[INFO] fetching crate icentral-delta 0.1.0...
[INFO] checking icentral-delta-0.1.0 against master#f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b for pr-148329
[INFO] extracting crate icentral-delta 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate icentral-delta 0.1.0
[INFO] finished tweaking crates.io crate icentral-delta 0.1.0
[INFO] tweaked toml for crates.io crate icentral-delta 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate icentral-delta 0.1.0 on toolchain f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate icentral-delta 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" "+f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded icentral-rbfs v0.1.0
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[INFO] [stderr]   Downloaded icentral-scores v0.1.0
[INFO] [stderr]   Downloaded icentral-subgraph-map v0.1.0
[INFO] [stderr]   Downloaded icentral-deltas v0.1.0
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[INFO] [stderr]   Downloaded icentral-articulation-point-map v0.1.0
[INFO] [stderr]   Downloaded icentral-sigmas v0.1.0
[INFO] [stderr]   Downloaded icentral-bbfs v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4299d8e1fdd5e67a9b7cd385a546647f154d0979c1ff45a68bb192daf22c6a27
[INFO] running `Command { std: "docker" "start" "-a" "4299d8e1fdd5e67a9b7cd385a546647f154d0979c1ff45a68bb192daf22c6a27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4299d8e1fdd5e67a9b7cd385a546647f154d0979c1ff45a68bb192daf22c6a27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4299d8e1fdd5e67a9b7cd385a546647f154d0979c1ff45a68bb192daf22c6a27", kill_on_drop: false }`
[INFO] [stdout] 4299d8e1fdd5e67a9b7cd385a546647f154d0979c1ff45a68bb192daf22c6a27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 871d918ca7ce334b3d6b5069e08470e12d5d0c3e6fe90c67ca73174b25ca40ca
[INFO] running `Command { std: "docker" "start" "-a" "871d918ca7ce334b3d6b5069e08470e12d5d0c3e6fe90c67ca73174b25ca40ca", kill_on_drop: false }`
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[INFO] [stderr]     Checking icentral-delta v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/delta.rs:896:40
[INFO] [stdout]     |
[INFO] [stdout] 896 |             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/delta.rs:896:40
[INFO] [stdout]     |
[INFO] [stdout] 896 |             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: `tot_arr`
[INFO] [stdout]    --> src/delta.rs:391:9
[INFO] [stdout]     |
[INFO] [stdout] 391 |         tot_arr:   &mut Vec<Duration>)
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tot_arr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scores`
[INFO] [stdout]    --> src/delta.rs:858:9
[INFO] [stdout]     |
[INFO] [stdout] 858 |         scores: &mut BetweennessScores)
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_scores`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scores`
[INFO] [stdout]     --> src/delta.rs:1025:9
[INFO] [stdout]      |
[INFO] [stdout] 1025 |         scores: &mut BetweennessScores)
[INFO] [stdout]      |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_scores`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v_s`
[INFO] [stdout]     --> src/delta.rs:1157:9
[INFO] [stdout]      |
[INFO] [stdout] 1157 |         v_s:          &Vec<NodeId>,
[INFO] [stdout]      |         ^^^ help: if this is intentional, prefix it with an underscore: `_v_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]     --> src/delta.rs:1159:9
[INFO] [stdout]      |
[INFO] [stdout] 1159 |         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/delta.rs:1160:9
[INFO] [stdout]      |
[INFO] [stdout] 1160 |         dst:          NodeId,
[INFO] [stdout]      |         ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src_distance`
[INFO] [stdout]     --> src/delta.rs:1161:9
[INFO] [stdout]      |
[INFO] [stdout] 1161 |         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/delta.rs:1162:9
[INFO] [stdout]      |
[INFO] [stdout] 1162 |         dst_distance: f64,
[INFO] [stdout]      |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dst_distance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tot_arr`
[INFO] [stdout]    --> src/delta.rs:391:9
[INFO] [stdout]     |
[INFO] [stdout] 391 |         tot_arr:   &mut Vec<Duration>)
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tot_arr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/delta.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 87 |     delegate_to_graphhash!{bcc_subgraph}
[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] 87 |     let _ = delegate_to_graphhash!{bcc_subgraph}
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         self.bcc_subgraph.remove_edge(&Edge::new(src,dst));
[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] 123 |         let _ = self.bcc_subgraph.remove_edge(&Edge::new(src,dst));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:172:9
[INFO] [stdout]     |
[INFO] [stdout] 172 | /         self.bcc_subgraph.insert_edge(
[INFO] [stdout] 173 | |             &Edge::new(src,dst)
[INFO] [stdout] 174 | |         );
[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] 172 |         let _ = self.bcc_subgraph.insert_edge(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:268:9
[INFO] [stdout]     |
[INFO] [stdout] 268 |         self.bcc_fast_subgraph.remove_edge_between_nodes(src, dst);
[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] 268 |         let _ = self.bcc_fast_subgraph.remove_edge_between_nodes(src, dst);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:295:9
[INFO] [stdout]     |
[INFO] [stdout] 295 |         self.bcc_fast_subgraph.insert_edge_between_nodes(src, dst);
[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] 295 |         let _ = self.bcc_fast_subgraph.insert_edge_between_nodes(src, dst);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:434:9
[INFO] [stdout]     |
[INFO] [stdout] 434 |         self.bcc_fast_subgraph.remove_edge_between_nodes(src, dst);
[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] 434 |         let _ = self.bcc_fast_subgraph.remove_edge_between_nodes(src, dst);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:490:9
[INFO] [stdout]     |
[INFO] [stdout] 490 |         self.bcc_fast_subgraph.insert_edge_between_nodes(src, dst);
[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] 490 |         let _ = self.bcc_fast_subgraph.insert_edge_between_nodes(src, dst);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:517:17
[INFO] [stdout]     |
[INFO] [stdout] 517 | /                 self.iteration_1(
[INFO] [stdout] 518 | |                     source, 
[INFO] [stdout] 519 | |                     src,
[INFO] [stdout] 520 | |                     dst,
[INFO] [stdout] 521 | |                     scores
[INFO] [stdout] 522 | |                 );
[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] 517 |                 let _ = self.iteration_1(
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:530:17
[INFO] [stdout]     |
[INFO] [stdout] 530 | /                 self.iteration_2(
[INFO] [stdout] 531 | |                     source, 
[INFO] [stdout] 532 | |                     src,
[INFO] [stdout] 533 | |                     dst,
[INFO] [stdout] 534 | |                     scores
[INFO] [stdout] 535 | |                 );
[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] 530 |                 let _ = self.iteration_2(
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:789:13
[INFO] [stdout]     |
[INFO] [stdout] 789 |             self.maybe_update_all_sigmas(source,v_n);
[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] 789 |             let _ = self.maybe_update_all_sigmas(source,v_n);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]     --> src/delta.rs:1090:13
[INFO] [stdout]      |
[INFO] [stdout] 1090 |             self.maybe_update_all_sigmas2(source, v_n);
[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] 1090 |             let _ = self.maybe_update_all_sigmas2(source, v_n);
[INFO] [stdout]      |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]     --> src/delta.rs:1311:9
[INFO] [stdout]      |
[INFO] [stdout] 1311 |         self.bcc_subgraph_remove_edge(&Edge::new(src, dst));
[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] 1311 |         let _ = self.bcc_subgraph_remove_edge(&Edge::new(src, dst));
[INFO] [stdout]      |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scores`
[INFO] [stdout]    --> src/delta.rs:858:9
[INFO] [stdout]     |
[INFO] [stdout] 858 |         scores: &mut BetweennessScores)
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_scores`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scores`
[INFO] [stdout]     --> src/delta.rs:1025:9
[INFO] [stdout]      |
[INFO] [stdout] 1025 |         scores: &mut BetweennessScores)
[INFO] [stdout]      |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_scores`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v_s`
[INFO] [stdout]     --> src/delta.rs:1157:9
[INFO] [stdout]      |
[INFO] [stdout] 1157 |         v_s:          &Vec<NodeId>,
[INFO] [stdout]      |         ^^^ help: if this is intentional, prefix it with an underscore: `_v_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]     --> src/delta.rs:1159:9
[INFO] [stdout]      |
[INFO] [stdout] 1159 |         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/delta.rs:1160:9
[INFO] [stdout]      |
[INFO] [stdout] 1160 |         dst:          NodeId,
[INFO] [stdout]      |         ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src_distance`
[INFO] [stdout]     --> src/delta.rs:1161:9
[INFO] [stdout]      |
[INFO] [stdout] 1161 |         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/delta.rs:1162:9
[INFO] [stdout]      |
[INFO] [stdout] 1162 |         dst_distance: f64,
[INFO] [stdout]      |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dst_distance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/delta.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 87 |     delegate_to_graphhash!{bcc_subgraph}
[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] 87 |     let _ = delegate_to_graphhash!{bcc_subgraph}
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         self.bcc_subgraph.remove_edge(&Edge::new(src,dst));
[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] 123 |         let _ = self.bcc_subgraph.remove_edge(&Edge::new(src,dst));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:172:9
[INFO] [stdout]     |
[INFO] [stdout] 172 | /         self.bcc_subgraph.insert_edge(
[INFO] [stdout] 173 | |             &Edge::new(src,dst)
[INFO] [stdout] 174 | |         );
[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] 172 |         let _ = self.bcc_subgraph.insert_edge(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:268:9
[INFO] [stdout]     |
[INFO] [stdout] 268 |         self.bcc_fast_subgraph.remove_edge_between_nodes(src, dst);
[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] 268 |         let _ = self.bcc_fast_subgraph.remove_edge_between_nodes(src, dst);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:295:9
[INFO] [stdout]     |
[INFO] [stdout] 295 |         self.bcc_fast_subgraph.insert_edge_between_nodes(src, dst);
[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] 295 |         let _ = self.bcc_fast_subgraph.insert_edge_between_nodes(src, dst);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:434:9
[INFO] [stdout]     |
[INFO] [stdout] 434 |         self.bcc_fast_subgraph.remove_edge_between_nodes(src, dst);
[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] 434 |         let _ = self.bcc_fast_subgraph.remove_edge_between_nodes(src, dst);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:490:9
[INFO] [stdout]     |
[INFO] [stdout] 490 |         self.bcc_fast_subgraph.insert_edge_between_nodes(src, dst);
[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] 490 |         let _ = self.bcc_fast_subgraph.insert_edge_between_nodes(src, dst);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:517:17
[INFO] [stdout]     |
[INFO] [stdout] 517 | /                 self.iteration_1(
[INFO] [stdout] 518 | |                     source, 
[INFO] [stdout] 519 | |                     src,
[INFO] [stdout] 520 | |                     dst,
[INFO] [stdout] 521 | |                     scores
[INFO] [stdout] 522 | |                 );
[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] 517 |                 let _ = self.iteration_1(
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:530:17
[INFO] [stdout]     |
[INFO] [stdout] 530 | /                 self.iteration_2(
[INFO] [stdout] 531 | |                     source, 
[INFO] [stdout] 532 | |                     src,
[INFO] [stdout] 533 | |                     dst,
[INFO] [stdout] 534 | |                     scores
[INFO] [stdout] 535 | |                 );
[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] 530 |                 let _ = self.iteration_2(
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/delta.rs:789:13
[INFO] [stdout]     |
[INFO] [stdout] 789 |             self.maybe_update_all_sigmas(source,v_n);
[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] 789 |             let _ = self.maybe_update_all_sigmas(source,v_n);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]     --> src/delta.rs:1090:13
[INFO] [stdout]      |
[INFO] [stdout] 1090 |             self.maybe_update_all_sigmas2(source, v_n);
[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] 1090 |             let _ = self.maybe_update_all_sigmas2(source, v_n);
[INFO] [stdout]      |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]     --> src/delta.rs:1311:9
[INFO] [stdout]      |
[INFO] [stdout] 1311 |         self.bcc_subgraph_remove_edge(&Edge::new(src, dst));
[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] 1311 |         let _ = self.bcc_subgraph_remove_edge(&Edge::new(src, dst));
[INFO] [stdout]      |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 01s
[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 4`
[INFO] running `Command { std: "docker" "inspect" "871d918ca7ce334b3d6b5069e08470e12d5d0c3e6fe90c67ca73174b25ca40ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "871d918ca7ce334b3d6b5069e08470e12d5d0c3e6fe90c67ca73174b25ca40ca", kill_on_drop: false }`
[INFO] [stdout] 871d918ca7ce334b3d6b5069e08470e12d5d0c3e6fe90c67ca73174b25ca40ca
