Rollup merge of #99746 - compiler-errors:more-trait-engine, r=jackh726

Use `TraitEngine` in more places that don't specifically need `FulfillmentContext::new_in_snapshot`

Not sure if this change is worthwhile, but couldn't hurt re: chalkification

r? types

1 files changed, 2 insertions, 2 deletions

diff --git a/compiler/rustc_const_eval/src/transform/check_consts/qualifs.rs b/compiler/rustc_const_eval/src/transform/check_consts/qualifs.rs
index e0994451172..c8a63c9c3f8 100644
--- a/compiler/rustc_const_eval/src/transform/check_consts/qualifs.rs
+++ b/compiler/rustc_const_eval/src/transform/check_consts/qualifs.rs
@@ -10,7 +10,7 @@ use rustc_middle::mir::*;
 use rustc_middle::ty::{self, subst::SubstsRef, AdtDef, Ty};
 use rustc_span::DUMMY_SP;
 use rustc_trait_selection::traits::{
-    self, FulfillmentContext, ImplSource, Obligation, ObligationCause, SelectionContext,
+    self, ImplSource, Obligation, ObligationCause, SelectionContext, TraitEngineExt,
 };
 
 use super::ConstCx;
@@ -191,7 +191,7 @@ impl Qualif for NeedsNonConstDrop {
 
             // If we successfully found one, then select all of the predicates
             // implied by our const drop impl.
-            let mut fcx = FulfillmentContext::new();
+            let mut fcx = <dyn TraitEngine<'tcx>>::new(cx.tcx);
             for nested in impl_src.nested_obligations() {
                 fcx.register_predicate_obligation(&infcx, nested);
             }