ethminer benchmarking mode llvm error

Question

I recently installed ethminer from the new active repository: https://github.com/ethereum-mining/ethminer

ethminer --version returns:

ethminer version 0.11.0.dev0
Build: Linux/g++/Release

My OS version is ubuntu 16.04 with kernel version 4.4.0-83-generic. I have an Intel Skylake graphic card, and OpenCL 1.2 installed with beignet 1.1.1. llvm 3.8-33 is also installed

When running ethminer in benchmarking mode (-M option), I faced this issue:

> ethminer -M -G 
[OPENCL]:Found suitable OpenCL device [Intel(R) HD Graphics Skylake ULT GT2] with 2147483648 bytes of GPU memory
Benchmarking on platform: CL
Preparing DAG for block #0
Warming up...
  ℹ  14:14:09|openclminer0  set work; seed: #00000000, target:  #000000000000
  ℹ  14:14:09|openclminer0  Initialising miner...
[OPENCL]:Using platform: Intel Gen OCL Driver
[OPENCL]:Using device: Intel(R) HD Graphics Skylake ULT GT2(OpenCL 1.2 beignet 1.1.1)
ASSERTION FAILED: Not implemented
  at file /build/beignet-5qGeBM/beignet-1.1.1/backend/src/llvm/llvm_scalarize.cpp, function bool gbe::Scalarize::scalarizeExtract(llvm::ExtractElementInst*), line 722
[1]    2772 trace trap (core dumped)  ethminer -M -G 

How can I fix this?