[INFO] cloning repository https://github.com/specCon18/dsa-oxide
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/specCon18/dsa-oxide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FspecCon18%2Fdsa-oxide", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FspecCon18%2Fdsa-oxide'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9f4985f127a344f6a21faab207cfcef9da3eda18
[INFO] checking specCon18/dsa-oxide against try#ddcf048784667508cd676fef4667f88ae15628a3 for pr-148271
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FspecCon18%2Fdsa-oxide" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/specCon18/dsa-oxide
[INFO] finished tweaking git repo https://github.com/specCon18/dsa-oxide
[INFO] tweaked toml for git repo https://github.com/specCon18/dsa-oxide written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/specCon18/dsa-oxide on toolchain ddcf048784667508cd676fef4667f88ae15628a3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/specCon18/dsa-oxide 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" "+ddcf048784667508cd676fef4667f88ae15628a3" "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
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0bafce7af0f1475e939853ef320bae74dcd709f618165a05aa9ff085631fad24
[INFO] running `Command { std: "docker" "start" "-a" "0bafce7af0f1475e939853ef320bae74dcd709f618165a05aa9ff085631fad24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bafce7af0f1475e939853ef320bae74dcd709f618165a05aa9ff085631fad24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bafce7af0f1475e939853ef320bae74dcd709f618165a05aa9ff085631fad24", kill_on_drop: false }`
[INFO] [stdout] 0bafce7af0f1475e939853ef320bae74dcd709f618165a05aa9ff085631fad24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ad35d7db05cf27e2f0cd59fbd8af182c8bfd41682236b9d741ffeeb79670b62
[INFO] running `Command { std: "docker" "start" "-a" "0ad35d7db05cf27e2f0cd59fbd8af182c8bfd41682236b9d741ffeeb79670b62", kill_on_drop: false }`
[INFO] [stderr]     Checking algos-in-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/radix_sort.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Bucket {
[INFO] [stdout]   |        ------ field in this struct
[INFO] [stdout] 5 |     value: u8,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Bucket` 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: associated function `new` is never used
[INFO] [stdout]   --> src/radix_sort.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Bucket {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 10 |     /// Creates a new Bucket instance with initial value 0 and an empty queue.
[INFO] [stdout] 11 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_empty` and `peek` are never used
[INFO] [stdout]   --> src/radix_sort.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Buckets {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn is_empty(&self, bucket_index: usize) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn peek(&self, bucket_index: usize) -> Option<&u64> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `validate_sort` is never used
[INFO] [stdout]    --> src/radix_sort.rs:138:4
[INFO] [stdout]     |
[INFO] [stdout] 138 | fn validate_sort(arr: Vec<u64>) -> Result<(), &'static str> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dijkstras_shortest_path` is never used
[INFO] [stdout]   --> src/dijkstras.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn dijkstras_shortest_path( source: usize, sink: usize, graph: WeightedAdjacencyList<usize, usize>) -> Option<Vec<usize>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `has_unvisited` is never used
[INFO] [stdout]   --> src/dijkstras.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn has_unvisited(seen: &[bool], dists: &[f64]) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_lowest_unvisited` is never used
[INFO] [stdout]   --> src/dijkstras.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn get_lowest_unvisited(seen: &[bool], dists: &[f64]) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `length`, `is_empty`, and `peek` are never used
[INFO] [stdout]   --> src/data_structures/queue.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl<T> Queue<T> {
[INFO] [stdout]    | ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub fn length(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Stack` is never constructed
[INFO] [stdout]  --> src/data_structures/stack.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Stack<T> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `length`, `pop`, `push`, `is_empty`, and `peek` are never used
[INFO] [stdout]   --> src/data_structures/stack.rs:7:12
[INFO] [stdout]    |
[INFO] [stdout]  6 | impl<T: Copy> Stack<T> {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout]  7 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub fn length(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn push(&mut self, item: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MinHeap` is never constructed
[INFO] [stdout]  --> src/data_structures/min_heap.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct MinHeap<T> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, `pop`, `heapify_up`, and `heapify_down` are never used
[INFO] [stdout]   --> src/data_structures/min_heap.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl<T: PartialOrd> MinHeap<T> {
[INFO] [stdout]    | ------------------------------ associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn push(&mut self, element: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn heapify_up(&mut self, mut index: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 92 |     fn heapify_down(&mut self, mut index: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WeightedAdjacencyList` is never constructed
[INFO] [stdout]  --> src/data_structures/weighted_adj_list.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct WeightedAdjacencyList<T, W> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add_vertex`, `add_edge`, `get_weight`, `get_neighbors`, and `len` are never used
[INFO] [stdout]   --> src/data_structures/weighted_adj_list.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | / impl<T, W> WeightedAdjacencyList<T, W>
[INFO] [stdout] 20 | | where
[INFO] [stdout] 21 | |     T: std::hash::Hash + Eq + Clone,
[INFO] [stdout]    | |____________________________________- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 24 |       pub fn new() -> Self {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |       pub fn add_vertex(&mut self, vertex: T) {
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |       pub fn add_edge(&mut self, from: T, to: T, weight: W) {
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |       pub fn get_weight(&self, from: &T, to: &T) -> Option<&W> {
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |       pub fn get_neighbors(&self, vertex: &T) -> Option<&HashMap<T, W>> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |       pub fn len(&self) -> usize {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]   --> src/data_structures/weighted_adj_matrix.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl WeightedAdjacencyMatrix {
[INFO] [stdout]    | ---------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub fn get_value(&self, row: usize, col: usize) -> Option<u64> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn transpose(&self) -> WeightedAdjacencyMatrix {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn get_row(&self, row_index: usize) -> Option<&Vec<u64>> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn get_column(&self, col_index: usize) -> Option<Vec<u64>> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn multiply_scalar(&mut self, scalar: u64) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     pub fn add_matrix(&mut self, other: &WeightedAdjacencyMatrix) -> Option<()> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn subtract_matrix(&mut self, other: &WeightedAdjacencyMatrix) -> Option<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RingBuffer` is never constructed
[INFO] [stdout]   --> src/data_structures/ring_buffer.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub struct RingBuffer<T> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/data_structures/ring_buffer.rs:63:12
[INFO] [stdout]     |
[INFO] [stdout]  62 | impl<T> RingBuffer<T> {
[INFO] [stdout]     | --------------------- associated items in this implementation
[INFO] [stdout]  63 |     pub fn new(capacity: usize) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  75 |     pub fn push(&mut self, item: T) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  83 |     pub fn pop(&mut self) -> Option<T> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  92 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  96 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 108 |     pub fn capacity(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/radix_sort.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Bucket {
[INFO] [stdout]   |        ------ field in this struct
[INFO] [stdout] 5 |     value: u8,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Bucket` 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: associated function `new` is never used
[INFO] [stdout]   --> src/radix_sort.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Bucket {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 10 |     /// Creates a new Bucket instance with initial value 0 and an empty queue.
[INFO] [stdout] 11 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_empty` and `peek` are never used
[INFO] [stdout]   --> src/radix_sort.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Buckets {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn is_empty(&self, bucket_index: usize) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn peek(&self, bucket_index: usize) -> Option<&u64> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `validate_sort` is never used
[INFO] [stdout]    --> src/radix_sort.rs:138:4
[INFO] [stdout]     |
[INFO] [stdout] 138 | fn validate_sort(arr: Vec<u64>) -> Result<(), &'static str> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `has_unvisited` is never used
[INFO] [stdout]   --> src/dijkstras.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn has_unvisited(seen: &[bool], dists: &[f64]) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_lowest_unvisited` is never used
[INFO] [stdout]   --> src/dijkstras.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn get_lowest_unvisited(seen: &[bool], dists: &[f64]) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `length`, `is_empty`, and `peek` are never used
[INFO] [stdout]   --> src/data_structures/queue.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl<T> Queue<T> {
[INFO] [stdout]    | ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub fn length(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Stack` is never constructed
[INFO] [stdout]  --> src/data_structures/stack.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Stack<T> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `length`, `pop`, `push`, `is_empty`, and `peek` are never used
[INFO] [stdout]   --> src/data_structures/stack.rs:7:12
[INFO] [stdout]    |
[INFO] [stdout]  6 | impl<T: Copy> Stack<T> {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout]  7 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub fn length(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn push(&mut self, item: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_weight` is never used
[INFO] [stdout]   --> src/data_structures/weighted_adj_list.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | / impl<T, W> WeightedAdjacencyList<T, W>
[INFO] [stdout] 20 | | where
[INFO] [stdout] 21 | |     T: std::hash::Hash + Eq + Clone,
[INFO] [stdout]    | |____________________________________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 46 |       pub fn get_weight(&self, from: &T, to: &T) -> Option<&W> {
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]   --> src/data_structures/weighted_adj_matrix.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl WeightedAdjacencyMatrix {
[INFO] [stdout]    | ---------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub fn get_value(&self, row: usize, col: usize) -> Option<u64> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn transpose(&self) -> WeightedAdjacencyMatrix {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn get_row(&self, row_index: usize) -> Option<&Vec<u64>> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn get_column(&self, col_index: usize) -> Option<Vec<u64>> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn multiply_scalar(&mut self, scalar: u64) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     pub fn add_matrix(&mut self, other: &WeightedAdjacencyMatrix) -> Option<()> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn subtract_matrix(&mut self, other: &WeightedAdjacencyMatrix) -> Option<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "0ad35d7db05cf27e2f0cd59fbd8af182c8bfd41682236b9d741ffeeb79670b62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ad35d7db05cf27e2f0cd59fbd8af182c8bfd41682236b9d741ffeeb79670b62", kill_on_drop: false }`
[INFO] [stdout] 0ad35d7db05cf27e2f0cd59fbd8af182c8bfd41682236b9d741ffeeb79670b62
