) -> RelateResult<'tcx, ty::Region<'tcx>> {
debug!("{}.regions({:?}, {:?})", self.tag(), a, b);
- let origin = Subtype(box self.fields.trace.clone());
+ let origin = Subtype(Box::new(self.fields.trace.clone()));
Ok(self.fields.infcx.inner.borrow_mut().unwrap_region_constraints().lub_regions(
self.tcx(),
origin,