Rustup to rust-lang/rust#60966

Author: flip1995

clippy_lints/src/methods/mod.rs

@@ -15,7 +15,7 @@ use rustc::{declare_lint_pass, declare_tool_lint};
 use rustc_errors::Applicability;
 use syntax::ast;
 use syntax::source_map::Span;
-use syntax::symbol::LocalInternedString;
+use syntax::symbol::{sym, LocalInternedString};
 
 use crate::utils::sugg;
 use crate::utils::usage::mutated_variables;
@@ -2682,7 +2682,7 @@ fn get_error_type<'a>(cx: &LateContext<'_, '_>, ty: Ty<'a>) -> Option<Ty<'a>> {
 
 /// This checks whether a given type is known to implement Debug.
 fn has_debug_impl<'a, 'b>(ty: Ty<'a>, cx: &LateContext<'b, 'a>) -> bool {
-    match cx.tcx.lang_items().debug_trait() {
+    match cx.tcx.get_diagnostic_item(sym::debug_trait) {
         Some(debug) => implements_trait(cx, ty, debug, &[]),
         None => false,
     }