^CMake Error at .*/Tests/RunCMake/try_compile/CStandard-build/CMakeFiles/CMakeTmp/CMakeLists.txt:[0-9]+ \(add_executable\):
  C_STANDARD is set to invalid value '3'
+
CMake Error at CStandard.cmake:[0-9]+ \(try_compile\):
  Failed to generate test project build system.
Call Stack \(most recent call first\):
  CMakeLists.txt:[0-9]+ \(include\)$
