CMake Warning: Manually-specified variables were not used by the project: CMAKE_INSTALL_BINDIR CMAKE_INSTALL_DATAROOTDIR CMAKE_INSTALL_INCLUDEDIR CMAKE_INSTALL_LIBDIR CMAKE_INSTALL_LIBEXECDIR CMAKE_INSTALL_OLDINCLUDEDIR CMAKE_INSTALL_SBINDIR In file included from /home/conan/w/cci_PR-3494/.conan/data/yaml-cpp/0.6.3/_/_/build/b28bcde4cbb80d2db194739511c07ae209a4ab3a/source_subfolder/include/yaml-cpp/node/convert.h:18:0, from /home/conan/w/cci_PR-3494/.conan/data/yaml-cpp/0.6.3/_/_/build/b28bcde4cbb80d2db194739511c07ae209a4ab3a/source_subfolder/src/convert.cpp:3: /home/conan/w/cci_PR-3494/.conan/data/yaml-cpp/0.6.3/_/_/build/b28bcde4cbb80d2db194739511c07ae209a4ab3a/source_subfolder/include/yaml-cpp/node/impl.h: In member function ‘YAML::Node& YAML::Node::operator=(const T&)’: /home/conan/w/cci_PR-3494/.conan/data/yaml-cpp/0.6.3/_/_/build/b28bcde4cbb80d2db194739511c07ae209a4ab3a/source_subfolder/include/yaml-cpp/node/impl.h:212:11: warning: ‘operator=’ should return a reference to ‘*this’ [-Weffc++] return *this; ^~~~ In file included from /home/conan/w/cci_PR-3494/.conan/data/yaml-cpp/0.6.3/_/_/build/b28bcde4cbb80d2db194739511c07ae209a4ab3a/source_subfolder/src/nodebuilder.cpp:6:0: /home/conan/w/cci_PR-3494/.conan/data/yaml-cpp/0.6.3/_/_/build/b28bcde4cbb80d2db194739511c07ae209a4ab3a/source_subfolder/include/yaml-cpp/node/impl.h: In member function ‘YAML::Node& YAML::Node::operator=(const T&)’: /home/conan/w/cci_PR-3494/.conan/data/yaml-cpp/0.6.3/_/_/build/b28bcde4cbb80d2db194739511c07ae209a4ab3a/source_subfolder/include/yaml-cpp/node/impl.h:212:11: warning: ‘operator=’ should return a reference to ‘*this’ [-Weffc++] return *this; ^~~~ In file included from /home/conan/w/cci_PR-3494/.conan/data/yaml-cpp/0.6.3/_/_/build/b28bcde4cbb80d2db194739511c07ae209a4ab3a/source_subfolder/src/parse.cpp:7:0: /home/conan/w/cci_PR-3494/.conan/data/yaml-cpp/0.6.3/_/_/build/b28bcde4cbb80d2db194739511c07ae209a4ab3a/source_subfolder/include/yaml-cpp/node/impl.h: In member function ‘YAML::Node& YAML::Node::operator=(const T&)’: /home/conan/w/cci_PR-3494/.conan/data/yaml-cpp/0.6.3/_/_/build/b28bcde4cbb80d2db194739511c07ae209a4ab3a/source_subfolder/include/yaml-cpp/node/impl.h:212:11: warning: ‘operator=’ should return a reference to ‘*this’ [-Weffc++] return *this; ^~~~ CMake Warning: Manually-specified variables were not used by the project: CMAKE_EXPORT_NO_PACKAGE_REGISTRY