Diff of the two buildlogs:

--
--- b1/build.log	2024-10-31 08:57:33.994169932 +0000
+++ b2/build.log	2024-10-31 08:59:11.562700697 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Dec  3 03:13:22 -12 2025
-I: pbuilder-time-stamp: 1764774802
+I: Current time: Thu Oct 31 22:57:41 +14 2024
+I: pbuilder-time-stamp: 1730365061
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -26,54 +26,86 @@
 dpkg-source: info: unpacking golang-github-docker-spdystream_0.5.0-1.debian.tar.xz
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/31557/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/43057/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos2-i386.
+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 31 08:57 /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/43057/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/43057/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='i386'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=22 '
-  DISTRIBUTION='unstable'
-  HOME='/root'
-  HOST_ARCH='i386'
+  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]="i686-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=i386
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=10 '
+  DIRSTACK=()
+  DISTRIBUTION=unstable
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=i686
+  HOST_ARCH=i386
   IFS=' 	
   '
-  INVOCATION_ID='62564fc1cf994068bffc119919ceea96'
-  LANG='C'
-  LANGUAGE='en_US:en'
-  LC_ALL='C'
-  LD_LIBRARY_PATH='/usr/lib/libeatmydata'
-  LD_PRELOAD='libeatmydata.so'
-  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='31557'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=403d18306c474a75bbcdd81f44e3eccc
+  LANG=C
+  LANGUAGE=de_CH:de
+  LC_ALL=C
+  LD_LIBRARY_PATH=/usr/lib/libeatmydata
+  LD_PRELOAD=libeatmydata.so
+  MACHTYPE=i686-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=43057
   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.D1STis5p/pbuilderrc_CGW9 --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.D1STis5p/b1 --logfile b1/build.log golang-github-docker-spdystream_0.5.0-1.dsc'
-  SUDO_GID='112'
-  SUDO_UID='107'
-  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.D1STis5p/pbuilderrc_qdTx --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.D1STis5p/b2 --logfile b2/build.log golang-github-docker-spdystream_0.5.0-1.dsc'
+  SUDO_GID=112
+  SUDO_UID=107
+  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 ionos6-i386 6.1.0-26-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.112-1 (2024-09-30) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-26-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.112-1 (2024-09-30) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Aug  4  2024 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/31557/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Aug  4 21:30 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/43057/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -148,7 +180,7 @@
 Get: 33 http://deb.debian.org/debian unstable/main i386 golang-src all 2:1.23~2 [5088 B]
 Get: 34 http://deb.debian.org/debian unstable/main i386 golang-go i386 2:1.23~2 [44.3 kB]
 Get: 35 http://deb.debian.org/debian unstable/main i386 golang-any i386 2:1.23~2 [5168 B]
-Fetched 64.4 MB in 6s (10.8 MB/s)
+Fetched 64.4 MB in 1s (53.7 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 ... 19955 files and directories currently installed.)
@@ -303,7 +335,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-docker-spdystream-0.5.0/ && 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-docker-spdystream_0.5.0-1_source.changes
+I: user script /srv/workspace/pbuilder/43057/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/43057/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-docker-spdystream-0.5.0/ && 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-docker-spdystream_0.5.0-1_source.changes
 dpkg-buildpackage: info: source package golang-github-docker-spdystream
 dpkg-buildpackage: info: source version 0.5.0-1
 dpkg-buildpackage: info: source distribution unstable
@@ -321,109 +357,109 @@
    dh_autoreconf -O--buildsystem=golang
    dh_auto_configure -O--buildsystem=golang
    dh_auto_build -O--buildsystem=golang
-	cd obj-i686-linux-gnu && go install -trimpath -v -p 22 github.com/moby/spdystream github.com/moby/spdystream/spdy
-internal/byteorder
+	cd obj-i686-linux-gnu && go install -trimpath -v -p 10 github.com/moby/spdystream github.com/moby/spdystream/spdy
+internal/goarch
 internal/unsafeheader
-internal/itoa
-internal/coverage/rtcov
-math/bits
 internal/profilerecord
-internal/asan
-crypto/internal/alias
+internal/godebugs
+internal/coverage/rtcov
 internal/goos
+internal/byteorder
+internal/cpu
+internal/abi
+internal/runtime/syscall
+runtime/internal/math
+internal/runtime/atomic
+math/bits
 internal/goexperiment
-internal/goarch
-container/list
+runtime/internal/sys
+cmp
 internal/race
+internal/itoa
+internal/chacha8rand
+unicode/utf8
+sync/atomic
+internal/asan
 internal/msan
-internal/godebugs
-cmp
 unicode
-unicode/utf8
+container/list
+crypto/internal/alias
+math
+internal/bytealg
+crypto/internal/boring/sig
 unicode/utf16
+internal/runtime/exithook
 vendor/golang.org/x/crypto/cryptobyte/asn1
-sync/atomic
-internal/runtime/syscall
 vendor/golang.org/x/crypto/internal/alias
 internal/nettrace
 log/internal
-crypto/internal/boring/sig
-runtime/internal/math
-internal/abi
-internal/runtime/atomic
-runtime/internal/sys
-math
-internal/cpu
-internal/bytealg
-internal/runtime/exithook
-internal/chacha8rand
 internal/stringslite
 runtime
 iter
+internal/reflectlite
 internal/weak
 crypto/subtle
-internal/reflectlite
 sync
 maps
 slices
-internal/singleflight
 internal/bisect
+internal/singleflight
 internal/testlog
-errors
-sort
 runtime/cgo
+internal/godebug
+sort
+errors
+io
+strconv
 internal/oserror
 path
-io
-crypto/internal/edwards25519/field
-internal/godebug
-math/rand/v2
 vendor/golang.org/x/net/dns/dnsmessage
-strconv
+math/rand
+crypto/internal/edwards25519/field
 crypto/internal/nistec/fiat
-crypto/internal/edwards25519
-internal/concurrent
-unique
 syscall
+math/rand/v2
+crypto/internal/edwards25519
+container/heap
 bytes
+strings
 hash
 crypto/internal/randutil
-math/rand
-strings
 hash/adler32
-container/heap
 hash/crc32
-net/http/internal/ascii
-bufio
+internal/concurrent
+unique
 vendor/golang.org/x/text/transform
 crypto/cipher
-crypto/des
-net/netip
 reflect
 crypto
-crypto/rc4
+bufio
 crypto/md5
+crypto/rc4
+net/http/internal/ascii
+net/netip
 crypto/internal/boring
-crypto/hmac
-crypto/sha256
+crypto/des
 crypto/sha512
-crypto/sha1
 crypto/aes
+crypto/hmac
+crypto/sha1
 vendor/golang.org/x/crypto/hkdf
-internal/syscall/execenv
-time
+crypto/sha256
 internal/syscall/unix
+time
+internal/syscall/execenv
 crypto/internal/nistec
-context
 io/fs
+context
 internal/poll
+internal/filepathlite
 internal/fmtsort
 encoding/binary
-internal/filepathlite
 crypto/ecdh
 os
-encoding/base64
 vendor/golang.org/x/crypto/chacha20
+encoding/base64
 vendor/golang.org/x/crypto/internal/poly1305
 vendor/golang.org/x/crypto/chacha20poly1305
 encoding/pem
@@ -432,36 +468,36 @@
 vendor/golang.org/x/sys/cpu
 net
 vendor/golang.org/x/crypto/sha3
-net/http/internal
 encoding/hex
-log
-mime/quotedprintable
 net/url
+compress/flate
+log
 mime
 vendor/golang.org/x/net/http2/hpack
-compress/flate
+mime/quotedprintable
 vendor/golang.org/x/text/unicode/norm
 math/big
+net/http/internal
 vendor/golang.org/x/text/unicode/bidi
 compress/zlib
 compress/gzip
 vendor/golang.org/x/text/secure/bidirule
-crypto/dsa
-crypto/internal/boring/bbig
+vendor/golang.org/x/net/idna
 crypto/rand
-crypto/internal/bigmod
+crypto/internal/boring/bbig
 crypto/elliptic
+crypto/internal/bigmod
+crypto/dsa
 encoding/asn1
-vendor/golang.org/x/net/idna
-crypto/x509/pkix
-vendor/golang.org/x/crypto/cryptobyte
 crypto/ed25519
 crypto/internal/hpke
 crypto/internal/mlkem768
 crypto/rsa
+crypto/x509/pkix
+vendor/golang.org/x/crypto/cryptobyte
 crypto/ecdsa
-vendor/golang.org/x/net/http/httpproxy
 net/textproto
+vendor/golang.org/x/net/http/httpproxy
 crypto/x509
 vendor/golang.org/x/net/http/httpguts
 mime/multipart
@@ -471,7 +507,7 @@
 github.com/moby/spdystream/spdy
 github.com/moby/spdystream
    dh_auto_test -O--buildsystem=golang
-	cd obj-i686-linux-gnu && go test -vet=off -v -p 22 github.com/moby/spdystream github.com/moby/spdystream/spdy
+	cd obj-i686-linux-gnu && go test -vet=off -v -p 10 github.com/moby/spdystream github.com/moby/spdystream/spdy
 === RUN   TestPriorityQueueOrdering
 --- PASS: TestPriorityQueueOrdering (0.00s)
 === RUN   TestPriorityQueueSync
@@ -479,13 +515,13 @@
 === RUN   TestPriorityQueueBlocking
 --- PASS: TestPriorityQueueBlocking (0.00s)
 === RUN   TestSpdyStreams
---- PASS: TestSpdyStreams (0.01s)
+--- PASS: TestSpdyStreams (0.03s)
 === RUN   TestPing
 --- PASS: TestPing (0.00s)
 === RUN   TestHalfClose
---- PASS: TestHalfClose (0.72s)
+--- PASS: TestHalfClose (0.00s)
 === RUN   TestUnexpectedRemoteConnectionClosed
---- PASS: TestUnexpectedRemoteConnectionClosed (1.98s)
+--- PASS: TestUnexpectedRemoteConnectionClosed (0.01s)
 === RUN   TestCloseNotification
 --- PASS: TestCloseNotification (0.00s)
 === RUN   TestIdleShutdownRace
@@ -499,7 +535,7 @@
 === RUN   TestIdleWithData
 --- PASS: TestIdleWithData (0.12s)
 === RUN   TestIdleRace
---- PASS: TestIdleRace (0.01s)
+--- PASS: TestIdleRace (0.02s)
 === RUN   TestHalfClosedIdleTimeout
 --- PASS: TestHalfClosedIdleTimeout (0.02s)
 === RUN   TestStreamReset
@@ -509,7 +545,7 @@
 === RUN   TestFramingAfterRemoteConnectionClosed
 --- PASS: TestFramingAfterRemoteConnectionClosed (0.00s)
 === RUN   TestGoAwayRace
---- PASS: TestGoAwayRace (0.05s)
+--- PASS: TestGoAwayRace (0.00s)
 === RUN   TestSetIdleTimeoutAfterRemoteConnectionClosed
 --- PASS: TestSetIdleTimeoutAfterRemoteConnectionClosed (0.00s)
 === RUN   TestClientConnectionStopsServingAfterGoAway
@@ -517,13 +553,13 @@
 === RUN   TestStreamReadUnblocksAfterCloseThenReset
 --- PASS: TestStreamReadUnblocksAfterCloseThenReset (0.00s)
 PASS
-ok  	github.com/moby/spdystream	2.992s
+ok  	github.com/moby/spdystream	0.301s
 === RUN   TestHeaderParsing
 --- PASS: TestHeaderParsing (0.00s)
 === RUN   TestCreateParseSynStreamFrameCompressionDisable
 --- PASS: TestCreateParseSynStreamFrameCompressionDisable (0.00s)
 === RUN   TestCreateParseSynStreamFrameCompressionEnable
---- PASS: TestCreateParseSynStreamFrameCompressionEnable (0.09s)
+--- PASS: TestCreateParseSynStreamFrameCompressionEnable (0.00s)
 === RUN   TestCreateParseSynReplyFrameCompressionDisable
 --- PASS: TestCreateParseSynReplyFrameCompressionDisable (0.00s)
 === RUN   TestCreateParseSynReplyFrameCompressionEnable
@@ -545,7 +581,7 @@
 === RUN   TestCreateParseDataFrame
 --- PASS: TestCreateParseDataFrame (0.00s)
 === RUN   TestCompressionContextAcrossFrames
---- PASS: TestCompressionContextAcrossFrames (0.00s)
+--- PASS: TestCompressionContextAcrossFrames (0.03s)
 === RUN   TestMultipleSPDYFrames
 --- PASS: TestMultipleSPDYFrames (0.00s)
 === RUN   TestReadMalformedZlibHeader
@@ -554,7 +590,7 @@
     spdy_test.go:633: TODO: update to work with SPDY3
 --- SKIP: TestNoZeroStreamId (0.00s)
 PASS
-ok  	github.com/moby/spdystream/spdy	1.144s
+ok  	github.com/moby/spdystream/spdy	0.043s
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--buildsystem=golang
    dh_prep -O--buildsystem=golang
@@ -581,12 +617,14 @@
 dpkg-buildpackage: info: binary-only upload (no source included)
 dpkg-genchanges: info: including full source code in upload
 I: copying local configuration
+I: user script /srv/workspace/pbuilder/43057/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/43057/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/31557 and its subdirectories
-I: Current time: Wed Dec  3 03:20:20 -12 2025
-I: pbuilder-time-stamp: 1764775220
+I: removing directory /srv/workspace/pbuilder/43057 and its subdirectories
+I: Current time: Thu Oct 31 22:59:10 +14 2024
+I: pbuilder-time-stamp: 1730365150