Don't ICE when encountering bound regions in generator interior type

compiler/rustc_trait_selection/src/solve/assembly/structural_traits.rs

@@ -97,7 +97,6 @@ pub(in crate::solve) fn replace_erased_lifetimes_with_bound_vars<'tcx>(
     tcx: TyCtxt<'tcx>,
     ty: Ty<'tcx>,
 ) -> ty::Binder<'tcx, Ty<'tcx>> {
-    debug_assert!(!ty.has_bound_regions());
     let mut counter = 0;
     let ty = tcx.fold_regions(ty, |r, current_depth| match r.kind() {
         ty::ReErased => {

tests/ui/async-await/send-bound-async-closure.rs

@@ -1,5 +1,8 @@
 //@ edition: 2021
 //@ check-pass
+//@ revisions: current next
+//@ ignore-compare-mode-next-solver (explicit revisions)
+//@[next] compile-flags: -Znext-solver
 
 // This test verifies that we do not create a query cycle when typechecking has several inference
 // variables that point to the same coroutine interior type.