[INFO] updating cached repository https://github.com/evgeni-nabokov/codewars-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/evgeni-nabokov/codewars-rust
[INFO] [stderr]    ea7e04f..f3698e9  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f3698e9d278a094c8d72d0d9070dac9baa1a7487
[INFO] checking evgeni-nabokov/codewars-rust against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevgeni-nabokov%2Fcodewars-rust" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/evgeni-nabokov/codewars-rust on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/evgeni-nabokov/codewars-rust
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[INFO] crate git repo https://github.com/evgeni-nabokov/codewars-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 99413800d1ac746aba760560abe8c9add90dd0ac6b4094f92e4ba12d8737430e
[INFO] running `"docker" "start" "-a" "99413800d1ac746aba760560abe8c9add90dd0ac6b4094f92e4ba12d8737430e"`
[INFO] [stderr]     Checking codewars v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: constant item is never used: `PRIME_NUMBERS`
[INFO] [stderr]    --> src/main.rs:13:1
[INFO] [stderr]     |
[INFO] [stderr] 13  | / const PRIME_NUMBERS: [u64; 1331] = [
[INFO] [stderr] 14  | |     2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,
[INFO] [stderr] 15  | |     103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,
[INFO] [stderr] 16  | |     199,211,223,227,229,233,239,241,251,257,263,269,271,277,281,283,293,307,311,
[INFO] [stderr] ...   |
[INFO] [stderr] 99  | |     7433,7451,7457,7459,7477,7481,7487,7489,7499,7507,7517,7523,7529,7537,7541
[INFO] [stderr] 100 | | ];
[INFO] [stderr]     | |__^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `good_vs_evil`
[INFO] [stderr]    --> src/main.rs:103:1
[INFO] [stderr]     |
[INFO] [stderr] 103 | fn good_vs_evil(good: &str, evil: &str) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `min_value`
[INFO] [stderr]    --> src/main.rs:126:1
[INFO] [stderr]     |
[INFO] [stderr] 126 | fn min_value(mut digits: Vec<i32>) -> i32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `passengers_in_bus`
[INFO] [stderr]    --> src/main.rs:133:1
[INFO] [stderr]     |
[INFO] [stderr] 133 | fn passengers_in_bus(bus_stops:&[(i32, i32)]) -> i32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `duplicate_encode`
[INFO] [stderr]    --> src/main.rs:138:1
[INFO] [stderr]     |
[INFO] [stderr] 138 | fn duplicate_encode(word: &str)->String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `comp`
[INFO] [stderr]    --> src/main.rs:159:1
[INFO] [stderr]     |
[INFO] [stderr] 159 | fn comp(a: Vec<i64>, b: Vec<i64>) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `backwards_prime`
[INFO] [stderr]    --> src/main.rs:178:1
[INFO] [stderr]     |
[INFO] [stderr] 178 | fn backwards_prime(start: u64, stop: u64) -> Vec<u64> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `reverse`
[INFO] [stderr]    --> src/main.rs:191:1
[INFO] [stderr]     |
[INFO] [stderr] 191 | fn reverse(n: &u64) -> u64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_prime`
[INFO] [stderr]    --> src/main.rs:201:1
[INFO] [stderr]     |
[INFO] [stderr] 201 | fn is_prime(n: &u64) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Address`
[INFO] [stderr]    --> src/main.rs:215:1
[INFO] [stderr]     |
[INFO] [stderr] 215 | struct Address<'a> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `travel`
[INFO] [stderr]    --> src/main.rs:221:1
[INFO] [stderr]     |
[INFO] [stderr] 221 | fn travel(text: &str, zipcode: &str) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_pairs_naive`
[INFO] [stderr]    --> src/main.rs:243:1
[INFO] [stderr]     |
[INFO] [stderr] 243 | fn sum_pairs_naive(numbers: &[i8], s: i8) -> Option<(i8, i8)> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_pairs_slow`
[INFO] [stderr]    --> src/main.rs:266:1
[INFO] [stderr]     |
[INFO] [stderr] 266 | fn sum_pairs_slow(numbers: &[i8], s: i8) -> Option<(i8, i8)> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_pairs`
[INFO] [stderr]    --> src/main.rs:277:1
[INFO] [stderr]     |
[INFO] [stderr] 277 | fn sum_pairs(numbers: &[i8], s: i8) -> Option<(i8, i8)> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `prime_gap`
[INFO] [stderr]    --> src/main.rs:292:1
[INFO] [stderr]     |
[INFO] [stderr] 292 | fn prime_gap(g: i32, m: u64, n: u64) -> Option<(u64, u64)> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/main.rs:317:5
[INFO] [stderr]     |
[INFO] [stderr] 317 |     pub fn new(n: u32) -> PartitionIter {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `int_part`
[INFO] [stderr]    --> src/main.rs:368:1
[INFO] [stderr]     |
[INFO] [stderr] 368 | fn int_part(n: u32) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `longest_consec`
[INFO] [stderr]    --> src/main.rs:384:1
[INFO] [stderr]     |
[INFO] [stderr] 384 | fn longest_consec(strarr: Vec<&str>, k: usize) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `longest_consec_test`
[INFO] [stderr]    --> src/main.rs:406:1
[INFO] [stderr]     |
[INFO] [stderr] 406 | fn longest_consec_test(strarr: Vec<&str>, k: usize, exp: &str) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `product_fib`
[INFO] [stderr]    --> src/main.rs:411:1
[INFO] [stderr]     |
[INFO] [stderr] 411 | fn product_fib(prod: u64) -> (u64, u64, bool) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `count_and_filter_chars`
[INFO] [stderr]    --> src/main.rs:423:1
[INFO] [stderr]     |
[INFO] [stderr] 423 | fn count_and_filter_chars(s: &str) -> HashMap<char, usize> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mix`
[INFO] [stderr]    --> src/main.rs:434:1
[INFO] [stderr]     |
[INFO] [stderr] 434 | fn mix(s1: &str, s2: &str) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_prime_factors`
[INFO] [stderr]    --> src/main.rs:479:1
[INFO] [stderr]     |
[INFO] [stderr] 479 | fn get_prime_factors(n: &u64) -> Vec<u64> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_primes`
[INFO] [stderr]    --> src/main.rs:518:1
[INFO] [stderr]     |
[INFO] [stderr] 518 | fn get_primes(start: u64, end: u64) -> Vec<u64> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_kprimes`
[INFO] [stderr]    --> src/main.rs:528:1
[INFO] [stderr]     |
[INFO] [stderr] 528 | fn get_kprimes(k: usize, start: u64, end: u64) -> Vec<u64> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `puzzle`
[INFO] [stderr]    --> src/main.rs:539:1
[INFO] [stderr]     |
[INFO] [stderr] 539 | fn puzzle(s: u64) -> u8 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LAST_DIGITS`
[INFO] [stderr]    --> src/main.rs:554:1
[INFO] [stderr]     |
[INFO] [stderr] 554 | / const LAST_DIGITS: [[u8; 4]; 10] = [
[INFO] [stderr] 555 | |     [0, 0, 0, 0],
[INFO] [stderr] 556 | |     [1, 1, 1, 1],
[INFO] [stderr] 557 | |     [6, 2, 4, 8],
[INFO] [stderr] ...   |
[INFO] [stderr] 564 | |     [1, 9, 1, 9],
[INFO] [stderr] 565 | | ];
[INFO] [stderr]     | |__^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `last_digit`
[INFO] [stderr]    --> src/main.rs:567:1
[INFO] [stderr]     |
[INFO] [stderr] 567 | fn last_digit(str1: &str, str2: &str) -> u8 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cons`
[INFO] [stderr]    --> src/main.rs:590:5
[INFO] [stderr]     |
[INFO] [stderr] 590 |     Cons(T, Box<Cons<T>>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Null`
[INFO] [stderr]    --> src/main.rs:591:5
[INFO] [stderr]     |
[INFO] [stderr] 591 |     Null
[INFO] [stderr]     |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/main.rs:595:5
[INFO] [stderr]     |
[INFO] [stderr] 595 |     pub fn new(head: T, tail: Self) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_vec`
[INFO] [stderr]    --> src/main.rs:601:5
[INFO] [stderr]     |
[INFO] [stderr] 601 |     pub fn to_vec(&self) -> Vec<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_iter`
[INFO] [stderr]    --> src/main.rs:614:5
[INFO] [stderr]     |
[INFO] [stderr] 614 | /     pub fn from_iter<I>(it: I) -> Self
[INFO] [stderr] 615 | |         where I: IntoIterator<Item=T> {
[INFO] [stderr] 616 | |
[INFO] [stderr] 617 | |         let mut it = it.into_iter();
[INFO] [stderr] ...   |
[INFO] [stderr] 621 | |         }
[INFO] [stderr] 622 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `filter`
[INFO] [stderr]    --> src/main.rs:624:5
[INFO] [stderr]     |
[INFO] [stderr] 624 | /     pub fn filter<F>(&self, fun: F) -> Self
[INFO] [stderr] 625 | |         where F: Fn(&T) -> bool {
[INFO] [stderr] 626 | |         match self {
[INFO] [stderr] 627 | |             &Cons::Null => Cons::Null,
[INFO] [stderr] ...   |
[INFO] [stderr] 633 | |         }
[INFO] [stderr] 634 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `map`
[INFO] [stderr]    --> src/main.rs:636:5
[INFO] [stderr]     |
[INFO] [stderr] 636 | /     pub fn map<F,S>(&self, fun: F) -> Cons<S>
[INFO] [stderr] 637 | |         where F: Fn(T) -> S, S: Clone {
[INFO] [stderr] 638 | |         match self {
[INFO] [stderr] 639 | |             &Cons::Null => Cons::Null,
[INFO] [stderr] ...   |
[INFO] [stderr] 642 | |         }
[INFO] [stderr] 643 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `expressions_matter`
[INFO] [stderr]    --> src/main.rs:647:1
[INFO] [stderr]     |
[INFO] [stderr] 647 | fn expressions_matter(a: u64, b: u64, c: u64) -> u64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `row_weights`
[INFO] [stderr]    --> src/main.rs:653:1
[INFO] [stderr]     |
[INFO] [stderr] 653 | fn row_weights(array: Vec<u32>) -> (u32, u32) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `meeting`
[INFO] [stderr]    --> src/main.rs:667:1
[INFO] [stderr]     |
[INFO] [stderr] 667 | fn meeting(s: &str) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `modpow`
[INFO] [stderr]    --> src/main.rs:678:1
[INFO] [stderr]     |
[INFO] [stderr] 678 | fn modpow(base: u64, exp: u64, modulus: u64) -> u64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `try_to_reduce_list`
[INFO] [stderr]    --> src/main.rs:694:1
[INFO] [stderr]     |
[INFO] [stderr] 694 | fn try_to_reduce_list(list: &[u64]) -> Vec<u64> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `last_digit2`
[INFO] [stderr]    --> src/main.rs:729:1
[INFO] [stderr]     |
[INFO] [stderr] 729 | fn last_digit2(list: &[u64]) -> u64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `range_extraction`
[INFO] [stderr]    --> src/main.rs:773:1
[INFO] [stderr]     |
[INFO] [stderr] 773 | fn range_extraction(a: &[i32]) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `acc_to_string`
[INFO] [stderr]    --> src/main.rs:796:1
[INFO] [stderr]     |
[INFO] [stderr] 796 | fn acc_to_string(acc: &[i32]) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `recover_secret`
[INFO] [stderr]    --> src/main.rs:807:1
[INFO] [stderr]     |
[INFO] [stderr] 807 | fn recover_secret(mut triplets: Vec<[char; 3]>) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `char_does_follow_another`
[INFO] [stderr]    --> src/main.rs:827:1
[INFO] [stderr]     |
[INFO] [stderr] 827 | fn char_does_follow_another(ch: &char, triplets: &[[char; 3]]) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `remove_char_from_beginning`
[INFO] [stderr]    --> src/main.rs:837:1
[INFO] [stderr]     |
[INFO] [stderr] 837 | fn remove_char_from_beginning(ch: &char, triplets: &mut [[char; 3]]) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `buddy_numbers`
[INFO] [stderr]    --> src/main.rs:848:1
[INFO] [stderr]     |
[INFO] [stderr] 848 | fn buddy_numbers(start: u64, limit: u64) -> Option<(u64, u64)> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_sum_of_factors`
[INFO] [stderr]    --> src/main.rs:867:1
[INFO] [stderr]     |
[INFO] [stderr] 867 | fn get_sum_of_factors(n: &u64) -> u64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_sum_of_factors_slow`
[INFO] [stderr]    --> src/main.rs:891:1
[INFO] [stderr]     |
[INFO] [stderr] 891 | fn get_sum_of_factors_slow(n: &u64) -> u64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_factors_slow`
[INFO] [stderr]    --> src/main.rs:901:1
[INFO] [stderr]     |
[INFO] [stderr] 901 | fn get_factors_slow(n: &u64) -> Vec<u64> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `max_multiple`
[INFO] [stderr]    --> src/main.rs:912:1
[INFO] [stderr]     |
[INFO] [stderr] 912 | fn max_multiple(divisor: u32, bound: u32) -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_x_of_pseries`
[INFO] [stderr]    --> src/main.rs:918:1
[INFO] [stderr]     |
[INFO] [stderr] 918 | fn find_x_of_pseries(m: f64) -> f64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_of_series`
[INFO] [stderr]    --> src/main.rs:923:1
[INFO] [stderr]     |
[INFO] [stderr] 923 | fn sum_of_series(n: i32) -> f64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `phone_directory`
[INFO] [stderr]    --> src/main.rs:936:1
[INFO] [stderr]     |
[INFO] [stderr] 936 | fn phone_directory(dir: &str, num: &str) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `consec_kprimes`
[INFO] [stderr]    --> src/main.rs:989:1
[INFO] [stderr]     |
[INFO] [stderr] 989 | fn consec_kprimes(k: usize, arr: Vec<u64>) -> u64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `factorial_decomp`
[INFO] [stderr]     --> src/main.rs:1008:1
[INFO] [stderr]      |
[INFO] [stderr] 1008 | fn factorial_decomp(n: u64) -> String {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `prime_factors`
[INFO] [stderr]     --> src/main.rs:1044:1
[INFO] [stderr]      |
[INFO] [stderr] 1044 | fn prime_factors(n: u64) -> String {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rgb`
[INFO] [stderr]     --> src/main.rs:1075:1
[INFO] [stderr]      |
[INFO] [stderr] 1075 | fn rgb(r: i32, g: i32, b: i32) -> String {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `convert_to_byte`
[INFO] [stderr]     --> src/main.rs:1082:1
[INFO] [stderr]      |
[INFO] [stderr] 1082 | fn convert_to_byte(c: i32) -> u8 {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `perimeter`
[INFO] [stderr]     --> src/main.rs:1087:1
[INFO] [stderr]      |
[INFO] [stderr] 1087 | fn perimeter(n: u64) -> u64 {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `john_ann`
[INFO] [stderr]     --> src/main.rs:1101:1
[INFO] [stderr]      |
[INFO] [stderr] 1101 | fn john_ann(n: &u32) -> (Vec<u32>, Vec<u32>) {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `john`
[INFO] [stderr]     --> src/main.rs:1111:1
[INFO] [stderr]      |
[INFO] [stderr] 1111 | fn john(n: u32) -> Vec<u32> {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ann`
[INFO] [stderr]     --> src/main.rs:1114:1
[INFO] [stderr]      |
[INFO] [stderr] 1114 | fn ann(n: u32) -> Vec<u32> {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_john`
[INFO] [stderr]     --> src/main.rs:1118:1
[INFO] [stderr]      |
[INFO] [stderr] 1118 | fn sum_john(n: u32) -> u32 {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_ann`
[INFO] [stderr]     --> src/main.rs:1122:1
[INFO] [stderr]      |
[INFO] [stderr] 1122 | fn sum_ann(n: u32) -> u32 {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dbl_linear`
[INFO] [stderr]     --> src/main.rs:1127:1
[INFO] [stderr]      |
[INFO] [stderr] 1127 | fn dbl_linear(n: u32) -> u32 {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_pairs_naive`
[INFO] [stderr]    --> src/main.rs:243:1
[INFO] [stderr]     |
[INFO] [stderr] 243 | fn sum_pairs_naive(numbers: &[i8], s: i8) -> Option<(i8, i8)> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_pairs_slow`
[INFO] [stderr]    --> src/main.rs:266:1
[INFO] [stderr]     |
[INFO] [stderr] 266 | fn sum_pairs_slow(numbers: &[i8], s: i8) -> Option<(i8, i8)> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_sum_of_factors_slow`
[INFO] [stderr]    --> src/main.rs:891:1
[INFO] [stderr]     |
[INFO] [stderr] 891 | fn get_sum_of_factors_slow(n: &u64) -> u64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_factors_slow`
[INFO] [stderr]    --> src/main.rs:901:1
[INFO] [stderr]     |
[INFO] [stderr] 901 | fn get_factors_slow(n: &u64) -> Vec<u64> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.48s
[INFO] running `"docker" "inspect" "99413800d1ac746aba760560abe8c9add90dd0ac6b4094f92e4ba12d8737430e"`
[INFO] running `"docker" "rm" "-f" "99413800d1ac746aba760560abe8c9add90dd0ac6b4094f92e4ba12d8737430e"`
[INFO] [stdout] 99413800d1ac746aba760560abe8c9add90dd0ac6b4094f92e4ba12d8737430e