fn filter_nodes<'q>(
query: &'q DepGraphQuery,
sources: &Option<FxIndexSet<&'q DepNode>>,
targets: &Option<FxIndexSet<&'q DepNode>>,
) -> FxIndexSet<DepKind>
fn filter_nodes<'q>(
query: &'q DepGraphQuery,
sources: &Option<FxIndexSet<&'q DepNode>>,
targets: &Option<FxIndexSet<&'q DepNode>>,
) -> FxIndexSet<DepKind>