Module build for the currently running kernel was skipped since the
kernel source for this kernel does not seem to be installed.
I regularly reinstall my graphics drivers, but can never seem to remember where the link to the kernel source/headers should be for DKMS to find it automatically. Here it is for reference, assuming your kernel source/headers are placed at /usr/src/linux-<kernelversion>:
# unlink /lib/modules/$(uname -r)/build
# ln -s /usr/src/linux-$(uname -r) /lib/modules/$(uname -r)/build