Rollup merge of #68459 - matthiaskrgr:clone_on_copy2, r=eddyb

don't clone types that are copy, round two.

Apparently fixing some of these issues makes clippy find even more so I did a couple of rounds now.

r? @eddyb

Author: Mark-Simulacrum

src/librustc/infer/fudge.rs

@@ -19,7 +19,7 @@ fn const_vars_since_snapshot<'tcx>(
     (
         range.start..range.end,
         (range.start.index..range.end.index)
-            .map(|index| table.probe_value(ConstVid::from_index(index)).origin.clone())
+            .map(|index| table.probe_value(ConstVid::from_index(index)).origin)
             .collect(),
     )
 }

src/librustc/infer/lexical_region_resolve/mod.rs

@@ -611,7 +611,7 @@ impl<'cx, 'tcx> LexicalResolver<'cx, 'tcx> {
 
             errors.push(RegionResolutionError::GenericBoundFailure(
                 verify.origin.clone(),
-                verify.kind.clone(),
+                verify.kind,
                 sub,
             ));
         }
@@ -761,7 +761,7 @@ impl<'cx, 'tcx> LexicalResolver<'cx, 'tcx> {
 
             for upper_bound in &upper_bounds {
                 if !self.region_rels.is_subregion_of(effective_lower_bound, upper_bound.region) {
-                    let origin = self.var_infos[node_idx].origin.clone();
+                    let origin = self.var_infos[node_idx].origin;
                     debug!(
                         "region inference error at {:?} for {:?}: SubSupConflict sub: {:?} \
                          sup: {:?}",