parent_def_id -> parent

Author: flip1995

clippy_lints/src/use_self.rs

@@ -5,6 +5,7 @@ use rustc::hir::*;
 use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintContext, LintPass};
 use rustc::ty;
 use rustc::{declare_tool_lint, lint_array};
+use rustc::ty::DefIdTree;
 use rustc_errors::Applicability;
 use syntax_pos::symbol::keywords::SelfUpper;
 
@@ -233,7 +234,7 @@ impl<'a, 'tcx> Visitor<'tcx> for UseSelfVisitor<'a, 'tcx> {
             if self.item_path.def == path.def {
                 span_use_self_lint(self.cx, path);
             } else if let Def::StructCtor(ctor_did, CtorKind::Fn) = path.def {
-                if self.item_path.def.opt_def_id() == self.cx.tcx.parent_def_id(ctor_did) {
+                if self.item_path.def.opt_def_id() == self.cx.tcx.parent(ctor_did) {
                     span_use_self_lint(self.cx, path);
                 }
             }