-use rustc::hir;
-use rustc::lint::*;
-use rustc::ty;
-use rustc_errors::{Applicability};
-use syntax::codemap::Span;
-use crate::utils::{in_macro, iter_input_pats, match_type, method_chain_args, snippet, span_lint_and_then};
+// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use crate::rustc::hir;
+use crate::rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use crate::rustc::ty;
+use crate::rustc::{declare_tool_lint, lint_array};
+use crate::rustc_errors::Applicability;
+use crate::syntax::source_map::Span;