golang.org/x/net/http/httpproxy
 net/textproto
 crypto/x509
-vendor/golang.org/x/net/http/httpproxy
 vendor/golang.org/x/net/http/httpguts
 mime/multipart
 crypto/tls
@@ -500,12 +536,12 @@
 net/http
 github.com/araddon/gou
    dh_auto_test -O--buildsystem=golang
-	cd obj-x86_64-linux-gnu && go test -vet=off -v -p 20 github.com/araddon/gou
+	cd obj-x86_64-linux-gnu && go test -vet=off -v -p 42 github.com/araddon/gou
 === RUN   TestCoerce
 --- PASS: TestCoerce (0.00s)
 === RUN   TestJsonRawWriter
-2024/11/13 14:06:02.622682 jsonhelper_test.go:60: {}
-2024/11/13 14:06:02.622806 jsonhelper_test.go:62: "hello"
+2025/12/16 20:30:32.198091 jsonhelper_test.go:60: {}
+2025/12/16 20:30:32.198150 jsonhelper_test.go:62: "hello"
 --- PASS: TestJsonRawWriter (0.00s)
 === RUN   TestJsonHelper
 --- PASS: TestJsonHelper (0.00s)
@@ -518,17 +554,17 @@
 === RUN   TestJsonHelperGobEncoding
 --- PASS: TestJsonHelperGobEncoding (0.00s)
 === RUN   TestSetupLogToFile
---- PASS: TestSetupLogToFile (1.02s)
+--- PASS: TestSetupLogToFile (1.55s)
 === RUN   TestWaitFor
 --- PASS: TestWaitFor (1.00s)
 === RUN   TestThrottleer
---- PASS: TestThrottleer (2.12s)
+--- PASS: TestThrottleer (2.10s)
 === RUN   TestThrottler2
 --- PASS: TestThrottler2 (1.00s)
 === RUN   TestUid
 --- PASS: TestUid (0.00s)
 PASS
-ok  	github.com/araddon/gou	5.192s
+ok  	github.com/araddon/gou	5.675s
    create-stamp debian/debhelper-build-stamp
  fakeroot debian/rules binary
 dh binary --buildsystem=golang --with=golang
@@ -557,12 +593,14 @@
 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/1544724/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/1544724/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/1916694 and its subdirectories
-I: Current time: Wed Nov 13 02:06:29 -12 2024
-I: pbuilder-time-stamp: 1731506789
+I: removing directory /srv/workspace/pbuilder/1544724 and its subdirectories
+I: Current time: Wed Dec 17 10:30:46 +14 2025
+I: pbuilder-time-stamp: 1765917046