use crate::consts::{constant_simple, Constant};
use crate::utils::{match_def_path, paths, span_lint};
-use rustc::lint::{LateContext, LateLintPass};
-use rustc_hir::*;
+use rustc_hir::{Expr, ExprKind};
+use rustc_lint::{LateContext, LateLintPass};
use rustc_session::{declare_lint_pass, declare_tool_lint};
use std::cmp::Ordering;