E1012

Unreachable code. This usually happens when a return statement is followed by more code. The return statement will exit the function immediately, so any code after it will not be executed.

Erroneous example

fn main {
  return
  println("Hello, World!")
}

Suggestion

Remove the unreachable code, or move it before the return statement if you want the code to be executed.

fn main {
  println("Hello, World!")
  return
}