Change some pub to pub(crate) in std

Author: clubby789

library/std/src/collections/hash/mod.rs

@@ -1,4 +1,4 @@
 //! Unordered containers, implemented as hash-tables
 
-pub mod map;
-pub mod set;
+pub(crate) mod map;
+pub(crate) mod set;

library/std/src/error.rs

@@ -15,7 +15,7 @@ mod private {
     // implementations, since that can enable unsound downcasting.
     #[unstable(feature = "error_type_id", issue = "60784")]
     #[derive(Debug)]
-    pub struct Internal;
+    pub(crate) struct Internal;
 }
 
 /// An error reporter that prints an error and its sources.