use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
use rustc::ty::layout::LayoutOf;
use rustc::ty::{self, Ty};
use rustc::util::nodemap::HirIdSet;
use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
use rustc::ty::layout::LayoutOf;
use rustc::ty::{self, Ty};
use rustc::util::nodemap::HirIdSet;