^CMake Error at .*/Modules/CMakeDetermineSwiftCompiler.cmake:[0-9]+ \(message\):
  Swift language not supported by Xcode [0-9.]+
Call Stack \(most recent call first\):
  XcodeTooOld.cmake:[0-9]+ \(enable_language\)
  CMakeLists.txt:[0-9]+ \(include\)