[INFO] cloning repository https://github.com/GrossBetruger/CrackingTheJobInterview
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GrossBetruger/CrackingTheJobInterview" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGrossBetruger%2FCrackingTheJobInterview", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGrossBetruger%2FCrackingTheJobInterview'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fc7fbe747672dc0353627501661d3eb77919bb21
[INFO] building GrossBetruger/CrackingTheJobInterview against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGrossBetruger%2FCrackingTheJobInterview" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GrossBetruger/CrackingTheJobInterview on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/GrossBetruger/CrackingTheJobInterview
[INFO] finished tweaking git repo https://github.com/GrossBetruger/CrackingTheJobInterview
[INFO] tweaked toml for git repo https://github.com/GrossBetruger/CrackingTheJobInterview written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/GrossBetruger/CrackingTheJobInterview 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded counter v0.5.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43a58084c304bc349c6fb8b763a0ea6ac8ebcb3ac5700f92b07380136e9b3975
[INFO] running `Command { std: "docker" "start" "-a" "43a58084c304bc349c6fb8b763a0ea6ac8ebcb3ac5700f92b07380136e9b3975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43a58084c304bc349c6fb8b763a0ea6ac8ebcb3ac5700f92b07380136e9b3975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43a58084c304bc349c6fb8b763a0ea6ac8ebcb3ac5700f92b07380136e9b3975", kill_on_drop: false }`
[INFO] [stdout] 43a58084c304bc349c6fb8b763a0ea6ac8ebcb3ac5700f92b07380136e9b3975
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0685dd76cf73087023acd2dd53f999b352330882a545d706304b2e78ff704f61
[INFO] running `Command { std: "docker" "start" "-a" "0685dd76cf73087023acd2dd53f999b352330882a545d706304b2e78ff704f61", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling queues v1.1.0
[INFO] [stderr]    Compiling counter v0.5.2
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling cracking_the_job_interview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `HashSet` and `LinkedList`
[INFO] [stdout]  --> src/linked_lists.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{LinkedList, HashSet};
[INFO] [stdout]   |                        ^^^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> src/graphs.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `petgraph::visit::FilterNode`
[INFO] [stdout]  --> src/graphs.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use petgraph::visit::FilterNode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `petgraph::data::Element::Node`
[INFO] [stdout]  --> src/graphs.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use petgraph::data::Element::Node;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/naive_bayes.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let mut model = &self.model.as_ref().expect("model not initialized");
[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/naive_bayes.rs:75:21
[INFO] [stdout]    |
[INFO] [stdout] 75 |                 let mut mul = model.probabilities[&label]
[INFO] [stdout]    |                     ----^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_unique` is never used
[INFO] [stdout]   --> src/main.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn is_unique(s: String) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_permutation` is never used
[INFO] [stdout]   --> src/main.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn check_permutation(s1: &str, s2: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `palindrome_permutation` is never used
[INFO] [stdout]   --> src/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn palindrome_permutation(s: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `one_away` is never used
[INFO] [stdout]   --> src/main.rs:78:4
[INFO] [stdout]    |
[INFO] [stdout] 78 | fn one_away(s1: String, s2: String) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compare_with_one_change` is never used
[INFO] [stdout]   --> src/main.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn compare_with_one_change(s1: &str, s2: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_compression` is never used
[INFO] [stdout]    --> src/main.rs:131:4
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn string_compression(s: &str) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `push_counter` is never used
[INFO] [stdout]    --> src/main.rs:160:4
[INFO] [stdout]     |
[INFO] [stdout] 160 | fn push_counter(counter: usize, char_vec: &mut Vec<char>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rotate_matrix` is never used
[INFO] [stdout]    --> src/main.rs:169:4
[INFO] [stdout]     |
[INFO] [stdout] 169 | fn rotate_matrix(matrix: Vec<Vec<u32>>) -> Vec<Vec<u32>>{
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/trees_and_graphs.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Node<T> {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BinaryNode` is never constructed
[INFO] [stdout]  --> src/trees_and_graphs.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct BinaryNode<T: std::fmt::Display> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tree` is never constructed
[INFO] [stdout]   --> src/trees_and_graphs.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Tree<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BinaryTree` is never constructed
[INFO] [stdout]   --> src/trees_and_graphs.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct BinaryTree<T: std::fmt::Display> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/trees_and_graphs.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl <T: std::fmt::Display> BinaryNode<T> {
[INFO] [stdout]    | ----------------------------------------- associated function in this implementation
[INFO] [stdout] 23 |     pub fn new(data: T, left: Box<Option<BinaryNode<T>>>, right: Box<Option<BinaryNode<T>>>)
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/trees_and_graphs.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl <T: std::fmt::Display> BinaryTree<T> {
[INFO] [stdout]    | ----------------------------------------- associated function in this implementation
[INFO] [stdout] 34 |     pub fn new(root: BinaryNode<T>) -> BinaryTree<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `leaf_node` are never used
[INFO] [stdout]   --> src/trees_and_graphs.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl<T> Node<T> {
[INFO] [stdout]    | --------------- associated functions in this implementation
[INFO] [stdout] 42 |     pub fn new(data: T, children: Vec<Node<T>>) -> Node<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn leaf_node(data: T) -> Node<T> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/trees_and_graphs.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 57 | impl<T> Tree<T> {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 58 |     pub fn new(root: Node<T>) -> Tree<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `traverse_node_in_order` is never used
[INFO] [stdout]   --> src/trees_and_graphs.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn traverse_node_in_order<T: std::cmp::PartialEq + std::fmt::Display>(node: &Node<T>){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_neighbors` is never used
[INFO] [stdout]  --> src/graphs.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn handle_neighbors(queue: & mut Queue<NodeIndex>, visited: &HashSet<NodeIndex>,
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search_path` is never used
[INFO] [stdout]   --> src/graphs.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn search_path(graph: Graph<&str, u32>, from: NodeIndex, to: NodeIndex) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ALPHA` is never used
[INFO] [stdout]  --> src/naive_bayes.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const ALPHA: f64 = 1.; // count added to missing words to avoid probability 0.0
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NaiveBayes` is never constructed
[INFO] [stdout]  --> src/naive_bayes.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct NaiveBayes {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NaiveBayesParameters` is never constructed
[INFO] [stdout]   --> src/naive_bayes.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct NaiveBayesParameters {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Probabilities` is never constructed
[INFO] [stdout]   --> src/naive_bayes.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Probabilities {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `empty` is never used
[INFO] [stdout]   --> src/naive_bayes.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Probabilities {
[INFO] [stdout]    | ------------------ associated function in this implementation
[INFO] [stdout] 22 |     pub fn empty() -> Probabilities {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `train`, `predict`, and `new` are never used
[INFO] [stdout]   --> src/naive_bayes.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl NaiveBayes {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 31 |     pub fn train(&mut self, x: Vec<&str>, y: Vec<u16>) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     pub fn predict(&self, text: &str) -> u16 {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn new() -> NaiveBayes {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/graphs.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         queue.add(neighbor.clone());
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let _ = queue.add(neighbor.clone());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `Command { std: "docker" "inspect" "0685dd76cf73087023acd2dd53f999b352330882a545d706304b2e78ff704f61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0685dd76cf73087023acd2dd53f999b352330882a545d706304b2e78ff704f61", kill_on_drop: false }`
[INFO] [stdout] 0685dd76cf73087023acd2dd53f999b352330882a545d706304b2e78ff704f61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4fc4a5af941a1ec5a106444c26c47566388654e488e5dd03b4c594fcc6900e7
[INFO] running `Command { std: "docker" "start" "-a" "b4fc4a5af941a1ec5a106444c26c47566388654e488e5dd03b4c594fcc6900e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling cracking_the_job_interview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `HashSet` and `LinkedList`
[INFO] [stdout]  --> src/linked_lists.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{LinkedList, HashSet};
[INFO] [stdout]   |                        ^^^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::LinkedList`
[INFO] [stdout]   --> src/linked_lists.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     use std::collections::LinkedList;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Node`, `Tree`, and `traverse_node_in_order`
[INFO] [stdout]   --> src/trees_and_graphs.rs:77:35
[INFO] [stdout]    |
[INFO] [stdout] 77 |     use crate::trees_and_graphs::{Node, Tree, traverse_node_in_order, BinaryTree, BinaryNode};
[INFO] [stdout]    |                                   ^^^^  ^^^^  ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/trees_and_graphs.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     use std::collections::HashMap;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> src/graphs.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `petgraph::visit::FilterNode`
[INFO] [stdout]  --> src/graphs.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use petgraph::visit::FilterNode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `petgraph::data::Element::Node`
[INFO] [stdout]  --> src/graphs.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use petgraph::data::Element::Node;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/naive_bayes.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let mut model = &self.model.as_ref().expect("model not initialized");
[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/naive_bayes.rs:75:21
[INFO] [stdout]    |
[INFO] [stdout] 75 |                 let mut mul = model.probabilities[&label]
[INFO] [stdout]    |                     ----^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/trees_and_graphs.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Node<T> {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `right` is never read
[INFO] [stdout]   --> src/trees_and_graphs.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 8  | struct BinaryNode<T: std::fmt::Display> {
[INFO] [stdout]    |        ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 11 |     pub right: Box<Option<BinaryNode<T>>>
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tree` is never constructed
[INFO] [stdout]   --> src/trees_and_graphs.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Tree<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `leaf_node` are never used
[INFO] [stdout]   --> src/trees_and_graphs.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl<T> Node<T> {
[INFO] [stdout]    | --------------- associated functions in this implementation
[INFO] [stdout] 42 |     pub fn new(data: T, children: Vec<Node<T>>) -> Node<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn leaf_node(data: T) -> Node<T> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/trees_and_graphs.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 57 | impl<T> Tree<T> {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 58 |     pub fn new(root: Node<T>) -> Tree<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `traverse_node_in_order` is never used
[INFO] [stdout]   --> src/trees_and_graphs.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn traverse_node_in_order<T: std::cmp::PartialEq + std::fmt::Display>(node: &Node<T>){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/graphs.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         queue.add(neighbor.clone());
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let _ = queue.add(neighbor.clone());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "b4fc4a5af941a1ec5a106444c26c47566388654e488e5dd03b4c594fcc6900e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4fc4a5af941a1ec5a106444c26c47566388654e488e5dd03b4c594fcc6900e7", kill_on_drop: false }`
[INFO] [stdout] b4fc4a5af941a1ec5a106444c26c47566388654e488e5dd03b4c594fcc6900e7