[INFO] fetching crate icentral-muc 0.1.0...
[INFO] checking icentral-muc-0.1.0 against master#507271bc119683008ec719ecee48814e8ac86c65 for pr-146440
[INFO] extracting crate icentral-muc 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate icentral-muc 0.1.0
[INFO] finished tweaking crates.io crate icentral-muc 0.1.0
[INFO] tweaked toml for crates.io crate icentral-muc 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate icentral-muc 0.1.0 on toolchain 507271bc119683008ec719ecee48814e8ac86c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate icentral-muc 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" "+507271bc119683008ec719ecee48814e8ac86c65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded export-magic v0.3.6
[INFO] [stderr]   Downloaded renew-traits v0.1.0
[INFO] [stderr]   Downloaded icentral-visit-markers v0.1.0
[INFO] [stderr]   Downloaded named-item v0.1.0
[INFO] [stderr]   Downloaded language-enum v0.1.0
[INFO] [stderr]   Downloaded icentral-nodeid v0.1.0
[INFO] [stderr]   Downloaded traced-test v0.3.6
[INFO] [stderr]   Downloaded icentral-3p v0.1.0
[INFO] [stderr]   Downloaded tracing-setup v0.3.6
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[INFO] [stderr]   Downloaded icentral-sigmas v0.1.0
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[INFO] [stderr]   Downloaded roaring v0.10.6
[INFO] [stderr]   Downloaded icentral-mindexed-map v0.1.0
[INFO] [stderr]   Downloaded icentral-subgraph-map v0.1.0
[INFO] [stderr]   Downloaded icentral-mucid v0.1.0
[INFO] [stderr]   Downloaded icentral-errors v0.1.0
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[INFO] [stderr]   Downloaded icentral-distances v0.1.0
[INFO] [stderr]   Downloaded icentral-label-map v0.1.0
[INFO] [stderr]   Downloaded icentral-cycle v0.1.0
[INFO] [stderr]   Downloaded icentral-subgraph v0.1.0
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[INFO] [stderr]   Downloaded icentral-neighbors v0.1.0
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[INFO] [stderr]   Downloaded icentral-deltas v0.1.0
[INFO] [stderr]   Downloaded icentral-component v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e2d76986e5999352a9221dace85bc747910c4fee810cb7e7b83899dedcbf56d
[INFO] running `Command { std: "docker" "start" "-a" "7e2d76986e5999352a9221dace85bc747910c4fee810cb7e7b83899dedcbf56d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e2d76986e5999352a9221dace85bc747910c4fee810cb7e7b83899dedcbf56d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e2d76986e5999352a9221dace85bc747910c4fee810cb7e7b83899dedcbf56d", kill_on_drop: false }`
[INFO] [stdout] 7e2d76986e5999352a9221dace85bc747910c4fee810cb7e7b83899dedcbf56d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1e65c50d0658187418eb8138d447a304dd1db3bd333a79db01e003a2b633867
[INFO] running `Command { std: "docker" "start" "-a" "d1e65c50d0658187418eb8138d447a304dd1db3bd333a79db01e003a2b633867", kill_on_drop: false }`
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[INFO] [stderr]    Compiling delegate v0.10.0
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[INFO] [stderr]    Compiling rand_chacha v0.3.1
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[INFO] [stderr]     Checking icentral-color-map v0.1.0
[INFO] [stderr]     Checking icentral-visit-markers v0.1.0
[INFO] [stderr]     Checking icentral-sigmas v0.1.0
[INFO] [stderr]     Checking icentral-pair-dependencies v0.1.0
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[INFO] [stderr]     Checking icentral-conn-vertex-map v0.1.0
[INFO] [stderr]     Checking icentral-articulation-point-map v0.1.0
[INFO] [stderr]     Checking icentral-deltas v0.1.0
[INFO] [stderr]     Checking icentral-edge v0.1.0
[INFO] [stderr]     Checking icentral-errors v0.1.0
[INFO] [stderr]     Checking icentral-neighbors v0.1.0
[INFO] [stderr]     Checking icentral-label-map v0.1.0
[INFO] [stderr]     Checking icentral-edges v0.1.0
[INFO] [stderr]     Checking icentral-cycle v0.1.0
[INFO] [stderr]     Checking icentral-bcc v0.1.0
[INFO] [stderr]     Checking icentral-graph-interface v0.1.0
[INFO] [stderr]     Checking icentral-parents-map v0.1.0
[INFO] [stderr]     Checking icentral-scores v0.1.0
[INFO] [stderr]     Checking icentral-mucid-map v0.1.0
[INFO] [stderr]     Checking icentral-subgraph v0.1.0
[INFO] [stderr]     Checking icentral-bc-mem v0.1.0
[INFO] [stderr]     Checking icentral-component v0.1.0
[INFO] [stderr]     Checking icentral-workspace v0.1.0
[INFO] [stderr]     Checking icentral-bbfs v0.1.0
[INFO] [stderr]     Checking icentral-rbfs v0.1.0
[INFO] [stderr]     Checking icentral-brandes v0.1.0
[INFO] [stderr]     Checking icentral-muc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/muc.rs:811:84
[INFO] [stdout]     |
[INFO] [stdout] 811 |             self.iteration_1(source, src, dst, src_distance, dst_distance, scores);;
[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/muc.rs:816:84
[INFO] [stdout]     |
[INFO] [stdout] 816 |             self.iteration_2(source, src, dst, src_distance, dst_distance, scores);;
[INFO] [stdout]     |                                                                                    ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/muc.rs:811:84
[INFO] [stdout]     |
[INFO] [stdout] 811 |             self.iteration_1(source, src, dst, src_distance, dst_distance, scores);;
[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/muc.rs:816:84
[INFO] [stdout]     |
[INFO] [stdout] 816 |             self.iteration_2(source, src, dst, src_distance, dst_distance, scores);;
[INFO] [stdout]     |                                                                                    ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/muc.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn default() -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] ...
[INFO] [stdout] 88 |             ..Default::default()
[INFO] [stdout]    |               ------------------ recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/muc.rs:228:12
[INFO] [stdout]     |
[INFO] [stdout] 228 |         if let conn_vertex_map = other.conn_vertex_map.lock()? {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/muc.rs:329:12
[INFO] [stdout]     |
[INFO] [stdout] 329 |         if let conn_vertex_map = self.conn_vertex_map.lock()? {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ids`
[INFO] [stdout]    --> src/muc.rs:331:21
[INFO] [stdout]     |
[INFO] [stdout] 331 |             for (id,ids) in conn_vertex_map.iter() {
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_ids`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/muc.rs:350:12
[INFO] [stdout]     |
[INFO] [stdout] 350 |         if let conn_vertex_map = self.conn_vertex_map.lock()? {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/muc.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn default() -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] ...
[INFO] [stdout] 88 |             ..Default::default()
[INFO] [stdout]    |               ------------------ recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/muc.rs:377:12
[INFO] [stdout]     |
[INFO] [stdout] 377 |         if let mut conn_vertex_map = self.conn_vertex_map.lock()? {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/muc.rs:410:12
[INFO] [stdout]     |
[INFO] [stdout] 410 |         if let conn_vertex_map = self.conn_vertex_map.lock()? {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/muc.rs:228:12
[INFO] [stdout]     |
[INFO] [stdout] 228 |         if let conn_vertex_map = other.conn_vertex_map.lock()? {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `vg_s` is never read
[INFO] [stdout]    --> src/muc.rs:518:35
[INFO] [stdout]     |
[INFO] [stdout] 518 |             let mut vg_s: usize = 0;
[INFO] [stdout]     |                                   ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 521 |             vg_s = self.tmp_subgraph_map.subgraph_for_node(source).num_nodes();
[INFO] [stdout]     |             ------------------------------------------------------------------ `vg_s` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `vg_n` is never read
[INFO] [stdout]    --> src/muc.rs:519:35
[INFO] [stdout]     |
[INFO] [stdout] 519 |             let mut vg_n: usize = 0;
[INFO] [stdout]     |                                   ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 522 |             vg_n = self.tmp_subgraph_map.subgraph_for_node(v_n).num_nodes();
[INFO] [stdout]     |             --------------------------------------------------------------- `vg_n` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/muc.rs:734:12
[INFO] [stdout]     |
[INFO] [stdout] 734 |         if let conn_vertex_map = self.conn_vertex_map.lock()? {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src_distance`
[INFO] [stdout]    --> src/muc.rs:825:9
[INFO] [stdout]     |
[INFO] [stdout] 825 |         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/muc.rs:826:9
[INFO] [stdout]     |
[INFO] [stdout] 826 |         dst_distance:  f64,
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dst_distance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/muc.rs:329:12
[INFO] [stdout]     |
[INFO] [stdout] 329 |         if let conn_vertex_map = self.conn_vertex_map.lock()? {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `subgraph_micentraltude` are never read
[INFO] [stdout]   --> src/muc.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct ConnectionVertexDescriptor {
[INFO] [stdout]    |            -------------------------- fields in this struct
[INFO] [stdout] 10 |     id:                 NodeId,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 11 |     subgraph_micentraltude: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ConnectionVertexDescriptor` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ids`
[INFO] [stdout]    --> src/muc.rs:331:21
[INFO] [stdout]     |
[INFO] [stdout] 331 |             for (id,ids) in conn_vertex_map.iter() {
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_ids`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/muc.rs:350:12
[INFO] [stdout]     |
[INFO] [stdout] 350 |         if let conn_vertex_map = self.conn_vertex_map.lock()? {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/muc.rs:377:12
[INFO] [stdout]     |
[INFO] [stdout] 377 |         if let mut conn_vertex_map = self.conn_vertex_map.lock()? {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/muc.rs:410:12
[INFO] [stdout]     |
[INFO] [stdout] 410 |         if let conn_vertex_map = self.conn_vertex_map.lock()? {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/muc.rs:243:13
[INFO] [stdout]     |
[INFO] [stdout] 243 |             self.muc_subgraph.insert_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]     = 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] 243 |             let _ = self.muc_subgraph.insert_edge(&Edge::new(*src, *dst));
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `vg_s` is never read
[INFO] [stdout]    --> src/muc.rs:518:35
[INFO] [stdout]     |
[INFO] [stdout] 518 |             let mut vg_s: usize = 0;
[INFO] [stdout]     |                                   ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 521 |             vg_s = self.tmp_subgraph_map.subgraph_for_node(source).num_nodes();
[INFO] [stdout]     |             ------------------------------------------------------------------ `vg_s` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `vg_n` is never read
[INFO] [stdout]    --> src/muc.rs:519:35
[INFO] [stdout]     |
[INFO] [stdout] 519 |             let mut vg_n: usize = 0;
[INFO] [stdout]     |                                   ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 522 |             vg_n = self.tmp_subgraph_map.subgraph_for_node(v_n).num_nodes();
[INFO] [stdout]     |             --------------------------------------------------------------- `vg_n` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/muc.rs:675:9
[INFO] [stdout]     |
[INFO] [stdout] 675 |         self.update_scores_after_bfs(scores);
[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] 675 |         let _ = self.update_scores_after_bfs(scores);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/muc.rs:757:9
[INFO] [stdout]     |
[INFO] [stdout] 757 |         self.muc_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] 757 |         let _ = self.muc_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/muc.rs:788:9
[INFO] [stdout]     |
[INFO] [stdout] 788 |         self.muc_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] 788 |         let _ = self.muc_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/muc.rs:811:13
[INFO] [stdout]     |
[INFO] [stdout] 811 |             self.iteration_1(source, src, dst, src_distance, dst_distance, scores);;
[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] 811 |             let _ = self.iteration_1(source, src, dst, src_distance, dst_distance, scores);;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/muc.rs:816:13
[INFO] [stdout]     |
[INFO] [stdout] 816 |             self.iteration_2(source, src, dst, src_distance, dst_distance, scores);;
[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] 816 |             let _ = self.iteration_2(source, src, dst, src_distance, dst_distance, scores);;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/muc.rs:734:12
[INFO] [stdout]     |
[INFO] [stdout] 734 |         if let conn_vertex_map = self.conn_vertex_map.lock()? {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/muc.rs:963:9
[INFO] [stdout]     |
[INFO] [stdout] 963 | /         self.muc_fast_subgraph.iteration_2(
[INFO] [stdout] 964 | |             &self.tmp_subgraph_map, 
[INFO] [stdout] 965 | |             &self.tmp_conn_vertex_map, 
[INFO] [stdout] 966 | |             source, 
[INFO] [stdout] ...   |
[INFO] [stdout] 971 | |             scores
[INFO] [stdout] 972 | |         );
[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] 963 |         let _ = self.muc_fast_subgraph.iteration_2(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/interface.rs:27:34
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn get_mucs<'a>(&'a self) -> &Vec<MinimumUnionCycle<GH>>;
[INFO] [stdout]    |                      --          ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn get_mucs<'a>(&'a self) -> &'a Vec<MinimumUnionCycle<GH>>;
[INFO] [stdout]    |                                   ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src_distance`
[INFO] [stdout]    --> src/muc.rs:825:9
[INFO] [stdout]     |
[INFO] [stdout] 825 |         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/muc.rs:826:9
[INFO] [stdout]     |
[INFO] [stdout] 826 |         dst_distance:  f64,
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dst_distance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `subgraph_micentraltude` are never read
[INFO] [stdout]   --> src/muc.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct ConnectionVertexDescriptor {
[INFO] [stdout]    |            -------------------------- fields in this struct
[INFO] [stdout] 10 |     id:                 NodeId,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 11 |     subgraph_micentraltude: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ConnectionVertexDescriptor` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/muc.rs:243:13
[INFO] [stdout]     |
[INFO] [stdout] 243 |             self.muc_subgraph.insert_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]     = 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] 243 |             let _ = self.muc_subgraph.insert_edge(&Edge::new(*src, *dst));
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/muc.rs:675:9
[INFO] [stdout]     |
[INFO] [stdout] 675 |         self.update_scores_after_bfs(scores);
[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] 675 |         let _ = self.update_scores_after_bfs(scores);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/muc.rs:757:9
[INFO] [stdout]     |
[INFO] [stdout] 757 |         self.muc_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] 757 |         let _ = self.muc_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/muc.rs:788:9
[INFO] [stdout]     |
[INFO] [stdout] 788 |         self.muc_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] 788 |         let _ = self.muc_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/muc.rs:811:13
[INFO] [stdout]     |
[INFO] [stdout] 811 |             self.iteration_1(source, src, dst, src_distance, dst_distance, scores);;
[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] 811 |             let _ = self.iteration_1(source, src, dst, src_distance, dst_distance, scores);;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/muc.rs:816:13
[INFO] [stdout]     |
[INFO] [stdout] 816 |             self.iteration_2(source, src, dst, src_distance, dst_distance, scores);;
[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] 816 |             let _ = self.iteration_2(source, src, dst, src_distance, dst_distance, scores);;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/muc.rs:963:9
[INFO] [stdout]     |
[INFO] [stdout] 963 | /         self.muc_fast_subgraph.iteration_2(
[INFO] [stdout] 964 | |             &self.tmp_subgraph_map, 
[INFO] [stdout] 965 | |             &self.tmp_conn_vertex_map, 
[INFO] [stdout] 966 | |             source, 
[INFO] [stdout] ...   |
[INFO] [stdout] 971 | |             scores
[INFO] [stdout] 972 | |         );
[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] 963 |         let _ = self.muc_fast_subgraph.iteration_2(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/interface.rs:27:34
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn get_mucs<'a>(&'a self) -> &Vec<MinimumUnionCycle<GH>>;
[INFO] [stdout]    |                      --          ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn get_mucs<'a>(&'a self) -> &'a Vec<MinimumUnionCycle<GH>>;
[INFO] [stdout]    |                                   ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 37.05s
[INFO] running `Command { std: "docker" "inspect" "d1e65c50d0658187418eb8138d447a304dd1db3bd333a79db01e003a2b633867", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1e65c50d0658187418eb8138d447a304dd1db3bd333a79db01e003a2b633867", kill_on_drop: false }`
[INFO] [stdout] d1e65c50d0658187418eb8138d447a304dd1db3bd333a79db01e003a2b633867
