On osx (compiled with native clang) with Python 3 (3.4 and 3.5 from conda) when running ctest I get this error:

***Exception: SegFault 
test_load_obj_with_material (test_read_write_obj.ReadWriteOBJ) ...

However the test passes with Python 2.7, and on Linux it passes with Python3.4/3.5 too, but I dont see anything python3-specific here.