Setting up ubuntu-release-upgrader-core (1:16.04.22) ...
Setting up update-manager-core (1:16.04.8) ...
Processing triggers for libc-bin (2.23-0ubuntu9) ...
Processing triggers for initramfs-tools (0.122ubuntu8.8) ...
update-initramfs: Generating /boot/initrd.img-4.4.0-92-generic
cryptsetup: WARNING: failed to detect canonical device of /dev/xvda1
cryptsetup: WARNING: could not determine root device from /etc/fstab
W: mdadm: /etc/mdadm/mdadm.conf defines no arrays.