Diff of the two buildlogs: -- --- b1/build.log 2025-09-14 22:36:33.682749535 +0000 +++ b2/build.log 2025-09-14 22:38:05.390862486 +0000 @@ -1,6 +1,6 @@ I: pbuilder: network access will be disabled during build -I: Current time: Sat Oct 17 16:58:04 -12 2026 -I: pbuilder-time-stamp: 1792299484 +I: Current time: Mon Sep 15 12:36:35 +14 2025 +I: pbuilder-time-stamp: 1757889395 I: Building the build Environment I: extracting base tarball [/var/cache/pbuilder/forky-reproducible-base.tgz] I: copying local configuration @@ -22,53 +22,85 @@ dpkg-source: info: unpacking ocaml-multicore-bench_0.1.7-1.debian.tar.xz I: Not using root during the build. I: Installing the build-deps -I: user script /srv/workspace/pbuilder/312510/tmp/hooks/D02_print_environment starting +I: user script /srv/workspace/pbuilder/13345/tmp/hooks/D01_modify_environment starting +debug: Running on codethink04-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 Sep 14 22:36 /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/13345/tmp/hooks/D01_modify_environment finished +I: user script /srv/workspace/pbuilder/13345/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]="3" [2]="3" [3]="1" [4]="release" [5]="aarch64-unknown-linux-gnu") + BASH_VERSION='5.3.3(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='forky' - HOME='/root' - HOST_ARCH='arm64' + DIRSTACK=() + DISTRIBUTION=forky + EUID=0 + FUNCNAME=([0]="Echo" [1]="main") + GROUPS=() + HOME=/root + HOSTNAME=i-capture-the-hostname + HOSTTYPE=aarch64 + HOST_ARCH=arm64 IFS=' ' - INVOCATION_ID='9d4d89a3e76d408185fb3a78b6130c7f' - 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='312510' - PS1='# ' - PS2='> ' + INVOCATION_ID=932c6dfcb93b4dab9c0fc3e9fd8f8167 + 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=13345 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.0PVLRVSS/pbuilderrc_GSca --distribution forky --hookdir /etc/pbuilder/first-build-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/forky-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.0PVLRVSS/b1 --logfile b1/build.log ocaml-multicore-bench_0.1.7-1.dsc' - SUDO_GID='109' - SUDO_HOME='/var/lib/jenkins' - 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.0PVLRVSS/pbuilderrc_DY07 --distribution forky --hookdir /etc/pbuilder/rebuild-hooks --debbuildopts -b --basetgz /var/cache/pbuilder/forky-reproducible-base.tgz --buildresult /srv/reproducible-results/rbuild-debian/r-b-build.0PVLRVSS/b2 --logfile b2/build.log ocaml-multicore-bench_0.1.7-1.dsc' + SUDO_GID=109 + SUDO_HOME=/var/lib/jenkins + 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 codethink03-arm64 6.12.43+deb13-cloud-arm64 #1 SMP Debian 6.12.43-1 (2025-08-27) aarch64 GNU/Linux + Linux i-capture-the-hostname 6.12.43+deb13-cloud-arm64 #1 SMP Debian 6.12.43-1 (2025-08-27) aarch64 GNU/Linux I: ls -l /bin - lrwxrwxrwx 1 root root 7 Aug 10 2025 /bin -> usr/bin -I: user script /srv/workspace/pbuilder/312510/tmp/hooks/D02_print_environment finished + lrwxrwxrwx 1 root root 7 Aug 10 12:30 /bin -> usr/bin +I: user script /srv/workspace/pbuilder/13345/tmp/hooks/D02_print_environment finished -> Attempting to satisfy build-dependencies -> Creating pbuilder-satisfydepends-dummy package Package: pbuilder-satisfydepends-dummy @@ -260,7 +292,7 @@ Get: 136 http://deb.debian.org/debian forky/main arm64 libmulticore-magic-ocaml arm64 2.3.1-2+b2 [4524 B] Get: 137 http://deb.debian.org/debian forky/main arm64 libmulticore-magic-ocaml-dev arm64 2.3.1-2+b2 [134 kB] Get: 138 http://deb.debian.org/debian forky/main arm64 ocaml-dune arm64 3.20.2-3 [5696 kB] -Fetched 219 MB in 1s (212 MB/s) +Fetched 219 MB in 1s (183 MB/s) Preconfiguring packages ... Selecting previously unselected package libexpat1:arm64. (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 ... 20020 files and directories currently installed.) @@ -827,7 +859,11 @@ Building tag database... -> Finished parsing the build-deps I: Building the package -I: Running cd /build/reproducible-path/ocaml-multicore-bench-0.1.7/ && 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 > ../ocaml-multicore-bench_0.1.7-1_source.changes +I: user script /srv/workspace/pbuilder/13345/tmp/hooks/A99_set_merged_usr starting +Not re-configuring usrmerge for forky +I: user script /srv/workspace/pbuilder/13345/tmp/hooks/A99_set_merged_usr finished +hostname: Name or service not known +I: Running cd /build/reproducible-path/ocaml-multicore-bench-0.1.7/ && 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 > ../ocaml-multicore-bench_0.1.7-1_source.changes dpkg-buildpackage: info: source package ocaml-multicore-bench dpkg-buildpackage: info: source version 0.1.7-1 dpkg-buildpackage: info: source distribution unstable @@ -854,253 +890,253 @@ (cd _build/default/bench && ./main.exe -brief) Atomic: ops over time/cas int: - 49.87 M/s + 50.45 M/s ops over time/get: - 850.89 M/s + 506.25 M/s ops over time/incr: - 53.70 M/s + 53.30 M/s ops over time/push & pop: - 19.45 M/s + 15.65 M/s ops over time/swap: - 17.08 M/s + 10.78 M/s ops over time/xchg int: - 34.72 M/s + 48.20 M/s time per op/cas int: - 20.05 ns + 19.82 ns time per op/get: - 1.18 ns + 1.98 ns time per op/incr: - 18.62 ns + 18.76 ns time per op/push & pop: - 51.41 ns + 63.90 ns time per op/swap: - 58.54 ns + 92.78 ns time per op/xchg int: - 28.80 ns + 20.75 ns Atomic incr: ops over time/CAS, 1 domains: - 46.31 M/s + 55.95 M/s ops over time/CAS, 2 domains: - 19.83 M/s + 67.36 M/s ops over time/CAS, 4 domains: - 19.82 M/s + 20.12 M/s ops over time/CAS, 8 domains: - 14.83 M/s + 14.09 M/s ops over time/CAS with backoff, 1 domains: - 46.42 M/s + 46.53 M/s ops over time/CAS with backoff, 2 domains: - 68.45 M/s + 69.56 M/s ops over time/CAS with backoff, 4 domains: - 48.82 M/s + 31.76 M/s ops over time/CAS with backoff, 8 domains: - 23.78 M/s + 12.91 M/s ops over time/Incr, 1 domains: - 55.71 M/s + 102.01 M/s ops over time/Incr, 2 domains: - 29.83 M/s + 77.59 M/s ops over time/Incr, 4 domains: - 60.59 M/s + 32.16 M/s ops over time/Incr, 8 domains: - 16.06 M/s + 15.81 M/s time per op/CAS, 1 domains: - 21.59 ns + 17.87 ns time per op/CAS, 2 domains: - 100.83 ns + 29.69 ns time per op/CAS, 4 domains: - 201.82 ns + 198.82 ns time per op/CAS, 8 domains: - 539.42 ns + 567.59 ns time per op/CAS with backoff, 1 domains: - 21.54 ns + 21.49 ns time per op/CAS with backoff, 2 domains: - 29.22 ns + 28.75 ns time per op/CAS with backoff, 4 domains: - 81.94 ns + 125.93 ns time per op/CAS with backoff, 8 domains: - 336.44 ns + 619.54 ns time per op/Incr, 1 domains: - 17.95 ns + 9.80 ns time per op/Incr, 2 domains: - 67.04 ns + 25.78 ns time per op/Incr, 4 domains: - 66.02 ns + 124.38 ns time per op/Incr, 8 domains: - 498.25 ns + 506.05 ns Bounded_q: messages over time/1 adder, 1 taker: - 6.07 M/s + 2.06 M/s messages over time/1 adder, 2 takers: - 2.15 M/s + 2.11 M/s messages over time/1 adder, 4 takers: - 2.69 M/s + 1.65 M/s messages over time/2 adders, 1 taker: - 5.96 M/s + 3.51 M/s messages over time/2 adders, 2 takers: - 6.84 M/s + 2.74 M/s messages over time/2 adders, 4 takers: - 3.53 M/s + 1.94 M/s messages over time/4 adders, 1 taker: - 4.98 M/s + 3.05 M/s messages over time/4 adders, 2 takers: - 5.93 M/s + 2.98 M/s messages over time/4 adders, 4 takers: - 2.60 M/s + 2.44 M/s messages over time/one domain: - 4.97 M/s + 8.23 M/s time per message/1 adder, 1 taker: - 329.75 ns + 972.58 ns time per message/1 adder, 2 takers: - 1393.67 ns + 1421.47 ns time per message/1 adder, 4 takers: - 1861.97 ns + 3035.81 ns time per message/2 adders, 1 taker: - 503.21 ns + 854.08 ns time per message/2 adders, 2 takers: - 584.44 ns + 1458.66 ns time per message/2 adders, 4 takers: - 1700.55 ns + 3094.19 ns time per message/4 adders, 1 taker: - 1004.82 ns + 1641.57 ns time per message/4 adders, 2 takers: - 1011.52 ns + 2013.54 ns time per message/4 adders, 4 takers: - 3074.21 ns + 3280.12 ns time per message/one domain: - 201.13 ns + 121.54 ns Hashtbl: operations over time/1 worker, 10% reads: - 8.66 M/s + 7.38 M/s operations over time/1 worker, 50% reads: - 14.14 M/s + 6.53 M/s operations over time/1 worker, 90% reads: - 16.95 M/s + 9.90 M/s operations over time/2 workers, 10% reads: - 6.25 M/s + 6.57 M/s operations over time/2 workers, 50% reads: - 8.63 M/s + 13.23 M/s operations over time/2 workers, 90% reads: - 8.93 M/s + 8.65 M/s operations over time/4 workers, 10% reads: - 7.67 M/s + 6.68 M/s operations over time/4 workers, 50% reads: - 8.92 M/s + 6.07 M/s operations over time/4 workers, 90% reads: - 7.82 M/s + 8.36 M/s operations over time/8 workers, 10% reads: - 3.28 M/s + 4.13 M/s operations over time/8 workers, 50% reads: - 3.05 M/s + 4.05 M/s operations over time/8 workers, 90% reads: - 5.76 M/s + 4.50 M/s operations over time/one domain, 10% reads: - 12.56 M/s + 12.83 M/s operations over time/one domain, 50% reads: - 15.44 M/s + 20.83 M/s operations over time/one domain, 90% reads: - 20.92 M/s + 37.71 M/s time per operation/1 worker, 10% reads: - 115.41 ns + 135.53 ns time per operation/1 worker, 50% reads: - 70.71 ns + 153.05 ns time per operation/1 worker, 90% reads: - 59.00 ns + 101.00 ns time per operation/2 workers, 10% reads: - 319.91 ns + 304.64 ns time per operation/2 workers, 50% reads: - 231.75 ns + 151.19 ns time per operation/2 workers, 90% reads: - 223.84 ns + 231.23 ns time per operation/4 workers, 10% reads: - 521.59 ns + 598.85 ns time per operation/4 workers, 50% reads: - 448.49 ns + 659.02 ns time per operation/4 workers, 90% reads: - 511.39 ns + 478.48 ns time per operation/8 workers, 10% reads: - 2437.45 ns + 1934.85 ns time per operation/8 workers, 50% reads: - 2620.64 ns + 1976.36 ns time per operation/8 workers, 90% reads: - 1388.29 ns + 1776.52 ns time per operation/one domain, 10% reads: - 79.62 ns + 77.92 ns time per operation/one domain, 50% reads: - 64.78 ns + 48.00 ns time per operation/one domain, 90% reads: - 47.79 ns + 26.52 ns Queue: messages over time/one domain: - 8.00 M/s + 24.17 M/s time per message/one domain: - 125.06 ns + 41.38 ns Ref with Mutex: ops over time/cas int: - 14.09 M/s + 14.19 M/s ops over time/get: - 15.29 M/s + 15.44 M/s ops over time/incr: - 14.91 M/s + 15.13 M/s ops over time/push & pop: - 9.56 M/s + 8.03 M/s ops over time/swap: - 7.51 M/s + 10.15 M/s ops over time/xchg int: - 14.07 M/s + 19.22 M/s time per op/cas int: - 70.98 ns + 70.47 ns time per op/get: - 65.38 ns + 64.78 ns time per op/incr: - 67.09 ns + 66.08 ns time per op/push & pop: - 104.65 ns + 124.51 ns time per op/swap: - 133.24 ns + 98.48 ns time per op/xchg int: - 71.09 ns + 52.04 ns Ref with [@poll error]: ops over time/cas int: - 86.74 M/s + 52.12 M/s ops over time/get: - 811.96 M/s + 488.93 M/s ops over time/incr: - 188.32 M/s + 183.71 M/s ops over time/push & pop: - 24.86 M/s + 8.04 M/s ops over time/swap: - 30.73 M/s + 25.47 M/s ops over time/xchg int: - 51.83 M/s + 51.26 M/s time per op/cas int: - 11.53 ns + 19.19 ns time per op/get: - 1.23 ns + 2.05 ns time per op/incr: - 5.31 ns + 5.44 ns time per op/push & pop: - 40.23 ns + 124.35 ns time per op/swap: - 32.54 ns + 39.26 ns time per op/xchg int: - 19.29 ns + 19.51 ns Stack: messages over time/one domain: - 31.93 M/s + 31.16 M/s time per message/one domain: - 31.32 ns + 32.09 ns Unix: blocking reads over time/1 worker: - 1.52 M/s + 2.56 M/s blocking reads over time/2 workers: - 3.23 M/s + 5.67 M/s blocking reads over time/4 workers: - 5.96 M/s + 7.48 M/s time per blocking read/1 worker: - 656.51 ns + 390.11 ns time per blocking read/2 workers: - 619.55 ns + 352.45 ns time per blocking read/4 workers: - 671.03 ns + 534.68 ns create-stamp debian/debhelper-build-stamp dh_testroot -O--buildsystem=ocaml_dune dh_prep -O--buildsystem=ocaml_dune @@ -1128,8 +1164,8 @@ dpkg-gencontrol: warning: Depends field of package libmulticore-bench-ocaml-dev: substitution variable ${shlibs:Depends} used, but is not defined dh_md5sums -O--buildsystem=ocaml_dune dh_builddeb -O--buildsystem=ocaml_dune -dpkg-deb: building package 'libmulticore-bench-ocaml-dev' in '../libmulticore-bench-ocaml-dev_0.1.7-1_arm64.deb'. dpkg-deb: building package 'libmulticore-bench-ocaml-dev-dbgsym' in '../libmulticore-bench-ocaml-dev-dbgsym_0.1.7-1_arm64.deb'. +dpkg-deb: building package 'libmulticore-bench-ocaml-dev' in '../libmulticore-bench-ocaml-dev_0.1.7-1_arm64.deb'. dpkg-genbuildinfo --build=binary -O../ocaml-multicore-bench_0.1.7-1_arm64.buildinfo dpkg-genchanges --build=binary -O../ocaml-multicore-bench_0.1.7-1_arm64.changes dpkg-genchanges: info: binary-only upload (no source code included) @@ -1137,12 +1173,14 @@ 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/13345/tmp/hooks/B01_cleanup starting +I: user script /srv/workspace/pbuilder/13345/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/312510 and its subdirectories -I: Current time: Sat Oct 17 16:59:32 -12 2026 -I: pbuilder-time-stamp: 1792299572 +I: removing directory /srv/workspace/pbuilder/13345 and its subdirectories +I: Current time: Mon Sep 15 12:38:04 +14 2025 +I: pbuilder-time-stamp: 1757889484