use rustc::ty::{self, Ty, TyCtxt};
use rustc::mir::*;
use rustc::mir::visit::{MutVisitor, TyContext};
-use rustc::mir::transform::MirSource;
-use transform::MirPass;
+use transform::{MirPass, MirSource};
struct EraseRegionsVisitor<'a, 'tcx: 'a> {
tcx: TyCtxt<'a, 'tcx, 'tcx>,