[HOOK - conan-center.py] pre_export(): ERROR: [CMAKE VERSION REQUIRED (KB-H048)] The test_packages/CMakeLists.txt requires CMake 3.1 at least. Update to 'cmake_minimum_required(VERSION 3.1)'. (https://github.com/conan-io/conan-center-index/blob/master/docs/error_knowledge_base.md#KB-H048) 
ERROR: [HOOK - conan-center.py] pre_export(): Some checks failed running the hook, check the output