[HOOK - conan-center.py] pre_export(): ERROR: [NO REQUIRES.ADD() (KB-H044)] The method 'self.requires.add()' is not allowed. Use 'self.requires()' instead. (https://github.com/conan-io/conan-center-index/wiki/Error-Knowledge-Base#KB-H044) 
[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/libcoap/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