};
use if_chain::if_chain;
use matches::matches;
-use rustc::lint::{LateContext, LateLintPass};
use rustc::ty;
use rustc_errors::Applicability;
use rustc_hir::*;
+use rustc_lint::{LateContext, LateLintPass};
use rustc_session::{declare_lint_pass, declare_tool_lint};
use rustc_span::Symbol;