use rustc::hir::map as hir_map;
use rustc::session::CrateDisambiguator;
-use rustc::traits::{self};
use rustc::ty::subst::Subst;
use rustc::ty::{self, ToPredicate, Ty, TyCtxt, WithConstness};
use rustc_data_structures::svh::Svh;
use rustc_hir as hir;
use rustc_hir::def_id::{CrateNum, DefId, LOCAL_CRATE};
+use rustc_infer::traits;
use rustc_span::symbol::Symbol;
use rustc_span::Span;