Auto merge of #21677 - japaric:no-range, r=alexcrichton

Note: Do not merge until we get a newer snapshot that includes #21374

There was some type inference fallout (see 4th commit) because type inference with `a..b` is not as good as with `range(a, b)` (see #21672).

r? @alexcrichton 

1 files changed, 4 insertions, 4 deletions

diff --git a/src/libsyntax/ast_map/mod.rs b/src/libsyntax/ast_map/mod.rs
index 002e003afcb..8546e03cc87 100644
--- a/src/libsyntax/ast_map/mod.rs
+++ b/src/libsyntax/ast_map/mod.rs
@@ -32,7 +32,7 @@ use std::slice;
 
 pub mod blocks;
 
-#[derive(Clone, Copy, PartialEq, Show)]
+#[derive(Clone, Copy, PartialEq, Debug)]
 pub enum PathElem {
     PathMod(Name),
     PathName(Name)
@@ -91,7 +91,7 @@ pub fn path_to_string<PI: Iterator<Item=PathElem>>(path: PI) -> String {
     })
 }
 
-#[derive(Copy, Show)]
+#[derive(Copy, Debug)]
 pub enum Node<'ast> {
     NodeItem(&'ast Item),
     NodeForeignItem(&'ast ForeignItem),
@@ -113,7 +113,7 @@ pub enum Node<'ast> {
 
 /// Represents an entry and its parent Node ID
 /// The odd layout is to bring down the total size.
-#[derive(Copy, Show)]
+#[derive(Copy, Debug)]
 enum MapEntry<'ast> {
     /// Placeholder for holes in the map.
     NotPresent,
@@ -144,7 +144,7 @@ impl<'ast> Clone for MapEntry<'ast> {
     }
 }
 
-#[derive(Show)]
+#[derive(Debug)]
 struct InlinedParent {
     path: Vec<PathElem>,
     ii: InlinedItem