[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] testing GrossBetruger/CrackingTheJobInterview against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGrossBetruger%2FCrackingTheJobInterview" "/workspace/builds/worker-82/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-82/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GrossBetruger/CrackingTheJobInterview on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-82/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: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-82/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 34460e517fc8233d81807730ff467acf166b9421d9462c699baa074f6ecfb2d8
[INFO] running `Command { std: "docker" "start" "-a" "34460e517fc8233d81807730ff467acf166b9421d9462c699baa074f6ecfb2d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34460e517fc8233d81807730ff467acf166b9421d9462c699baa074f6ecfb2d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34460e517fc8233d81807730ff467acf166b9421d9462c699baa074f6ecfb2d8", kill_on_drop: false }`
[INFO] [stdout] 34460e517fc8233d81807730ff467acf166b9421d9462c699baa074f6ecfb2d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb30e7574ce9832645776ba23c461c3a6ce4fa7f20181cb118bee8c1d1762c9b
[INFO] running `Command { std: "docker" "start" "-a" "fb30e7574ce9832645776ba23c461c3a6ce4fa7f20181cb118bee8c1d1762c9b", kill_on_drop: false }`
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling queues v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling counter v0.5.2
[INFO] [stderr]    Compiling cracking_the_job_interview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `HashSet`, `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 never used: `is_unique`
[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 is never used: `check_permutation`
[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 is never used: `palindrome_permutation`
[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 is never used: `one_away`
[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 is never used: `compare_with_one_change`
[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 is never used: `string_compression`
[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 is never used: `push_counter`
[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 is never used: `rotate_matrix`
[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 is never constructed: `Node`
[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 is never constructed: `BinaryNode`
[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 is never constructed: `Tree`
[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 is never constructed: `BinaryTree`
[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 is never used: `new`
[INFO] [stdout]   --> src/trees_and_graphs.rs:23:12
[INFO] [stdout]    |
[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 is never used: `new`
[INFO] [stdout]   --> src/trees_and_graphs.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn new(root: BinaryNode<T>) -> BinaryTree<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/trees_and_graphs.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn new(data: T, children: Vec<Node<T>>) -> Node<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `leaf_node`
[INFO] [stdout]   --> src/trees_and_graphs.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn leaf_node(data: T) -> Node<T> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/trees_and_graphs.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn new(root: Node<T>) -> Tree<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `traverse_node_in_order`
[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 is never used: `handle_neighbors`
[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 is never used: `search_path`
[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 is never used: `ALPHA`
[INFO] [stdout]  --> src/naive_bayes.rs:5:1
[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 is never constructed: `NaiveBayes`
[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 is never constructed: `NaiveBayesParameters`
[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 is never constructed: `Probabilities`
[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 is never used: `empty`
[INFO] [stdout]   --> src/naive_bayes.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn empty() -> Probabilities {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `train`
[INFO] [stdout]   --> src/naive_bayes.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn train(&mut self, x: Vec<&str>, y: Vec<u16>) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `predict`
[INFO] [stdout]   --> src/naive_bayes.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn predict(&self, text: &str) -> u16 {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/naive_bayes.rs:91:12
[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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 35 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.73s
[INFO] running `Command { std: "docker" "inspect" "fb30e7574ce9832645776ba23c461c3a6ce4fa7f20181cb118bee8c1d1762c9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb30e7574ce9832645776ba23c461c3a6ce4fa7f20181cb118bee8c1d1762c9b", kill_on_drop: false }`
[INFO] [stdout] fb30e7574ce9832645776ba23c461c3a6ce4fa7f20181cb118bee8c1d1762c9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f1d997b20b83267fbdff1b9f5352a8d2ff1fb1e6d1130c728b648ff6c22c2f5
[INFO] running `Command { std: "docker" "start" "-a" "0f1d997b20b83267fbdff1b9f5352a8d2ff1fb1e6d1130c728b648ff6c22c2f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling cracking_the_job_interview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `HashSet`, `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`, `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 is never constructed: `Node`
[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 is never read: `right`
[INFO] [stdout]   --> src/trees_and_graphs.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub right: Box<Option<BinaryNode<T>>>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Tree`
[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 function is never used: `new`
[INFO] [stdout]   --> src/trees_and_graphs.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn new(data: T, children: Vec<Node<T>>) -> Node<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `leaf_node`
[INFO] [stdout]   --> src/trees_and_graphs.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn leaf_node(data: T) -> Node<T> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/trees_and_graphs.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn new(root: Node<T>) -> Tree<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `traverse_node_in_order`
[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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.56s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/cracking_the_job_interview-f60d4bfaebe08f27)
[INFO] running `Command { std: "docker" "inspect" "0f1d997b20b83267fbdff1b9f5352a8d2ff1fb1e6d1130c728b648ff6c22c2f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f1d997b20b83267fbdff1b9f5352a8d2ff1fb1e6d1130c728b648ff6c22c2f5", kill_on_drop: false }`
[INFO] [stdout] 0f1d997b20b83267fbdff1b9f5352a8d2ff1fb1e6d1130c728b648ff6c22c2f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c0c1893596050c1fe3326a22b33420a208a876073959fd4fe5d06419aff30f42
[INFO] running `Command { std: "docker" "start" "-a" "c0c1893596050c1fe3326a22b33420a208a876073959fd4fe5d06419aff30f42", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unused imports: `HashSet`, `LinkedList`
[INFO] [stdout] running 10 tests
[INFO] [stderr]  --> src/linked_lists.rs:1:24
[INFO] [stdout] test linked_lists::tests::new_test ... ok
[INFO] [stderr]   |
[INFO] [stdout] test graphs::tests::graph ... ok
[INFO] [stderr] 1 | use std::collections::{LinkedList, HashSet};
[INFO] [stdout] test tests::test_one_away ... ok
[INFO] [stderr]   |                        ^^^^^^^^^^  ^^^^^^^
[INFO] [stdout] test tests::test_palindrome ... ok
[INFO] [stderr]   |
[INFO] [stdout] test tests::test_string_compression ... ok
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] test tests::test_rotate_matrix ... ok
[INFO] [stderr] 
[INFO] [stdout] test naive_bayes::tests::test_spam_prediction ... ok
[INFO] [stderr] warning: unused import: `std::collections::LinkedList`
[INFO] [stdout] test tests::test_string_permutation ... ok
[INFO] [stderr]   --> src/linked_lists.rs:24:9
[INFO] [stdout] test tests::test_string_uniqueness ... ok
[INFO] [stderr]    |
[INFO] [stdout] test trees_and_graphs::tests::test_tree_construction ... ok
[INFO] [stderr] 24 |     use std::collections::LinkedList;
[INFO] [stdout] 
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: unused imports: `Node`, `Tree`, `traverse_node_in_order`
[INFO] [stderr]   --> src/trees_and_graphs.rs:77:35
[INFO] [stderr]    |
[INFO] [stderr] 77 |     use crate::trees_and_graphs::{Node, Tree, traverse_node_in_order, BinaryTree, BinaryNode};
[INFO] [stderr]    |                                   ^^^^  ^^^^  ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> src/trees_and_graphs.rs:78:9
[INFO] [stderr]    |
[INFO] [stderr] 78 |     use std::collections::HashMap;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/graphs.rs:4:24
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `petgraph::visit::FilterNode`
[INFO] [stderr]  --> src/graphs.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use petgraph::visit::FilterNode;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `petgraph::data::Element::Node`
[INFO] [stderr]  --> src/graphs.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use petgraph::data::Element::Node;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/naive_bayes.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let mut model = &self.model.as_ref().expect("model not initialized");
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/naive_bayes.rs:75:21
[INFO] [stderr]    |
[INFO] [stderr] 75 |                 let mut mul = model.probabilities[&label]
[INFO] [stderr]    |                     ----^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Node`
[INFO] [stderr]  --> src/trees_and_graphs.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Node<T> {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `right`
[INFO] [stderr]   --> src/trees_and_graphs.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub right: Box<Option<BinaryNode<T>>>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Tree`
[INFO] [stderr]   --> src/trees_and_graphs.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | struct Tree<T> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/trees_and_graphs.rs:42:12
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn new(data: T, children: Vec<Node<T>>) -> Node<T> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `leaf_node`
[INFO] [stderr]   --> src/trees_and_graphs.rs:49:12
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn leaf_node(data: T) -> Node<T> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/trees_and_graphs.rs:58:12
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn new(root: Node<T>) -> Tree<T> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `traverse_node_in_order`
[INFO] [stderr]   --> src/trees_and_graphs.rs:65:4
[INFO] [stderr]    |
[INFO] [stderr] 65 | fn traverse_node_in_order<T: std::cmp::PartialEq + std::fmt::Display>(node: &Node<T>){
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/graphs.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         queue.add(neighbor.clone());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `cracking_the_job_interview` (bin "cracking_the_job_interview" test) generated 17 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.27s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/cracking_the_job_interview-f60d4bfaebe08f27)
[INFO] running `Command { std: "docker" "inspect" "c0c1893596050c1fe3326a22b33420a208a876073959fd4fe5d06419aff30f42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0c1893596050c1fe3326a22b33420a208a876073959fd4fe5d06419aff30f42", kill_on_drop: false }`
[INFO] [stdout] c0c1893596050c1fe3326a22b33420a208a876073959fd4fe5d06419aff30f42