Ok(val) => collect_const(tcx, val, instance.substs, output),
Err(ErrorHandled::Reported) => {},
Err(ErrorHandled::TooGeneric) => span_bug!(
Ok(val) => collect_const(tcx, val, instance.substs, output),
Err(ErrorHandled::Reported) => {},
Err(ErrorHandled::TooGeneric) => span_bug!(