cmd: mmdebstrap --mode=unshare --format=tar --architectures=ppc64el --verbose '--customize-hook=cd "$1" && find etc/apt/sources.list.d -type f -delete' '--customize-hook=upload /tmp/debusine-fetch-exec-upload-lb4ik3ll/chroot.sources /etc/apt/sources.list.d/file.sources' '--customize-hook=mkdir "$1/etc/apt/keyrings-debusine"' --include=ubuntu-keyring '--customize-hook=download /etc/os-release os-release' '--customize-hook=copy-out /var/lib/dpkg var_lib_dpkg' '--customize-hook=rm -f "$1/etc/hostname"' '--customize-hook=test -h "$1/etc/resolv.conf" || rm -f "$1/etc/resolv.conf"' --skip=chroot/start-stop-daemon '--customize-hook=upload /tmp/debusine-fetch-exec-upload-lb4ik3ll/customization_script /customization_script' '--customize-hook=chmod 555 "$1/customization_script"' '--customize-hook=chroot "$1" /customization_script' '--customize-hook=rm "$1/customization_script"' '--customize-hook=(test -x "$1/sbin/init" || test -h "$1/sbin/init") ; echo $? > "$1/test_sbin_init"' '--customize-hook=download test_sbin_init test-sbin-init' '--customize-hook=rm "$1/test_sbin_init"' --variant=minbase --include=tzdata '' system.tar.xz '' /tmp/debusine-fetch-exec-upload-lb4ik3ll/host.sources
output (contains stdout and stderr):
I: chroot architecture ppc64el is equal to the host's architecture
I: using /tmp/mmdebstrap.DreTKQb0j6 as tempdir
I: running apt-get update...
Get:1 http://ports.ubuntu.com resolute InRelease [124 kB]
Err:1 http://ports.ubuntu.com resolute InRelease
  Sub-process /usr/bin/sqv returned an error code (1), error message is: Missing key F6ECB3762474EDA9D21B7022871920D1991BC93C, which is needed to verify signature.
Reading package lists...
W: OpenPGP signature verification failed: http://ports.ubuntu.com resolute InRelease: Sub-process /usr/bin/sqv returned an error code (1), error message is: Missing key F6ECB3762474EDA9D21B7022871920D1991BC93C, which is needed to verify signature.
E: The repository 'http://ports.ubuntu.com resolute InRelease' is not signed.
E: apt-get update --error-on=any -oAPT::Status-Fd=<$fd> -oDpkg::Use-Pty=false failed: process exited with 100 and error in console output
W: hooklistener errored out: E: received eof on socket

I: main() received signal PIPE: waiting for setup...
I: removing tempdir /tmp/mmdebstrap.DreTKQb0j6...
E: mmdebstrap failed to run

aborted: False
returncode: 25

Files in working directory:
system.tar.xz
--------------------