Diff of the two buildlogs:

--
--- b1/build.log	2025-03-17 03:38:50.304722309 +0000
+++ b2/build.log	2025-03-17 03:43:26.648269929 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sun Mar 16 15:35:46 -12 2025
-I: pbuilder-time-stamp: 1742182546
+I: Current time: Mon Mar 17 17:38:59 +14 2025
+I: pbuilder-time-stamp: 1742182739
 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: applying disable-certfails.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/20962/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/12927/tmp/hooks/D01_modify_environment starting
+debug: Running on virt32a.
+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 17 03:39 /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/12927/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/12927/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='armhf'
-  DEBIAN_FRONTEND='noninteractive'
-  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=3 '
-  DISTRIBUTION='trixie'
-  HOME='/root'
-  HOST_ARCH='armhf'
+  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]="arm-unknown-linux-gnueabihf")
+  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=armhf
+  DEBIAN_FRONTEND=noninteractive
+  DEB_BUILD_OPTIONS='buildinfo=+all reproducible=+all parallel=4 '
+  DIRSTACK=()
+  DISTRIBUTION=trixie
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=arm
+  HOST_ARCH=armhf
   IFS=' 	
   '
-  INVOCATION_ID='e697d34bf0aa4a43ae9378e5757d5ccc'
-  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='20962'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=80e9b20a001149fa90c6a0c5c4b20301
+  LANG=C
+  LANGUAGE=it_CH:it
+  LC_ALL=C
+  MACHTYPE=arm-unknown-linux-gnueabihf
+  MAIL=/var/mail/root
+  OPTERR=1
+  OPTIND=1
+  OSTYPE=linux-gnueabihf
+  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=12927
   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.Hs0vDgmU/pbuilderrc_mCoU --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.Hs0vDgmU/b1 --logfile b1/build.log golang-github-github-smimesign_0.2.0+dfsg-3.dsc'
-  SUDO_GID='110'
-  SUDO_UID='103'
-  SUDO_USER='jenkins'
-  TERM='unknown'
-  TZ='/usr/share/zoneinfo/Etc/GMT+12'
-  USER='root'
-  _='/usr/bin/systemd-run'
-  http_proxy='http://10.0.0.15:3142/'
+  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.Hs0vDgmU/pbuilderrc_AzSx --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.Hs0vDgmU/b2 --logfile b2/build.log golang-github-github-smimesign_0.2.0+dfsg-3.dsc'
+  SUDO_GID=113
+  SUDO_UID=107
+  SUDO_USER=jenkins
+  TERM=unknown
+  TZ=/usr/share/zoneinfo/Etc/GMT-14
+  UID=0
+  USER=root
+  _='I: set'
+  http_proxy=http://10.0.0.15:3142/
 I: uname -a
-  Linux virt64z 6.1.0-32-arm64 #1 SMP Debian 6.1.129-1 (2025-03-06) aarch64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-31-armmp-lpae #1 SMP Debian 6.1.128-1 (2025-02-07) armv7l GNU/Linux
 I: ls -l /bin
   lrwxrwxrwx 1 root root 7 Mar  4 11:20 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/20962/tmp/hooks/D02_print_environment finished
+I: user script /srv/workspace/pbuilder/12927/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -174,7 +206,7 @@
 Get: 48 http://deb.debian.org/debian trixie/main armhf golang-golang-x-text-dev all 0.22.0-1 [3995 kB]
 Get: 49 http://deb.debian.org/debian trixie/main armhf golang-golang-x-crypto-dev all 1:0.25.0-1 [1682 kB]
 Get: 50 http://deb.debian.org/debian trixie/main armhf golang-golang-x-xerrors-dev all 0.0~git20231012.104605a-1 [14.6 kB]
-Fetched 74.1 MB in 6s (11.7 MB/s)
+Fetched 74.1 MB in 5s (15.4 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 ... 19528 files and directories currently installed.)
@@ -396,7 +428,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/golang-github-github-smimesign-0.2.0+dfsg/ && 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-github-smimesign_0.2.0+dfsg-3_source.changes
+I: user script /srv/workspace/pbuilder/12927/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for trixie
+I: user script /srv/workspace/pbuilder/12927/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/golang-github-github-smimesign-0.2.0+dfsg/ && 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-github-smimesign_0.2.0+dfsg-3_source.changes
 dpkg-buildpackage: info: source package golang-github-github-smimesign
 dpkg-buildpackage: info: source version 0.2.0+dfsg-3
 dpkg-buildpackage: info: source distribution unstable
@@ -414,17 +450,17 @@
    dh_autoreconf -O--builddirectory=_build -O--buildsystem=golang
    dh_auto_configure -O--builddirectory=_build -O--buildsystem=golang
    dh_auto_build -O--builddirectory=_build -O--buildsystem=golang
-	cd _build && go install -trimpath -v -p 3 github.com/github/smimesign/ietf-cms github.com/github/smimesign/fakeca
+	cd _build && go install -trimpath -v -p 4 github.com/github/smimesign/ietf-cms github.com/github/smimesign/fakeca
 internal/unsafeheader
 internal/goarch
-internal/cpu
-internal/abi
 internal/byteorder
-internal/chacha8rand
-internal/bytealg
+internal/cpu
 internal/coverage/rtcov
+internal/abi
 internal/godebugs
+internal/chacha8rand
 internal/goexperiment
+internal/bytealg
 internal/goos
 internal/profilerecord
 internal/runtime/atomic
@@ -433,88 +469,96 @@
 internal/runtime/math
 internal/runtime/sys
 internal/runtime/syscall
-internal/runtime/exithook
 internal/stringslite
 sync/atomic
 math/bits
-internal/race
-internal/runtime/maps
+internal/runtime/exithook
 unicode
-internal/sync
 unicode/utf8
 math
 crypto/internal/fips140/alias
 crypto/internal/fips140deps/byteorder
 crypto/internal/fips140deps/cpu
-runtime
 internal/itoa
+internal/race
 cmp
 crypto/internal/boring/sig
+internal/runtime/maps
+internal/sync
 unicode/utf16
 vendor/golang.org/x/crypto/cryptobyte/asn1
 internal/nettrace
 container/list
 vendor/golang.org/x/crypto/internal/alias
 log/internal
+runtime
 iter
+crypto/internal/fips140/subtle
 internal/reflectlite
 sync
-crypto/internal/fips140/subtle
 slices
 crypto/subtle
 maps
 weak
 errors
 sort
+internal/testlog
 internal/bisect
 io
 strconv
+internal/godebug
 bytes
 hash
-internal/godebug
 strings
 crypto/internal/fips140deps/godebug
-crypto
 internal/oserror
-path
 syscall
-internal/testlog
-math/rand/v2
+path
+crypto
 crypto/internal/fips140
+math/rand/v2
+reflect
 crypto/internal/fips140/sha256
 crypto/internal/fips140/sha3
 crypto/internal/fips140/sha512
 crypto/internal/randutil
+math/rand
 crypto/internal/fips140/hmac
-reflect
 crypto/internal/fips140/check
 crypto/internal/fips140/aes
-math/rand
-internal/syscall/unix
-time
-internal/syscall/execenv
 crypto/internal/fips140/nistec/fiat
-io/fs
-internal/filepathlite
-internal/poll
-internal/fmtsort
 crypto/internal/fips140/edwards25519/field
 crypto/internal/impl
 crypto/internal/fips140/bigmod
-os
-crypto/internal/fips140/nistec
+internal/syscall/unix
+time
+internal/syscall/execenv
 crypto/sha3
 crypto/internal/fips140hash
 crypto/internal/fips140/edwards25519
+vendor/golang.org/x/net/dns/dnsmessage
+io/fs
+internal/poll
+internal/filepathlite
+internal/fmtsort
 encoding/binary
+os
+context
+crypto/internal/fips140/nistec
+internal/singleflight
+unique
+encoding/base64
+net/netip
+encoding/pem
+runtime/cgo
 crypto/internal/sysrand
 crypto/internal/entropy
 crypto/internal/fips140/drbg
 crypto/internal/fips140/aes/gcm
-fmt
 crypto/internal/fips140only
-crypto/cipher
+fmt
 crypto/internal/fips140/ecdh
+crypto/cipher
 crypto/internal/fips140/ecdsa
 crypto/internal/boring
 crypto/aes
@@ -522,62 +566,54 @@
 crypto/ecdh
 crypto/sha512
 crypto/internal/fips140/ed25519
-math/big
 crypto/md5
 crypto/internal/fips140/rsa
+math/big
 crypto/sha1
 crypto/sha256
 encoding/hex
-encoding/base64
-context
-encoding/pem
-vendor/golang.org/x/net/dns/dnsmessage
-internal/singleflight
-unique
-net/netip
-crypto/dsa
-crypto/elliptic
-crypto/internal/boring/bbig
-encoding/asn1
-crypto/rand
-crypto/ed25519
-crypto/rsa
-vendor/golang.org/x/crypto/cryptobyte
-crypto/x509/pkix
-runtime/cgo
 net/url
-crypto/ecdsa
 path/filepath
 bufio
 hash/crc32
-compress/flate
 crypto/hmac
 crypto/internal/fips140/hkdf
+compress/flate
 crypto/internal/fips140/mlkem
-compress/gzip
+net
 crypto/internal/fips140/tls12
+compress/gzip
 crypto/internal/fips140/tls13
+crypto/dsa
+crypto/elliptic
+crypto/internal/boring/bbig
+encoding/asn1
+crypto/rand
+crypto/ed25519
+crypto/rsa
 vendor/golang.org/x/crypto/chacha20
 vendor/golang.org/x/crypto/internal/poly1305
 crypto/rc4
 crypto/tls/internal/fips140tls
+vendor/golang.org/x/crypto/cryptobyte
+crypto/x509/pkix
 vendor/golang.org/x/crypto/chacha20poly1305
 vendor/golang.org/x/text/transform
 crypto/internal/hpke
 log
 vendor/golang.org/x/text/unicode/norm
+crypto/ecdsa
 vendor/golang.org/x/text/unicode/bidi
-net
 vendor/golang.org/x/text/secure/bidirule
 vendor/golang.org/x/net/http2/hpack
-vendor/golang.org/x/net/idna
 mime
+vendor/golang.org/x/net/idna
 mime/quotedprintable
 net/http/internal
 net/http/internal/ascii
 os/exec
-net/textproto
 vendor/golang.org/x/net/http/httpproxy
+net/textproto
 crypto/x509
 vendor/golang.org/x/net/http/httpguts
 mime/multipart
@@ -590,19 +626,19 @@
 github.com/github/smimesign/ietf-cms/timestamp
 github.com/github/smimesign/ietf-cms
    dh_auto_test -O--builddirectory=_build -O--buildsystem=golang
-	cd _build && go test -vet=off -v -p 3 github.com/github/smimesign/ietf-cms github.com/github/smimesign/fakeca
+	cd _build && go test -vet=off -v -p 4 github.com/github/smimesign/ietf-cms github.com/github/smimesign/fakeca
 === RUN   TestSign
---- PASS: TestSign (0.03s)
+--- PASS: TestSign (0.04s)
 === RUN   TestSignDetached
 --- PASS: TestSignDetached (0.03s)
 === RUN   TestSignDetachedWithOpenSSL
---- PASS: TestSignDetachedWithOpenSSL (0.03s)
+--- PASS: TestSignDetachedWithOpenSSL (0.05s)
 === RUN   TestSignRemoveHeaders
---- PASS: TestSignRemoveHeaders (0.03s)
+--- PASS: TestSignRemoveHeaders (0.04s)
 === RUN   TestAddTimestamps
---- PASS: TestAddTimestamps (0.19s)
+--- PASS: TestAddTimestamps (0.25s)
 === RUN   TestTimestampsVerifications
---- PASS: TestTimestampsVerifications (1.86s)
+--- PASS: TestTimestampsVerifications (1.42s)
 === RUN   TestVerify
 --- PASS: TestVerify (0.00s)
 === RUN   TestVerifyGPGSMAttached
@@ -616,42 +652,42 @@
 === RUN   TestVerifyOpenSSLDetached
 --- PASS: TestVerifyOpenSSLDetached (0.00s)
 === RUN   TestVerifyOutlookDetached
---- PASS: TestVerifyOutlookDetached (0.05s)
+--- PASS: TestVerifyOutlookDetached (0.06s)
 === RUN   TestVerifySmimesignAttachedWithTimestamp
     verify_test.go:158: Disabling cert FTBFS problem.  https://bugs.debian.org/1091500
 --- SKIP: TestVerifySmimesignAttachedWithTimestamp (0.00s)
 === RUN   TestVerifyChain
---- PASS: TestVerifyChain (0.04s)
+--- PASS: TestVerifyChain (0.06s)
 === RUN   TestVerifyDSAWithSHA1
 --- PASS: TestVerifyDSAWithSHA1 (0.00s)
 PASS
-ok  	github.com/github/smimesign/ietf-cms	10.456s
+ok  	github.com/github/smimesign/ietf-cms	12.893s
 === RUN   TestDefaults
---- PASS: TestDefaults (2.53s)
+--- PASS: TestDefaults (7.03s)
 === RUN   TestIntermediate
---- PASS: TestIntermediate (6.30s)
+--- PASS: TestIntermediate (3.89s)
 === RUN   TestSubject
---- PASS: TestSubject (3.56s)
+--- PASS: TestSubject (5.05s)
 === RUN   TestNextSerialNumber
---- PASS: TestNextSerialNumber (7.07s)
+--- PASS: TestNextSerialNumber (2.73s)
 === RUN   TestPrivateKey
 --- PASS: TestPrivateKey (0.01s)
 === RUN   TestIssuer
---- PASS: TestIssuer (8.71s)
+--- PASS: TestIssuer (5.65s)
 === RUN   TestIsCA
---- PASS: TestIsCA (2.26s)
+--- PASS: TestIsCA (8.39s)
 === RUN   TestChain
---- PASS: TestChain (5.81s)
+--- PASS: TestChain (7.14s)
 === RUN   TestChainPool
---- PASS: TestChainPool (6.71s)
+--- PASS: TestChainPool (13.21s)
 === RUN   TestPFX
---- PASS: TestPFX (1.35s)
+--- PASS: TestPFX (7.49s)
 === RUN   TestAIA
---- PASS: TestAIA (3.37s)
+--- PASS: TestAIA (4.29s)
 === RUN   TestKeyUsage
---- PASS: TestKeyUsage (3.39s)
+--- PASS: TestKeyUsage (2.63s)
 PASS
-ok  	github.com/github/smimesign/fakeca	51.057s
+ok  	github.com/github/smimesign/fakeca	67.519s
    create-stamp debian/debhelper-build-stamp
    dh_testroot -O--builddirectory=_build -O--buildsystem=golang
    dh_prep -O--builddirectory=_build -O--buildsystem=golang
@@ -678,12 +714,14 @@
 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/12927/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/12927/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/20962 and its subdirectories
-I: Current time: Sun Mar 16 15:38:46 -12 2025
-I: pbuilder-time-stamp: 1742182726
+I: removing directory /srv/workspace/pbuilder/12927 and its subdirectories
+I: Current time: Mon Mar 17 17:43:22 +14 2025
+I: pbuilder-time-stamp: 1742183002