Diff of the two buildlogs:

--
--- b1/build.log	2023-04-30 06:43:28.896197795 +0000
+++ b2/build.log	2023-04-30 06:45:02.024110701 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Sat Apr 29 18:39:15 -12 2023
-I: pbuilder-time-stamp: 1682836755
+I: Current time: Sun Apr 30 20:43:37 +14 2023
+I: pbuilder-time-stamp: 1682837017
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/bookworm-reproducible-base.tgz]
 I: copying local configuration
@@ -16,7 +16,7 @@
 I: copying [./mbuffer_20230301+ds1.orig.tar.xz]
 I: copying [./mbuffer_20230301+ds1-1.debian.tar.xz]
 I: Extracting source
-gpgv: Signature made Thu Mar  2 06:30:35 2023 -12
+gpgv: Signature made Fri Mar  3 08:30:35 2023 +14
 gpgv:                using RSA key 2EE7A7A517FC124CF115C354651EEFB02527DF13
 gpgv:                issuer "roam@debian.org"
 gpgv: Can't check signature: No public key
@@ -38,135 +38,167 @@
 dpkg-source: info: applying verbose-test.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/713/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/26910/tmp/hooks/D01_modify_environment starting
+debug: Running on jtx1b.
+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 Apr 30 20:43 /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/26910/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/26910/tmp/hooks/D02_print_environment starting
 I: set
-  BUILDDIR='/build'
-  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='bookworm'
-  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]="15" [3]="1" [4]="release" [5]="arm-unknown-linux-gnueabihf")
+  BASH_VERSION='5.2.15(1)-release'
+  BUILDDIR=/build
+  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=bookworm
+  EUID=0
+  FUNCNAME=([0]="Echo" [1]="main")
+  GROUPS=()
+  HOME=/root
+  HOSTNAME=i-capture-the-hostname
+  HOSTTYPE=arm
+  HOST_ARCH=armhf
   IFS=' 	
   '
-  INVOCATION_ID='5c854dda7349404b8b241b1a32ebc08d'
-  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='713'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=ce1deb8cf2c14aec9e900e202f79e549
+  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=26910
   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.UqJy2hX5/pbuilderrc_I5Qr --distribution bookworm --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.UqJy2hX5/b1 --logfile b1/build.log mbuffer_20230301+ds1-1.dsc'
-  SUDO_GID='113'
-  SUDO_UID='107'
-  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.UqJy2hX5/pbuilderrc_8ZPJ --distribution bookworm --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/bookworm-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.UqJy2hX5/b2 --logfile b2/build.log --extrapackages usrmerge mbuffer_20230301+ds1-1.dsc'
+  SUDO_GID=114
+  SUDO_UID=110
+  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 cbxi4a 5.10.0-21-armmp #1 SMP Debian 5.10.162-1 (2023-01-21) armv7l GNU/Linux
+  Linux i-capture-the-hostname 5.10.0-21-arm64 #1 SMP Debian 5.10.162-1 (2023-01-21) aarch64 GNU/Linux
 I: ls -l /bin
   total 5072
-  -rwxr-xr-x 1 root root 838488 Apr 23 09:24 bash
-  -rwxr-xr-x 3 root root  67144 Sep 18  2022 bunzip2
-  -rwxr-xr-x 3 root root  67144 Sep 18  2022 bzcat
-  lrwxrwxrwx 1 root root      6 Sep 18  2022 bzcmp -> bzdiff
-  -rwxr-xr-x 1 root root   2225 Sep 18  2022 bzdiff
-  lrwxrwxrwx 1 root root      6 Sep 18  2022 bzegrep -> bzgrep
-  -rwxr-xr-x 1 root root   4893 Nov 27  2021 bzexe
-  lrwxrwxrwx 1 root root      6 Sep 18  2022 bzfgrep -> bzgrep
-  -rwxr-xr-x 1 root root   3775 Sep 18  2022 bzgrep
-  -rwxr-xr-x 3 root root  67144 Sep 18  2022 bzip2
-  -rwxr-xr-x 1 root root  67112 Sep 18  2022 bzip2recover
-  lrwxrwxrwx 1 root root      6 Sep 18  2022 bzless -> bzmore
-  -rwxr-xr-x 1 root root   1297 Sep 18  2022 bzmore
-  -rwxr-xr-x 1 root root  67632 Sep 20  2022 cat
-  -rwxr-xr-x 1 root root  67676 Sep 20  2022 chgrp
-  -rwxr-xr-x 1 root root  67644 Sep 20  2022 chmod
-  -rwxr-xr-x 1 root root  67684 Sep 20  2022 chown
-  -rwxr-xr-x 1 root root 133532 Sep 20  2022 cp
-  -rwxr-xr-x 1 root root 132868 Jan  5 01:20 dash
-  -rwxr-xr-x 1 root root 133220 Sep 20  2022 date
-  -rwxr-xr-x 1 root root  67732 Sep 20  2022 dd
-  -rwxr-xr-x 1 root root  68104 Sep 20  2022 df
-  -rwxr-xr-x 1 root root 133632 Sep 20  2022 dir
-  -rwxr-xr-x 1 root root  59128 Mar 22 21:02 dmesg
-  lrwxrwxrwx 1 root root      8 Dec 19 01:33 dnsdomainname -> hostname
-  lrwxrwxrwx 1 root root      8 Dec 19 01:33 domainname -> hostname
-  -rwxr-xr-x 1 root root  67560 Sep 20  2022 echo
-  -rwxr-xr-x 1 root root     41 Jan 24 02:43 egrep
-  -rwxr-xr-x 1 root root  67548 Sep 20  2022 false
-  -rwxr-xr-x 1 root root     41 Jan 24 02:43 fgrep
-  -rwxr-xr-x 1 root root  55748 Mar 22 21:02 findmnt
-  -rwsr-xr-x 1 root root  26208 Mar 22 20:15 fusermount
-  -rwxr-xr-x 1 root root 128608 Jan 24 02:43 grep
-  -rwxr-xr-x 2 root root   2346 Apr  9  2022 gunzip
-  -rwxr-xr-x 1 root root   6447 Apr  9  2022 gzexe
-  -rwxr-xr-x 1 root root  64220 Apr  9  2022 gzip
-  -rwxr-xr-x 1 root root  67032 Dec 19 01:33 hostname
-  -rwxr-xr-x 1 root root  67720 Sep 20  2022 ln
-  -rwxr-xr-x 1 root root  35132 Mar 22 21:51 login
-  -rwxr-xr-x 1 root root 133632 Sep 20  2022 ls
-  -rwxr-xr-x 1 root root 136808 Mar 22 21:02 lsblk
-  -rwxr-xr-x 1 root root  67800 Sep 20  2022 mkdir
-  -rwxr-xr-x 1 root root  67764 Sep 20  2022 mknod
-  -rwxr-xr-x 1 root root  67596 Sep 20  2022 mktemp
-  -rwxr-xr-x 1 root root  38504 Mar 22 21:02 more
-  -rwsr-xr-x 1 root root  38496 Mar 22 21:02 mount
-  -rwxr-xr-x 1 root root   9824 Mar 22 21:02 mountpoint
-  -rwxr-xr-x 1 root root 133532 Sep 20  2022 mv
-  lrwxrwxrwx 1 root root      8 Dec 19 01:33 nisdomainname -> hostname
-  lrwxrwxrwx 1 root root     14 Apr  2 18:25 pidof -> /sbin/killall5
-  -rwxr-xr-x 1 root root  67608 Sep 20  2022 pwd
-  lrwxrwxrwx 1 root root      4 Apr 23 09:24 rbash -> bash
-  -rwxr-xr-x 1 root root  67600 Sep 20  2022 readlink
-  -rwxr-xr-x 1 root root  67672 Sep 20  2022 rm
-  -rwxr-xr-x 1 root root  67600 Sep 20  2022 rmdir
-  -rwxr-xr-x 1 root root  67400 Nov  2 04:31 run-parts
-  -rwxr-xr-x 1 root root 133372 Jan  5 07:55 sed
-  lrwxrwxrwx 1 root root      4 Jan  5 01:20 sh -> dash
-  -rwxr-xr-x 1 root root  67584 Sep 20  2022 sleep
-  -rwxr-xr-x 1 root root  67644 Sep 20  2022 stty
-  -rwsr-xr-x 1 root root  50800 Mar 22 21:02 su
-  -rwxr-xr-x 1 root root  67584 Sep 20  2022 sync
-  -rwxr-xr-x 1 root root 336764 Apr  6 02:25 tar
-  -rwxr-xr-x 1 root root  67144 Nov  2 04:31 tempfile
-  -rwxr-xr-x 1 root root 133224 Sep 20  2022 touch
-  -rwxr-xr-x 1 root root  67548 Sep 20  2022 true
-  -rwxr-xr-x 1 root root   9768 Mar 22 20:15 ulockmgr_server
-  -rwsr-xr-x 1 root root  22108 Mar 22 21:02 umount
-  -rwxr-xr-x 1 root root  67572 Sep 20  2022 uname
-  -rwxr-xr-x 2 root root   2346 Apr  9  2022 uncompress
-  -rwxr-xr-x 1 root root 133632 Sep 20  2022 vdir
-  -rwxr-xr-x 1 root root  42608 Mar 22 21:02 wdctl
-  lrwxrwxrwx 1 root root      8 Dec 19 01:33 ypdomainname -> hostname
-  -rwxr-xr-x 1 root root   1984 Apr  9  2022 zcat
-  -rwxr-xr-x 1 root root   1678 Apr  9  2022 zcmp
-  -rwxr-xr-x 1 root root   6460 Apr  9  2022 zdiff
-  -rwxr-xr-x 1 root root     29 Apr  9  2022 zegrep
-  -rwxr-xr-x 1 root root     29 Apr  9  2022 zfgrep
-  -rwxr-xr-x 1 root root   2081 Apr  9  2022 zforce
-  -rwxr-xr-x 1 root root   8103 Apr  9  2022 zgrep
-  -rwxr-xr-x 1 root root   2206 Apr  9  2022 zless
-  -rwxr-xr-x 1 root root   1842 Apr  9  2022 zmore
-  -rwxr-xr-x 1 root root   4577 Apr  9  2022 znew
-I: user script /srv/workspace/pbuilder/713/tmp/hooks/D02_print_environment finished
+  -rwxr-xr-x 1 root root 838488 Apr 24 11:24 bash
+  -rwxr-xr-x 3 root root  67144 Sep 19  2022 bunzip2
+  -rwxr-xr-x 3 root root  67144 Sep 19  2022 bzcat
+  lrwxrwxrwx 1 root root      6 Sep 19  2022 bzcmp -> bzdiff
+  -rwxr-xr-x 1 root root   2225 Sep 19  2022 bzdiff
+  lrwxrwxrwx 1 root root      6 Sep 19  2022 bzegrep -> bzgrep
+  -rwxr-xr-x 1 root root   4893 Nov 28  2021 bzexe
+  lrwxrwxrwx 1 root root      6 Sep 19  2022 bzfgrep -> bzgrep
+  -rwxr-xr-x 1 root root   3775 Sep 19  2022 bzgrep
+  -rwxr-xr-x 3 root root  67144 Sep 19  2022 bzip2
+  -rwxr-xr-x 1 root root  67112 Sep 19  2022 bzip2recover
+  lrwxrwxrwx 1 root root      6 Sep 19  2022 bzless -> bzmore
+  -rwxr-xr-x 1 root root   1297 Sep 19  2022 bzmore
+  -rwxr-xr-x 1 root root  67632 Sep 21  2022 cat
+  -rwxr-xr-x 1 root root  67676 Sep 21  2022 chgrp
+  -rwxr-xr-x 1 root root  67644 Sep 21  2022 chmod
+  -rwxr-xr-x 1 root root  67684 Sep 21  2022 chown
+  -rwxr-xr-x 1 root root 133532 Sep 21  2022 cp
+  -rwxr-xr-x 1 root root 132868 Jan  6 03:20 dash
+  -rwxr-xr-x 1 root root 133220 Sep 21  2022 date
+  -rwxr-xr-x 1 root root  67732 Sep 21  2022 dd
+  -rwxr-xr-x 1 root root  68104 Sep 21  2022 df
+  -rwxr-xr-x 1 root root 133632 Sep 21  2022 dir
+  -rwxr-xr-x 1 root root  59128 Mar 23 23:02 dmesg
+  lrwxrwxrwx 1 root root      8 Dec 20 03:33 dnsdomainname -> hostname
+  lrwxrwxrwx 1 root root      8 Dec 20 03:33 domainname -> hostname
+  -rwxr-xr-x 1 root root  67560 Sep 21  2022 echo
+  -rwxr-xr-x 1 root root     41 Jan 25 04:43 egrep
+  -rwxr-xr-x 1 root root  67548 Sep 21  2022 false
+  -rwxr-xr-x 1 root root     41 Jan 25 04:43 fgrep
+  -rwxr-xr-x 1 root root  55748 Mar 23 23:02 findmnt
+  -rwsr-xr-x 1 root root  26208 Mar 23 22:15 fusermount
+  -rwxr-xr-x 1 root root 128608 Jan 25 04:43 grep
+  -rwxr-xr-x 2 root root   2346 Apr 10  2022 gunzip
+  -rwxr-xr-x 1 root root   6447 Apr 10  2022 gzexe
+  -rwxr-xr-x 1 root root  64220 Apr 10  2022 gzip
+  -rwxr-xr-x 1 root root  67032 Dec 20 03:33 hostname
+  -rwxr-xr-x 1 root root  67720 Sep 21  2022 ln
+  -rwxr-xr-x 1 root root  35132 Mar 23 23:51 login
+  -rwxr-xr-x 1 root root 133632 Sep 21  2022 ls
+  -rwxr-xr-x 1 root root 136808 Mar 23 23:02 lsblk
+  -rwxr-xr-x 1 root root  67800 Sep 21  2022 mkdir
+  -rwxr-xr-x 1 root root  67764 Sep 21  2022 mknod
+  -rwxr-xr-x 1 root root  67596 Sep 21  2022 mktemp
+  -rwxr-xr-x 1 root root  38504 Mar 23 23:02 more
+  -rwsr-xr-x 1 root root  38496 Mar 23 23:02 mount
+  -rwxr-xr-x 1 root root   9824 Mar 23 23:02 mountpoint
+  -rwxr-xr-x 1 root root 133532 Sep 21  2022 mv
+  lrwxrwxrwx 1 root root      8 Dec 20 03:33 nisdomainname -> hostname
+  lrwxrwxrwx 1 root root     14 Apr  3 20:25 pidof -> /sbin/killall5
+  -rwxr-xr-x 1 root root  67608 Sep 21  2022 pwd
+  lrwxrwxrwx 1 root root      4 Apr 24 11:24 rbash -> bash
+  -rwxr-xr-x 1 root root  67600 Sep 21  2022 readlink
+  -rwxr-xr-x 1 root root  67672 Sep 21  2022 rm
+  -rwxr-xr-x 1 root root  67600 Sep 21  2022 rmdir
+  -rwxr-xr-x 1 root root  67400 Nov  3 06:31 run-parts
+  -rwxr-xr-x 1 root root 133372 Jan  6 09:55 sed
+  lrwxrwxrwx 1 root root      9 Apr 30 20:43 sh -> /bin/bash
+  -rwxr-xr-x 1 root root  67584 Sep 21  2022 sleep
+  -rwxr-xr-x 1 root root  67644 Sep 21  2022 stty
+  -rwsr-xr-x 1 root root  50800 Mar 23 23:02 su
+  -rwxr-xr-x 1 root root  67584 Sep 21  2022 sync
+  -rwxr-xr-x 1 root root 336764 Apr  7 04:25 tar
+  -rwxr-xr-x 1 root root  67144 Nov  3 06:31 tempfile
+  -rwxr-xr-x 1 root root 133224 Sep 21  2022 touch
+  -rwxr-xr-x 1 root root  67548 Sep 21  2022 true
+  -rwxr-xr-x 1 root root   9768 Mar 23 22:15 ulockmgr_server
+  -rwsr-xr-x 1 root root  22108 Mar 23 23:02 umount
+  -rwxr-xr-x 1 root root  67572 Sep 21  2022 uname
+  -rwxr-xr-x 2 root root   2346 Apr 10  2022 uncompress
+  -rwxr-xr-x 1 root root 133632 Sep 21  2022 vdir
+  -rwxr-xr-x 1 root root  42608 Mar 23 23:02 wdctl
+  lrwxrwxrwx 1 root root      8 Dec 20 03:33 ypdomainname -> hostname
+  -rwxr-xr-x 1 root root   1984 Apr 10  2022 zcat
+  -rwxr-xr-x 1 root root   1678 Apr 10  2022 zcmp
+  -rwxr-xr-x 1 root root   6460 Apr 10  2022 zdiff
+  -rwxr-xr-x 1 root root     29 Apr 10  2022 zegrep
+  -rwxr-xr-x 1 root root     29 Apr 10  2022 zfgrep
+  -rwxr-xr-x 1 root root   2081 Apr 10  2022 zforce
+  -rwxr-xr-x 1 root root   8103 Apr 10  2022 zgrep
+  -rwxr-xr-x 1 root root   2206 Apr 10  2022 zless
+  -rwxr-xr-x 1 root root   1842 Apr 10  2022 zmore
+  -rwxr-xr-x 1 root root   4577 Apr 10  2022 znew
+I: user script /srv/workspace/pbuilder/26910/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -237,7 +269,7 @@
 Get: 29 http://deb.debian.org/debian bookworm/main armhf po-debconf all 1.0.21+nmu1 [248 kB]
 Get: 30 http://deb.debian.org/debian bookworm/main armhf debhelper all 13.11.4 [942 kB]
 Get: 31 http://deb.debian.org/debian bookworm/main armhf openssl armhf 3.0.8-1 [1373 kB]
-Fetched 19.4 MB in 2s (10.7 MB/s)
+Fetched 19.4 MB in 2s (11.3 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 ... 19329 files and directories currently installed.)
@@ -375,8 +407,19 @@
 Writing extended state information...
 Building tag database...
  -> Finished parsing the build-deps
+Reading package lists...
+Building dependency tree...
+Reading state information...
+usrmerge is already the newest version (35).
+0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 I: Building the package
-I: Running cd /build/mbuffer-20230301+ds1/ && 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  > ../mbuffer_20230301+ds1-1_source.changes
+I: user script /srv/workspace/pbuilder/26910/tmp/hooks/A99_set_merged_usr starting
+Re-configuring usrmerge...
+removed '/etc/unsupported-skip-usrmerge-conversion'
+The system has been successfully converted.
+I: user script /srv/workspace/pbuilder/26910/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/mbuffer-20230301+ds1/ && 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  > ../mbuffer_20230301+ds1-1_source.changes
 dpkg-buildpackage: info: source package mbuffer
 dpkg-buildpackage: info: source version 20230301+ds1-1
 dpkg-buildpackage: info: source distribution unstable
@@ -451,13 +494,13 @@
 checking for inline... inline
 checking whether gcc provides -Wunused-result... yes
 checking for a BSD-compatible install... /usr/bin/install -c
-checking for bash... /bin/bash
-checking for rm... /bin/rm
-checking for cp... /bin/cp
+checking for bash... /usr/bin/bash
+checking for rm... /usr/bin/rm
+checking for cp... /usr/bin/cp
 checking for mt... ./configure: line 4428: WARNING:: command not found
 no
 checking for gtar... no
-checking for tar... /bin/tar
+checking for tar... /usr/bin/tar
 checking for awk... /usr/bin/awk
 checking for special C compiler options needed for large files... no
 checking for _FILE_OFFSET_BITS value needed for large files... 64
@@ -493,7 +536,7 @@
 config.status: creating Makefile
 config.status: creating config.h
    dh_auto_build
-	make -j3
+	make -j4
 make[1]: Entering directory '/build/mbuffer-20230301+ds1'
 [ -d build ] || mkdir build
 touch build/created.stamp
@@ -522,16 +565,17 @@
 gcc -g -O2 -ffile-prefix-map=/build/mbuffer-20230301+ds1=. -fstack-protector-strong -Wformat -Werror=format-security -Wno-unused-result -DHAVE_CONFIG_H -DPREFIX=\"/usr\" -I. -I. -Wl,-z,relro -Wl,-z,now -Wl,-z,defs build/log.o build/network.o build/mbuffer.o build/hashing.o build/input.o build/common.o build/settings.o build/globals.o -lm -lpthread  -o mbuffer
 make[1]: Leaving directory '/build/mbuffer-20230301+ds1'
    dh_auto_test
-	make -j3 check "TESTSUITEFLAGS=-j3 --verbose" VERBOSE=1
+	make -j4 check "TESTSUITEFLAGS=-j4 --verbose" VERBOSE=1
 make[1]: Entering directory '/build/mbuffer-20230301+ds1'
 bash mkversion.sh
-/bin/tar cf test.tar --ignore-failed-read /bin /usr/bin
-/bin/tar: Removing leading `/' from member names
-/bin/tar: Removing leading `/' from hard link targets
+/usr/bin/tar cf test.tar --ignore-failed-read /bin /usr/bin
+/usr/bin/tar: Removing leading `/' from member names
+/usr/bin/tar: Removing leading `/' from hard link targets
 version.h is up-to-date
 openssl md5 > mbuffer.md5 < mbuffer 
 LD_PRELOAD=./idev.so BSIZE=317 IDEV=mbuffer ./mbuffer -s256 -i mbuffer -f -o mbuffer2
-idev.so: d_open = 0xb6e27de5
+./mbuffer -P90 --md5 -i INSTALL -o /dev/null
+idev.so: d_open = 0xf7cf4de5
 idev.so: open(/proc/meminfo,0x0,...) = 3 (IDEV='mbuffer')
 idev.so: open(/etc/mbuffer.rc,0x0,...) = -1 (IDEV='mbuffer')
 idev.so: open(/usr/etc/mbuffer.rc,0x0,...) = -1 (IDEV='mbuffer')
@@ -542,26 +586,25 @@
 idev.so: open(/dev/tty,0x2,...) = -1 (IDEV='mbuffer')
 mbuffer: warning: No controlling terminal and no autoloader command specified.
 mbuffer: warning: Block size is not a multiple of native input size (317B).
-summary:  236 kiByte in  0.1sec - average of 3194 kiB/s
-./mbuffer -P90 --md5 -i INSTALL -o /dev/null
 mbuffer: warning: No controlling terminal and no autoloader command specified.
 MD5 hash: 8bb45d9574a827d338e06f010f00c8c1
 summary:  0.0 kiByte in  0.0sec - average of  0.0 kiB/s
+summary:  236 kiByte in  0.1sec - average of 3731 kiB/s
 openssl md5 < test.tar > test.md5
 ./mbuffer -v 5 -i /etc/hostname
-mbuffer: Physical memory (in pages) : 969736
-mbuffer: available memory: 4294745370 pages
-mbuffer: available memory: 18014398508594280kB / -221926 pages
-mbuffer: virtual memory: 3878944kB / 969736 pages
+mbuffer: Physical memory (in pages) : 875584
+mbuffer: available memory: 4294627265 pages
+mbuffer: available memory: 18014398508121860kB / -340031 pages
+mbuffer: virtual memory: 3502336kB / 875584 pages
 mbuffer: Blocksize set to physical page size of 4096 bytes
-mbuffer: default Numblocks = 151, default Blocksize = 524288
+mbuffer: default Numblocks = 136, default Blocksize = 524288
 mbuffer: no config file /etc/mbuffer.rc
 mbuffer: no config file /usr/etc/mbuffer.rc
 mbuffer: no config file /build/mbuffer-20230301+ds1/debian/.debhelper/generated/_source/home/.mbuffer.rc
-mbuffer: default buffer set to 151 blocks of 512kiB
+mbuffer: default buffer set to 136 blocks of 512kiB
 mbuffer: Infile = /etc/hostname
-mbuffer: 151 blocks with 512kiB
-mbuffer: allocating 77312kiB as buffer
+mbuffer: 136 blocks with 512kiB
+mbuffer: allocating 68MiB as buffer
 mbuffer: creating semaphores...
 mbuffer: opening input /etc/hostname
 mbuffer: enabled O_DIRECT on /etc/hostname
@@ -577,11 +620,11 @@
 mbuffer: 0 senders, 0 hashers
 mbuffer: outputThread: starting output on <stdout>...
 mbuffer: timeout init: 0.500000 => 0 : 500000
-mbuffer: inputThread: starting with threadid 0xb1adc420...
-mbuffer: inputThread: last block has 19017479531528192 bytes
+mbuffer: inputThread: starting with threadid 0xf3129420...
+mbuffer: inputThread: last block has 40022549668560896 bytes
 mbuffer: inputThread: exiting...
-mbuffer: outputThread: last block has 7 bytes
-cbxi4a
+mbuffer: outputThread: last block has 6 bytes
+jtx1b
 mbuffer: outputThread: syncing <stdout>...
 mbuffer: syncing unsupported on <stdout>: omitted.
 mbuffer: outputThread: finished - exiting...
@@ -601,22 +644,6 @@
 	cp test.tar test2.tar; \
 	cp test.md5 test2.md5; \
 fi
-SKIPPING the IPv4-only test!
-mbuffer: warning: No controlling terminal and no autoloader command specified.
-
in @ 17.7 MiB/s, out @ 8686 kiB/s, 6144 kiB total, buffer   8% full,  11% done
in @ 17.0 MiB/s, out @ 32.6 MiB/s, 2 x 11.5 MiB total, buffer   1% full,  21% done
in @ 18.9 MiB/s, out @  9.9 MiB/s, 11.0 MiB total, buffer  14% full,  20% done
in @ 19.8 MiB/s, out @ 37.6 MiB/s, 2 x 21.0 MiB total, buffer   1% full,  39% done
in @ 20.9 MiB/s, out @ 26.8 MiB/s, 24.5 MiB total, buffer  10% full,  45% done
in @ 20.6 MiB/s, out @ 43.2 MiB/s, 2 x 32.0 MiB total, buffer   0% full,  59% done
in @ 17.8 MiB/s, out @ 22.8 MiB/s, 36.0 MiB total, buffer   7% full,  67% done
in @ 20.9 MiB/s, out @ 35.9 MiB/s, 2 x 41.0 MiB total, buffer   2% full,  76% donesync
-
in @ 21.8 MiB/s, out @ 15.9 MiB/s, 44.0 MiB total, buffer  11% full,  82% done
-MD5 hash: 61f435b93295daf6fef5940c21041da2
-summary: 2x 54.0 MiByte in  2.9sec - average of 37.0 MiB/s
-
-summary: 54.0 MiByte in  2.9sec - average of 18.3 MiB/s
-openssl md5 < test1.tar > test1.md5
-diff test2.md5 test.md5
-rm test2.md5
-openssl md5 < test2.tar > test2.md5 
-rm -f test2.tar
-sync
-diff test2.md5 test.md5
-touch test2
 if ./have-af inet6; then \
 	./mbuffer --pid -q -6 -I :7002 | openssl md5 > test3.md5 & \
 		sleep 1; \
@@ -628,72 +655,44 @@
 	cp test.tar test3.tar; \
 	cp test.md5 test3.md5; \
 fi
+SKIPPING the IPv4-only test!
 SKIPPING the IPv6-only test!
-rm -f test1.tar
+mbuffer: warning: No controlling terminal and no autoloader command specified.
 sync
-diff test1.md5 test.md5
-touch test1
+sync
+
in @ 9493 kiB/s, out @ 9493 kiB/s, 6656 kiB total, buffer   0% full,  12% done
in @ 9457 kiB/s, out @ 18.5 MiB/s, 2 x 6656 kiB total, buffer   0% full,  12% done
in @ 12.9 MiB/s, out @ 12.9 MiB/s, 13.0 MiB total, buffer   0% full,  24% done
in @ 12.9 MiB/s, out @ 23.9 MiB/s, 2 x 12.5 MiB total, buffer   0% full,  23% done
in @ 6113 kiB/s, out @ 6113 kiB/s, 16.0 MiB total, buffer   0% full,  30% done
in @ 6112 kiB/s, out @ 13.9 MiB/s, 2 x 16.0 MiB total, buffer   0% full,  30% done
in @ 9167 kiB/s, out @ 9167 kiB/s, 20.5 MiB total, buffer   0% full,  38% done
in @ 9166 kiB/s, out @ 15.9 MiB/s, 2 x 20.0 MiB total, buffer   0% full,  37% donediff test2.md5 test.md5
+diff test3.md5 test.md5
+rm test2.md5
+rm test3.md5
+openssl md5 < test2.tar > test2.md5 
+openssl md5 < test3.tar > test3.md5 
+
in @ 18.9 MiB/s, out @ 39.9 MiB/s, 2 x 30.0 MiB total, buffer   0% full,  55% done
in @ 18.9 MiB/s, out @ 18.9 MiB/s, 30.0 MiB total, buffer   0% full,  55% donerm -f test2.tar
+rm -f test3.tar
+sync
+sync
+diff test2.md5 test.md5
+diff test3.md5 test.md5
+touch test2
+touch test3
 rm -f output-test4.tar.*
+rm -f output-test5.tar.*
 cat mbuffer | LD_PRELOAD=./tapetest.so ./mbuffer -s10k -f -o output-test4 -H -A "echo '[test4] Replacing tape'"
+cat mbuffer | LD_PRELOAD=./tapetest.so ./mbuffer -s10k -f -o output-test5 -H -A "echo '[test5] Replacing tape'" --tapeaware
+
in @ 26.9 MiB/s, out @ 45.9 MiB/s, 2 x 41.5 MiB total, buffer   2% full,  77% done
in @ 27.0 MiB/s, out @ 27.0 MiB/s, 43.5 MiB total, buffer   0% full,  80% done
 [test4] Replacing tape
-[test4] Replacing tape
-[test4] Replacing tape
-[test4] Replacing tape
-MD5 hash: 874bfbd51d1b95f6ccef41fabb0025ff
-summary:  236 kiByte in  0.1sec - average of 2524 kiB/s
 
+[test5] Replacing tape
 
+[test4] Replacing tape
 
+[test5] Replacing tape
 
-[INTERCEPT] open: output-test4, intercepted and writing as output-test4.000001
+[test4] Replacing tape
+
+[test4] Replacing tape
 
-[INTERCEPT] write(block 0): OK
-[INTERCEPT] write(block 1): OK
-[INTERCEPT] write(block 2): OK
-[INTERCEPT] write(block 3): OK
-[INTERCEPT] write(block 4): OK
-[INTERCEPT] write(block 5): ENOSPC (early)
-[INTERCEPT] open: output-test4, intercepted and writing as output-test4.000002
-[INTERCEPT] write(block 0): OK
-[INTERCEPT] write(block 1): OK
-[INTERCEPT] write(block 2): OK
-[INTERCEPT] write(block 3): OK
-[INTERCEPT] write(block 4): OK
-[INTERCEPT] write(block 5): ENOSPC (early)
-[INTERCEPT] open: output-test4, intercepted and writing as output-test4.000003
-[INTERCEPT] write(block 0): OK
-[INTERCEPT] write(block 1): OK
-[INTERCEPT] write(block 2): OK
-[INTERCEPT] write(block 3): OK
-[INTERCEPT] write(block 4): OK
-[INTERCEPT] write(block 5): ENOSPC (early)
-[INTERCEPT] open: output-test4, intercepted and writing as output-test4.000004
-[INTERCEPT] write(block 0): OK
-[INTERCEPT] write(block 1): OK
-[INTERCEPT] write(block 2): OK
-[INTERCEPT] write(block 3): OK
-[INTERCEPT] write(block 4): OK
-[INTERCEPT] write(block 5): ENOSPC (early)
-[INTERCEPT] open: output-test4, intercepted and writing as output-test4.000005
-[INTERCEPT] write(block 0): OK
-[INTERCEPT] write(block 1): OK
-[INTERCEPT] write(block 2): OK
-[INTERCEPT] write(block 3): OK
-[INTERCEPT] write(block 4): OK
-cat output-test4* | openssl md5 > test4.md5
-rm -f output-test4
-sync
-sync
-diff test4.md5 mbuffer.md5 > test4
-diff test3.md5 test.md5
-rm test3.md5
-rm -f output-test5.tar.*
-openssl md5 < test3.tar > test3.md5 
-cat mbuffer | LD_PRELOAD=./tapetest.so ./mbuffer -s10k -f -o output-test5 -H -A "echo '[test5] Replacing tape'" --tapeaware
-[test5] Replacing tape
-[test5] Replacing tape
 MD5 hash: 874bfbd51d1b95f6ccef41fabb0025ff
-summary:  236 kiByte in  0.1sec - average of 2026 kiB/s
+summary:  236 kiByte in  0.3sec - average of  893 kiB/s
 
 
 
@@ -742,21 +741,73 @@
 [INTERCEPT] write(block 3): OK
 [INTERCEPT] write(block 4): OK
 cat output-test5* | openssl md5 > test5.md5
+
+MD5 hash: 874bfbd51d1b95f6ccef41fabb0025ff
+summary:  236 kiByte in  0.4sec - average of  530 kiB/s
+
+
+
+
+[INTERCEPT] open: output-test4, intercepted and writing as output-test4.000001
+
+[INTERCEPT] write(block 0): OK
+[INTERCEPT] write(block 1): OK
+[INTERCEPT] write(block 2): OK
+[INTERCEPT] write(block 3): OK
+[INTERCEPT] write(block 4): OK
+[INTERCEPT] write(block 5): ENOSPC (early)
+[INTERCEPT] open: output-test4, intercepted and writing as output-test4.000002
+[INTERCEPT] write(block 0): OK
+[INTERCEPT] write(block 1): OK
+[INTERCEPT] write(block 2): OK
+[INTERCEPT] write(block 3): OK
+[INTERCEPT] write(block 4): OK
+[INTERCEPT] write(block 5): ENOSPC (early)
+[INTERCEPT] open: output-test4, intercepted and writing as output-test4.000003
+[INTERCEPT] write(block 0): OK
+[INTERCEPT] write(block 1): OK
+[INTERCEPT] write(block 2): OK
+[INTERCEPT] write(block 3): OK
+[INTERCEPT] write(block 4): OK
+[INTERCEPT] write(block 5): ENOSPC (early)
+[INTERCEPT] open: output-test4, intercepted and writing as output-test4.000004
+[INTERCEPT] write(block 0): OK
+[INTERCEPT] write(block 1): OK
+[INTERCEPT] write(block 2): OK
+[INTERCEPT] write(block 3): OK
+[INTERCEPT] write(block 4): OK
+[INTERCEPT] write(block 5): ENOSPC (early)
+[INTERCEPT] open: output-test4, intercepted and writing as output-test4.000005
+[INTERCEPT] write(block 0): OK
+[INTERCEPT] write(block 1): OK
+[INTERCEPT] write(block 2): OK
+[INTERCEPT] write(block 3): OK
+[INTERCEPT] write(block 4): OK
+cat output-test4* | openssl md5 > test4.md5
 rm -f output-test5
 sync
-diff test5.md5 mbuffer.md5 > test5
-rm -f test3.tar
+
in @ 16.9 MiB/s, out @ 37.8 MiB/s, 2 x 51.0 MiB total, buffer   1% full,  94% done
in @ 16.9 MiB/s, out @ 16.9 MiB/s, 52.0 MiB total, buffer   0% full,  96% donerm -f output-test4
 sync
-diff test3.md5 test.md5
-touch test3
+diff test5.md5 mbuffer.md5 > test5
+
+summary: 54.1 MiByte in  3.9sec - average of 13.7 MiB/s
+
+MD5 hash: e43f6a48dec8fde0e2e67d0698ba2f4f
+summary: 2x 54.1 MiByte in  4.1sec - average of 26.7 MiB/s
+diff test4.md5 mbuffer.md5 > test4
+openssl md5 < test1.tar > test1.md5
 sync
 diff test0.md5 test.md5
 touch test0
+rm -f test1.tar
+sync
+diff test1.md5 test.md5
+touch test1
 make[1]: Leaving directory '/build/mbuffer-20230301+ds1'
    create-stamp debian/debhelper-build-stamp
    dh_prep
    dh_auto_install --destdir=debian/mbuffer/
-	make -j3 install DESTDIR=/build/mbuffer-20230301\+ds1/debian/mbuffer AM_UPDATE_INFO_DIR=no
+	make -j4 install DESTDIR=/build/mbuffer-20230301\+ds1/debian/mbuffer AM_UPDATE_INFO_DIR=no
 make[1]: Entering directory '/build/mbuffer-20230301+ds1'
 bash mkversion.sh
 /usr/bin/install -c -d -m 755 /build/mbuffer-20230301+ds1/debian/mbuffer/etc
@@ -802,12 +853,14 @@
 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/26910/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/26910/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/713 and its subdirectories
-I: Current time: Sat Apr 29 18:43:24 -12 2023
-I: pbuilder-time-stamp: 1682837004
+I: removing directory /srv/workspace/pbuilder/26910 and its subdirectories
+I: Current time: Sun Apr 30 20:44:58 +14 2023
+I: pbuilder-time-stamp: 1682837098