message: Future proof an unstable test
  statics (even extern ones) will get their type checked for a `Sized` bound in order to fix
diff: @@ -571,6 +571,9 @@ fn doc_target() {
  #![feature(no_core)]
  #![no_core]
  + #[lang = "sized"]
  + trait Sized {}
  +
  extern {
  pub static A: u32;
  }
  