Rewrite shadow lint

Author: camsteffen

clippy_lints/src/lib.rs

@@ -4,6 +4,7 @@
 #![feature(drain_filter)]
 #![feature(in_band_lifetimes)]
 #![feature(iter_zip)]
+#![feature(iter_map_while)]
 #![feature(once_cell)]
 #![feature(rustc_private)]
 #![feature(stmt_expr_attributes)]
@@ -1931,7 +1932,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
     store.register_late_pass(|| Box::new(same_name_method::SameNameMethod));
     store.register_late_pass(|| Box::new(map_clone::MapClone));
     store.register_late_pass(|| Box::new(map_err_ignore::MapErrIgnore));
-    store.register_late_pass(|| Box::new(shadow::Shadow));
+    store.register_late_pass(|| Box::new(shadow::Shadow::default()));
     store.register_late_pass(|| Box::new(unit_types::UnitTypes));
     store.register_late_pass(|| Box::new(loops::Loops));
     store.register_late_pass(|| Box::new(main_recursion::MainRecursion::default()));