Diff of the two buildlogs:

--
--- b1/build.log	2025-03-20 16:43:48.042414690 +0000
+++ b2/build.log	2025-03-20 16:47:55.051248115 +0000
@@ -1,6 +1,6 @@
 I: pbuilder: network access will be disabled during build
-I: Current time: Wed Apr 22 11:04:43 -12 2026
-I: pbuilder-time-stamp: 1776899083
+I: Current time: Fri Mar 21 06:43:50 +14 2025
+I: pbuilder-time-stamp: 1742489030
 I: Building the build Environment
 I: extracting base tarball [/var/cache/pbuilder/unstable-reproducible-base.tgz]
 I: copying local configuration
@@ -25,54 +25,86 @@
 dpkg-source: info: applying concurrent-web-server-connection-refused.patch
 I: Not using root during the build.
 I: Installing the build-deps
-I: user script /srv/workspace/pbuilder/88713/tmp/hooks/D02_print_environment starting
+I: user script /srv/workspace/pbuilder/5619/tmp/hooks/D01_modify_environment starting
+debug: Running on ionos12-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 Mar 20 16:44 /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/5619/tmp/hooks/D01_modify_environment finished
+I: user script /srv/workspace/pbuilder/5619/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]="37" [3]="1" [4]="release" [5]="i686-pc-linux-gnu")
+  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=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='2760477b1dcd4288817ccdec29dc40c6'
-  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='88713'
-  PS1='# '
-  PS2='> '
+  INVOCATION_ID=4bfccfb1a9924e68a798f42d499552b8
+  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=5619
   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.N9TxZpOh/pbuilderrc_dvbF --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.N9TxZpOh/b1 --logfile b1/build.log guile-fibers_1.3.1-5.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.N9TxZpOh/pbuilderrc_KPOF --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.N9TxZpOh/b2 --logfile b2/build.log guile-fibers_1.3.1-5.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 6.1.0-32-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.129-1 (2025-03-06) x86_64 GNU/Linux
+  Linux i-capture-the-hostname 6.1.0-32-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.129-1 (2025-03-06) x86_64 GNU/Linux
 I: ls -l /bin
-  lrwxrwxrwx 1 root root 7 Mar  4  2025 /bin -> usr/bin
-I: user script /srv/workspace/pbuilder/88713/tmp/hooks/D02_print_environment finished
+  lrwxrwxrwx 1 root root 7 Mar  4 11:20 /bin -> usr/bin
+I: user script /srv/workspace/pbuilder/5619/tmp/hooks/D02_print_environment finished
  -> Attempting to satisfy build-dependencies
  -> Creating pbuilder-satisfydepends-dummy package
 Package: pbuilder-satisfydepends-dummy
@@ -173,7 +205,7 @@
 Get: 59 http://deb.debian.org/debian unstable/main i386 tex-common all 6.19 [29.4 kB]
 Get: 60 http://deb.debian.org/debian unstable/main i386 texinfo-lib i386 7.1.1-1+b1 [236 kB]
 Get: 61 http://deb.debian.org/debian unstable/main i386 texinfo all 7.1.1-1 [1753 kB]
-Fetched 35.0 MB in 0s (80.8 MB/s)
+Fetched 35.0 MB in 1s (63.9 MB/s)
 Preconfiguring packages ...
 Selecting previously unselected package libproc2-0:i386.
 (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 ... 19770 files and directories currently installed.)
@@ -448,7 +480,11 @@
 Building tag database...
  -> Finished parsing the build-deps
 I: Building the package
-I: Running cd /build/reproducible-path/guile-fibers-1.3.1/ && 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  > ../guile-fibers_1.3.1-5_source.changes
+I: user script /srv/workspace/pbuilder/5619/tmp/hooks/A99_set_merged_usr starting
+Not re-configuring usrmerge for unstable
+I: user script /srv/workspace/pbuilder/5619/tmp/hooks/A99_set_merged_usr finished
+hostname: Name or service not known
+I: Running cd /build/reproducible-path/guile-fibers-1.3.1/ && 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  > ../guile-fibers_1.3.1-5_source.changes
 dpkg-buildpackage: info: source package guile-fibers
 dpkg-buildpackage: info: source version 1.3.1-5
 dpkg-buildpackage: info: source distribution unstable
@@ -589,27 +625,27 @@
 removed 'fibers.info'
 make[1]: Leaving directory '/build/reproducible-path/guile-fibers-1.3.1'
    dh_auto_build -O--builddirectory=b4deb
-	cd b4deb && make -j22
+	cd b4deb && make -j10
 make[1]: Entering directory '/build/reproducible-path/guile-fibers-1.3.1/b4deb'
 mkdir -p fibers
 mkdir -p /build/reproducible-path/guile-fibers-1.3.1/b4deb/override/fibers
 mkdir -p /build/reproducible-path/guile-fibers-1.3.1/b4deb/override/fibers
 sed -e "s|@extlibdir\@|/usr/lib/i386-linux-gnu/guile/3.0/extensions|" \
     ../fibers/config.scm.in > fibers/config.scm
-cp -f /build/reproducible-path/guile-fibers-1.3.1/b4deb/../fibers/epoll.scm /build/reproducible-path/guile-fibers-1.3.1/b4deb/override/fibers/events-impl.scm
 cp -f /build/reproducible-path/guile-fibers-1.3.1/b4deb/../fibers/posix-clocks-generic.scm /build/reproducible-path/guile-fibers-1.3.1/b4deb/override/fibers/posix-clocks.scm
+cp -f /build/reproducible-path/guile-fibers-1.3.1/b4deb/../fibers/epoll.scm /build/reproducible-path/guile-fibers-1.3.1/b4deb/override/fibers/events-impl.scm
 make  all-am
 make[2]: Entering directory '/build/reproducible-path/guile-fibers-1.3.1/b4deb'
 restore=: && backupdir=".am$$" && \
 am__cwd=`pwd` && CDPATH="${ZSH_VERSION+.}:" && cd .. && \
 rm -rf $backupdir && mkdir $backupdir && \
-if (/bin/bash '/build/reproducible-path/guile-fibers-1.3.1/build-aux/missing' makeinfo --version) >/dev/null 2>&1; then \
+if (/bin/sh '/build/reproducible-path/guile-fibers-1.3.1/build-aux/missing' makeinfo --version) >/dev/null 2>&1; then \
   for f in ../fibers.info ../fibers.info-[0-9] ../fibers.info-[0-9][0-9] ../fibers.i[0-9] ../fibers.i[0-9][0-9]; do \
     if test -f $f; then mv $f $backupdir; restore=mv; else :; fi; \
   done; \
 else :; fi && \
 cd "$am__cwd"; \
-if /bin/bash '/build/reproducible-path/guile-fibers-1.3.1/build-aux/missing' makeinfo   -I .. \
+if /bin/sh '/build/reproducible-path/guile-fibers-1.3.1/build-aux/missing' makeinfo   -I .. \
  -o ../fibers.info ../fibers.texi; \
 then \
   rc=0; \
@@ -626,9 +662,9 @@
 ./env	\
   /usr/bin/guild-3.0 compile  -L "/build/reproducible-path/guile-fibers-1.3.1/b4deb/.."	\
   -Wunbound-variable -Warity-mismatch -Wformat -o "override/fibers/posix-clocks.go" "override/fibers/posix-clocks.scm"
-/bin/bash ./libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I..   -Wdate-time -D_FORTIFY_SOURCE=2 -I.. -Wall -Werror  -I/usr/include/guile/3.0  -I../extensions -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/guile-fibers-1.3.1=. -fstack-protector-strong -Wformat -Werror=format-security -c -o extensions/fibers_epoll_la-epoll.lo `test -f 'extensions/epoll.c' || echo '../'`extensions/epoll.c
+/bin/sh ./libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I..   -Wdate-time -D_FORTIFY_SOURCE=2 -I.. -Wall -Werror  -I/usr/include/guile/3.0  -I../extensions -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/guile-fibers-1.3.1=. -fstack-protector-strong -Wformat -Werror=format-security -c -o extensions/fibers_epoll_la-epoll.lo `test -f 'extensions/epoll.c' || echo '../'`extensions/epoll.c
 libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -Wdate-time -D_FORTIFY_SOURCE=2 -I.. -Wall -Werror -I/usr/include/guile/3.0 -I../extensions -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/guile-fibers-1.3.1=. -fstack-protector-strong -Wformat -Werror=format-security -c ../extensions/epoll.c  -fPIC -DPIC -o extensions/.libs/fibers_epoll_la-epoll.o
-/bin/bash ./libtool  --tag=CC   --mode=link gcc -I.. -Wall -Werror  -I/usr/include/guile/3.0  -I../extensions -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/guile-fibers-1.3.1=. -fstack-protector-strong -Wformat -Werror=format-security -export-dynamic -module -Wl,-z,relro -Wl,-z,now -o fibers-epoll.la -rpath /usr/lib/i386-linux-gnu/guile/3.0/extensions extensions/fibers_epoll_la-epoll.lo -lguile-3.0 -lgc -lpthread -ldl   
+/bin/sh ./libtool  --tag=CC   --mode=link gcc -I.. -Wall -Werror  -I/usr/include/guile/3.0  -I../extensions -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/guile-fibers-1.3.1=. -fstack-protector-strong -Wformat -Werror=format-security -export-dynamic -module -Wl,-z,relro -Wl,-z,now -o fibers-epoll.la -rpath /usr/lib/i386-linux-gnu/guile/3.0/extensions extensions/fibers_epoll_la-epoll.lo -lguile-3.0 -lgc -lpthread -ldl   
 libtool: link: gcc -shared  -fPIC -DPIC  extensions/.libs/fibers_epoll_la-epoll.o   -lguile-3.0 -lgc -lpthread -ldl  -Werror -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/guile-fibers-1.3.1=. -fstack-protector-strong -Werror=format-security -Wl,-z -Wl,relro -Wl,-z -Wl,now   -Wl,-soname -Wl,fibers-epoll.so.0 -o .libs/fibers-epoll.so.0.0.0
 libtool: link: (cd ".libs" && rm -f "fibers-epoll.so.0" && ln -s "fibers-epoll.so.0.0.0" "fibers-epoll.so.0")
 libtool: link: (cd ".libs" && rm -f "fibers-epoll.so" && ln -s "fibers-epoll.so.0.0.0" "fibers-epoll.so")
@@ -657,59 +693,50 @@
 ./env	\
   /usr/bin/guild-3.0 compile  -L "/build/reproducible-path/guile-fibers-1.3.1/b4deb/.."	\
   -Wunbound-variable -Warity-mismatch -Wformat -o "fibers/interrupts.go" "../fibers/interrupts.scm"
+;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
+;;;       or pass the --no-auto-compile argument to disable.
+;;; compiling /usr/bin/guild-3.0
+;;; compiled /build/reproducible-path/guile-fibers-1.3.1/debian/.debhelper/generated/_source/home/.cache/guile/ccache/3.0-LE-4-4.7/usr/bin/guild-3.0.go
+wrote `override/fibers/posix-clocks.go'
 ./env	\
   /usr/bin/guild-3.0 compile  -L "/build/reproducible-path/guile-fibers-1.3.1/b4deb/.."	\
   -Wunbound-variable -Warity-mismatch -Wformat -o "fibers/io-wakeup.go" "../fibers/io-wakeup.scm"
+wrote `fibers/config.go'
 ./env	\
   /usr/bin/guild-3.0 compile  -L "/build/reproducible-path/guile-fibers-1.3.1/b4deb/.."	\
   -Wunbound-variable -Warity-mismatch -Wformat -o "fibers/nameset.go" "../fibers/nameset.scm"
+wrote `fibers/affinity.go'
 ./env	\
   /usr/bin/guild-3.0 compile  -L "/build/reproducible-path/guile-fibers-1.3.1/b4deb/.."	\
   -Wunbound-variable -Warity-mismatch -Wformat -o "fibers/operations.go" "../fibers/operations.scm"
+wrote `fibers/interrupts.go'
 ./env	\
   /usr/bin/guild-3.0 compile  -L "/build/reproducible-path/guile-fibers-1.3.1/b4deb/.."	\
   -Wunbound-variable -Warity-mismatch -Wformat -o "fibers/psq.go" "../fibers/psq.scm"
+wrote `fibers/counter.go'
 ./env	\
   /usr/bin/guild-3.0 compile  -L "/build/reproducible-path/guile-fibers-1.3.1/b4deb/.."	\
   -Wunbound-variable -Warity-mismatch -Wformat -o "fibers/repl.go" "../fibers/repl.scm"
+wrote `fibers/nameset.go'
 ./env	\
   /usr/bin/guild-3.0 compile  -L "/build/reproducible-path/guile-fibers-1.3.1/b4deb/.."	\
   -Wunbound-variable -Warity-mismatch -Wformat -o "fibers/scheduler.go" "../fibers/scheduler.scm"
+wrote `fibers/deque.go'
 ./env	\
   /usr/bin/guild-3.0 compile  -L "/build/reproducible-path/guile-fibers-1.3.1/b4deb/.."	\
   -Wunbound-variable -Warity-mismatch -Wformat -o "fibers/stack.go" "../fibers/stack.scm"
+wrote `fibers.go'
+wrote `fibers/conditions.go'
 ./env	\
   /usr/bin/guild-3.0 compile  -L "/build/reproducible-path/guile-fibers-1.3.1/b4deb/.."	\
   -Wunbound-variable -Warity-mismatch -Wformat -o "fibers/timers.go" "../fibers/timers.scm"
 ./env	\
   /usr/bin/guild-3.0 compile  -L "/build/reproducible-path/guile-fibers-1.3.1/b4deb/.."	\
   -Wunbound-variable -Warity-mismatch -Wformat -o "fibers/timer-wheel.go" "../fibers/timer-wheel.scm"
+wrote `fibers/io-wakeup.go'
 ./env	\
   /usr/bin/guild-3.0 compile  -L "/build/reproducible-path/guile-fibers-1.3.1/b4deb/.."	\
   -Wunbound-variable -Warity-mismatch -Wformat -o "fibers/web/server.go" "../fibers/web/server.scm"
-./env	\
-  /usr/bin/guild-3.0 compile  -L "/build/reproducible-path/guile-fibers-1.3.1/b4deb/.."	\
-  -Wunbound-variable -Warity-mismatch -Wformat -o "web/server/fibers.go" "../web/server/fibers.scm"
-;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
-;;;       or pass the --no-auto-compile argument to disable.
-;;; compiling /usr/bin/guild-3.0
-;;; compiled /build/reproducible-path/guile-fibers-1.3.1/debian/.debhelper/generated/_source/home/.cache/guile/ccache/3.0-LE-4-4.7/usr/bin/guild-3.0.go
-wrote `override/fibers/posix-clocks.go'
-wrote `fibers/config.go'
-wrote `fibers/affinity.go'
-wrote `fibers/interrupts.go'
-wrote `fibers/counter.go'
-wrote `fibers/stack.go'
-wrote `fibers/nameset.go'
-wrote `fibers/timers.go'
-wrote `fibers/io-wakeup.go'
-wrote `fibers/deque.go'
-wrote `fibers.go'
-wrote `fibers/web/server.go'
-wrote `fibers/conditions.go'
-wrote `fibers/repl.go'
-wrote `web/server/fibers.go'
-wrote `fibers/channels.go'
 ;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
 ;;;       or pass the --no-auto-compile argument to disable.
 ;;; compiling /usr/bin/guild-3.0
@@ -731,14 +758,23 @@
 b4deb/override/fibers/events-impl.scm:192:53: warning: possibly unbound variable `EPOLLERR'
 b4deb/override/fibers/events-impl.scm:202:38: warning: possibly unbound variable `EPOLLONESHOT'
 wrote `override/fibers/events-impl.go'
+./env	\
+  /usr/bin/guild-3.0 compile  -L "/build/reproducible-path/guile-fibers-1.3.1/b4deb/.."	\
+  -Wunbound-variable -Warity-mismatch -Wformat -o "web/server/fibers.go" "../web/server/fibers.scm"
 wrote `fibers/operations.go'
+wrote `fibers/channels.go'
+wrote `fibers/repl.go'
+wrote `fibers/stack.go'
+wrote `fibers/timers.go'
 wrote `fibers/psq.go'
+wrote `fibers/web/server.go'
+wrote `web/server/fibers.go'
 wrote `fibers/scheduler.go'
 wrote `fibers/timer-wheel.go'
 make[2]: Leaving directory '/build/reproducible-path/guile-fibers-1.3.1/b4deb'
 make[1]: Leaving directory '/build/reproducible-path/guile-fibers-1.3.1/b4deb'
    dh_auto_test -O--builddirectory=b4deb
-	cd b4deb && make -j22 check "TESTSUITEFLAGS=-j22 --verbose" VERBOSE=1
+	cd b4deb && make -j10 check "TESTSUITEFLAGS=-j10 --verbose" VERBOSE=1
 make[1]: Entering directory '/build/reproducible-path/guile-fibers-1.3.1/b4deb'
 make  check-am
 make[2]: Entering directory '/build/reproducible-path/guile-fibers-1.3.1/b4deb'
@@ -747,34 +783,34 @@
 assert #f equal to #f: ok
 assert #t terminates: ok
 assert (false-if-exception (begin (run-fibers) #t)) equal to #f: ok
-assert terminates: (run-fibers (lambda () (sleep 1)) #:drain? #t): ok (1.078 s)
-assert terminates: (run-fibers (lambda () (do-times 1 (spawn-fiber (lambda () #t)))) #:drain? #t): ok (0.028 s)
-assert terminates: (run-fibers (lambda () (do-times 10 (spawn-fiber (lambda () #t)))) #:drain? #t): ok (0.043 s)
-assert terminates: (run-fibers (lambda () (do-times 100 (spawn-fiber (lambda () #t)))) #:drain? #t): ok (0.009 s)
-assert terminates: (run-fibers (lambda () (do-times 1000 (spawn-fiber (lambda () #t)))) #:drain? #t): ok (0.03 s)
-assert terminates: (run-fibers (lambda () (do-times 10000 (spawn-fiber (lambda () #t)))) #:drain? #t): ok (0.028 s)
-assert terminates: (run-fibers (lambda () (do-times 100000 (spawn-fiber (lambda () #t)))) #:drain? #t): ok (0.192 s)
-assert terminates: (run-fibers (lambda () (do-times 100000 (spawn-fiber (lambda () #t) #:parallel? #t))) #:drain? #t): ok (0.609 s)
-assert terminates: (run-fibers (lambda () (do-times 100000 (spawn-fiber loop-to-1e4))) #:drain? #t): ok (2.616 s)
-assert terminates: (run-fibers (lambda () (do-times 100000 (spawn-fiber loop-to-1e4 #:parallel? #t))) #:drain? #t): ok (0.507 s)
-assert terminates: (run-fibers (lambda () (do-times 1 (spawn-fiber (lambda () (sleep 1))))) #:drain? #t): ok (1.044 s)
-assert terminates: (run-fibers (lambda () (do-times 10 (spawn-fiber (lambda () (sleep 1))))) #:drain? #t): ok (1.024 s)
-assert terminates: (run-fibers (lambda () (do-times 100 (spawn-fiber (lambda () (sleep 1))))) #:drain? #t): ok (1.032 s)
-assert terminates: (run-fibers (lambda () (do-times 1000 (spawn-fiber (lambda () (sleep 1))))) #:drain? #t): ok (1.063 s)
-assert terminates: (run-fibers (lambda () (do-times 10000 (spawn-fiber (lambda () (sleep 1))))) #:drain? #t): ok (1.04 s)
-assert terminates: (run-fibers (lambda () (do-times 100000 (spawn-fiber (lambda () (sleep 1))))) #:drain? #t): ok (1.312 s)
-assert terminates: (run-fibers (lambda () (do-times 1000000 (spawn-fiber (lambda () (sleep 1))))) #:drain? #t): ok (5.271 s)
-assert terminates: (run-fibers (lambda () (spawn-fiber-tree 7 (lambda () (sleep 1)))) #:drain? #t): ok (1.064 s)
-assert terminates: (run-fibers (lambda () (spawn-fiber-chain 5)) #:drain? #t): ok (0.013 s)
-assert terminates: (run-fibers (lambda () (spawn-fiber-chain 50)) #:drain? #t): ok (0.009 s)
-assert terminates: (run-fibers (lambda () (spawn-fiber-chain 500)) #:drain? #t): ok (0.01 s)
-assert terminates: (run-fibers (lambda () (spawn-fiber-chain 5000)) #:drain? #t): ok (0.023 s)
-assert terminates: (run-fibers (lambda () (spawn-fiber-chain 50000)) #:drain? #t): ok (0.168 s)
-assert terminates: (run-fibers (lambda () (spawn-fiber-chain 500000)) #:drain? #t): ok (1.628 s)
-assert terminates: (run-fibers (lambda () (spawn-fiber-chain 5000000)) #:drain? #t): ok (15.306 s)
-assert terminates: (run-fibers (lambda () (test-run-order 10)) #:parallelism 1 #:drain? #t): ok (0.021 s)
-assert terminates: (run-fibers (lambda () (test-wakeup-order 10)) #:parallelism 1 #:drain? #t): ok (0.0 s)
-assert terminates: (run-fibers (lambda () 1) #:drain? #t): ok (0.028 s)
+assert terminates: (run-fibers (lambda () (sleep 1)) #:drain? #t): ok (1.061 s)
+assert terminates: (run-fibers (lambda () (do-times 1 (spawn-fiber (lambda () #t)))) #:drain? #t): ok (0.014 s)
+assert terminates: (run-fibers (lambda () (do-times 10 (spawn-fiber (lambda () #t)))) #:drain? #t): ok (0.021 s)
+assert terminates: (run-fibers (lambda () (do-times 100 (spawn-fiber (lambda () #t)))) #:drain? #t): ok (0.06 s)
+assert terminates: (run-fibers (lambda () (do-times 1000 (spawn-fiber (lambda () #t)))) #:drain? #t): ok (0.008 s)
+assert terminates: (run-fibers (lambda () (do-times 10000 (spawn-fiber (lambda () #t)))) #:drain? #t): ok (0.049 s)
+assert terminates: (run-fibers (lambda () (do-times 100000 (spawn-fiber (lambda () #t)))) #:drain? #t): ok (0.378 s)
+assert terminates: (run-fibers (lambda () (do-times 100000 (spawn-fiber (lambda () #t) #:parallel? #t))) #:drain? #t): ok (1.197 s)
+assert terminates: (run-fibers (lambda () (do-times 100000 (spawn-fiber loop-to-1e4))) #:drain? #t): ok (4.511 s)
+assert terminates: (run-fibers (lambda () (do-times 100000 (spawn-fiber loop-to-1e4 #:parallel? #t))) #:drain? #t): ok (0.709 s)
+assert terminates: (run-fibers (lambda () (do-times 1 (spawn-fiber (lambda () (sleep 1))))) #:drain? #t): ok (1.045 s)
+assert terminates: (run-fibers (lambda () (do-times 10 (spawn-fiber (lambda () (sleep 1))))) #:drain? #t): ok (1.044 s)
+assert terminates: (run-fibers (lambda () (do-times 100 (spawn-fiber (lambda () (sleep 1))))) #:drain? #t): ok (1.02 s)
+assert terminates: (run-fibers (lambda () (do-times 1000 (spawn-fiber (lambda () (sleep 1))))) #:drain? #t): ok (1.04 s)
+assert terminates: (run-fibers (lambda () (do-times 10000 (spawn-fiber (lambda () (sleep 1))))) #:drain? #t): ok (1.095 s)
+assert terminates: (run-fibers (lambda () (do-times 100000 (spawn-fiber (lambda () (sleep 1))))) #:drain? #t): ok (1.955 s)
+assert terminates: (run-fibers (lambda () (do-times 1000000 (spawn-fiber (lambda () (sleep 1))))) #:drain? #t): ok (13.325 s)
+assert terminates: (run-fibers (lambda () (spawn-fiber-tree 7 (lambda () (sleep 1)))) #:drain? #t): ok (1.101 s)
+assert terminates: (run-fibers (lambda () (spawn-fiber-chain 5)) #:drain? #t): ok (0.006 s)
+assert terminates: (run-fibers (lambda () (spawn-fiber-chain 50)) #:drain? #t): ok (0.006 s)
+assert terminates: (run-fibers (lambda () (spawn-fiber-chain 500)) #:drain? #t): ok (0.044 s)
+assert terminates: (run-fibers (lambda () (spawn-fiber-chain 5000)) #:drain? #t): ok (0.067 s)
+assert terminates: (run-fibers (lambda () (spawn-fiber-chain 50000)) #:drain? #t): ok (0.603 s)
+assert terminates: (run-fibers (lambda () (spawn-fiber-chain 500000)) #:drain? #t): ok (5.724 s)
+assert terminates: (run-fibers (lambda () (spawn-fiber-chain 5000000)) #:drain? #t): ok (54.899 s)
+assert terminates: (run-fibers (lambda () (test-run-order 10)) #:parallelism 1 #:drain? #t): ok (0.026 s)
+assert terminates: (run-fibers (lambda () (test-wakeup-order 10)) #:parallelism 1 #:drain? #t): ok (0.001 s)
+assert terminates: (run-fibers (lambda () 1) #:drain? #t): ok (0.005 s)
 assert run-fiber-return-vals equal to (1): ok
 assert terminates: (run-fibers (lambda () (do-times 20 (check-sleep (random 1.0)))) #:drain? #t): ;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
 ;;;       or pass the --no-auto-compile argument to disable.
@@ -782,40 +818,40 @@
 WARNING: (tests basic): imported module (fibers) overrides core binding `sleep'
 ;;; compiled /build/reproducible-path/guile-fibers-1.3.1/debian/.debhelper/generated/_source/home/.cache/guile/ccache/3.0-LE-4-4.7/build/reproducible-path/guile-fibers-1.3.1/tests/basic.scm.go
 WARNING: (tests basic): imported module (fibers) overrides core binding `sleep'
-assert sleep 0.03770258285738124s < actual 0.039s: #t (diff: 3.4411890228490187%)
-assert sleep 0.08392497972820302s < actual 0.085s: #t (diff: 1.2809300345123857%)
-assert sleep 0.10610807127624393s < actual 0.107s: #t (diff: 0.8405851817191208%)
-assert sleep 0.1268686479044195s < actual 0.128s: #t (diff: 0.8917507313807188%)
-assert sleep 0.12885055848894467s < actual 0.13s: #t (diff: 0.8920733635422774%)
-assert sleep 0.15678650085229529s < actual 0.158s: #t (diff: 0.7739819060366199%)
-assert sleep 0.3600850110832701s < actual 0.361s: #t (diff: 0.2541035834780337%)
-assert sleep 0.39388309777410485s < actual 0.395s: #t (diff: 0.2835618568572646%)
-assert sleep 0.39589085969372495s < actual 0.397s: #t (diff: 0.280163150807053%)
-assert sleep 0.4155045993453954s < actual 0.417s: #t (diff: 0.35989990410707706%)
-assert sleep 0.45528071083706256s < actual 0.456s: #t (diff: 0.15798806007287114%)
-assert sleep 0.5293962526989053s < actual 0.53s: #t (diff: 0.11404449842943533%)
-assert sleep 0.5614609617523041s < actual 0.562s: #t (diff: 0.09600636276004713%)
-assert sleep 0.6266289843878533s < actual 0.628s: #t (diff: 0.21879224330582586%)
-assert sleep 0.6849968374834262s < actual 0.686s: #t (diff: 0.14644775883335565%)
-assert sleep 0.6887285755844857s < actual 0.69s: #t (diff: 0.18460456856102014%)
-assert sleep 0.7827908719154612s < actual 0.784s: #t (diff: 0.15446374350025144%)
-assert sleep 0.9122307602187618s < actual 0.913s: #t (diff: 0.08432513074364503%)
-assert sleep 0.9543932091688012s < actual 0.955s: #t (diff: 0.0635787037637464%)
-assert sleep 0.9993692597852826s < actual 1.0s: #t (diff: 0.06311382990236716%)
-ok (1.016 s)
+assert sleep 0.10034216511301092s < actual 0.101s: #t (diff: 0.6555916809729978%)
+assert sleep 0.19531002852797522s < actual 0.196s: #t (diff: 0.35326986393121323%)
+assert sleep 0.1974734347098482s < actual 0.198s: #t (diff: 0.2666512034519941%)
+assert sleep 0.2013113029221249s < actual 0.202s: #t (diff: 0.34210551910318027%)
+assert sleep 0.27207334414887346s < actual 0.273s: #t (diff: 0.3405904588063973%)
+assert sleep 0.3372933859761617s < actual 0.338s: #t (diff: 0.20949536908151964%)
+assert sleep 0.35210856721650685s < actual 0.353s: #t (diff: 0.25316986477781406%)
+assert sleep 0.42173218739139434s < actual 0.423s: #t (diff: 0.30062030988140687%)
+assert sleep 0.5020614227559456s < actual 0.503s: #t (diff: 0.1869447046742498%)
+assert sleep 0.5029378648182682s < actual 0.504s: #t (diff: 0.21118616354638725%)
+assert sleep 0.5355694083204721s < actual 0.537s: #t (diff: 0.2671160184474051%)
+assert sleep 0.5524402886618491s < actual 0.553s: #t (diff: 0.101316169301605%)
+assert sleep 0.5904753283030019s < actual 0.591s: #t (diff: 0.08885582036187423%)
+assert sleep 0.642540586612897s < actual 0.644s: #t (diff: 0.22713170459724047%)
+assert sleep 0.8506735210653954s < actual 0.852s: #t (diff: 0.15593278758027868%)
+assert sleep 0.8827906501568055s < actual 0.884s: #t (diff: 0.13699169140268194%)
+assert sleep 0.9141920683784146s < actual 0.915s: #t (diff: 0.0883765731000637%)
+assert sleep 0.9373656075845256s < actual 0.938s: #t (diff: 0.06767822612023403%)
+assert sleep 0.9973269386037835s < actual 0.998s: #t (diff: 0.06748653527385283%)
+assert sleep 0.9990385520238075s < actual 1.0s: #t (diff: 0.09623732480040996%)
+ok (1.013 s)
 PASS: tests/basic.scm
 assert (condition? cv) equal to #t: ok
-assert run-fibers on (wait/timeout cv) terminates: ok (0.129 s)
+assert run-fibers on (wait/timeout cv) terminates: ok (0.065 s)
 assert run-fiber-return-vals equal to (#f): ok
-assert run-fibers on (wait/timeout cv) terminates: ok (0.071 s)
+assert run-fibers on (wait/timeout cv) terminates: ok (0.063 s)
 assert run-fiber-return-vals equal to (#f): ok
 assert (signal-condition! cv) equal to #t: ok
 assert (signal-condition! cv) equal to #f: ok
-assert run-fibers on (wait/timeout cv) terminates: ok (0.047 s)
+assert run-fibers on (wait/timeout cv) terminates: ok (0.029 s)
 assert run-fiber-return-vals equal to (#t): ok
-assert run-fibers on (wait/timeout cv) terminates: ok (0.01 s)
+assert run-fibers on (wait/timeout cv) terminates: ok (0.022 s)
 assert run-fiber-return-vals equal to (#t): ok
-assert run-fibers on (let ((cv (make-condition))) (spawn-fiber (lambda () (signal-condition! cv))) (wait cv) #t) terminates: ok (0.097 s)
+assert run-fibers on (let ((cv (make-condition))) (spawn-fiber (lambda () (signal-condition! cv))) (wait cv) #t) terminates: ok (0.01 s)
 assert run-fiber-return-vals equal to (#t): ok
 assert (let ((cv (make-condition))) (run-fibers (lambda () (spawn-fiber (lambda () (wait cv))) (yield-current-task)) #:drain? #f #:hz 0 #:parallelism 1) (signal-condition! cv)) equal to #t: ;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
 ;;;       or pass the --no-auto-compile argument to disable.
@@ -823,15 +859,15 @@
 ;;; compiled /build/reproducible-path/guile-fibers-1.3.1/debian/.debhelper/generated/_source/home/.cache/guile/ccache/3.0-LE-4-4.7/build/reproducible-path/guile-fibers-1.3.1/tests/conditions.scm.go
 ok
 PASS: tests/conditions.scm
-assert run-fibers on (rpc 1) terminates: ok (0.067 s)
+assert run-fibers on (rpc 1) terminates: ok (0.031 s)
 assert run-fiber-return-vals equal to (1): ok
-assert run-fibers on (rpc-fib 24) terminates: ok (1.269 s)
+assert run-fibers on (rpc-fib 24) terminates: ok (3.98 s)
 assert run-fiber-return-vals equal to (75025): ok
 assert run-fibers on (pingpong (current-processor-count) 1000) terminates: ;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
 ;;;       or pass the --no-auto-compile argument to disable.
 ;;; compiling /build/reproducible-path/guile-fibers-1.3.1/b4deb/../tests/channels.scm
 ;;; compiled /build/reproducible-path/guile-fibers-1.3.1/debian/.debhelper/generated/_source/home/.cache/guile/ccache/3.0-LE-4-4.7/build/reproducible-path/guile-fibers-1.3.1/tests/channels.scm.go
-ok (0.048 s)
+ok (0.096 s)
 PASS: tests/channels.scm
 assert #f equal to #f: ok
 assert #t terminates: ok
@@ -846,69 +882,69 @@
 WARNING: (tests foreign): imported module (fibers) overrides core binding `sleep'
 ok
 PASS: tests/foreign.scm
-assert run-fibers on (readable/timeout? s) terminates: ok (0.125 s)
+assert run-fibers on (readable/timeout? s) terminates: ok (0.085 s)
 assert run-fiber-return-vals equal to (#t): ok
 assert (readable/timeout? s) equal to #t: ok
-assert run-fibers on (readable/timeout? A) terminates: ok (0.069 s)
+assert run-fibers on (readable/timeout? A) terminates: ok (0.081 s)
 assert run-fiber-return-vals equal to (#t): ok
 assert (readable/timeout? A) equal to #t: ok
-assert run-fibers on (writable/timeout? B) terminates: ok (0.029 s)
+assert run-fibers on (writable/timeout? B) terminates: ok (0.04 s)
 assert run-fiber-return-vals equal to (#f): ok
 assert (writable/timeout? B) equal to #f: ok
-assert run-fibers on (writable/timeout? B) terminates: ok (0.072 s)
+assert run-fibers on (writable/timeout? B) terminates: ok (0.1 s)
 assert run-fiber-return-vals equal to (#t): ok
-assert run-fibers on (readable/timeout? A) terminates: ok (0.013 s)
+assert run-fibers on (readable/timeout? A) terminates: ok (0.07 s)
 assert run-fiber-return-vals equal to (#f): ;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
 ;;;       or pass the --no-auto-compile argument to disable.
 ;;; compiling /build/reproducible-path/guile-fibers-1.3.1/b4deb/../tests/io-wakeup.scm
 ;;; compiled /build/reproducible-path/guile-fibers-1.3.1/debian/.debhelper/generated/_source/home/.cache/guile/ccache/3.0-LE-4-4.7/build/reproducible-path/guile-fibers-1.3.1/tests/io-wakeup.scm.go
 ok
 PASS: tests/io-wakeup.scm
-assert run-fibers on (my-param) terminates: ok (0.083 s)
+assert run-fibers on (my-param) terminates: ok (0.031 s)
 assert run-fiber-return-vals equal to (#f): ok
-assert run-fibers on (rpc (my-param)) terminates: ok (0.031 s)
+assert run-fibers on (rpc (my-param)) terminates: ok (0.012 s)
 assert run-fiber-return-vals equal to (#f): ok
-assert run-fibers on (rpc (begin (my-param 42) (my-param))) terminates: ok (0.019 s)
+assert run-fibers on (rpc (begin (my-param 42) (my-param))) terminates: ok (0.023 s)
 assert run-fiber-return-vals equal to (42): ok
-assert run-fibers on (my-param) terminates: ok (0.032 s)
+assert run-fibers on (my-param) terminates: ok (0.1 s)
 assert run-fiber-return-vals equal to (#f): ok
-assert run-fibers on (begin (my-param 100) (rpc (my-param))) terminates: ok (0.01 s)
+assert run-fibers on (begin (my-param 100) (rpc (my-param))) terminates: ok (0.011 s)
 assert run-fiber-return-vals equal to (100): ok
-assert run-fibers on (my-param) terminates: ok (0.03 s)
+assert run-fibers on (my-param) terminates: ok (0.06 s)
 assert run-fiber-return-vals equal to (#f): ok
 assert (my-param) equal to #f: ok
 assert (begin (my-param (quote foo)) (my-param)) equal to foo: ok
-assert run-fibers on (my-param) terminates: ok (0.011 s)
+assert run-fibers on (my-param) terminates: ok (0.007 s)
 assert run-fiber-return-vals equal to (foo): ok
-assert run-fibers on (rpc (my-param)) terminates: ok (0.033 s)
+assert run-fibers on (rpc (my-param)) terminates: ok (0.042 s)
 assert run-fiber-return-vals equal to (foo): ;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
 ;;;       or pass the --no-auto-compile argument to disable.
 ;;; compiling /build/reproducible-path/guile-fibers-1.3.1/b4deb/../tests/parameters.scm
 ;;; compiled /build/reproducible-path/guile-fibers-1.3.1/debian/.debhelper/generated/_source/home/.cache/guile/ccache/3.0-LE-4-4.7/build/reproducible-path/guile-fibers-1.3.1/tests/parameters.scm.go
 ok
 PASS: tests/parameters.scm
-assert run-fibers on (let lp ((n 0)) (when (< n 100000000) (lp (#{1+}# n)))) terminates: ok (0.358 s)
-assert run-fibers on (race-until 100) terminates: ok (2.41 s)
+assert run-fibers on (let lp ((n 0)) (when (< n 100000000) (lp (#{1+}# n)))) terminates: ok (0.563 s)
+assert run-fibers on (race-until 100) terminates: ok (1.584 s)
 assert run-fiber-return-vals equal to (100): ;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
 ;;;       or pass the --no-auto-compile argument to disable.
 ;;; compiling /build/reproducible-path/guile-fibers-1.3.1/b4deb/../tests/preemption.scm
 ;;; compiled /build/reproducible-path/guile-fibers-1.3.1/debian/.debhelper/generated/_source/home/.cache/guile/ccache/3.0-LE-4-4.7/build/reproducible-path/guile-fibers-1.3.1/tests/preemption.scm.go
 ok
 PASS: tests/preemption.scm
-speedup for (do-times 100000 (spawn-fiber (lambda () #t) #:parallel? #t)): 0.149 s / 0.646 s = 0.23065015479876158x (24 cpus)
-speedup for (do-times 40000 (spawn-fiber (lambda () (sleep 1)) #:parallel? #t)): 1.109 s / 1.241 s = 0.8936341659951651x (24 cpus)
-speedup for (do-times 100000 (spawn-fiber (lambda () (loop-to 10000)) #:parallel? #t)): 2.373 s / 0.63 s = 3.766666666666667x (24 cpus)
-speedup for (do-times 10000 (spawn-fiber (lambda () (loop-to 100000)) #:parallel? #t)): 2.254 s / 0.157 s = 14.356687898089172x (24 cpus)
-speedup for (do-times 1000 (spawn-fiber (lambda () (loop-to 1000000)) #:parallel? #t)): 2.24 s / 0.135 s = 16.59259259259259x (24 cpus)
-speedup for (do-times 100000 (spawn-fiber (lambda () (alloc-to 4 1000)) #:parallel? #t)): 3.39 s / 3.244 s = 1.0450061652281135x (24 cpus)
-speedup for (do-times 10000 (spawn-fiber (lambda () (alloc-to 4 10000)) #:parallel? #t)): 3.136 s / 3.11 s = 1.0083601286173633x (24 cpus)
+speedup for (do-times 100000 (spawn-fiber (lambda () #t) #:parallel? #t)): 0.345 s / 0.923 s = 0.3737811484290357x (13 cpus)
+speedup for (do-times 40000 (spawn-fiber (lambda () (sleep 1)) #:parallel? #t)): 1.509 s / 1.839 s = 0.8205546492659054x (13 cpus)
+speedup for (do-times 100000 (spawn-fiber (lambda () (loop-to 10000)) #:parallel? #t)): 4.086 s / 0.566 s = 7.219081272084807x (13 cpus)
+speedup for (do-times 10000 (spawn-fiber (lambda () (loop-to 100000)) #:parallel? #t)): 3.921 s / 0.398 s = 9.851758793969848x (13 cpus)
+speedup for (do-times 1000 (spawn-fiber (lambda () (loop-to 1000000)) #:parallel? #t)): 3.892 s / 0.411 s = 9.469586374695863x (13 cpus)
+speedup for (do-times 100000 (spawn-fiber (lambda () (alloc-to 4 1000)) #:parallel? #t)): 5.684 s / 9.435 s = 0.6024377318494966x (13 cpus)
+speedup for (do-times 10000 (spawn-fiber (lambda () (alloc-to 4 10000)) #:parallel? #t)): 5.118 s / 9.775 s = 0.5235805626598465x (13 cpus)
 speedup for (do-times 1000 (spawn-fiber (lambda () (alloc-to 4 100000)) #:parallel? #t)): ;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
 ;;;       or pass the --no-auto-compile argument to disable.
 ;;; compiling /build/reproducible-path/guile-fibers-1.3.1/b4deb/../tests/speedup.scm
 WARNING: (tests speedup): imported module (fibers) overrides core binding `sleep'
 ;;; compiled /build/reproducible-path/guile-fibers-1.3.1/debian/.debhelper/generated/_source/home/.cache/guile/ccache/3.0-LE-4-4.7/build/reproducible-path/guile-fibers-1.3.1/tests/speedup.scm.go
 WARNING: (tests speedup): imported module (fibers) overrides core binding `sleep'
-3.058 s / 3.146 s = 0.972027972027972x (24 cpus)
+5.413 s / 7.586 s = 0.7135512786712365x (13 cpus)
 PASS: tests/speedup.scm
 ;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
 ;;;       or pass the --no-auto-compile argument to disable.
@@ -935,7 +971,7 @@
 
 ;;; (listening-socket #<input-output: socket 13>)
 
-;;; (accepted-connection (#<input-output: socket 14> . #(2 2130706433 40026)))
+;;; (accepted-connection (#<input-output: socket 14> . #(2 2130706433 39834)))
 
 ;;; (connected #(2 2130706433 5556))
 
@@ -969,7 +1005,7 @@
 make[4]: Entering directory '/build/reproducible-path/guile-fibers-1.3.1/b4deb'
 make[4]: Nothing to be done for 'install-exec-am'.
  /usr/bin/mkdir -p '/build/reproducible-path/guile-fibers-1.3.1/debian/tmp/usr/lib/i386-linux-gnu/guile/3.0/extensions'
- /bin/bash ./libtool   --mode=install /usr/bin/install -c   fibers-epoll.la '/build/reproducible-path/guile-fibers-1.3.1/debian/tmp/usr/lib/i386-linux-gnu/guile/3.0/extensions'
+ /bin/sh ./libtool   --mode=install /usr/bin/install -c   fibers-epoll.la '/build/reproducible-path/guile-fibers-1.3.1/debian/tmp/usr/lib/i386-linux-gnu/guile/3.0/extensions'
 libtool: install: /usr/bin/install -c .libs/fibers-epoll.so.0.0.0 /build/reproducible-path/guile-fibers-1.3.1/debian/tmp/usr/lib/i386-linux-gnu/guile/3.0/extensions/fibers-epoll.so.0.0.0
 libtool: install: (cd /build/reproducible-path/guile-fibers-1.3.1/debian/tmp/usr/lib/i386-linux-gnu/guile/3.0/extensions && { ln -s -f fibers-epoll.so.0.0.0 fibers-epoll.so.0 || { rm -f fibers-epoll.so.0 && ln -s fibers-epoll.so.0.0.0 fibers-epoll.so.0; }; })
 libtool: install: (cd /build/reproducible-path/guile-fibers-1.3.1/debian/tmp/usr/lib/i386-linux-gnu/guile/3.0/extensions && { ln -s -f fibers-epoll.so.0.0.0 fibers-epoll.so || { rm -f fibers-epoll.so && ln -s fibers-epoll.so.0.0.0 fibers-epoll.so; }; })
@@ -1026,8 +1062,8 @@
    dh_gencontrol -O--builddirectory=b4deb
    dh_md5sums -O--builddirectory=b4deb
    dh_builddeb -O--builddirectory=b4deb
-dpkg-deb: building package 'guile-fibers' in '../guile-fibers_1.3.1-5_i386.deb'.
 dpkg-deb: building package 'guile-fibers-dbgsym' in '../guile-fibers-dbgsym_1.3.1-5_i386.deb'.
+dpkg-deb: building package 'guile-fibers' in '../guile-fibers_1.3.1-5_i386.deb'.
  dpkg-genbuildinfo --build=binary -O../guile-fibers_1.3.1-5_i386.buildinfo
  dpkg-genchanges --build=binary -O../guile-fibers_1.3.1-5_i386.changes
 dpkg-genchanges: info: binary-only upload (no source code included)
@@ -1035,12 +1071,14 @@
 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/5619/tmp/hooks/B01_cleanup starting
+I: user script /srv/workspace/pbuilder/5619/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/88713 and its subdirectories
-I: Current time: Wed Apr 22 11:06:46 -12 2026
-I: pbuilder-time-stamp: 1776899206
+I: removing directory /srv/workspace/pbuilder/5619 and its subdirectories
+I: Current time: Fri Mar 21 06:47:54 +14 2025
+I: pbuilder-time-stamp: 1742489274