This bug was fixed in the package initramfs-tools - 0.122ubuntu8.10
--------------- initramfs-tools (0.122ubuntu8.10) xenial; urgency=medium
* mkinitramfs: Delete or report temporary files in /var/tmp/ on failure. (LP: #1713004)
-- Brian Murray <email address hidden> Tue, 05 Dec 2017 11:17:43 -0800
This bug was fixed in the package initramfs-tools - 0.122ubuntu8.10
---------------
initramfs-tools (0.122ubuntu8.10) xenial; urgency=medium
* mkinitramfs: Delete or report temporary files in /var/tmp/ on failure.
(LP: #1713004)
-- Brian Murray <email address hidden> Tue, 05 Dec 2017 11:17:43 -0800