ENOSPC when building with devtools
systemd-nspawn, which by default mounts a tmpfs with
size=10% to the
/tmp directory inside the container. This may not be enough for e.g. large LTO-enabled packages.
A possible workaround is to instruct
systemd-nspawn to not mount a tmpfs and use the directory as is:
# SYSTEMD_NSPAWN_TMPFS_TMP=0 extra-x86_64-build