message: Bump hashed metadata version
diff: @@ -490,7 +490,7 @@ fn compute_metadata(
  // cause a new hash due to the rustc version changing, but this allows
  // cargo to be extra careful to deal with different versions of cargo that
  // use the same rustc version.
  - 1.hash(&mut hasher);
  + 2.hash(&mut hasher);
  // Unique metadata per (name, source, version) triple. This'll allow us
  // to pull crates from anywhere without worrying about conflicts.
  