[INFO] cloning repository https://github.com/fernandoocampo/rust-katas
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fernandoocampo/rust-katas" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffernandoocampo%2Frust-katas", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffernandoocampo%2Frust-katas'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2a10410128a8083527b92a0299808c8948040df
[INFO] checking fernandoocampo/rust-katas against master#a42d94ebb883116f2867cbe3016d9bde9ca6d3f7 for pr-117593
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffernandoocampo%2Frust-katas" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fernandoocampo/rust-katas on toolchain a42d94ebb883116f2867cbe3016d9bde9ca6d3f7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a42d94ebb883116f2867cbe3016d9bde9ca6d3f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fernandoocampo/rust-katas
[INFO] finished tweaking git repo https://github.com/fernandoocampo/rust-katas
[INFO] tweaked toml for git repo https://github.com/fernandoocampo/rust-katas written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/fernandoocampo/rust-katas already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a42d94ebb883116f2867cbe3016d9bde9ca6d3f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking fernandoocampo/rust-katas against try#031b389f0c31c0f91c9464d26313ae513dbe8d36 for pr-117593
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffernandoocampo%2Frust-katas" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fernandoocampo/rust-katas on toolchain 031b389f0c31c0f91c9464d26313ae513dbe8d36
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fernandoocampo/rust-katas
[INFO] finished tweaking git repo https://github.com/fernandoocampo/rust-katas
[INFO] tweaked toml for git repo https://github.com/fernandoocampo/rust-katas written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/fernandoocampo/rust-katas already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking fernandoocampo/rust-katas against try#031b389f0c31c0f91c9464d26313ae513dbe8d36 for pr-117593
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffernandoocampo%2Frust-katas" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fernandoocampo/rust-katas on toolchain 031b389f0c31c0f91c9464d26313ae513dbe8d36
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fernandoocampo/rust-katas
[INFO] finished tweaking git repo https://github.com/fernandoocampo/rust-katas
[INFO] tweaked toml for git repo https://github.com/fernandoocampo/rust-katas written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/fernandoocampo/rust-katas already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 137feb70f228f5f5fdea2ddd15fcf2adf24843eaab2aff94bfe921628dedf9d7
[INFO] running `Command { std: "docker" "start" "-a" "137feb70f228f5f5fdea2ddd15fcf2adf24843eaab2aff94bfe921628dedf9d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "137feb70f228f5f5fdea2ddd15fcf2adf24843eaab2aff94bfe921628dedf9d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "137feb70f228f5f5fdea2ddd15fcf2adf24843eaab2aff94bfe921628dedf9d7", kill_on_drop: false }`
[INFO] [stdout] 137feb70f228f5f5fdea2ddd15fcf2adf24843eaab2aff94bfe921628dedf9d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3740ff1fc9436ab8c4414c9606d8dc09235daa2bfe6c1e636ed00d48849956d
[INFO] running `Command { std: "docker" "start" "-a" "a3740ff1fc9436ab8c4414c9606d8dc09235daa2bfe6c1e636ed00d48849956d", kill_on_drop: false }`
[INFO] [stderr]     Checking string-builder v0.2.0
[INFO] [stderr]     Checking rust-katas v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `two_sum` is never used
[INFO] [stdout]  --> src/i_two_sum/two_sum.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `two_sum_b` is never used
[INFO] [stdout]   --> src/i_two_sum/two_sum.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn two_sum_b(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `two_sum_c` is never used
[INFO] [stdout]   --> src/i_two_sum/two_sum.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn two_sum_c(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `new_with_val` are never used
[INFO] [stdout]   --> src/ii_add_two_numbers/add_two_numbers.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl ListNode {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 11 |     #[inline]
[INFO] [stdout] 12 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn new_with_val(val: i32) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_number_from_list` is never used
[INFO] [stdout]   --> src/ii_add_two_numbers/add_two_numbers.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn get_number_from_list(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_two_numbers` is never used
[INFO] [stdout]   --> src/ii_add_two_numbers/add_two_numbers.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn add_two_numbers(l1: Option<Box<ListNode>>, l2: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_longest_substring` is never used
[INFO] [stdout]  --> src/iii_longest_string/longest_string.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_longest_substring_i` is never used
[INFO] [stdout]   --> src/iii_longest_string/longest_string.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn length_of_longest_substring_i(s: String) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_longest_substring_ii` is never used
[INFO] [stdout]   --> src/iii_longest_string/longest_string.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn length_of_longest_substring_ii(s: String) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `median_two_arrays` is never used
[INFO] [stdout]  --> src/iv_median_two_arr/median_two_arrays.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn median_two_arrays(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_and_order` is never used
[INFO] [stdout]  --> src/iv_median_two_arr/median_two_arrays.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn merge_and_order(mut nums1: Vec<i32>, mut nums2: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_median` is never used
[INFO] [stdout]   --> src/iv_median_two_arr/median_two_arrays.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn calculate_median(nums: Vec<i32>) -> f64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_median_sorted_arrays_ii` is never used
[INFO] [stdout]   --> src/iv_median_two_arr/median_two_arrays.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn find_median_sorted_arrays_ii(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value` and `next` are never read
[INFO] [stdout]  --> src/lists/linked_list.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Node<T: Clone> {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 3 |     value: T,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 4 |     next: Option<Box<Node<T>>>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LinkedList` is never constructed
[INFO] [stdout]  --> src/lists/linked_list.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct LinkedList<T: Clone> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `create_box`, `push`, `push_right`, and `collect` are never used
[INFO] [stdout]   --> src/lists/linked_list.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<T: Clone> LinkedList<T> {
[INFO] [stdout]    | ---------------------------- associated items in this implementation
[INFO] [stdout] 12 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn create_box(&self, value: T) -> Box<Node<T>> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn push(&mut self, data: T) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn push_right(&mut self, data: T) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn collect(&self) -> Vec<T> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `new_with_val`, `create_box`, `push_left`, and `collect` are never used
[INFO] [stdout]   --> src/lists/linked_node.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl<'a> ListNode<'a, i32> {
[INFO] [stdout]    | -------------------------- associated items in this implementation
[INFO] [stdout] 15 |     #[inline]
[INFO] [stdout] 16 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn new_with_val(val: i32) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn create_box(&self, x: i32) -> Box<ListNode<'a, i32>> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn push_left(&mut self, node: &'a mut Box<ListNode<'a, i32>>) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn collect(&self) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `balance` is never used
[INFO] [stdout]  --> src/o_balance/parentheses.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn balance(value: &str) -> bool {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_palindrome` is never used
[INFO] [stdout]  --> src/v_palindromic/palindromic.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn longest_palindrome(s: String) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_palindrome_rec` is never used
[INFO] [stdout]   --> src/v_palindromic/palindromic.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn longest_palindrome_rec(s: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_palindromic` is never used
[INFO] [stdout]   --> src/v_palindromic/palindromic.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn is_palindromic(s: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iterate_word` is never used
[INFO] [stdout]   --> src/v_palindromic/palindromic.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn iterate_word<'a>(s: &'a str, mut longest: &'a str) -> &'a str {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_longest_palindrome` is never used
[INFO] [stdout]   --> src/v_palindromic/palindromic.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn find_longest_palindrome<'a>(s: &'a str, mut longest: &'a str) -> &'a str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_string` is never used
[INFO] [stdout]  --> src/reversals/reverse.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn reverse_string(value: &str) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_shrek` is never used
[INFO] [stdout]   --> src/reversals/reverse.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn print_shrek() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_words` is never used
[INFO] [stdout]   --> src/reversals/reverse.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn reverse_words(str: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_words_clever` is never used
[INFO] [stdout]   --> src/reversals/reverse.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn reverse_words_clever(str: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_letters` is never used
[INFO] [stdout]   --> src/reversals/reverse.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn reverse_letters(s: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_letters_two` is never used
[INFO] [stdout]   --> src/reversals/reverse.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn reverse_letters_two(s: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `spin_words` is never used
[INFO] [stdout]   --> src/reversals/reverse.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn spin_words(words: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VOWELS` is never used
[INFO] [stdout]  --> src/counts/count.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | const VOWELS: &str = "aeiou";
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_vowels` is never used
[INFO] [stdout]  --> src/counts/count.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn count_vowels(value: &str) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello` is never used
[INFO] [stdout]  --> src/greetings/basic.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn hello(name: &str) -> String {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_world` is never used
[INFO] [stdout]  --> src/greetings/basic.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn hello_world() -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `between` is never used
[INFO] [stdout]  --> src/integers/between.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn between(a: i16, b: i16) -> Vec<i16> {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `between_two` is never used
[INFO] [stdout]   --> src/integers/between.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn between_two(a: i16, b: i16) -> Vec<i16> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `between_three` is never used
[INFO] [stdout]   --> src/integers/between.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn between_three(a: i16, b: i16) -> Vec<i16> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fake_bin` is never used
[INFO] [stdout]   --> src/integers/between.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn fake_bin(s: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_positives_sum_negatives` is never used
[INFO] [stdout]  --> src/integers/count.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn count_positives_sum_negatives(input: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_positives_sum_negatives_two` is never used
[INFO] [stdout]   --> src/integers/count.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn count_positives_sum_negatives_two(input: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_fibos` is never used
[INFO] [stdout]  --> src/integers/fibbo.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn make_fibos(n: usize) -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_i32` is never used
[INFO] [stdout]  --> src/integers/sum.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn sum_i32(i: i32, j: i32) -> i32 {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_i8` is never used
[INFO] [stdout]  --> src/integers/sum.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn sum_i8(i: i8, j: i8) -> i8 {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `positive_sum` is never used
[INFO] [stdout]  --> src/integers/sum.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn positive_sum(slice: &[i32]) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square_sum` is never used
[INFO] [stdout]   --> src/integers/sum.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn square_sum(vec: Vec<i32>) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Solve` is never used
[INFO] [stdout]  --> src/integers/remove.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn Solve(data: &[i32]) -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Solve_with_deque` is never used
[INFO] [stdout]   --> src/integers/remove.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn Solve_with_deque(data: &[i32]) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `even_or_odd` is never used
[INFO] [stdout]  --> src/integers/odd_even.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn even_or_odd(number: i32) -> &'static str {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `even_or_odd_smart` is never used
[INFO] [stdout]  --> src/integers/odd_even.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn even_or_odd_smart(number: i32) -> &'static str {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_upper_case` is never used
[INFO] [stdout]  --> src/iterations/for_loop.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn to_upper_case(values: Vec<String>) -> Vec<String> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `repeat` is never used
[INFO] [stdout]   --> src/iterations/for_loop.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn repeat(value: char, repeat_number: i8) -> String {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_smallest_int` is never used
[INFO] [stdout]   --> src/iterations/for_loop.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn find_smallest_int(arr: &[i32]) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_smallest_int_smart` is never used
[INFO] [stdout]   --> src/iterations/for_loop.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn find_smallest_int_smart(arr: &[i32]) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_upper_case` is never used
[INFO] [stdout]  --> src/iterations/while_loop.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn to_upper_case(values: Vec<String>) -> Vec<String> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `repeat` is never used
[INFO] [stdout]   --> src/iterations/while_loop.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn repeat(value: char, repeat_number: i8) -> String {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_lower_case` is never used
[INFO] [stdout]  --> src/iterations/a_loop.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn to_lower_case(data: Vec<String>) -> Vec<String> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `repeat` is never used
[INFO] [stdout]   --> src/iterations/a_loop.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn repeat(value: char, repeat_number: usize) -> String {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_odd` is never used
[INFO] [stdout]  --> src/colls/vecs.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn find_odd(input: &[i32]) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_odd_codewars` is never used
[INFO] [stdout]   --> src/colls/vecs.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn find_odd_codewars(input: &[i32]) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `xo` is never used
[INFO] [stdout]  --> src/counters/counter.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn xo(string: &'static str) -> bool {
[INFO] [stdout]   |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `xo_smart` is never used
[INFO] [stdout]   --> src/counters/counter.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn xo_smart(string: &'static str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_upper_case` is never used
[INFO] [stdout]  --> src/strings/letter_case.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn is_upper_case(s: &str) -> bool {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort_by_length` is never used
[INFO] [stdout]  --> src/strings/sort.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn sort_by_length(arr: &[String]) -> Vec<String> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort_by_length_two` is never used
[INFO] [stdout]  --> src/strings/sort.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn sort_by_length_two(arr: &[String]) -> Vec<String> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort_by_length_three` is never used
[INFO] [stdout]   --> src/strings/sort.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn sort_by_length_three(arr: &[String]) -> Vec<String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_middle` is never used
[INFO] [stdout]  --> src/strings/substrings.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn get_middle(s: &str) -> &str {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_middle_smart` is never used
[INFO] [stdout]   --> src/strings/substrings.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn get_middle_smart(s: &str) -> &str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Solve` should have a snake case name
[INFO] [stdout]  --> src/integers/remove.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn Solve(data: &[i32]) -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^ help: convert the identifier to snake case (notice the capitalization): `solve`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Solve_with_deque` should have a snake case name
[INFO] [stdout]   --> src/integers/remove.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn Solve_with_deque(data: &[i32]) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `solve_with_deque`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 69 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `new_with_val` are never used
[INFO] [stdout]   --> src/ii_add_two_numbers/add_two_numbers.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl ListNode {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 11 |     #[inline]
[INFO] [stdout] 12 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn new_with_val(val: i32) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_number_from_list` is never used
[INFO] [stdout]   --> src/ii_add_two_numbers/add_two_numbers.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn get_number_from_list(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_two_numbers` is never used
[INFO] [stdout]   --> src/ii_add_two_numbers/add_two_numbers.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn add_two_numbers(l1: Option<Box<ListNode>>, l2: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_median_sorted_arrays_ii` is never used
[INFO] [stdout]   --> src/iv_median_two_arr/median_two_arrays.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn find_median_sorted_arrays_ii(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `create_box` is never used
[INFO] [stdout]   --> src/lists/linked_list.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<T: Clone> LinkedList<T> {
[INFO] [stdout]    | ---------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn create_box(&self, value: T) -> Box<Node<T>> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_with_val` is never used
[INFO] [stdout]   --> src/lists/linked_node.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl<'a> ListNode<'a, i32> {
[INFO] [stdout]    | -------------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn new_with_val(val: i32) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_shrek` is never used
[INFO] [stdout]   --> src/reversals/reverse.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn print_shrek() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Solve` should have a snake case name
[INFO] [stdout]  --> src/integers/remove.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn Solve(data: &[i32]) -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^ help: convert the identifier to snake case (notice the capitalization): `solve`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Solve_with_deque` should have a snake case name
[INFO] [stdout]   --> src/integers/remove.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn Solve_with_deque(data: &[i32]) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `solve_with_deque`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "a3740ff1fc9436ab8c4414c9606d8dc09235daa2bfe6c1e636ed00d48849956d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3740ff1fc9436ab8c4414c9606d8dc09235daa2bfe6c1e636ed00d48849956d", kill_on_drop: false }`
[INFO] [stdout] a3740ff1fc9436ab8c4414c9606d8dc09235daa2bfe6c1e636ed00d48849956d