[INFO] cloning repository https://github.com/LJBD/rust-codewars
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LJBD/rust-codewars" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLJBD%2Frust-codewars"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLJBD%2Frust-codewars'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 603abf67dda2157fbc5aeb335a00d4bc3443b981
[INFO] checking LJBD/rust-codewars against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLJBD%2Frust-codewars" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LJBD/rust-codewars on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/LJBD/rust-codewars
[INFO] finished tweaking git repo https://github.com/LJBD/rust-codewars
[INFO] tweaked toml for git repo https://github.com/LJBD/rust-codewars written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/LJBD/rust-codewars already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 90de16fa9ef065bbabe3f1b97614f0d406f7bca91264bc5917bd359d3cb58f9c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "90de16fa9ef065bbabe3f1b97614f0d406f7bca91264bc5917bd359d3cb58f9c"`
[INFO] [stderr]     Checking rust-codewars v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/kyu5/k_primes.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     (2..=(n as f32).sqrt().floor() as i32)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/kyu6/tribonacci.rs:22:289
[INFO] [stderr]    |
[INFO] [stderr] 22 |     assert_eq!(tribonacci(&[0.5, 0.5, 0.5], 30), vec![0.5, 0.5, 0.5, 1.5, 2.5, 4.5, 8.5, 15.5, 28.5, 52.5, 96.5, 177.5, 326.5, 600.5, 1104.5, 2031.5, 3736.5, 6872.5, 12640.5, 23249.5, 42762.5, 78652.5, 144664.5, 266079.5, 489396.5, 900140.5, 1655616.5, 3045153.5, 5600910.5, 10301680.5]);;
[INFO] [stderr]    |                                                                                                                                                                                                                                                                                                 ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/kyu5/k_primes.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     (2..=(n as f32).sqrt().floor() as i32)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_number_from_article`
[INFO] [stderr]  --> src/kyu6/help_the_bookseller.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn get_number_from_article(article: &str) -> Result<u16, String> {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `stock_list`
[INFO] [stderr]  --> src/kyu6/help_the_bookseller.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn stock_list(list_art: Vec<&str>, list_cat: Vec<&str>) -> String {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tribonacci`
[INFO] [stderr]  --> src/kyu6/tribonacci.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn tribonacci(signature: &[f64; 3], n: usize) -> Vec<f64> {
[INFO] [stderr]   |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_primes_up_to`
[INFO] [stderr]  --> src/kyu5/k_primes.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn get_primes_up_to(n: i32) -> Vec<i32> {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_k_prime`
[INFO] [stderr]   --> src/kyu5/k_primes.rs:24:4
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn is_k_prime(n: i32, k: i32, primes: &Vec<i32>) -> bool {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_to_square_range`
[INFO] [stderr]   --> src/kyu5/k_primes.rs:40:4
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn get_to_square_range(n: i32) -> RangeInclusive<i32> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `count_kprimes`
[INFO] [stderr]   --> src/kyu5/k_primes.rs:44:4
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn count_kprimes(k: i32, start: i32, nd: i32) -> Vec<i32> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `puzzle`
[INFO] [stderr]   --> src/kyu5/k_primes.rs:51:4
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn puzzle(s: i32) -> i32 {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `testing_count_kprimes`
[INFO] [stderr]   --> src/kyu5/k_primes.rs:71:4
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn testing_count_kprimes(k: i32, start: i32, nd: i32, exp: Vec<i32>) -> () {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `testing`
[INFO] [stderr]   --> src/kyu5/k_primes.rs:81:4
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn testing(n: i32, exp: i32) -> () {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `remove_nb`
[INFO] [stderr]  --> src/kyu5/is_my_friend_cheating.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn remove_nb(m: i32) -> Vec<(i32, i32)> {
[INFO] [stderr]   |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `testing`
[INFO] [stderr]   --> src/kyu5/is_my_friend_cheating.rs:16:4
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn testing(n: i32, exp: Vec<(i32, i32)>) -> () {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_last_digits`
[INFO] [stderr]  --> src/kyu5/last_digit.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn get_last_digits(number: &str, places: usize) -> i32 {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_last_digit_of_power`
[INFO] [stderr]   --> src/kyu5/last_digit.rs:15:4
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn get_last_digit_of_power(n: i32, power: u32) -> i32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `last_digit`
[INFO] [stderr]   --> src/kyu5/last_digit.rs:20:4
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn last_digit(str1: &str, str2: &str) -> i32 {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `contains_char`
[INFO] [stderr]  --> src/kyu4/secret_string.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn contains_char(c: char, subject: &String) -> bool {
[INFO] [stderr]   |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `index_of`
[INFO] [stderr]  --> src/kyu4/secret_string.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn index_of(c: char, chars: &Vec<char>) -> usize {
[INFO] [stderr]   |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `take_first_omitting`
[INFO] [stderr]   --> src/kyu4/secret_string.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn take_first_omitting(chars_matrix: &Vec<Vec<char>>, omit: &String) -> Vec<char> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `take_all_omitting`
[INFO] [stderr]   --> src/kyu4/secret_string.rs:21:4
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn take_all_omitting(triplets: &Vec<[char; 3]>, omit: &String) -> Vec<Vec<char>> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `positions_of`
[INFO] [stderr]   --> src/kyu4/secret_string.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn positions_of(c: char, chars_matrix: &Vec<Vec<char>>) -> Vec<usize> {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `recover_secret`
[INFO] [stderr]   --> src/kyu4/secret_string.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn recover_secret(triplets: Vec<[char; 3]>) -> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `decompose`
[INFO] [stderr]  --> src/kyu4/square_into_squares.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn decompose(n: i64) -> Option<Vec<i64>> {
[INFO] [stderr]   |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `testing`
[INFO] [stderr]   --> src/kyu4/square_into_squares.rs:25:4
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn testing(n: i64, exp: Option<Vec<i64>>) -> () {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 24 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `"docker" "inspect" "90de16fa9ef065bbabe3f1b97614f0d406f7bca91264bc5917bd359d3cb58f9c"`
[INFO] running `"docker" "rm" "-f" "90de16fa9ef065bbabe3f1b97614f0d406f7bca91264bc5917bd359d3cb58f9c"`
[INFO] [stdout] 90de16fa9ef065bbabe3f1b97614f0d406f7bca91264bc5917bd359d3cb58f9c