message: Allow doc tests to run on proc macro crates
diff: @@ -382,7 +382,11 @@ impl Target {
  pub fn doctested(&self) -> bool {
  self.doctest && match self.kind {
  TargetKind::Lib(ref kinds) => {
  - kinds.contains(&LibKind::Rlib) || kinds.contains(&LibKind::Lib)
  + kinds.iter().find(|k| {
  + *k == &LibKind::Rlib ||
  + *k == &LibKind::Lib ||
  + *k == &LibKind::ProcMacro
  + }).is_some()
  }
  _ => false,
  }
  