18     let x: u64 = Arbitrary::arbitrary(g);  in random_01()
38     fn arbitrary<G: Gen>(g: &mut G) -> Self {  in arbitrary()  function
39         let nodes = usize::arbitrary(g);  in arbitrary()
48             gr.add_node(N::arbitrary(g));  in arbitrary()
57                     gr.add_edge(i, j, E::arbitrary(g));  in arbitrary()
106     fn arbitrary<G: Gen>(g: &mut G) -> Self {  in arbitrary()  function
107         let nodes = usize::arbitrary(g);  in arbitrary()
116             gr.add_node(N::arbitrary(g));  in arbitrary()
127                     gr.add_edge(i, j, E::arbitrary(g));  in arbitrary()
131         if bool::arbitrary(g) {  in arbitrary()
133             let n = u8::arbitrary(g) % (gr.node_count() as u8);  in arbitrary()
135                 let ni = node_index(usize::arbitrary(g) % gr.node_bound());  in arbitrary()
185     fn arbitrary<G: Gen>(g: &mut G) -> Self {  in arbitrary()  function
186         let nodes = usize::arbitrary(g);  in arbitrary()
190         let mut nodes = (0..nodes).map(|_| N::arbitrary(g)).collect::<Vec<_>>();  in arbitrary()
210                     gr.add_edge(i, j, E::arbitrary(g));  in arbitrary()