gzip: stdout: No space left on device
E: mkinitramfs failure cpio 141 gzip 1
update-initramfs: failed for /boot/initrd.img-3.18.3 with 1.
run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1
arch/x86/boot/Makefile:185: recipe for target 'install' failed
make[1]: *** [install] Error 1
arch/x86/Makefile:239: recipe for target 'install' failed
make: *** [install] Error 2