grub2 fails to emerge: problem with patch in prepare phase

[--->yoalli<---]

In a fresh funtoo installation i have the problem just after compiling and installing a new kernel with its respective better-initrafms ready to work, the next logical step now is to install a boot loader, in this case i'm following the funtoo installation tutorial:

emerge boot-update

but fails in the part of emerging grub: Failed Patch: 0002-grub-install-support-for-partitioned-partx-loop-devi.patch !

 

Ii'm attaching the build log here :

[32;01m * [39;49;00mPackage:    sys-boot/grub-2.02_beta2-r3
[32;01m * [39;49;00mRepository: gentoo
[32;01m * [39;49;00mMaintainer: funtoo
[32;01m * [39;49;00mUSE:        amd64 binfont elibc_glibc grub_platforms_efi-64 grub_platforms_pc kernel_linux nls userland_GNU
[32;01m * [39;49;00mFEATURES:   preserve-libs sandbox
>>> Unpacking source...
>>> Unpacking grub-2.02~beta2.tar.xz to /var/tmp/portage/sys-boot/grub-2.02_beta2-r3/work
>>> Unpacking unifont-7.0.01.pcf.gz to /var/tmp/portage/sys-boot/grub-2.02_beta2-r3/work
>>> Unpacking unifont-1.0.pf2.xz to /var/tmp/portage/sys-boot/grub-2.02_beta2-r3/work
>>> Source unpacked in /var/tmp/portage/sys-boot/grub-2.02_beta2-r3/work
>>> Preparing source in /var/tmp/portage/sys-boot/grub-2.02_beta2-r3/work/grub-2.02~beta2 ...
 [32;01m*[0m Applying various patches (bugfixes/updates) ...
 [32;01m*[0m   0001-Makefile.util.def-Link-grub-ofpathname-with-zfs-libs.patch ...
[A[123C [34;01m[ [32;01mok[34;01m ][0m
 [32;01m*[0m   0002-grub-install-support-for-partitioned-partx-loop-devi.patch ...

 [31;01m*[0m Failed Patch: 0002-grub-install-support-for-partitioned-partx-loop-devi.patch !
 [31;01m*[0m  ( /usr/portage/sys-boot/grub/files/2.02_beta2/0002-grub-install-support-for-partitioned-partx-loop-devi.patch )
 [31;01m*[0m 
 [31;01m*[0m Include in your bugreport the contents of:
 [31;01m*[0m 
 [31;01m*[0m   /var/tmp/portage/sys-boot/grub-2.02_beta2-r3/temp/0002-grub-install-support-for-partitioned-partx-loop-devi.patch.out

 [31;01m*[0m ERROR: sys-boot/grub-2.02_beta2-r3 failed (prepare phase):
 [31;01m*[0m   Failed Patch: 0002-grub-install-support-for-partitioned-partx-loop-devi.patch!
 [31;01m*[0m 
 [31;01m*[0m Call stack:
 [31;01m*[0m     ebuild.sh, line   93:  Called src_prepare
 [31;01m*[0m   environment, line 4635:  Called epatch
 [31;01m*[0m   environment, line 1951:  Called die
 [31;01m*[0m The specific snippet of code:
 [31;01m*[0m               die "Failed Patch: ${patchname}!";
 [31;01m*[0m 
 [31;01m*[0m If you need support, post the output of `emerge --info '=sys-boot/grub-2.02_beta2-r3'`,
 [31;01m*[0m the complete build log and the output of `emerge -pqv '=sys-boot/grub-2.02_beta2-r3'`.
 [31;01m*[0m The complete build log is located at '/var/tmp/portage/sys-boot/grub-2.02_beta2-r3/temp/build.log'.
 [31;01m*[0m The ebuild environment file is located at '/var/tmp/portage/sys-boot/grub-2.02_beta2-r3/temp/environment'.
 [31;01m*[0m Working directory: '/var/tmp/portage/sys-boot/grub-2.02_beta2-r3/work/grub-2.02~beta2'
 [31;01m*[0m S: '/var/tmp/portage/sys-boot/grub-2.02_beta2-r3/work/grub-2.02~beta2'

Do i need to mask the grub-2.02_beta2-r3? Thanks in advance :)