use crate::traits::*;
use rustc::mir;
-use rustc::session::config::DebugInfo;
use rustc::ty;
use rustc::ty::layout::{LayoutOf, Size};
use rustc_hir::def_id::CrateNum;
use rustc_index::vec::IndexVec;
+use rustc_session::config::DebugInfo;
use rustc_span::symbol::{kw, Symbol};
use rustc_span::{BytePos, Span};