Function rustc_hir_typeck::cast::make_invalid_casting_error

fn make_invalid_casting_error<'a, 'tcx>(
    span: Span,
    expr_ty: Ty<'tcx>,
    cast_ty: Ty<'tcx>,
    fcx: &FnCtxt<'a, 'tcx>
) -> Diag<'a>