zfs-dkms 0.6.5.6-0ubuntu4: zfs kernel module failed to build

[Carla Sella]

This crash report occured after first reboot after updating Xenial.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: zfs-dkms 0.6.5.6-0ubuntu4
ProcVersionSignature: Ubuntu 4.4.0-17.33-generic 4.4.6
Uname: Linux 4.4.0-17-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
ApportVersion: 2.20.1-0ubuntu1
Architecture: amd64
DKMSBuildLog:
 DKMS make.log for zfs-0.6.5.6 for kernel 4.4.0-17-generic (x86_64)
 sab 2 apr 2016, 12.06.49, CEST
 make: *** No targets specified and no makefile found. Stop.
DKMSKernelVersion: 4.4.0-17-generic
Date: Sat Apr 2 12:06:56 2016
InstallationDate: Installed on 2015-10-12 (173 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20151012)
PackageVersion: 0.6.5.6-0ubuntu4
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.9
SourcePackage: zfs-linux
Title: zfs-dkms 0.6.5.6-0ubuntu4: zfs kernel module failed to build
UpgradeStatus: Upgraded to xenial on 2015-10-28 (157 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.