use rustc_middle::ty::subst::{GenericArgKind, SubstsRef, UserSubsts};
use rustc_middle::ty::{
self, CanonicalUserTypeAnnotation, CanonicalUserTypeAnnotations, OpaqueTypeKey, RegionVid,
- ToPredicate, Ty, TyCtxt, UserType, UserTypeAnnotationIndex, WithConstness,
+ ToPredicate, Ty, TyCtxt, UserType, UserTypeAnnotationIndex,
};
use rustc_span::def_id::CRATE_DEF_ID;
use rustc_span::{Span, DUMMY_SP};
crate type_tests: Vec<TypeTest<'tcx>>,
}
-impl MirTypeckRegionConstraints<'tcx> {
+impl<'tcx> MirTypeckRegionConstraints<'tcx> {
fn placeholder_region(
&mut self,
infcx: &InferCtxt<'_, 'tcx>,