[INFO] cloning repository https://github.com/seanowenhayes/codewars
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/seanowenhayes/codewars" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanowenhayes%2Fcodewars", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanowenhayes%2Fcodewars'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3abc863e19894867a3fdcd8e60ac79cca70ae5b9
[INFO] testing seanowenhayes/codewars against 1.93.0 for beta-1.94-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanowenhayes%2Fcodewars" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/seanowenhayes/codewars
[INFO] finished tweaking git repo https://github.com/seanowenhayes/codewars
[INFO] tweaked toml for git repo https://github.com/seanowenhayes/codewars written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/seanowenhayes/codewars on toolchain 1.93.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.93.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/seanowenhayes/codewars 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" "+1.93.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94d61eb347fe953852ce4fc804bde1c1e6d3e4709bca34cce4519ec533f79d78
[INFO] running `Command { std: "docker" "start" "-a" "94d61eb347fe953852ce4fc804bde1c1e6d3e4709bca34cce4519ec533f79d78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94d61eb347fe953852ce4fc804bde1c1e6d3e4709bca34cce4519ec533f79d78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94d61eb347fe953852ce4fc804bde1c1e6d3e4709bca34cce4519ec533f79d78", kill_on_drop: false }`
[INFO] [stdout] 94d61eb347fe953852ce4fc804bde1c1e6d3e4709bca34cce4519ec533f79d78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e87f9b4aa1ea0f9b64d6c5b465fac82e160870efc00a94033cf6f98d63428124
[INFO] running `Command { std: "docker" "start" "-a" "e87f9b4aa1ea0f9b64d6c5b465fac82e160870efc00a94033cf6f98d63428124", kill_on_drop: false }`
[INFO] [stderr]    Compiling codewars v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]  --> src/matrix_determinant.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn determinant(matrix: &[Vec<i64>]) -> i64 {
[INFO] [stdout]   |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `alphabet_position` is never used
[INFO] [stdout]  --> src/alphabet_to_number.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn alphabet_position(text: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array_diff` is never used
[INFO] [stdout]  --> src/array_diff.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn array_diff<T: PartialEq>(a: Vec<T>, b: Vec<T>) -> Vec<T> {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `numbers_to_string` is never used
[INFO] [stdout]  --> src/create_phone_number.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn numbers_to_string(numbers: &[u8]) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_phone_number` is never used
[INFO] [stdout]  --> src/create_phone_number.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn create_phone_number(numbers: &[u8]) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pad` is never used
[INFO] [stdout]  --> src/human_readable_time.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn pad(time: u32) -> String {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SECONDS_IN_MINUTE` is never used
[INFO] [stdout]  --> src/human_readable_time.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const SECONDS_IN_MINUTE: u32 = 60;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SECONDS_IN_HOUR` is never used
[INFO] [stdout]   --> src/human_readable_time.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const SECONDS_IN_HOUR: u32 = 60 * 60;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_readable` is never used
[INFO] [stdout]   --> src/human_readable_time.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn make_readable(seconds: u32) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `valid_isbn10` is never used
[INFO] [stdout]  --> src/isbn_10_validation.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn valid_isbn10(isbn: &str) -> bool {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `are_any_characters_not_digits` is never used
[INFO] [stdout]   --> src/isbn_10_validation.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn are_any_characters_not_digits(isbn: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_invalid_last_character` is never used
[INFO] [stdout]   --> src/isbn_10_validation.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn is_invalid_last_character(last_char: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse` is never used
[INFO] [stdout]  --> src/make_the_dead_fish_swim.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn parse(code: &str) -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `determinant` is never used
[INFO] [stdout]  --> src/matrix_determinant.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn determinant(matrix: &[Vec<i64>]) -> i64 {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `odd_or_even` is never used
[INFO] [stdout]  --> src/odd_or_even.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn odd_or_even(numbers: Vec<i32>) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `validate_pin` is never used
[INFO] [stdout]  --> src/pin_validate.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn validate_pin(pin: &str) -> bool {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_prime` is never used
[INFO] [stdout]  --> src/prime_factors.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn is_prime(n: i64) -> bool {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_factors` is never used
[INFO] [stdout]   --> src/prime_factors.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn find_factors(n: i64) -> (i64, i64) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `prime_factors` is never used
[INFO] [stdout]   --> src/prime_factors.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn prime_factors(n: i64) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testing` is never used
[INFO] [stdout]   --> src/prime_factors.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn testing(n: i64, exp: &str) -> () {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `printer_error` is never used
[INFO] [stdout]  --> src/printer_error.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn printer_error(s: &str) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_slide_down` is never used
[INFO] [stdout]  --> src/pyramid_slide_down.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn longest_slide_down(pyramid: &[Vec<u16>]) -> u16 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Item` is never used
[INFO] [stdout]  --> src/range_extraction.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     enum Item {
[INFO] [stdout]   |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_string` is never used
[INFO] [stdout]  --> src/range_extraction.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     impl Item {
[INFO] [stdout]   |     --------- method in this implementation
[INFO] [stdout] 8 |         fn to_string(&self) -> String {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `range_extraction` is never used
[INFO] [stdout]   --> src/range_extraction.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn range_extraction(a: &[i32]) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Quadrilateral` is never constructed
[INFO] [stdout]  --> src/rectangle_into_squares.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Quadrilateral {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_square`, `largest_square`, and `remove_largest_square` are never used
[INFO] [stdout]   --> src/rectangle_into_squares.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Quadrilateral {
[INFO] [stdout]    | ------------------ methods in this implementation
[INFO] [stdout] 10 |     fn is_square(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn largest_square(&self) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn remove_largest_square(&self) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sq_in_rect` is never used
[INFO] [stdout]   --> src/rectangle_into_squares.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn sq_in_rect(lng: i32, wdth: i32) -> Option<Vec<i32>> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testing` is never used
[INFO] [stdout]   --> src/rectangle_into_squares.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn testing(lng: i32, wdth: i32, exp: Option<Vec<i32>>) -> () {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reduce_fraction` is never used
[INFO] [stdout]  --> src/reduce_fraction.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn reduce_fraction(fraction: (u32, u32)) -> (u32, u32) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num_as_roman` is never used
[INFO] [stdout]  --> src/roman_numerals_encoder.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn num_as_roman(num: i32) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `M` is never used
[INFO] [stdout]   --> src/roman_numerals_helper.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 | const M: u32 = 1000;
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CM` is never used
[INFO] [stdout]   --> src/roman_numerals_helper.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 | const CM: u32 = 900;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `D` is never used
[INFO] [stdout]   --> src/roman_numerals_helper.rs:24:7
[INFO] [stdout]    |
[INFO] [stdout] 24 | const D: u32 = 500;
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CD` is never used
[INFO] [stdout]   --> src/roman_numerals_helper.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 | const CD: u32 = 400;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `C` is never used
[INFO] [stdout]   --> src/roman_numerals_helper.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | const C: u32 = 100;
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `XC` is never used
[INFO] [stdout]   --> src/roman_numerals_helper.rs:27:7
[INFO] [stdout]    |
[INFO] [stdout] 27 | const XC: u32 = 90;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `L` is never used
[INFO] [stdout]   --> src/roman_numerals_helper.rs:28:7
[INFO] [stdout]    |
[INFO] [stdout] 28 | const L: u32 = 50;
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `XL` is never used
[INFO] [stdout]   --> src/roman_numerals_helper.rs:29:7
[INFO] [stdout]    |
[INFO] [stdout] 29 | const XL: u32 = 40;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `X` is never used
[INFO] [stdout]   --> src/roman_numerals_helper.rs:30:7
[INFO] [stdout]    |
[INFO] [stdout] 30 | const X: u32 = 10;
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `IX` is never used
[INFO] [stdout]   --> src/roman_numerals_helper.rs:31:7
[INFO] [stdout]    |
[INFO] [stdout] 31 | const IX: u32 = 9;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `V` is never used
[INFO] [stdout]   --> src/roman_numerals_helper.rs:32:7
[INFO] [stdout]    |
[INFO] [stdout] 32 | const V: u32 = 5;
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `IV` is never used
[INFO] [stdout]   --> src/roman_numerals_helper.rs:33:7
[INFO] [stdout]    |
[INFO] [stdout] 33 | const IV: u32 = 4;
[INFO] [stdout]    |       ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `I` is never used
[INFO] [stdout]   --> src/roman_numerals_helper.rs:34:7
[INFO] [stdout]    |
[INFO] [stdout] 34 | const I: u32 = 1;
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_roman` is never used
[INFO] [stdout]   --> src/roman_numerals_helper.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn to_roman(r: u32) -> String {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `from_roman` is never used
[INFO] [stdout]   --> src/roman_numerals_helper.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn from_roman(s: &str) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `snail` is never used
[INFO] [stdout]  --> src/snail_sort.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn snail(matrix: &[Vec<i32>]) -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `permutations` is never used
[INFO] [stdout]  --> src/so_many_permutations.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn permutations(s: &str) -> Vec<String> {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort_array` is never used
[INFO] [stdout]  --> src/sort_the_odd.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn sort_array(arr: &[i32]) -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_intervals` is never used
[INFO] [stdout]  --> src/sum_of_intervals.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn sum_intervals(intervals: &[(i32, i32)]) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_two_smallest_numbers` is never used
[INFO] [stdout]  --> src/two_sum.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn sum_two_smallest_numbers(numbers: &[u32]) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `order_weight` is never used
[INFO] [stdout]  --> src/weight_for_weight.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn order_weight(s: &str) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testing` is never used
[INFO] [stdout]   --> src/weight_for_weight.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn testing(s: &str, exp: &str) -> () {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "e87f9b4aa1ea0f9b64d6c5b465fac82e160870efc00a94033cf6f98d63428124", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e87f9b4aa1ea0f9b64d6c5b465fac82e160870efc00a94033cf6f98d63428124", kill_on_drop: false }`
[INFO] [stdout] e87f9b4aa1ea0f9b64d6c5b465fac82e160870efc00a94033cf6f98d63428124
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aef9dc4a37414799b6d210da8fc69a88d3cb5007fa51092a267be6949321c32f
[INFO] running `Command { std: "docker" "start" "-a" "aef9dc4a37414799b6d210da8fc69a88d3cb5007fa51092a267be6949321c32f", kill_on_drop: false }`
[INFO] [stderr]    Compiling codewars v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `matrix`
[INFO] [stdout]  --> src/matrix_determinant.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn determinant(matrix: &[Vec<i64>]) -> i64 {
[INFO] [stdout]   |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "aef9dc4a37414799b6d210da8fc69a88d3cb5007fa51092a267be6949321c32f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aef9dc4a37414799b6d210da8fc69a88d3cb5007fa51092a267be6949321c32f", kill_on_drop: false }`
[INFO] [stdout] aef9dc4a37414799b6d210da8fc69a88d3cb5007fa51092a267be6949321c32f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2121d3b5aadd6849f72be9cc3656be9a47f7a3af99b2df5572c4a88c244f5083
[INFO] running `Command { std: "docker" "start" "-a" "2121d3b5aadd6849f72be9cc3656be9a47f7a3af99b2df5572c4a88c244f5083", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `matrix`
[INFO] [stderr]  --> src/matrix_determinant.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn determinant(matrix: &[Vec<i64>]) -> i64 {
[INFO] [stderr]   |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `codewars` (bin "codewars" test) generated 1 warning (run `cargo fix --bin "codewars" -p codewars --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/codewars-313eff8deb163aa6)
[INFO] [stdout] 
[INFO] [stdout] running 43 tests
[INFO] [stdout] test alphabet_to_number::returns_expected ... ok
[INFO] [stdout] test human_readable_time::tests::fixed_tests ... ok
[INFO] [stdout] test array_diff::tests::returns_expected ... ok
[INFO] [stdout] test create_phone_number::returns_expected ... ok
[INFO] [stdout] test make_the_dead_fish_swim::example_programs::example_iiisdoso ... ok
[INFO] [stdout] test isbn_10_validation::tests::sample_tests ... ok
[INFO] [stdout] test make_the_dead_fish_swim::example_programs::example_iiisxxxdoso ... ok
[INFO] [stdout] test odd_or_even::tests::test_empty_array ... ok
[INFO] [stdout] test odd_or_even::tests::test_negative_odd ... ok
[INFO] [stdout] test odd_or_even::tests::test_even ... ok
[INFO] [stdout] test odd_or_even::tests::test_negative_even ... ok
[INFO] [stdout] test odd_or_even::tests::test_odd ... ok
[INFO] [stdout] test odd_or_even::tests::test_single_even ... ok
[INFO] [stdout] test odd_or_even::tests::test_single_odd ... ok
[INFO] [stdout] test pin_validate::tests::invalid_length_tests ... ok
[INFO] [stdout] test pin_validate::tests::non_digit_chars_tests ... ok
[INFO] [stdout] test pyramid_slide_down::tests::test_medium ... ok
[INFO] [stdout] test pyramid_slide_down::tests::test_small_tricky ... ok
[INFO] [stdout] test pyramid_slide_down::tests::test_small ... ok
[INFO] [stdout] test roman_numerals_helper::example_tests::_1_to_roman ... ok
[INFO] [stdout] test range_extraction::tests::example ... ok
[INFO] [stdout] test reduce_fraction::tests::simple_fractions ... ok
[INFO] [stdout] test printer_error::tests::should_pass_all_the_tests_provided ... ok
[INFO] [stdout] test rectangle_into_squares::tests_sq_in_rect ... ok
[INFO] [stdout] test pyramid_slide_down::tests::test_tiny ... ok
[INFO] [stdout] test sort_the_odd::tests::basic ... ok
[INFO] [stdout] test so_many_permutations::example_tests::sample_tests ... ok
[INFO] [stdout] test roman_numerals_encoder::returns_expected ... ok
[INFO] [stdout] test roman_numerals_helper::example_tests::_2_from_roman ... ok
[INFO] [stdout] test snail_sort::tests::sample_test1 ... ok
[INFO] [stdout] test snail_sort::tests::sample_test2 ... ok
[INFO] [stdout] test snail_sort::tests::sample_test4 ... ok
[INFO] [stdout] test pyramid_slide_down::tests::test_really_small ... ok
[INFO] [stdout] test pin_validate::tests::valid_pin_tests ... ok
[INFO] [stdout] test snail_sort::tests::sample_test5 ... ok
[INFO] [stdout] test sum_of_intervals::sample_tests::large_intervals ... ok
[INFO] [stdout] test snail_sort::tests::sample_test3 ... ok
[INFO] [stdout] test sum_of_intervals::sample_tests::non_overlapping_intervals ... ok
[INFO] [stdout] test sum_of_intervals::sample_tests::overlapping_intervals ... ok
[INFO] [stdout] test two_sum::tests::sample_tests ... ok
[INFO] [stdout] test weight_for_weight::basics_order_weight ... ok
[INFO] [stdout] test matrix_determinant::tests::sample_tests ... FAILED
[INFO] [stdout] test prime_factors::basics_prime_factors ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- matrix_determinant::tests::sample_tests stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'matrix_determinant::tests::sample_tests' (32) panicked at src/matrix_determinant.rs:2:5:
[INFO] [stdout] not yet implemented
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5c91e4c376a2 - std::backtrace_rs::backtrace::libunwind::trace::h90e89fac33585832
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5c91e4c376a2 - std::backtrace_rs::backtrace::trace_unsynchronized::heebcf2380a8e7359
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5c91e4c376a2 - std::sys::backtrace::_print_fmt::hdf3e2a22d2f810db
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:68:9
[INFO] [stdout]    3:     0x5c91e4c376a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hac1d885928ba8582
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:38:26
[INFO] [stdout]    4:     0x5c91e4c48637 - core::fmt::rt::Argument::fmt::h6901eb7c19abebe8
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5c91e4c48637 - core::fmt::write::h83ebb4d32483be9e
[INFO] [stdout]    6:     0x5c91e4c06456 - std::io::default_write_fmt::h751a79cdae495f10
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5c91e4c06456 - std::io::Write::write_fmt::h9ef514f8700ff7b2
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5c91e4c16a69 - std::sys::backtrace::BacktraceLock::print::hcc2e1a3ac996c911
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:41:9
[INFO] [stdout]    9:     0x5c91e4c16a69 - std::panicking::default_hook::{{closure}}::h8e9c4d1276f0925f
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5c91e4c16901 - std::panicking::default_hook::h2b2078d38b534dfb
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5c91e4bdb09e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h39d051e7dedac6a7
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5c91e4bdb09e - test::test_main_with_exit_callback::{{closure}}::h4b005fe75814c302
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5c91e4c16ce2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hd426070722c13cbf
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5c91e4c16ce2 - std::panicking::panic_with_hook::h39b739724e701bfd
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5c91e4c16b5a - std::panicking::panic_handler::{{closure}}::he540c4833054e458
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:691:13
[INFO] [stdout]   16:     0x5c91e4c120f9 - std::sys::backtrace::__rust_end_short_backtrace::hfa179d89deec8aed
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:176:18
[INFO] [stdout]   17:     0x5c91e4bfb21d - __rustc[d131491b17107b07]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5c91e4c4fe9c - core::panicking::panic_fmt::ha564519d657d9c46
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5c91e4c4fe62 - core::panicking::panic::h40aea00c5b72b770
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panicking.rs:150:5
[INFO] [stdout]   20:     0x5c91e4bbb737 - codewars::matrix_determinant::determinant::h4c4b900b24f76dee
[INFO] [stdout]                                at /opt/rustwide/workdir/src/matrix_determinant.rs:2:5
[INFO] [stdout]   21:     0x5c91e4bad4d8 - codewars::matrix_determinant::tests::dotest::hc19eb80ee85d0513
[INFO] [stdout]                                at /opt/rustwide/workdir/src/matrix_determinant.rs:12:20
[INFO] [stdout]   22:     0x5c91e4bacfd6 - codewars::matrix_determinant::tests::sample_tests::hb9dadeab740f9aa6
[INFO] [stdout]                                at /opt/rustwide/workdir/src/matrix_determinant.rs:17:9
[INFO] [stdout]   23:     0x5c91e4bad4a7 - codewars::matrix_determinant::tests::sample_tests::{{closure}}::hb550f086d8a3c279
[INFO] [stdout]                                at /opt/rustwide/workdir/src/matrix_determinant.rs:16:22
[INFO] [stdout]   24:     0x5c91e4b96f56 - core::ops::function::FnOnce::call_once::h7a770c2091e98d49
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x5c91e4bdaecb - core::ops::function::FnOnce::call_once::h0217b30cfdee2e67
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x5c91e4bdaecb - test::__rust_begin_short_backtrace::h6d98714a1e28f556
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:663:18
[INFO] [stdout]   27:     0x5c91e4bee85a - test::run_test_in_process::{{closure}}::he2c70d2634d3a3cc
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:686:74
[INFO] [stdout]   28:     0x5c91e4bee85a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h40a0a825bcf17fdd
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   29:     0x5c91e4bee85a - std::panicking::catch_unwind::do_call::h6c8eb5dd6e7b5975
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:581:40
[INFO] [stdout]   30:     0x5c91e4bee85a - std::panicking::catch_unwind::h55455eac2972ad1e
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:544:19
[INFO] [stdout]   31:     0x5c91e4bee85a - std::panic::catch_unwind::h0025465150a5e558
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panic.rs:359:14
[INFO] [stdout]   32:     0x5c91e4bee85a - test::run_test_in_process::hb61e682f9b630fbc
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:686:27
[INFO] [stdout]   33:     0x5c91e4bee85a - test::run_test::{{closure}}::hc2c2a7a38ab176e2
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:607:43
[INFO] [stdout]   34:     0x5c91e4bc8af4 - test::run_test::{{closure}}::ha91867b85cd2a911
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:637:41
[INFO] [stdout]   35:     0x5c91e4bc8af4 - std::sys::backtrace::__rust_begin_short_backtrace::ha00a9fe02049c339
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:160:18
[INFO] [stdout]   36:     0x5c91e4bcc422 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::hd629fba9153dfb55
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/thread/lifecycle.rs:92:13
[INFO] [stdout]   37:     0x5c91e4bcc422 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4189018816a5c5d9
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   38:     0x5c91e4bcc422 - std::panicking::catch_unwind::do_call::hf9fcdbca3c2e9877
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:581:40
[INFO] [stdout]   39:     0x5c91e4bcc422 - std::panicking::catch_unwind::h97b92d88631c7c64
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:544:19
[INFO] [stdout]   40:     0x5c91e4bcc422 - std::panic::catch_unwind::ha77cdbb68e725e5e
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panic.rs:359:14
[INFO] [stdout]   41:     0x5c91e4bcc422 - std::thread::lifecycle::spawn_unchecked::{{closure}}::h511f05bc1a132253
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/thread/lifecycle.rs:90:26
[INFO] [stdout]   42:     0x5c91e4bcc422 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6b68b31e9b685cb8
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   43:     0x5c91e4c0d78f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h22a27d165e4e871d
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   44:     0x5c91e4c0d78f - std::sys::thread::unix::Thread::new::thread_start::h45cc87bb053add0f
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   45:     0x7f8430504aa4 - <unknown>
[INFO] [stdout]   46:     0x7f8430591a64 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- prime_factors::basics_prime_factors stdout ----
[INFO] [stdout] Not a primer 4
[INFO] [stdout] i is 2 and n / i is 2
[INFO] [stdout] Dunno 27
[INFO] [stdout] Not a primer 27
[INFO] [stdout] i is 3 and n / i is 9
[INFO] [stdout] Dunno 9
[INFO] [stdout] Not a primer 9
[INFO] [stdout] i is 3 and n / i is 3
[INFO] [stdout] 
[INFO] [stdout] thread 'prime_factors::basics_prime_factors' (43) panicked at src/prime_factors.rs:38:5:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: "(3**(3**3))"
[INFO] [stdout]  right: "(3**3)"
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5c91e4c376a2 - std::backtrace_rs::backtrace::libunwind::trace::h90e89fac33585832
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5c91e4c376a2 - std::backtrace_rs::backtrace::trace_unsynchronized::heebcf2380a8e7359
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5c91e4c376a2 - std::sys::backtrace::_print_fmt::hdf3e2a22d2f810db
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:68:9
[INFO] [stdout]    3:     0x5c91e4c376a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hac1d885928ba8582
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:38:26
[INFO] [stdout]    4:     0x5c91e4c48637 - core::fmt::rt::Argument::fmt::h6901eb7c19abebe8
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr] error: test failed, to rerun pass `--bin codewars`
[INFO] [stdout]    5:     0x5c91e4c48637 - core::fmt::write::h83ebb4d32483be9e
[INFO] [stdout]    6:     0x5c91e4c06456 - std::io::default_write_fmt::h751a79cdae495f10
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5c91e4c06456 - std::io::Write::write_fmt::h9ef514f8700ff7b2
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5c91e4c16a69 - std::sys::backtrace::BacktraceLock::print::hcc2e1a3ac996c911
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:41:9
[INFO] [stdout]    9:     0x5c91e4c16a69 - std::panicking::default_hook::{{closure}}::h8e9c4d1276f0925f
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5c91e4c16901 - std::panicking::default_hook::h2b2078d38b534dfb
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5c91e4bdb09e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h39d051e7dedac6a7
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5c91e4bdb09e - test::test_main_with_exit_callback::{{closure}}::h4b005fe75814c302
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5c91e4c16ce2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hd426070722c13cbf
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5c91e4c16ce2 - std::panicking::panic_with_hook::h39b739724e701bfd
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5c91e4c16b28 - std::panicking::panic_handler::{{closure}}::he540c4833054e458
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5c91e4c120f9 - std::sys::backtrace::__rust_end_short_backtrace::hfa179d89deec8aed
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:176:18
[INFO] [stdout]   17:     0x5c91e4bfb21d - __rustc[d131491b17107b07]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5c91e4c4fe9c - core::panicking::panic_fmt::ha564519d657d9c46
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5c91e4c4fd53 - core::panicking::assert_failed_inner::h6fc38e43be639d33
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panicking.rs:439:17
[INFO] [stdout]   20:     0x5c91e4b87b81 - core::panicking::assert_failed::h2aa3c7cad5daeaf6
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panicking.rs:394:5
[INFO] [stdout]   21:     0x5c91e4b950f6 - codewars::prime_factors::testing::had4c3c583eb7d904
[INFO] [stdout]                                at /opt/rustwide/workdir/src/prime_factors.rs:38:5
[INFO] [stdout]   22:     0x5c91e4b9502d - codewars::prime_factors::basics_prime_factors::h23c622240c14f17d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/prime_factors.rs:46:5
[INFO] [stdout]   23:     0x5c91e4b95047 - codewars::prime_factors::basics_prime_factors::{{closure}}::h32ed1244f10a8807
[INFO] [stdout]                                at /opt/rustwide/workdir/src/prime_factors.rs:42:26
[INFO] [stdout]   24:     0x5c91e4b971c6 - core::ops::function::FnOnce::call_once::h93a7535204db6f02
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x5c91e4bdaecb - core::ops::function::FnOnce::call_once::h0217b30cfdee2e67
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x5c91e4bdaecb - test::__rust_begin_short_backtrace::h6d98714a1e28f556
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:663:18
[INFO] [stdout]   27:     0x5c91e4bee85a - test::run_test_in_process::{{closure}}::he2c70d2634d3a3cc
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:686:74
[INFO] [stdout]   28:     0x5c91e4bee85a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h40a0a825bcf17fdd
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   29:     0x5c91e4bee85a - std::panicking::catch_unwind::do_call::h6c8eb5dd6e7b5975
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:581:40
[INFO] [stdout]   30:     0x5c91e4bee85a - std::panicking::catch_unwind::h55455eac2972ad1e
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:544:19
[INFO] [stdout]   31:     0x5c91e4bee85a - std::panic::catch_unwind::h0025465150a5e558
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panic.rs:359:14
[INFO] [stdout]   32:     0x5c91e4bee85a - test::run_test_in_process::hb61e682f9b630fbc
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:686:27
[INFO] [stdout]   33:     0x5c91e4bee85a - test::run_test::{{closure}}::hc2c2a7a38ab176e2
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:607:43
[INFO] [stdout]   34:     0x5c91e4bc8af4 - test::run_test::{{closure}}::ha91867b85cd2a911
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:637:41
[INFO] [stdout]   35:     0x5c91e4bc8af4 - std::sys::backtrace::__rust_begin_short_backtrace::ha00a9fe02049c339
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:160:18
[INFO] [stdout]   36:     0x5c91e4bcc422 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::hd629fba9153dfb55
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/thread/lifecycle.rs:92:13
[INFO] [stdout]   37:     0x5c91e4bcc422 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4189018816a5c5d9
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   38:     0x5c91e4bcc422 - std::panicking::catch_unwind::do_call::hf9fcdbca3c2e9877
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:581:40
[INFO] [stdout]   39:     0x5c91e4bcc422 - std::panicking::catch_unwind::h97b92d88631c7c64
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:544:19
[INFO] [stdout]   40:     0x5c91e4bcc422 - std::panic::catch_unwind::ha77cdbb68e725e5e
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panic.rs:359:14
[INFO] [stdout]   41:     0x5c91e4bcc422 - std::thread::lifecycle::spawn_unchecked::{{closure}}::h511f05bc1a132253
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/thread/lifecycle.rs:90:26
[INFO] [stdout]   42:     0x5c91e4bcc422 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6b68b31e9b685cb8
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   43:     0x5c91e4c0d78f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h22a27d165e4e871d
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   44:     0x5c91e4c0d78f - std::sys::thread::unix::Thread::new::thread_start::h45cc87bb053add0f
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   45:     0x7f8430504aa4 - <unknown>
[INFO] [stdout]   46:     0x7f8430591a64 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     matrix_determinant::tests::sample_tests
[INFO] [stdout]     prime_factors::basics_prime_factors
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 41 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2121d3b5aadd6849f72be9cc3656be9a47f7a3af99b2df5572c4a88c244f5083", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2121d3b5aadd6849f72be9cc3656be9a47f7a3af99b2df5572c4a88c244f5083", kill_on_drop: false }`
[INFO] [stdout] 2121d3b5aadd6849f72be9cc3656be9a47f7a3af99b2df5572c4a88c244f5083
