use crate::utils::span_lint;
+use rustc::declare_lint_pass;
use rustc::hir::{Expr, ExprKind};
use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
use rustc::ty;
-use rustc::{declare_lint_pass, declare_tool_lint};
+use rustc_session::declare_tool_lint;
declare_clippy_lint! {
/// **What it does:** Checks for needlessly including a base struct on update