[crossguid:x64-osx] build failure

[rocketman123456]

Host Environment

• OS: [MacOS Catalina]
• Compiler: clang

To Reproduce
Steps to reproduce the behavior:
./vcpkg install crossguid

Failure logs

CMake Error at scripts/cmake/vcpkg_execute_build_process.cmake:145 (message):
    Command failed: /Users/developer/Program/vcpkg/downloads/tools/cmake-3.19.2-osx/cmake-3.19.2-macos-universal/CMake.app/Contents/bin/cmake --build . --config Debug --target install -- -v -j17
    Working Directory: /Users/developer/Program/vcpkg/buildtrees/crossguid/x64-osx-dbg
    See logs for more information:
      /Users/developer/Program/vcpkg/buildtrees/crossguid/install-x64-osx-dbg-out.log

Call Stack (most recent call first):
  scripts/cmake/vcpkg_build_cmake.cmake:96 (vcpkg_execute_build_process)
  scripts/cmake/vcpkg_install_cmake.cmake:27 (vcpkg_build_cmake)
  ports/crossguid/portfile.cmake:18 (vcpkg_install_cmake)
  scripts/ports.cmake:136 (include)

install-x64-osx-dbg-out.log

[1/3] /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -DGUID_CFUUID -I/Users/developer/Program/vcpkg/buildtrees/crossguid/src/365d430337-f320045b03.clean/include -fPIC -g -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk -Werror -Wall -std=c++11 -MD -MT CMakeFiles/crossguid.dir/src/guid.cpp.o -MF CMakeFiles/crossguid.dir/src/guid.cpp.o.d -o CMakeFiles/crossguid.dir/src/guid.cpp.o -c /Users/developer/Program/vcpkg/buildtrees/crossguid/src/365d430337-f320045b03.clean/src/guid.cpp
FAILED: CMakeFiles/crossguid.dir/src/guid.cpp.o 
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -DGUID_CFUUID -I/Users/developer/Program/vcpkg/buildtrees/crossguid/src/365d430337-f320045b03.clean/include -fPIC -g -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk -Werror -Wall -std=c++11 -MD -MT CMakeFiles/crossguid.dir/src/guid.cpp.o -MF CMakeFiles/crossguid.dir/src/guid.cpp.o.d -o CMakeFiles/crossguid.dir/src/guid.cpp.o -c /Users/developer/Program/vcpkg/buildtrees/crossguid/src/365d430337-f320045b03.clean/src/guid.cpp
/Users/developer/Program/vcpkg/buildtrees/crossguid/src/365d430337-f320045b03.clean/src/guid.cpp:403:7: error: unused function 'swap' [-Werror,-Wunused-function]
        void swap(xg::Guid &lhs, xg::Guid &rhs)
             ^
1 error generated.
ninja: build stopped: subcommand failed.

[JackBoosY]

See upstream issue.