[HOOK - conan-center.py] pre_export(): ERROR: [CMAKE MINIMUM VERSION (KB-H028)] The CMake file 'recipes/libelf/all/test_package/CMakeLists.txt' must contain a minimum version declared at the beginning (e.g. cmake_minimum_required(VERSION 3.1.2)) (https://github.com/conan-io/conan-center-index/wiki/Error-Knowledge-Base#KB-H028) 
[HOOK - conan-center.py] pre_export(): ERROR: [NO AUTHOR (KB-H037)] Conanfile should not contain author. Remove 'author = "Bincrafters <bincrafters@gmail.com>"' (https://github.com/conan-io/conan-center-index/wiki/Error-Knowledge-Base#KB-H037) 
[HOOK - conan-center.py] pre_export(): ERROR: [CMAKE VERBOSE MAKEFILE (KB-H046)] The CMake definition 'set(CMAKE_VERBOSE_MAKEFILE ON)' is not allowed. Remove it from recipes/libelf/all/test_package/CMakeLists.txt. (https://github.com/conan-io/conan-center-index/wiki/Error-Knowledge-Base#KB-H046) 
ERROR: [HOOK - conan-center.py] pre_export(): Some checks failed running the hook, check the output