-use crate::ich::StableHashingContext;
use crate::ty::{self, Ty, TyCtxt};
use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
use rustc_hir::def_id::DefId;
+use rustc_query_system::ich::StableHashingContext;
use std::fmt::Debug;
use std::hash::Hash;
use std::mem;