[INFO] cloning repository https://github.com/Lucian-4a25/rust-collections
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lucian-4a25/rust-collections" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLucian-4a25%2Frust-collections", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5d4532997a77ab2c458d21131f56d2ebae5625a0
[INFO] checking Lucian-4a25/rust-collections against master#249595384b4589c71a00d622c4253f62c7f5ddbd for pr-127054
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLucian-4a25%2Frust-collections" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
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[INFO] validating manifest of git repo https://github.com/Lucian-4a25/rust-collections on toolchain 249595384b4589c71a00d622c4253f62c7f5ddbd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+249595384b4589c71a00d622c4253f62c7f5ddbd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Lucian-4a25/rust-collections
[INFO] finished tweaking git repo https://github.com/Lucian-4a25/rust-collections
[INFO] tweaked toml for git repo https://github.com/Lucian-4a25/rust-collections written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Lucian-4a25/rust-collections 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" "+249595384b4589c71a00d622c4253f62c7f5ddbd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
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[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking Lucian-4a25/rust-collections against try#3a8bed575a08bd69d7fd880c6a28c07854726e3b for pr-127054
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLucian-4a25%2Frust-collections" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lucian-4a25/rust-collections on toolchain 3a8bed575a08bd69d7fd880c6a28c07854726e3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a8bed575a08bd69d7fd880c6a28c07854726e3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Lucian-4a25/rust-collections
[INFO] finished tweaking git repo https://github.com/Lucian-4a25/rust-collections
[INFO] tweaked toml for git repo https://github.com/Lucian-4a25/rust-collections written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Lucian-4a25/rust-collections 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" "+3a8bed575a08bd69d7fd880c6a28c07854726e3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+3a8bed575a08bd69d7fd880c6a28c07854726e3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a256d2e8d3e2ae8e4c787bde7bfeb05c6f49b26eeb987a58446d1969645c3a06
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[INFO] running `Command { std: "docker" "inspect" "a256d2e8d3e2ae8e4c787bde7bfeb05c6f49b26eeb987a58446d1969645c3a06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a256d2e8d3e2ae8e4c787bde7bfeb05c6f49b26eeb987a58446d1969645c3a06", kill_on_drop: false }`
[INFO] [stdout] a256d2e8d3e2ae8e4c787bde7bfeb05c6f49b26eeb987a58446d1969645c3a06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+3a8bed575a08bd69d7fd880c6a28c07854726e3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c2786fa82d7db404124aa73b2a912493cccc8a9e6b51f9e85d811c97231846f
[INFO] running `Command { std: "docker" "start" "-a" "1c2786fa82d7db404124aa73b2a912493cccc8a9e6b51f9e85d811c97231846f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking hashbrown v0.14.0
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]     Checking indexmap v2.0.0
[INFO] [stderr]     Checking getrandom v0.2.13
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rust-collections v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `IntoNeiborghbors`
[INFO] [stdout]  --> src/graph/algo/simple_paths.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     visit::{IntoNeiborghbors, IntoNeighborsDirected, NodeCount},
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VisitMap`
[INFO] [stdout]   --> src/graph/algo/mod.rs:11:77
[INFO] [stdout]    |
[INFO] [stdout] 11 | use super::visit::{IntoNeighborsDirected, IntoNodeIdentifiers, Topological, VisitMap, Visitable};
[INFO] [stdout]    |                                                                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap`, `HashSet`, and `hash::Hash`
[INFO] [stdout]   --> src/graph/algo/mod.rs:15:19
[INFO] [stdout]    |
[INFO] [stdout] 15 |     collections::{HashMap, HashSet},
[INFO] [stdout]    |                   ^^^^^^^  ^^^^^^^
[INFO] [stdout] 16 |     hash::Hash,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IntoNeiborghbors`
[INFO] [stdout]  --> src/graph/algo/simple_paths.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     visit::{IntoNeiborghbors, IntoNeighborsDirected, NodeCount},
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VisitMap`
[INFO] [stdout]   --> src/graph/algo/mod.rs:11:77
[INFO] [stdout]    |
[INFO] [stdout] 11 | use super::visit::{IntoNeighborsDirected, IntoNodeIdentifiers, Topological, VisitMap, Visitable};
[INFO] [stdout]    |                                                                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap`, `HashSet`, and `hash::Hash`
[INFO] [stdout]   --> src/graph/algo/mod.rs:15:19
[INFO] [stdout]    |
[INFO] [stdout] 15 |     collections::{HashMap, HashSet},
[INFO] [stdout]    |                   ^^^^^^^  ^^^^^^^
[INFO] [stdout] 16 |     hash::Hash,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `exclusive_range_pattern` has been stable since 1.80.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(exclusive_range_pattern)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `exclusive_range_pattern` has been stable since 1.80.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(exclusive_range_pattern)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btreemap_cus.rs:205:17
[INFO] [stdout]     |
[INFO] [stdout] 205 |             let mut new_node_mut = new_node.as_mut();
[INFO] [stdout]     |                 ----^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btreemap_cus.rs:205:17
[INFO] [stdout]     |
[INFO] [stdout] 205 |             let mut new_node_mut = new_node.as_mut();
[INFO] [stdout]     |                 ----^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NonOuter` is never constructed
[INFO] [stdout]    --> src/graph/algo/matching.rs:246:5
[INFO] [stdout]     |
[INFO] [stdout] 241 | enum Label {
[INFO] [stdout]     |      ----- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 246 |     NonOuter,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Label` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GraphBase`
[INFO] [stdout]  --> benches/common/factory.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 |     visit::{GraphBase, NodeIndexable},
[INFO] [stdout]   |             ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust_collections::graph::visit::IntoNeighborsDirected`
[INFO] [stdout]  --> tests/algo/isomorphism.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rust_collections::graph::visit::IntoNeighborsDirected;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Direction`
[INFO] [stdout]  --> tests/algo/isomorphism.rs:8:41
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rust_collections::graph::{Directed, Direction, GraphType, UnDirected};
[INFO] [stdout]   |                                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `stable_graph`
[INFO] [stdout]    --> tests/algo/matching.rs:107:7
[INFO] [stdout]     |
[INFO] [stdout] 107 | #[cfg(feature = "stable_graph")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `stable_graph` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `stable_graph`
[INFO] [stdout]    --> tests/algo/matching.rs:132:7
[INFO] [stdout]     |
[INFO] [stdout] 132 | #[cfg(feature = "stable_graph")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `stable_graph` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use core::num;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem::ManuallyDrop`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::mem::ManuallyDrop;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `Read`, `Seek`, `alloc::Layout`, `fs::File`, `ptr::addr_of_mut`, and `time::Duration`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     alloc::Layout,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 18 |     collections::{BTreeMap, HashMap, LinkedList, VecDeque},
[INFO] [stdout] 19 |     fs::File,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 20 |     io::{Error, Read, Seek},
[INFO] [stdout]    |          ^^^^^  ^^^^  ^^^^
[INFO] [stdout] 21 |     mem::MaybeUninit,
[INFO] [stdout] 22 |     ptr::addr_of_mut,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 23 |     time::Duration,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Directed` and `Direction`
[INFO] [stdout]   --> src/main.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 | use petgraph::{Directed, Direction};
[INFO] [stdout]    |                ^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `is_isomorphism_matching`, `is_isomorphism_semantic_matching`, `isomorphism_matching_iter`, and `isomorphism_semantic_matching_iter`
[INFO] [stdout]  --> src/graph/algo/isomorphism/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     is_isomorphism_matching, is_isomorphism_semantic_matching, isomorphism_matching_iter,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 8 |     isomorphism_semantic_matching_iter,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `vf2pp::Vf2ppMatcherBuilder`
[INFO] [stdout]   --> src/graph/algo/isomorphism/mod.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use vf2pp::Vf2ppMatcherBuilder;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `vf2pp_is_isomorphism_matching`, `vf2pp_is_isomorphism_semantic_matching`, and `vf2pp_isomorphism_semantic_matching_iter`
[INFO] [stdout]   --> src/graph/algo/isomorphism/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     vf2pp_is_isomorphism_matching, vf2pp_is_isomorphism_semantic_matching,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 14 |     vf2pp_isomorphism_semantic_matching_iter,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IntoNeiborghbors`
[INFO] [stdout]  --> src/graph/algo/simple_paths.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     visit::{IntoNeiborghbors, IntoNeighborsDirected, NodeCount},
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VisitMap`
[INFO] [stdout]   --> src/graph/algo/mod.rs:11:77
[INFO] [stdout]    |
[INFO] [stdout] 11 | use super::visit::{IntoNeighborsDirected, IntoNodeIdentifiers, Topological, VisitMap, Visitable};
[INFO] [stdout]    |                                                                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap`, `HashSet`, and `hash::Hash`
[INFO] [stdout]   --> src/graph/algo/mod.rs:15:19
[INFO] [stdout]    |
[INFO] [stdout] 15 |     collections::{HashMap, HashSet},
[INFO] [stdout]    |                   ^^^^^^^  ^^^^^^^
[INFO] [stdout] 16 |     hash::Hash,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `collections::HashSet`
[INFO] [stdout]  --> src/skip_list.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{cmp::Ordering, collections::HashSet, fmt::Debug, ptr::NonNull};
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use core::num;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem::ManuallyDrop`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::mem::ManuallyDrop;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `alloc::Layout` and `time::Duration`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     alloc::Layout,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     time::Duration,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Direction`
[INFO] [stdout]   --> src/main.rs:26:26
[INFO] [stdout]    |
[INFO] [stdout] 26 | use petgraph::{Directed, Direction};
[INFO] [stdout]    |                          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `is_isomorphism_matching`, `is_isomorphism_semantic_matching`, `isomorphism_matching_iter`, and `isomorphism_semantic_matching_iter`
[INFO] [stdout]  --> src/graph/algo/isomorphism/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     is_isomorphism_matching, is_isomorphism_semantic_matching, isomorphism_matching_iter,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 8 |     isomorphism_semantic_matching_iter,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `vf2pp::Vf2ppMatcherBuilder`
[INFO] [stdout]   --> src/graph/algo/isomorphism/mod.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use vf2pp::Vf2ppMatcherBuilder;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `vf2pp_is_isomorphism_matching`, `vf2pp_is_isomorphism_semantic_matching`, and `vf2pp_isomorphism_semantic_matching_iter`
[INFO] [stdout]   --> src/graph/algo/isomorphism/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     vf2pp_is_isomorphism_matching, vf2pp_is_isomorphism_semantic_matching,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 14 |     vf2pp_isomorphism_semantic_matching_iter,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IntoNeiborghbors`
[INFO] [stdout]  --> src/graph/algo/simple_paths.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     visit::{IntoNeiborghbors, IntoNeighborsDirected, NodeCount},
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VisitMap`
[INFO] [stdout]   --> src/graph/algo/mod.rs:11:77
[INFO] [stdout]    |
[INFO] [stdout] 11 | use super::visit::{IntoNeighborsDirected, IntoNodeIdentifiers, Topological, VisitMap, Visitable};
[INFO] [stdout]    |                                                                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap`, `HashSet`, and `hash::Hash`
[INFO] [stdout]   --> src/graph/algo/mod.rs:15:19
[INFO] [stdout]    |
[INFO] [stdout] 15 |     collections::{HashMap, HashSet},
[INFO] [stdout]    |                   ^^^^^^^  ^^^^^^^
[INFO] [stdout] 16 |     hash::Hash,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `exclusive_range_pattern` has been stable since 1.80.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(exclusive_range_pattern)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NonOuter` is never constructed
[INFO] [stdout]    --> src/graph/algo/matching.rs:246:5
[INFO] [stdout]     |
[INFO] [stdout] 241 | enum Label {
[INFO] [stdout]     |      ----- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 246 |     NonOuter,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Label` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `exclusive_range_pattern` has been stable since 1.80.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(exclusive_range_pattern)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::io::Write;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btreemap_cus.rs:205:17
[INFO] [stdout]     |
[INFO] [stdout] 205 |             let mut new_node_mut = new_node.as_mut();
[INFO] [stdout]     |                 ----^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btreemap_cus.rs:205:17
[INFO] [stdout]     |
[INFO] [stdout] 205 |             let mut new_node_mut = new_node.as_mut();
[INFO] [stdout]     |                 ----^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FieldStruct` is never constructed
[INFO] [stdout]    --> src/main.rs:385:8
[INFO] [stdout]     |
[INFO] [stdout] 385 | struct FieldStruct {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vf2pp_is_isomorphism_matching` is never used
[INFO] [stdout]   --> src/graph/algo/isomorphism/vf2pp.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn vf2pp_is_isomorphism_matching<G0, G1>(g0: G0, g1: G1, subgraph: bool) -> bool
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vf2pp_is_isomorphism_semantic_matching` is never used
[INFO] [stdout]   --> src/graph/algo/isomorphism/vf2pp.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn vf2pp_is_isomorphism_semantic_matching<G0, G1, NM, EM>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vf2pp_isomorphism_semantic_matching_iter` is never used
[INFO] [stdout]   --> src/graph/algo/isomorphism/vf2pp.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn vf2pp_isomorphism_semantic_matching_iter<'a, G0, G1, NM, EM>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `k_shortest_path` is never used
[INFO] [stdout]   --> src/graph/algo/k_shortest_path.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn k_shortest_path<G, F, K>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greedy_matching` is never used
[INFO] [stdout]   --> src/graph/algo/matching.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn greedy_matching<G>(g: G) -> Matching<G>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dfs_non_backtracing` is never used
[INFO] [stdout]   --> src/graph/algo/matching.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn dfs_non_backtracing<G, F>(g: G, node: G::NodeId, visited: &mut G::Map, mut add_mate: F)
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `maximum_matching` is never used
[INFO] [stdout]   --> src/graph/algo/matching.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn maximum_matching<G>(g: G) -> Matching<G>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `assign_edge_lable` is never used
[INFO] [stdout]    --> src/graph/algo/matching.rs:145:4
[INFO] [stdout]     |
[INFO] [stdout] 145 | fn assign_edge_lable<G>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `augment_path` is never used
[INFO] [stdout]    --> src/graph/algo/matching.rs:206:4
[INFO] [stdout]     |
[INFO] [stdout] 206 | fn augment_path(outer: usize, target: usize, mate: &mut Vec<Option<usize>>, label: &Vec<Label>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Label` is never used
[INFO] [stdout]    --> src/graph/algo/matching.rs:241:6
[INFO] [stdout]     |
[INFO] [stdout] 241 | enum Label {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_outer`, `is_nonouter`, `try_next_outer`, and `try_edge_outer` are never used
[INFO] [stdout]    --> src/graph/algo/matching.rs:250:8
[INFO] [stdout]     |
[INFO] [stdout] 249 | impl Label {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] 250 |     fn is_outer(self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 257 |     fn is_nonouter(self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 261 |     fn try_next_outer(self) -> Option<usize> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 268 |     fn try_edge_outer(self) -> Option<(usize, usize)> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Matching` is never constructed
[INFO] [stdout]    --> src/graph/algo/matching.rs:276:12
[INFO] [stdout]     |
[INFO] [stdout] 276 | pub struct Matching<G>
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MatchedEdges` is never constructed
[INFO] [stdout]    --> src/graph/algo/matching.rs:342:12
[INFO] [stdout]     |
[INFO] [stdout] 342 | pub struct MatchedEdges<'a, G>
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MatchedNodes` is never constructed
[INFO] [stdout]    --> src/graph/algo/matching.rs:377:12
[INFO] [stdout]     |
[INFO] [stdout] 377 | pub struct MatchedNodes<'a, G: NodeIndexable> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `all_simple_paths` is never used
[INFO] [stdout]  --> src/graph/algo/simple_paths.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn all_simple_paths<G, P>(
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_all_levels` is never used
[INFO] [stdout]   --> src/skip_list.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | / impl<K: Ord + Copy, V> SkipList<K, V>
[INFO] [stdout] 45 | | where
[INFO] [stdout] 46 | |     K: Debug,
[INFO] [stdout] 47 | |     V: Debug,
[INFO] [stdout]    | |_____________- method in this implementation
[INFO] [stdout] 48 |   {
[INFO] [stdout] 49 |       fn print_all_levels(&self) {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::slice::Iter` that must be used
[INFO] [stdout]    --> src/main.rs:350:5
[INFO] [stdout]     |
[INFO] [stdout] 350 |     v.iter();
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 350 |     let _ = v.iter();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `world`
[INFO] [stdout]   --> src/variance.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let world = String::from("world");
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/variance.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut hello: &'static str = "hello";
[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/main.rs:590:9
[INFO] [stdout]     |
[INFO] [stdout] 590 |     let mut a = A { v: Some([8; 10]) };
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `d`, `d2`, and `d3` are never read
[INFO] [stdout]    --> src/main.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 182 |     struct Inner {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] 183 |         d: u64,
[INFO] [stdout]     |         ^
[INFO] [stdout] 184 |         d2: u32,
[INFO] [stdout]     |         ^^
[INFO] [stdout] 185 |         d3: u128,
[INFO] [stdout]     |         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `seq_num` and `inner` are never read
[INFO] [stdout]    --> src/main.rs:189:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |     struct Data {
[INFO] [stdout]     |            ---- fields in this struct
[INFO] [stdout] 189 |         seq_num: u16,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 190 |         inner: Inner,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Empty` and `Occupied` are never constructed
[INFO] [stdout]    --> src/main.rs:201:9
[INFO] [stdout]     |
[INFO] [stdout] 200 |     enum E {
[INFO] [stdout]     |          - variants in this enum
[INFO] [stdout] 201 |         Empty,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 202 |         Occupied(Data),
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `a` is never read
[INFO] [stdout]    --> src/main.rs:467:9
[INFO] [stdout]     |
[INFO] [stdout] 466 |     struct K {
[INFO] [stdout]     |            - field in this struct
[INFO] [stdout] 467 |         a: [Option<u32>; 30],
[INFO] [stdout]     |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `a` is never read
[INFO] [stdout]    --> src/main.rs:471:9
[INFO] [stdout]     |
[INFO] [stdout] 470 |     struct M {
[INFO] [stdout]     |            - field in this struct
[INFO] [stdout] 471 |         a: [MaybeUninit<u32>; 30],
[INFO] [stdout]     |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/main.rs:634:18
[INFO] [stdout]     |
[INFO] [stdout] 634 |     struct Dummy(usize);
[INFO] [stdout]     |            ----- ^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Dummy` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vf2pp_is_isomorphism_matching` is never used
[INFO] [stdout]   --> src/graph/algo/isomorphism/vf2pp.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn vf2pp_is_isomorphism_matching<G0, G1>(g0: G0, g1: G1, subgraph: bool) -> bool
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vf2pp_is_isomorphism_semantic_matching` is never used
[INFO] [stdout]   --> src/graph/algo/isomorphism/vf2pp.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn vf2pp_is_isomorphism_semantic_matching<G0, G1, NM, EM>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vf2pp_isomorphism_semantic_matching_iter` is never used
[INFO] [stdout]   --> src/graph/algo/isomorphism/vf2pp.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn vf2pp_isomorphism_semantic_matching_iter<'a, G0, G1, NM, EM>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `k_shortest_path` is never used
[INFO] [stdout]   --> src/graph/algo/k_shortest_path.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn k_shortest_path<G, F, K>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greedy_matching` is never used
[INFO] [stdout]   --> src/graph/algo/matching.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn greedy_matching<G>(g: G) -> Matching<G>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dfs_non_backtracing` is never used
[INFO] [stdout]   --> src/graph/algo/matching.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn dfs_non_backtracing<G, F>(g: G, node: G::NodeId, visited: &mut G::Map, mut add_mate: F)
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `maximum_matching` is never used
[INFO] [stdout]   --> src/graph/algo/matching.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn maximum_matching<G>(g: G) -> Matching<G>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `assign_edge_lable` is never used
[INFO] [stdout]    --> src/graph/algo/matching.rs:145:4
[INFO] [stdout]     |
[INFO] [stdout] 145 | fn assign_edge_lable<G>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `augment_path` is never used
[INFO] [stdout]    --> src/graph/algo/matching.rs:206:4
[INFO] [stdout]     |
[INFO] [stdout] 206 | fn augment_path(outer: usize, target: usize, mate: &mut Vec<Option<usize>>, label: &Vec<Label>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Label` is never used
[INFO] [stdout]    --> src/graph/algo/matching.rs:241:6
[INFO] [stdout]     |
[INFO] [stdout] 241 | enum Label {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_outer`, `is_nonouter`, `try_next_outer`, and `try_edge_outer` are never used
[INFO] [stdout]    --> src/graph/algo/matching.rs:250:8
[INFO] [stdout]     |
[INFO] [stdout] 249 | impl Label {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] 250 |     fn is_outer(self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 257 |     fn is_nonouter(self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 261 |     fn try_next_outer(self) -> Option<usize> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 268 |     fn try_edge_outer(self) -> Option<(usize, usize)> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Matching` is never constructed
[INFO] [stdout]    --> src/graph/algo/matching.rs:276:12
[INFO] [stdout]     |
[INFO] [stdout] 276 | pub struct Matching<G>
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MatchedEdges` is never constructed
[INFO] [stdout]    --> src/graph/algo/matching.rs:342:12
[INFO] [stdout]     |
[INFO] [stdout] 342 | pub struct MatchedEdges<'a, G>
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MatchedNodes` is never constructed
[INFO] [stdout]    --> src/graph/algo/matching.rs:377:12
[INFO] [stdout]     |
[INFO] [stdout] 377 | pub struct MatchedNodes<'a, G: NodeIndexable> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `all_simple_paths` is never used
[INFO] [stdout]  --> src/graph/algo/simple_paths.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn all_simple_paths<G, P>(
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::slice::Iter` that must be used
[INFO] [stdout]    --> src/main.rs:350:5
[INFO] [stdout]     |
[INFO] [stdout] 350 |     v.iter();
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 350 |     let _ = v.iter();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:443:5
[INFO] [stdout]     |
[INFO] [stdout] 443 |     fs.seek(std::io::SeekFrom::Start(1));
[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] 443 |     let _ = fs.seek(std::io::SeekFrom::Start(1));
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:444:5
[INFO] [stdout]     |
[INFO] [stdout] 444 |     fs.read_exact(&mut buffer);
[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] 444 |     let _ = fs.read_exact(&mut buffer);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 40 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.50s
[INFO] running `Command { std: "docker" "inspect" "1c2786fa82d7db404124aa73b2a912493cccc8a9e6b51f9e85d811c97231846f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c2786fa82d7db404124aa73b2a912493cccc8a9e6b51f9e85d811c97231846f", kill_on_drop: false }`
[INFO] [stdout] 1c2786fa82d7db404124aa73b2a912493cccc8a9e6b51f9e85d811c97231846f