1 files changed, 12 insertions, 2 deletions
diff --git a/compiler/rustc_trait_selection/src/traits/query/type_op/subtype.rs b/compiler/rustc_trait_selection/src/traits/query/type_op/subtype.rs
index c51292eba..10976d5cd 100644
--- a/compiler/rustc_trait_selection/src/traits/query/type_op/subtype.rs
+++ b/compiler/rustc_trait_selection/src/traits/query/type_op/subtype.rs
@@ -1,5 +1,7 @@
 use crate::infer::canonical::{Canonical, CanonicalQueryResponse};
-use crate::traits::query::Fallible;
+use crate::traits::ObligationCtxt;
+use rustc_middle::traits::query::NoSolution;
+use rustc_middle::traits::ObligationCause;
 use rustc_middle::ty::{ParamEnvAnd, TyCtxt};
 
 pub use rustc_middle::traits::query::type_op::Subtype;
@@ -14,7 +16,15 @@ impl<'tcx> super::QueryTypeOp<'tcx> for Subtype<'tcx> {
     fn perform_query(
         tcx: TyCtxt<'tcx>,
         canonicalized: Canonical<'tcx, ParamEnvAnd<'tcx, Self>>,
-    ) -> Fallible<CanonicalQueryResponse<'tcx, ()>> {
+    ) -> Result<CanonicalQueryResponse<'tcx, ()>, NoSolution> {
         tcx.type_op_subtype(canonicalized)
     }
+
+    fn perform_locally_in_new_solver(
+        ocx: &ObligationCtxt<'_, 'tcx>,
+        key: ParamEnvAnd<'tcx, Self>,
+    ) -> Result<Self::QueryResponse, NoSolution> {
+        ocx.sub(&ObligationCause::dummy(), key.param_env, key.value.sub, key.value.sup)?;
+        Ok(())
+    }
 }