concurrency/mainError.cfa:1:1 error: thread keyword requires threads to be in scope, add #include <thread.hfa>
thread Test with body

concurrency/mainError.cfa:2:1 error: thread keyword requires threads to be in scope, add #include <thread.hfa>
main: function
... with parameters
  reference to instance of struct Test with body
... returning nothing
 with body
  Compound Statement: