[INFO] fetching crate icentral-subgraph 0.1.0...
[INFO] checking icentral-subgraph-0.1.0 against try#84addd32a13fa2d3f62fe5d99031611147b7fb13 for pr-147565
[INFO] extracting crate icentral-subgraph 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate icentral-subgraph 0.1.0
[INFO] finished tweaking crates.io crate icentral-subgraph 0.1.0
[INFO] tweaked toml for crates.io crate icentral-subgraph 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate icentral-subgraph 0.1.0 on toolchain 84addd32a13fa2d3f62fe5d99031611147b7fb13
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+84addd32a13fa2d3f62fe5d99031611147b7fb13" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate icentral-subgraph 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+84addd32a13fa2d3f62fe5d99031611147b7fb13" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+84addd32a13fa2d3f62fe5d99031611147b7fb13" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 870b2dd98cd45701812cf84364c80db0f60be5215f4bc4b5956a63f772ee5eb5
[INFO] running `Command { std: "docker" "start" "-a" "870b2dd98cd45701812cf84364c80db0f60be5215f4bc4b5956a63f772ee5eb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "870b2dd98cd45701812cf84364c80db0f60be5215f4bc4b5956a63f772ee5eb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "870b2dd98cd45701812cf84364c80db0f60be5215f4bc4b5956a63f772ee5eb5", kill_on_drop: false }`
[INFO] [stdout] 870b2dd98cd45701812cf84364c80db0f60be5215f4bc4b5956a63f772ee5eb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+84addd32a13fa2d3f62fe5d99031611147b7fb13" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3286cf55cf815c276fa09040dde9b8556b98807f2f4966dcdbef9b3f385c2cb
[INFO] running `Command { std: "docker" "start" "-a" "e3286cf55cf815c276fa09040dde9b8556b98807f2f4966dcdbef9b3f385c2cb", kill_on_drop: false }`
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[INFO] [stderr]     Checking icentral-path-counts v0.1.0
[INFO] [stderr]     Checking icentral-conn-vertex-map v0.1.0
[INFO] [stderr]     Checking icentral-sigmas v0.1.0
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[INFO] [stderr]     Checking icentral-subgraph v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/subgraph.rs:508:40
[INFO] [stdout]     |
[INFO] [stdout] 508 |             let v_n: NodeId = stack[i];;
[INFO] [stdout]     |                                        ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/subgraph.rs:508:40
[INFO] [stdout]     |
[INFO] [stdout] 508 |             let v_n: NodeId = stack[i];;
[INFO] [stdout]     |                                        ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_nodes`
[INFO] [stdout]    --> src/create.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |         let num_nodes = g.num_nodes();
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_nodes`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/insert_edge.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut e1 = Edge::new(src,dst);
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/insert_edge.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut e2 = e1.reversed();
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e2`
[INFO] [stdout]   --> src/insert_edge.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut e2 = e1.reversed();
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_e2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/subgraph.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |         s:     NodeId, 
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]    --> src/subgraph.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 170 |         stack: &mut Stack<NodeId>, 
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/subgraph.rs:171:9
[INFO] [stdout]     |
[INFO] [stdout] 171 |         src:   NodeId, 
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst`
[INFO] [stdout]    --> src/subgraph.rs:172:9
[INFO] [stdout]     |
[INFO] [stdout] 172 |         dst:   NodeId)
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]    --> src/subgraph.rs:462:9
[INFO] [stdout]     |
[INFO] [stdout] 462 |         stack:               &Vec<NodeId>,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]    --> src/subgraph.rs:527:9
[INFO] [stdout]     |
[INFO] [stdout] 527 |         stack:               &Vec<NodeId>,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src_distance`
[INFO] [stdout]    --> src/subgraph.rs:613:9
[INFO] [stdout]     |
[INFO] [stdout] 613 |         src_distance:        f64,
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_src_distance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst_distance`
[INFO] [stdout]    --> src/subgraph.rs:614:9
[INFO] [stdout]     |
[INFO] [stdout] 614 |         dst_distance:        f64,
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dst_distance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/update_sigmas.rs:42:17
[INFO] [stdout]    |
[INFO] [stdout] 42 |             let mut vg_s: i32 = subgraph_map.subgraph_for_node(source).num_nodes().try_into()?;
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/update_sigmas.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |             let mut vg_n: i32 = subgraph_map.subgraph_for_node(v_n).num_nodes().try_into()?;
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/update_sigmas.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |             let mut vg_s: i32 = subgraph_map.subgraph_for_node(source).num_nodes().try_into()?;
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/update_sigmas.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |             let mut vg_n: i32 = subgraph_map.subgraph_for_node(v_n).num_nodes().try_into()?;
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_nodes`
[INFO] [stdout]    --> src/create.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |         let num_nodes = g.num_nodes();
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_nodes`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/insert_edge.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut e1 = Edge::new(src,dst);
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/insert_edge.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut e2 = e1.reversed();
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e2`
[INFO] [stdout]   --> src/insert_edge.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut e2 = e1.reversed();
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_e2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/get_connected_component_sizes.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 | /             self.do_bfs_from_source_count_vertices_and_mark_visited(
[INFO] [stdout] 27 | |                 node, 
[INFO] [stdout] 28 | |                 &mut visit_markers, 
[INFO] [stdout] 29 | |                 &mut out_vec
[INFO] [stdout] 30 | |             );
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 26 |             let _ = self.do_bfs_from_source_count_vertices_and_mark_visited(
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/subgraph.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     delegate_to_neighbors_map!{}
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let _ = delegate_to_neighbors_map!{}
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/subgraph.rs:467:9
[INFO] [stdout]     |
[INFO] [stdout] 467 | /         self.maybe_update_all_sigmas(
[INFO] [stdout] 468 | |             v_n,
[INFO] [stdout] 469 | |             source,
[INFO] [stdout] 470 | |             tmp_subgraph_map,
[INFO] [stdout] 471 | |             tmp_conn_vertex_map
[INFO] [stdout] 472 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 467 |         let _ = self.maybe_update_all_sigmas(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/subgraph.rs:577:13
[INFO] [stdout]     |
[INFO] [stdout] 577 | /             self.rbfs2_to_add_the_new_pair_dependencies_step(
[INFO] [stdout] 578 | |                 v_n, 
[INFO] [stdout] 579 | |                 source, 
[INFO] [stdout] 580 | |                 stack, 
[INFO] [stdout] ...   |
[INFO] [stdout] 583 | |                 scores
[INFO] [stdout] 584 | |             );
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 577 |             let _ = self.rbfs2_to_add_the_new_pair_dependencies_step(
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/subgraph.rs:631:9
[INFO] [stdout]     |
[INFO] [stdout] 631 | /         self.rbfs1_to_add_the_new_pair_dependencies(
[INFO] [stdout] 632 | |             source,
[INFO] [stdout] 633 | |             &stack,
[INFO] [stdout] 634 | |             tmp_subgraph_map,
[INFO] [stdout] 635 | |             tmp_conn_vertex_map,
[INFO] [stdout] 636 | |             scores,
[INFO] [stdout] 637 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 631 |         let _ = self.rbfs1_to_add_the_new_pair_dependencies(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/subgraph.rs:641:9
[INFO] [stdout]     |
[INFO] [stdout] 641 |         self.iteration2_update2();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 641 |         let _ = self.iteration2_update2();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/subgraph.rs:739:13
[INFO] [stdout]     |
[INFO] [stdout] 739 |             self.iteration2_step3_process_neighbor(v,nbr);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 739 |             let _ = self.iteration2_step3_process_neighbor(v,nbr);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/subgraph.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |         s:     NodeId, 
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]    --> src/subgraph.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 170 |         stack: &mut Stack<NodeId>, 
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/subgraph.rs:171:9
[INFO] [stdout]     |
[INFO] [stdout] 171 |         src:   NodeId, 
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst`
[INFO] [stdout]    --> src/subgraph.rs:172:9
[INFO] [stdout]     |
[INFO] [stdout] 172 |         dst:   NodeId)
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]    --> src/subgraph.rs:462:9
[INFO] [stdout]     |
[INFO] [stdout] 462 |         stack:               &Vec<NodeId>,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]    --> src/subgraph.rs:527:9
[INFO] [stdout]     |
[INFO] [stdout] 527 |         stack:               &Vec<NodeId>,
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src_distance`
[INFO] [stdout]    --> src/subgraph.rs:613:9
[INFO] [stdout]     |
[INFO] [stdout] 613 |         src_distance:        f64,
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_src_distance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst_distance`
[INFO] [stdout]    --> src/subgraph.rs:614:9
[INFO] [stdout]     |
[INFO] [stdout] 614 |         dst_distance:        f64,
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dst_distance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/update_sigmas.rs:42:17
[INFO] [stdout]    |
[INFO] [stdout] 42 |             let mut vg_s: i32 = subgraph_map.subgraph_for_node(source).num_nodes().try_into()?;
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/update_sigmas.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |             let mut vg_n: i32 = subgraph_map.subgraph_for_node(v_n).num_nodes().try_into()?;
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/update_sigmas.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |             let mut vg_s: i32 = subgraph_map.subgraph_for_node(source).num_nodes().try_into()?;
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/update_sigmas.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |             let mut vg_n: i32 = subgraph_map.subgraph_for_node(v_n).num_nodes().try_into()?;
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/get_connected_component_sizes.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 | /             self.do_bfs_from_source_count_vertices_and_mark_visited(
[INFO] [stdout] 27 | |                 node, 
[INFO] [stdout] 28 | |                 &mut visit_markers, 
[INFO] [stdout] 29 | |                 &mut out_vec
[INFO] [stdout] 30 | |             );
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 26 |             let _ = self.do_bfs_from_source_count_vertices_and_mark_visited(
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/subgraph.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     delegate_to_neighbors_map!{}
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let _ = delegate_to_neighbors_map!{}
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/subgraph.rs:467:9
[INFO] [stdout]     |
[INFO] [stdout] 467 | /         self.maybe_update_all_sigmas(
[INFO] [stdout] 468 | |             v_n,
[INFO] [stdout] 469 | |             source,
[INFO] [stdout] 470 | |             tmp_subgraph_map,
[INFO] [stdout] 471 | |             tmp_conn_vertex_map
[INFO] [stdout] 472 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 467 |         let _ = self.maybe_update_all_sigmas(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/subgraph.rs:577:13
[INFO] [stdout]     |
[INFO] [stdout] 577 | /             self.rbfs2_to_add_the_new_pair_dependencies_step(
[INFO] [stdout] 578 | |                 v_n, 
[INFO] [stdout] 579 | |                 source, 
[INFO] [stdout] 580 | |                 stack, 
[INFO] [stdout] ...   |
[INFO] [stdout] 583 | |                 scores
[INFO] [stdout] 584 | |             );
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 577 |             let _ = self.rbfs2_to_add_the_new_pair_dependencies_step(
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/subgraph.rs:631:9
[INFO] [stdout]     |
[INFO] [stdout] 631 | /         self.rbfs1_to_add_the_new_pair_dependencies(
[INFO] [stdout] 632 | |             source,
[INFO] [stdout] 633 | |             &stack,
[INFO] [stdout] 634 | |             tmp_subgraph_map,
[INFO] [stdout] 635 | |             tmp_conn_vertex_map,
[INFO] [stdout] 636 | |             scores,
[INFO] [stdout] 637 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 631 |         let _ = self.rbfs1_to_add_the_new_pair_dependencies(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/subgraph.rs:641:9
[INFO] [stdout]     |
[INFO] [stdout] 641 |         self.iteration2_update2();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 641 |         let _ = self.iteration2_update2();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/subgraph.rs:739:13
[INFO] [stdout]     |
[INFO] [stdout] 739 |             self.iteration2_step3_process_neighbor(v,nbr);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 739 |             let _ = self.iteration2_step3_process_neighbor(v,nbr);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 41.92s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: icentral-neighbors v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "e3286cf55cf815c276fa09040dde9b8556b98807f2f4966dcdbef9b3f385c2cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3286cf55cf815c276fa09040dde9b8556b98807f2f4966dcdbef9b3f385c2cb", kill_on_drop: false }`
[INFO] [stdout] e3286cf55cf815c276fa09040dde9b8556b98807f2f4966dcdbef9b3f385c2cb
