Update clippy for latest rustc changes

Specifically, this revises the clippy integration to utilize a new
callback to register its lints, as the prior editing of lint store in
Session is no longer possible.

clippy_lints/src/trivially_copy_pass_by_ref.rs

@@ -54,6 +54,7 @@ declare_clippy_lint! {
     "functions taking small copyable arguments by reference"
 }
 
+#[derive(Copy, Clone)]
 pub struct TriviallyCopyPassByRef {
     limit: u64,
 }
@@ -159,7 +160,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for TriviallyCopyPassByRef {
                         return;
                     }
                 }
-            },
+            }
             FnKind::Method(..) => (),
             _ => return,
         }