[INFO] cloning repository https://github.com/lavrxxx/leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lavrxxx/leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flavrxxx%2Fleetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flavrxxx%2Fleetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c9614453b2ccc8f91a1c5bf02f6f9ed44a8c6f3
[INFO] testing lavrxxx/leetcode against master#61469b682c2b0bf9cebc4622f1859e2bb3b7ebca for pr-91743
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flavrxxx%2Fleetcode" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lavrxxx/leetcode on toolchain 61469b682c2b0bf9cebc4622f1859e2bb3b7ebca
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lavrxxx/leetcode
[INFO] finished tweaking git repo https://github.com/lavrxxx/leetcode
[INFO] tweaked toml for git repo https://github.com/lavrxxx/leetcode written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/lavrxxx/leetcode already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3dced781ffa449ed7518e8e6841cedca158474cb7e0550126e9e7f69db36ec3c
[INFO] running `Command { std: "docker" "start" "-a" "3dced781ffa449ed7518e8e6841cedca158474cb7e0550126e9e7f69db36ec3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3dced781ffa449ed7518e8e6841cedca158474cb7e0550126e9e7f69db36ec3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dced781ffa449ed7518e8e6841cedca158474cb7e0550126e9e7f69db36ec3c", kill_on_drop: false }`
[INFO] [stdout] 3dced781ffa449ed7518e8e6841cedca158474cb7e0550126e9e7f69db36ec3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05385595c081999cdaf203f3b933d1651a15069cda3dade6523097e261b588ae
[INFO] running `Command { std: "docker" "start" "-a" "05385595c081999cdaf203f3b933d1651a15069cda3dade6523097e261b588ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling n_125_valid_palindrome v0.1.0 (/opt/rustwide/workdir/problems/n_125_valid_palindrome)
[INFO] [stderr]    Compiling sum_array v0.1.0 (/opt/rustwide/workdir/algorithms/sum_array)
[INFO] [stderr]    Compiling quicksort v0.1.0 (/opt/rustwide/workdir/algorithms/quicksort)
[INFO] [stderr]    Compiling hash_table v0.1.0 (/opt/rustwide/workdir/algorithms/hash_table)
[INFO] [stderr]    Compiling selection_sort v0.1.0 (/opt/rustwide/workdir/algorithms/selection_sort)
[INFO] [stderr]    Compiling n_9_palindrome_number v0.1.0 (/opt/rustwide/workdir/problems/n_9_palindrome_number)
[INFO] [stderr]    Compiling binary_search v0.1.0 (/opt/rustwide/workdir/algorithms/binary_search)
[INFO] [stderr]    Compiling find_max_size_square_plots v0.1.0 (/opt/rustwide/workdir/algorithms/find_max_size_square_plots)
[INFO] [stdout] warning: function is never used: `find`
[INFO] [stdout]  --> algorithms/find_max_size_square_plots/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn find(height: u128, width: u128) -> u128 {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Type`
[INFO] [stdout]  --> algorithms/sum_array/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | type Type = i128;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sum_recursive_dc`
[INFO] [stdout]  --> algorithms/sum_array/src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn sum_recursive_dc(v: Vec<Type>) -> Type {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sum`
[INFO] [stdout]   --> algorithms/sum_array/src/lib.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn sum(v: Vec<Type>) -> Type {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> problems/n_9_palindrome_number/src/lib.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_palindrome`
[INFO] [stdout]  --> problems/n_9_palindrome_number/src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn is_palindrome(mut x: i32) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Type`
[INFO] [stdout]  --> algorithms/selection_sort/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | type Type = u128;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `selection_sort`
[INFO] [stdout]  --> algorithms/selection_sort/src/lib.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn selection_sort(mut v: Vec<Type>, asc: bool) -> Vec<Type> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_extremum`
[INFO] [stdout]   --> algorithms/selection_sort/src/lib.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn find_extremum(v: Vec<Type>, asc: bool) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> problems/n_125_valid_palindrome/src/lib.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_palindrome`
[INFO] [stdout]  --> problems/n_125_valid_palindrome/src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn is_palindrome(str: String) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check_palindrome`
[INFO] [stdout]   --> problems/n_125_valid_palindrome/src/lib.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn check_palindrome(str: &str) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `binary_search`
[INFO] [stdout]  --> algorithms/binary_search/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn binary_search(v: Vec<u128>, target: u128) -> Option<usize> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `binary_search_recursive`
[INFO] [stdout]   --> algorithms/binary_search/src/lib.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn binary_search_recursive(v: Vec<u128>, target: u128, start: usize, stop: usize) -> Option<usize> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SIZE`
[INFO] [stdout]  --> algorithms/hash_table/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const SIZE: usize = 10;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `HashFn`
[INFO] [stdout]  --> algorithms/hash_table/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | type HashFn = Box<dyn Fn(&str) -> usize>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `key`
[INFO] [stdout]  --> algorithms/hash_table/src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     key: String,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Value` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> algorithms/hash_table/src/lib.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     data: DataType,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Value` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout] 7  | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn new(key: &str, data: DataType) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `HashTable`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct HashTable {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn new(hash_fn: HashFn) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn insert(&mut self, key: &str, data: DataType) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn get(&self, key: &str) -> Option<DataType> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn delete(&mut self, key: &str) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `load_factor`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn load_factor(&self) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hash_fn_mod`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:84:4
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn hash_fn_mod(data: &str) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quicksort`
[INFO] [stdout]   --> algorithms/quicksort/src/lib.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn quicksort(mut v: Vec<u128>, asc: bool, partition: Box<dyn Partition>) -> Vec<u128> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quicksort_recursive`
[INFO] [stdout]    --> algorithms/quicksort/src/lib.rs:129:4
[INFO] [stdout]     |
[INFO] [stdout] 129 | fn quicksort_recursive(mut v: Vec<u128>, asc: bool) -> Vec<u128> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `choose_sub_array`
[INFO] [stdout]    --> algorithms/quicksort/src/lib.rs:159:4
[INFO] [stdout]     |
[INFO] [stdout] 159 | fn choose_sub_array(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `swap`
[INFO] [stdout]    --> algorithms/quicksort/src/lib.rs:187:4
[INFO] [stdout]     |
[INFO] [stdout] 187 | fn swap(v: &mut Vec<u128>, i1: usize, i2: usize, asc: bool) {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling graph v0.1.0 (/opt/rustwide/workdir/algorithms/graph)
[INFO] [stdout] warning: enum is never used: `ActResult`
[INFO] [stdout]   --> algorithms/graph/src/lib.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum ActResult {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> algorithms/graph/src/lib.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn new(name: NodeName, data: T) -> Link<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_edge`
[INFO] [stdout]   --> algorithms/graph/src/lib.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn add_edge(&mut self, node: Link<T>, weight: Weight) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `traverse_depth_first`
[INFO] [stdout]   --> algorithms/graph/src/lib.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn traverse_depth_first<F>(&self, act: &F, seen: &mut HashSet<NodeName>)
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `traverse_breadth_first`
[INFO] [stdout]   --> algorithms/graph/src/lib.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn traverse_breadth_first<F>(&self, act: &F, seen: &mut HashSet<NodeName>)
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `breadth_first_search`
[INFO] [stdout]   --> algorithms/graph/src/lib.rs:92:4
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn breadth_first_search<T>(root: Link<T>, target: &str) -> Option<T>
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_node`
[INFO] [stdout]    --> algorithms/graph/src/lib.rs:110:4
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn print_node<T>(node: &Node<T>) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_edge`
[INFO] [stdout]    --> algorithms/graph/src/lib.rs:121:4
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn print_edge<T>(edge: &Edge<T>) -> ActResult {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `depth_first_topological_sort`
[INFO] [stdout]    --> algorithms/graph/src/lib.rs:135:4
[INFO] [stdout]     |
[INFO] [stdout] 135 | fn depth_first_topological_sort<T>(root: Link<T>) -> VecDeque<Link<T>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `visit`
[INFO] [stdout]    --> algorithms/graph/src/lib.rs:160:4
[INFO] [stdout]     |
[INFO] [stdout] 160 | fn visit<T>(
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dijkstra`
[INFO] [stdout]    --> algorithms/graph/src/lib.rs:188:4
[INFO] [stdout]     |
[INFO] [stdout] 188 | fn dijkstra<T>(root: Link<T>) -> (HashMap<NodeName, Weight>, HashMap<NodeName, Option<Link<T>>>)
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_closest_node`
[INFO] [stdout]    --> algorithms/graph/src/lib.rs:231:4
[INFO] [stdout]     |
[INFO] [stdout] 231 | fn find_closest_node<T>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bellman_ford`
[INFO] [stdout]    --> algorithms/graph/src/lib.rs:249:4
[INFO] [stdout]     |
[INFO] [stdout] 249 | fn bellman_ford<T>(root: Link<T>) -> (HashMap<NodeName, Weight>, HashMap<NodeName, Option<Link<T>>>)
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling greedy v0.1.0 (/opt/rustwide/workdir/algorithms/greedy)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> algorithms/greedy/src/lib.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn new(name: &str, start: &str, stop: &str) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `schedule_problem`
[INFO] [stdout]   --> algorithms/greedy/src/lib.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn schedule_problem(classes: Vec<Class>) -> Vec<Class> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_covering_problem`
[INFO] [stdout]   --> algorithms/greedy/src/lib.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn set_covering_problem<'a>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `salesperson_problem`
[INFO] [stdout]   --> algorithms/greedy/src/lib.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn salesperson_problem(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.23s
[INFO] running `Command { std: "docker" "inspect" "05385595c081999cdaf203f3b933d1651a15069cda3dade6523097e261b588ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05385595c081999cdaf203f3b933d1651a15069cda3dade6523097e261b588ae", kill_on_drop: false }`
[INFO] [stdout] 05385595c081999cdaf203f3b933d1651a15069cda3dade6523097e261b588ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25b7b7f013df91e6626e83d1b41d6e1aa41fcff66c771ea5e187734204cbfd61
[INFO] running `Command { std: "docker" "start" "-a" "25b7b7f013df91e6626e83d1b41d6e1aa41fcff66c771ea5e187734204cbfd61", kill_on_drop: false }`
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> problems/n_125_valid_palindrome/src/lib.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_palindrome`
[INFO] [stdout]  --> problems/n_125_valid_palindrome/src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn is_palindrome(str: String) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check_palindrome`
[INFO] [stdout]   --> problems/n_125_valid_palindrome/src/lib.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn check_palindrome(str: &str) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `binary_search`
[INFO] [stdout]  --> algorithms/binary_search/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn binary_search(v: Vec<u128>, target: u128) -> Option<usize> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `binary_search_recursive`
[INFO] [stdout]   --> algorithms/binary_search/src/lib.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn binary_search_recursive(v: Vec<u128>, target: u128, start: usize, stop: usize) -> Option<usize> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> problems/n_9_palindrome_number/src/lib.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_palindrome`
[INFO] [stdout]  --> problems/n_9_palindrome_number/src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn is_palindrome(mut x: i32) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quicksort`
[INFO] [stdout]   --> algorithms/quicksort/src/lib.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn quicksort(mut v: Vec<u128>, asc: bool, partition: Box<dyn Partition>) -> Vec<u128> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quicksort_recursive`
[INFO] [stdout]    --> algorithms/quicksort/src/lib.rs:129:4
[INFO] [stdout]     |
[INFO] [stdout] 129 | fn quicksort_recursive(mut v: Vec<u128>, asc: bool) -> Vec<u128> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `choose_sub_array`
[INFO] [stdout]    --> algorithms/quicksort/src/lib.rs:159:4
[INFO] [stdout]     |
[INFO] [stdout] 159 | fn choose_sub_array(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `swap`
[INFO] [stdout]    --> algorithms/quicksort/src/lib.rs:187:4
[INFO] [stdout]     |
[INFO] [stdout] 187 | fn swap(v: &mut Vec<u128>, i1: usize, i2: usize, asc: bool) {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SIZE`
[INFO] [stdout]  --> algorithms/hash_table/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const SIZE: usize = 10;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `HashFn`
[INFO] [stdout]  --> algorithms/hash_table/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | type HashFn = Box<dyn Fn(&str) -> usize>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `key`
[INFO] [stdout]  --> algorithms/hash_table/src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     key: String,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Value` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> algorithms/hash_table/src/lib.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     data: DataType,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Value` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout] 7  | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn new(key: &str, data: DataType) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `HashTable`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct HashTable {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn new(hash_fn: HashFn) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn insert(&mut self, key: &str, data: DataType) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn get(&self, key: &str) -> Option<DataType> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn delete(&mut self, key: &str) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `load_factor`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn load_factor(&self) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hash_fn_mod`
[INFO] [stdout]   --> algorithms/hash_table/src/lib.rs:84:4
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn hash_fn_mod(data: &str) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Type`
[INFO] [stdout]  --> algorithms/selection_sort/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | type Type = u128;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `selection_sort`
[INFO] [stdout]  --> algorithms/selection_sort/src/lib.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn selection_sort(mut v: Vec<Type>, asc: bool) -> Vec<Type> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_extremum`
[INFO] [stdout]   --> algorithms/selection_sort/src/lib.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn find_extremum(v: Vec<Type>, asc: bool) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Type`
[INFO] [stdout]  --> algorithms/sum_array/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | type Type = i128;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sum_recursive_dc`
[INFO] [stdout]  --> algorithms/sum_array/src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn sum_recursive_dc(v: Vec<Type>) -> Type {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sum`
[INFO] [stdout]   --> algorithms/sum_array/src/lib.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn sum(v: Vec<Type>) -> Type {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find`
[INFO] [stdout]  --> algorithms/find_max_size_square_plots/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn find(height: u128, width: u128) -> u128 {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quicksort v0.1.0 (/opt/rustwide/workdir/algorithms/quicksort)
[INFO] [stderr]    Compiling find_max_size_square_plots v0.1.0 (/opt/rustwide/workdir/algorithms/find_max_size_square_plots)
[INFO] [stderr]    Compiling binary_search v0.1.0 (/opt/rustwide/workdir/algorithms/binary_search)
[INFO] [stderr]    Compiling sum_array v0.1.0 (/opt/rustwide/workdir/algorithms/sum_array)
[INFO] [stderr]    Compiling n_9_palindrome_number v0.1.0 (/opt/rustwide/workdir/problems/n_9_palindrome_number)
[INFO] [stderr]    Compiling selection_sort v0.1.0 (/opt/rustwide/workdir/algorithms/selection_sort)
[INFO] [stderr]    Compiling hash_table v0.1.0 (/opt/rustwide/workdir/algorithms/hash_table)
[INFO] [stderr]    Compiling n_125_valid_palindrome v0.1.0 (/opt/rustwide/workdir/problems/n_125_valid_palindrome)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> algorithms/greedy/src/lib.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn new(name: &str, start: &str, stop: &str) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `schedule_problem`
[INFO] [stdout]   --> algorithms/greedy/src/lib.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn schedule_problem(classes: Vec<Class>) -> Vec<Class> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_covering_problem`
[INFO] [stdout]   --> algorithms/greedy/src/lib.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn set_covering_problem<'a>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `salesperson_problem`
[INFO] [stdout]   --> algorithms/greedy/src/lib.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn salesperson_problem(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ActResult`
[INFO] [stdout]   --> algorithms/graph/src/lib.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum ActResult {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> algorithms/graph/src/lib.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn new(name: NodeName, data: T) -> Link<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_edge`
[INFO] [stdout]   --> algorithms/graph/src/lib.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn add_edge(&mut self, node: Link<T>, weight: Weight) -> &mut Self {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `traverse_depth_first`
[INFO] [stdout]   --> algorithms/graph/src/lib.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn traverse_depth_first<F>(&self, act: &F, seen: &mut HashSet<NodeName>)
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `traverse_breadth_first`
[INFO] [stdout]   --> algorithms/graph/src/lib.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn traverse_breadth_first<F>(&self, act: &F, seen: &mut HashSet<NodeName>)
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `breadth_first_search`
[INFO] [stdout]   --> algorithms/graph/src/lib.rs:92:4
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn breadth_first_search<T>(root: Link<T>, target: &str) -> Option<T>
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_node`
[INFO] [stdout]    --> algorithms/graph/src/lib.rs:110:4
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn print_node<T>(node: &Node<T>) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_edge`
[INFO] [stdout]    --> algorithms/graph/src/lib.rs:121:4
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn print_edge<T>(edge: &Edge<T>) -> ActResult {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling graph v0.1.0 (/opt/rustwide/workdir/algorithms/graph)
[INFO] [stdout] warning: function is never used: `depth_first_topological_sort`
[INFO] [stdout]    --> algorithms/graph/src/lib.rs:135:4
[INFO] [stdout]     |
[INFO] [stdout] 135 | fn depth_first_topological_sort<T>(root: Link<T>) -> VecDeque<Link<T>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling greedy v0.1.0 (/opt/rustwide/workdir/algorithms/greedy)
[INFO] [stdout] warning: function is never used: `visit`
[INFO] [stdout]    --> algorithms/graph/src/lib.rs:160:4
[INFO] [stdout]     |
[INFO] [stdout] 160 | fn visit<T>(
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dijkstra`
[INFO] [stdout]    --> algorithms/graph/src/lib.rs:188:4
[INFO] [stdout]     |
[INFO] [stdout] 188 | fn dijkstra<T>(root: Link<T>) -> (HashMap<NodeName, Weight>, HashMap<NodeName, Option<Link<T>>>)
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_closest_node`
[INFO] [stdout]    --> algorithms/graph/src/lib.rs:231:4
[INFO] [stdout]     |
[INFO] [stdout] 231 | fn find_closest_node<T>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bellman_ford`
[INFO] [stdout]    --> algorithms/graph/src/lib.rs:249:4
[INFO] [stdout]     |
[INFO] [stdout] 249 | fn bellman_ford<T>(root: Link<T>) -> (HashMap<NodeName, Weight>, HashMap<NodeName, Option<Link<T>>>)
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/binary_search-8d940976bed97aab)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/find_max_size_square_plots-fb18dc71861a2c36)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/graph-5baf075123db2544)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/greedy-e8df638b83d8a066)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/hash_table-292fd1dde8992dc5)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/n_125_valid_palindrome-57be7ce7c4b55d0f)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/n_9_palindrome_number-cc0a86aca998e3d4)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/quicksort-e72744b2c8c6eeb6)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/selection_sort-db7fa65864b17df4)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/sum_array-0139478c05bc4c07)
[INFO] running `Command { std: "docker" "inspect" "25b7b7f013df91e6626e83d1b41d6e1aa41fcff66c771ea5e187734204cbfd61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25b7b7f013df91e6626e83d1b41d6e1aa41fcff66c771ea5e187734204cbfd61", kill_on_drop: false }`
[INFO] [stdout] 25b7b7f013df91e6626e83d1b41d6e1aa41fcff66c771ea5e187734204cbfd61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] aaacd63292756207b334cadf21853cb3751615fccdcc3681a4ec57560874daf2
[INFO] running `Command { std: "docker" "start" "-a" "aaacd63292756207b334cadf21853cb3751615fccdcc3681a4ec57560874daf2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: function is never used: `quicksort`
[INFO] [stderr]   --> algorithms/quicksort/src/lib.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn quicksort(mut v: Vec<u128>, asc: bool, partition: Box<dyn Partition>) -> Vec<u128> {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `quicksort_recursive`
[INFO] [stderr]    --> algorithms/quicksort/src/lib.rs:129:4
[INFO] [stderr]     |
[INFO] [stderr] 129 | fn quicksort_recursive(mut v: Vec<u128>, asc: bool) -> Vec<u128> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `choose_sub_array`
[INFO] [stderr]    --> algorithms/quicksort/src/lib.rs:159:4
[INFO] [stderr]     |
[INFO] [stderr] 159 | fn choose_sub_array(
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `swap`
[INFO] [stderr]    --> algorithms/quicksort/src/lib.rs:187:4
[INFO] [stderr]     |
[INFO] [stderr] 187 | fn swap(v: &mut Vec<u128>, i1: usize, i2: usize, asc: bool) {
[INFO] [stderr]     |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `quicksort` (lib) generated 4 warnings
[INFO] [stderr] warning: type alias is never used: `Type`
[INFO] [stderr]  --> algorithms/sum_array/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | type Type = i128;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_recursive_dc`
[INFO] [stderr]  --> algorithms/sum_array/src/lib.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn sum_recursive_dc(v: Vec<Type>) -> Type {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum`
[INFO] [stderr]   --> algorithms/sum_array/src/lib.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn sum(v: Vec<Type>) -> Type {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> problems/n_125_valid_palindrome/src/lib.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Solution {}
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_palindrome`
[INFO] [stderr]  --> problems/n_125_valid_palindrome/src/lib.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub fn is_palindrome(str: String) -> bool {
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `check_palindrome`
[INFO] [stderr]   --> problems/n_125_valid_palindrome/src/lib.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn check_palindrome(str: &str) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `SIZE`
[INFO] [stderr]  --> algorithms/hash_table/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | const SIZE: usize = 10;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `HashFn`
[INFO] [stderr]  --> algorithms/hash_table/src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | type HashFn = Box<dyn Fn(&str) -> usize>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `key`
[INFO] [stderr]  --> algorithms/hash_table/src/lib.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     key: String,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: `Value` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]  --> algorithms/hash_table/src/lib.rs:7:10
[INFO] [stderr]   |
[INFO] [stderr] 7 | #[derive(Debug)]
[INFO] [stderr]   |          ^^^^^
[INFO] [stderr]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `data`
[INFO] [stderr]   --> algorithms/hash_table/src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     data: DataType,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Value` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> algorithms/hash_table/src/lib.rs:7:10
[INFO] [stderr]    |
[INFO] [stderr] 7  | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> algorithms/hash_table/src/lib.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn new(key: &str, data: DataType) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `HashTable`
[INFO] [stderr]   --> algorithms/hash_table/src/lib.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 | struct HashTable {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> algorithms/hash_table/src/lib.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn new(hash_fn: HashFn) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert`
[INFO] [stderr]   --> algorithms/hash_table/src/lib.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn insert(&mut self, key: &str, data: DataType) {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get`
[INFO] [stderr]   --> algorithms/hash_table/src/lib.rs:50:8
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn get(&self, key: &str) -> Option<DataType> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `delete`
[INFO] [stderr]   --> algorithms/hash_table/src/lib.rs:61:8
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn delete(&mut self, key: &str) {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `load_factor`
[INFO] [stderr]   --> algorithms/hash_table/src/lib.rs:72:8
[INFO] [stderr]    |
[INFO] [stderr] 72 |     fn load_factor(&self) -> f64 {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hash_fn_mod`
[INFO] [stderr]   --> algorithms/hash_table/src/lib.rs:84:4
[INFO] [stderr]    |
[INFO] [stderr] 84 | fn hash_fn_mod(data: &str) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `binary_search`
[INFO] [stderr]  --> algorithms/binary_search/src/lib.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn binary_search(v: Vec<u128>, target: u128) -> Option<usize> {
[INFO] [stderr]   |    ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `binary_search_recursive`
[INFO] [stderr]   --> algorithms/binary_search/src/lib.rs:24:4
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn binary_search_recursive(v: Vec<u128>, target: u128, start: usize, stop: usize) -> Option<usize> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Type`
[INFO] [stderr]  --> algorithms/selection_sort/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | type Type = u128;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `selection_sort`
[INFO] [stderr]  --> algorithms/selection_sort/src/lib.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn selection_sort(mut v: Vec<Type>, asc: bool) -> Vec<Type> {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_extremum`
[INFO] [stderr]   --> algorithms/selection_sort/src/lib.rs:16:4
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn find_extremum(v: Vec<Type>, asc: bool) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find`
[INFO] [stderr]  --> algorithms/find_max_size_square_plots/src/lib.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn find(height: u128, width: u128) -> u128 {
[INFO] [stderr]   |    ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> problems/n_9_palindrome_number/src/lib.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution {}
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_palindrome`
[INFO] [stderr]  --> problems/n_9_palindrome_number/src/lib.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn is_palindrome(mut x: i32) -> bool {
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `sum_array` (lib) generated 3 warnings
[INFO] [stderr] warning: `n_125_valid_palindrome` (lib) generated 3 warnings
[INFO] [stderr] warning: `hash_table` (lib) generated 12 warnings
[INFO] [stderr] warning: `binary_search` (lib) generated 2 warnings
[INFO] [stderr] warning: `selection_sort` (lib) generated 3 warnings
[INFO] [stderr] warning: `find_max_size_square_plots` (lib) generated 1 warning
[INFO] [stderr] warning: `n_9_palindrome_number` (lib) generated 2 warnings
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> algorithms/greedy/src/lib.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn new(name: &str, start: &str, stop: &str) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `schedule_problem`
[INFO] [stderr]   --> algorithms/greedy/src/lib.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn schedule_problem(classes: Vec<Class>) -> Vec<Class> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_covering_problem`
[INFO] [stderr]   --> algorithms/greedy/src/lib.rs:46:4
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn set_covering_problem<'a>(
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `salesperson_problem`
[INFO] [stderr]   --> algorithms/greedy/src/lib.rs:69:4
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn salesperson_problem(
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `greedy` (lib) generated 4 warnings
[INFO] [stderr] warning: enum is never used: `ActResult`
[INFO] [stderr]   --> algorithms/graph/src/lib.rs:11:6
[INFO] [stderr]    |
[INFO] [stderr] 11 | enum ActResult {
[INFO] [stderr]    |      ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> algorithms/graph/src/lib.rs:30:8
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn new(name: NodeName, data: T) -> Link<T> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add_edge`
[INFO] [stderr]   --> algorithms/graph/src/lib.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn add_edge(&mut self, node: Link<T>, weight: Weight) -> &mut Self {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `traverse_depth_first`
[INFO] [stderr]   --> algorithms/graph/src/lib.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn traverse_depth_first<F>(&self, act: &F, seen: &mut HashSet<NodeName>)
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `traverse_breadth_first`
[INFO] [stderr]   --> algorithms/graph/src/lib.rs:57:8
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn traverse_breadth_first<F>(&self, act: &F, seen: &mut HashSet<NodeName>)
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `breadth_first_search`
[INFO] [stderr]   --> algorithms/graph/src/lib.rs:92:4
[INFO] [stderr]    |
[INFO] [stderr] 92 | fn breadth_first_search<T>(root: Link<T>, target: &str) -> Option<T>
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_node`
[INFO] [stderr]    --> algorithms/graph/src/lib.rs:110:4
[INFO] [stderr]     |
[INFO] [stderr] 110 | fn print_node<T>(node: &Node<T>) {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_edge`
[INFO] [stderr]    --> algorithms/graph/src/lib.rs:121:4
[INFO] [stderr]     |
[INFO] [stderr] 121 | fn print_edge<T>(edge: &Edge<T>) -> ActResult {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `depth_first_topological_sort`
[INFO] [stderr]    --> algorithms/graph/src/lib.rs:135:4
[INFO] [stderr]     |
[INFO] [stderr] 135 | fn depth_first_topological_sort<T>(root: Link<T>) -> VecDeque<Link<T>> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `visit`
[INFO] [stderr]    --> algorithms/graph/src/lib.rs:160:4
[INFO] [stderr]     |
[INFO] [stderr] 160 | fn visit<T>(
[INFO] [stderr]     |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dijkstra`
[INFO] [stderr]    --> algorithms/graph/src/lib.rs:188:4
[INFO] [stderr]     |
[INFO] [stderr] 188 | fn dijkstra<T>(root: Link<T>) -> (HashMap<NodeName, Weight>, HashMap<NodeName, Option<Link<T>>>)
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_closest_node`
[INFO] [stderr]    --> algorithms/graph/src/lib.rs:231:4
[INFO] [stderr]     |
[INFO] [stderr] 231 | fn find_closest_node<T>(
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bellman_ford`
[INFO] [stderr]    --> algorithms/graph/src/lib.rs:249:4
[INFO] [stderr]     |
[INFO] [stderr] 249 | fn bellman_ford<T>(root: Link<T>) -> (HashMap<NodeName, Weight>, HashMap<NodeName, Option<Link<T>>>)
[INFO] [stderr]     |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `graph` (lib) generated 13 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/binary_search-8d940976bed97aab)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_binary_search ... ok
[INFO] [stdout] test tests::test_binary_search_recursive ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/find_max_size_square_plots-fb18dc71861a2c36)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/graph-5baf075123db2544)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::test_breadth_first_search ... ok
[INFO] [stdout] test tests::test_breadth_first_traverse ... ok
[INFO] [stdout] test tests::test_depth_first_traverse ... ok
[INFO] [stdout] test tests::test_breadth_first_topology_sort ... ok
[INFO] [stdout] test tests::test_bellman_ford ... ok
[INFO] [stdout] test tests::test_dijkstra ... ok
[INFO] [stdout] test tests::test_rand ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/greedy-e8df638b83d8a066)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::test_covering_problem ... ok
[INFO] [stdout] test tests::test_schedule_problem ... ok
[INFO] [stdout] test tests::test_salesperson_problem ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/hash_table-292fd1dde8992dc5)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_mod_ver1 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/n_125_valid_palindrome-57be7ce7c4b55d0f)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/n_9_palindrome_number-cc0a86aca998e3d4)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/quicksort-e72744b2c8c6eeb6)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::test_quicksort_lomuto ... ok
[INFO] [stdout] test tests::test_quicksort_hoare ... ok
[INFO] [stdout] test tests::test_quicksort_recursive ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/selection_sort-db7fa65864b17df4)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sum_array-0139478c05bc4c07)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_sum ... ok
[INFO] [stdout] test tests::test_sum_recursive_dc ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests binary_search
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests find_max_size_square_plots
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests graph
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests greedy
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests hash_table
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests n_125_valid_palindrome
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests n_9_palindrome_number
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests quicksort
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests selection_sort
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sum_array
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "aaacd63292756207b334cadf21853cb3751615fccdcc3681a4ec57560874daf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aaacd63292756207b334cadf21853cb3751615fccdcc3681a4ec57560874daf2", kill_on_drop: false }`
[INFO] [stdout] aaacd63292756207b334cadf21853cb3751615fccdcc3681a4ec57560874daf2