Comment 4 for bug 2004133

This bug only affects zfs systems that have modified fstab without reloading systemd.

Essentially we run find on $boot_dir which is set as

    # read available kernels from /boot
    boot_dir="$(try_default_layout_bpool "${dataset}" "${mntdir}")"
    if [ -z "${boot_dir}" ]; then
        boot_dir=$(get_system_directory "${dataset}" "boot" "false" "${mntdir}" "${etc_dir}")
    fi

which somehow ends up being

'mount: (hint) your fstab has been modified, but systemd still uses\n the old version; use 'systemctl daemon-reload' to reload.\n/tmp/zfsmnt.liPzsI/boot'

It's not clear to me why the hint is on stdout in the first place.

This then causes the script to exit, which causes the trap to run which is broken due to bug 2031042.