[INFO] cloning repository https://github.com/UniStart2/codewars-rust-training
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/UniStart2/codewars-rust-training" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUniStart2%2Fcodewars-rust-training", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUniStart2%2Fcodewars-rust-training'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b5d2e0a39d03c080ba897f753e98afc97c865243
[INFO] testing UniStart2/codewars-rust-training against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUniStart2%2Fcodewars-rust-training" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/UniStart2/codewars-rust-training on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/UniStart2/codewars-rust-training
[INFO] finished tweaking git repo https://github.com/UniStart2/codewars-rust-training
[INFO] tweaked toml for git repo https://github.com/UniStart2/codewars-rust-training written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/UniStart2/codewars-rust-training 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50ec78caf1becfafcb0e4057e956d22bf5c0946bb5b5f6497ee26e66e902753a
[INFO] running `Command { std: "docker" "start" "-a" "50ec78caf1becfafcb0e4057e956d22bf5c0946bb5b5f6497ee26e66e902753a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50ec78caf1becfafcb0e4057e956d22bf5c0946bb5b5f6497ee26e66e902753a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50ec78caf1becfafcb0e4057e956d22bf5c0946bb5b5f6497ee26e66e902753a", kill_on_drop: false }`
[INFO] [stdout] 50ec78caf1becfafcb0e4057e956d22bf5c0946bb5b5f6497ee26e66e902753a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5522462fbd87e9e16f0a89ca4a4a59b1f147807ee58d442c8e84061757e63a7
[INFO] running `Command { std: "docker" "start" "-a" "f5522462fbd87e9e16f0a89ca4a4a59b1f147807ee58d442c8e84061757e63a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling float_eq v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-complex v0.4.3
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling rust-training v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/codewars/array_diff.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::read`
[INFO] [stdout]  --> src/codewars/array_diff.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/codewars/array_diff.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Shl`
[INFO] [stdout]  --> src/codewars/double_integer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Shl;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Div`, `Mul`
[INFO] [stdout]  --> src/codewars/going_to_zero_or_to_infinity.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Div, Mul};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/codewars/range_extraction.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     use std::cmp::max;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/codewars/range_extraction.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     use std::fmt::format;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `min`
[INFO] [stdout]  --> src/codewars/rectangle_into_square.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::{min, Ordering};
[INFO] [stdout]   |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]  --> src/codewars/all_balanced_parentheses.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn balanced_parens(n: u16) -> Vec<String> {
[INFO] [stdout]   |                    ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/codewars/common_denominator.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut simplify = l.iter()
[INFO] [stdout]   |         ----^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `balanced_parens` is never used
[INFO] [stdout]  --> src/codewars/all_balanced_parentheses.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn balanced_parens(n: u16) -> Vec<String> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array_diff` is never used
[INFO] [stdout]   --> src/codewars/array_diff.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn array_diff<T: PartialEq>(a: Vec<T>, b: Vec<T>) -> Vec<T>
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `convert_fracts` is never used
[INFO] [stdout]  --> src/codewars/common_denominator.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn convert_fracts(l: Vec<(i64, i64)>) -> Vec<(i64, i64)> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testing` is never used
[INFO] [stdout]   --> src/codewars/common_denominator.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn testing(l: Vec<(i64, i64)>, exp: Vec<(i64, i64)>) -> () {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `double_integer` is never used
[INFO] [stdout]  --> src/codewars/double_integer.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn double_integer(n: i32) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_next_square` is never used
[INFO] [stdout]  --> src/codewars/find_next_square.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn find_next_square(sq: u64) -> Option<u64> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `going` is never used
[INFO] [stdout]   --> src/codewars/going_to_zero_or_to_infinity.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn going(n: i32) -> f64 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `zeros` is never used
[INFO] [stdout]  --> src/codewars/number_of_trailing_zeros_of_n.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn zeros(n: u64) -> u64 {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `range_extraction` is never used
[INFO] [stdout]  --> src/codewars/range_extraction.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn range_extraction(a: &[i32]) -> String {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sq_in_rect` is never used
[INFO] [stdout]  --> src/codewars/rectangle_into_square.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | 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/codewars/rectangle_into_square.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn testing(lng: i32, wdth: i32, exp: Option<Vec<i32>>) -> () {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_words` is never used
[INFO] [stdout]  --> src/codewars/reverse_words.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn reverse_words(str: &str) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/codewars/string_with_end.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn solution(word: &str, ending: &str) -> bool {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unique_in_order` is never used
[INFO] [stdout]   --> src/codewars/unique_in_order.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn unique_in_order<T>(sequence: T) -> Vec<T::Item>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `order` is never used
[INFO] [stdout]   --> src/codewars/your_order_please.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn order(sentence: &str) -> String {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increment_string` is never used
[INFO] [stdout]  --> src/codewars/string_incrementer.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn increment_string(input: &str) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increment_string2` is never used
[INFO] [stdout]   --> src/codewars/string_incrementer.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn increment_string2(input: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.86s
[INFO] running `Command { std: "docker" "inspect" "f5522462fbd87e9e16f0a89ca4a4a59b1f147807ee58d442c8e84061757e63a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5522462fbd87e9e16f0a89ca4a4a59b1f147807ee58d442c8e84061757e63a7", kill_on_drop: false }`
[INFO] [stdout] f5522462fbd87e9e16f0a89ca4a4a59b1f147807ee58d442c8e84061757e63a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd3774942772709e015494704007b8f7d8f1dde467070ccd0c57378b3507eb8f
[INFO] running `Command { std: "docker" "start" "-a" "fd3774942772709e015494704007b8f7d8f1dde467070ccd0c57378b3507eb8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-training v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/codewars/array_diff.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::read`
[INFO] [stdout]  --> src/codewars/array_diff.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/codewars/array_diff.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Shl`
[INFO] [stdout]  --> src/codewars/double_integer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Shl;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Div`, `Mul`
[INFO] [stdout]  --> src/codewars/going_to_zero_or_to_infinity.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Div, Mul};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/codewars/range_extraction.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     use std::cmp::max;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/codewars/range_extraction.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     use std::fmt::format;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `min`
[INFO] [stdout]  --> src/codewars/rectangle_into_square.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::{min, Ordering};
[INFO] [stdout]   |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]  --> src/codewars/all_balanced_parentheses.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn balanced_parens(n: u16) -> Vec<String> {
[INFO] [stdout]   |                    ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/codewars/common_denominator.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut simplify = l.iter()
[INFO] [stdout]   |         ----^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increment_string2` is never used
[INFO] [stdout]   --> src/codewars/string_incrementer.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn increment_string2(input: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "fd3774942772709e015494704007b8f7d8f1dde467070ccd0c57378b3507eb8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd3774942772709e015494704007b8f7d8f1dde467070ccd0c57378b3507eb8f", kill_on_drop: false }`
[INFO] [stdout] fd3774942772709e015494704007b8f7d8f1dde467070ccd0c57378b3507eb8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 11d5c7f655e1171d928c008d08b86ba4b6f159c58b7ec7b31130751c3c2e62ba
[INFO] running `Command { std: "docker" "start" "-a" "11d5c7f655e1171d928c008d08b86ba4b6f159c58b7ec7b31130751c3c2e62ba", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::fmt::Debug`
[INFO] [stderr]  --> src/codewars/array_diff.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fmt::Debug;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::read`
[INFO] [stderr]  --> src/codewars/array_diff.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs::read;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Index`
[INFO] [stderr]  --> src/codewars/array_diff.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::ops::Index;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Shl`
[INFO] [stderr]  --> src/codewars/double_integer.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops::Shl;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Div`, `Mul`
[INFO] [stderr]  --> src/codewars/going_to_zero_or_to_infinity.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops::{Div, Mul};
[INFO] [stderr]   |                ^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::max`
[INFO] [stderr]  --> src/codewars/range_extraction.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     use std::cmp::max;
[INFO] [stderr]   |         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::format`
[INFO] [stderr]  --> src/codewars/range_extraction.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 |     use std::fmt::format;
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `min`
[INFO] [stderr]  --> src/codewars/rectangle_into_square.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cmp::{min, Ordering};
[INFO] [stderr]   |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]  --> src/codewars/all_balanced_parentheses.rs:1:20
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn balanced_parens(n: u16) -> Vec<String> {
[INFO] [stderr]   |                    ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/codewars/common_denominator.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let mut simplify = l.iter()
[INFO] [stderr]   |         ----^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `increment_string2` is never used
[INFO] [stderr]   --> src/codewars/string_incrementer.rs:51:4
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn increment_string2(input: &str) -> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-training` (bin "rust-training" test) generated 11 warnings (run `cargo fix --bin "rust-training" --tests` to apply 10 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_training-3023c3a7d0700790)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test codewars::number_of_trailing_zeros_of_n::tests::sample_tests ... ok
[INFO] [stdout] test codewars::range_extraction::tests::example ... ok
[INFO] [stdout] test codewars::double_integer::tests::sample_tests ... ok
[INFO] [stdout] test codewars::common_denominator::basics_convert_fracts ... ok
[INFO] [stdout] test codewars::reverse_words::sample_test ... ok
[INFO] [stdout] test codewars::array_diff::tests::returns_expected ... ok
[INFO] [stdout] test codewars::unique_in_order::tests::sample_test ... ok
[INFO] [stdout] test codewars::rectangle_into_square::tests_sq_in_rect ... ok
[INFO] [stdout] test codewars::going_to_zero_or_to_infinity::tests::basics_going ... ok
[INFO] [stdout] test codewars::find_next_square::tests::sample_tests ... ok
[INFO] [stdout] test codewars::your_order_please::tests::returns_expected ... ok
[INFO] [stdout] test codewars::string_with_end::returns_expected ... ok
[INFO] [stdout] test codewars::string_incrementer::tests::sample_tests ... ok
[INFO] [stdout] test codewars::all_balanced_parentheses::tests::sample_tests ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- codewars::all_balanced_parentheses::tests::sample_tests stdout ----
[INFO] [stdout] thread 'codewars::all_balanced_parentheses::tests::sample_tests' panicked at src/codewars/all_balanced_parentheses.rs:2:5:
[INFO] [stdout] not yet implemented
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x563a2123fb6c - std::backtrace_rs::backtrace::libunwind::trace::ha637c64ce894333a
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x563a2123fb6c - std::backtrace_rs::backtrace::trace_unsynchronized::h47f62dea28e0c88d
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x563a2123fb6c - std::sys_common::backtrace::_print_fmt::h9eef0abe20ede486
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x563a2123fb6c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hed7f999df88cc644
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x563a21269ea0 - core::fmt::rt::Argument::fmt::h1539a9308b8d058d
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x563a21269ea0 - core::fmt::write::h3a39390d8560d9c9
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x563a2123d51f - std::io::Write::write_fmt::h040b369f3a0f9cbc
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/io/mod.rs:1762:15
[INFO] [stdout]    7:     0x563a2123f954 - std::sys_common::backtrace::_print::h894006fb5c6f3d45
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x563a2123f954 - std::sys_common::backtrace::print::h23a2d212c6fff936
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x563a21241617 - std::panicking::default_hook::{{closure}}::h8a1d2ee00185001a
[INFO] [stdout]   10:     0x563a21241303 - std::panicking::default_hook::h6038f2eba384e475
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x563a211f1797 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h0ad024c9bdc6d768
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2021:9
[INFO] [stdout]   12:     0x563a211f1797 - test::test_main::{{closure}}::h7500b54257359db6
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x563a21241c28 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h1f8f335eaa9cfaee
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2021:9
[INFO] [stdout]   14:     0x563a21241c28 - std::panicking::rust_panic_with_hook::h2b5517d590cab22e
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x563a21241949 - std::panicking::begin_panic_handler::{{closure}}::h233112c06e0ef43e
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:649:13
[INFO] [stdout]   16:     0x563a21240036 - std::sys_common::backtrace::__rust_end_short_backtrace::h6e893f24d7ebbff8
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:170:18
[INFO] [stdout]   17:     0x563a212416e2 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x563a2119ccf5 - core::panicking::panic_fmt::hbf0e066aabfa482c
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x563a2119cd93 - core::panicking::panic::h195fc2a96298d4c3
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panicking.rs:127:5
[INFO] [stdout]   20:     0x563a211a1de5 - rust_training::codewars::all_balanced_parentheses::balanced_parens::hd4240d36718aebdb
[INFO] [stdout]                                at /opt/rustwide/workdir/src/codewars/all_balanced_parentheses.rs:2:5
[INFO] [stdout]   21:     0x563a211b41b6 - rust_training::codewars::all_balanced_parentheses::tests::do_test::h12ea9c0b734bdea3
[INFO] [stdout]                                at /opt/rustwide/workdir/src/codewars/all_balanced_parentheses.rs:10:26
[INFO] [stdout]   22:     0x563a211b4c33 - rust_training::codewars::all_balanced_parentheses::tests::sample_tests::hbf2e4caf9ef1264e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/codewars/all_balanced_parentheses.rs:24:13
[INFO] [stdout]   23:     0x563a211b4727 - rust_training::codewars::all_balanced_parentheses::tests::sample_tests::{{closure}}::hc9fd13de2a791daa
[INFO] [stdout]                                at /opt/rustwide/workdir/src/codewars/all_balanced_parentheses.rs:16:22
[INFO] [stdout]   24:     0x563a211b6306 - core::ops::function::FnOnce::call_once::hcad636e9ee4adb31
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x563a211f6def - core::ops::function::FnOnce::call_once::h2b5d431d5046312d
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x563a211f6def - test::__rust_begin_short_backtrace::h7714669af176e207
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:628:18
[INFO] [stdout]   27:     0x563a211f5e05 - test::run_test_in_process::{{closure}}::h85218797dcbcec12
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:651:60
[INFO] [stdout]   28:     0x563a211f5e05 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h76c106ea31c14d7b
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   29:     0x563a211f5e05 - std::panicking::try::do_call::h3bd5d0f6620ee946
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:552:40
[INFO] [stdout]   30:     0x563a211f5e05 - std::panicking::try::h232e535e4744fe31
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:516:19
[INFO] [stdout]   31:     0x563a211f5e05 - std::panic::catch_unwind::h3ce3bd6ca8dbac68
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panic.rs:142:14
[INFO] [stdout]   32:     0x563a211f5e05 - test::run_test_in_process::hc97b257c9621286a
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:651:27
[INFO] [stdout]   33:     0x563a211f5e05 - test::run_test::{{closure}}::h2aa798823a438d38
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:574:43
[INFO] [stdout]   34:     0x563a211be0c6 - test::run_test::{{closure}}::h87d231c78fb59832
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:602:41
[INFO] [stdout]   35:     0x563a211be0c6 - std::sys_common::backtrace::__rust_begin_short_backtrace::he6df152596625789
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:154:18
[INFO] [stdout]   36:     0x563a211c3177 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::ha94be15d1e0acf36
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   37:     0x563a211c3177 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9dc6bd6372f16606
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   38:     0x563a211c3177 - std::panicking::try::do_call::h9057517f80303cd4
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:552:40
[INFO] [stdout]   39:     0x563a211c3177 - std::panicking::try::he3a30b11ee45340c
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:516:19
[INFO] [stdout]   40:     0x563a211c3177 - std::panic::catch_unwind::h410458cfd3528b8b
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panic.rs:142:14
[INFO] [stdout]   41:     0x563a211c3177 - std::thread::Builder::spawn_unchecked_::{{closure}}::h72ac3bdb567b737b
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   42:     0x563a211c3177 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h38f34da3654a8344
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   43:     0x563a212466b5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hc7eafaff61e32df9
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2007:9
[INFO] [stdout]   44:     0x563a212466b5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6ba4a5de48dd2304
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2007:9
[INFO] [stdout]   45:     0x563a212466b5 - std::sys::unix::thread::Thread::new::thread_start::he469335aef763e45
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   46:     0x7f86eecf4ac3 - <unknown>
[INFO] [stdout]   47:     0x7f86eed85bf4 - __clone
[INFO] [stdout]   48:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     codewars::all_balanced_parentheses::tests::sample_tests
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 13 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rust-training`
[INFO] running `Command { std: "docker" "inspect" "11d5c7f655e1171d928c008d08b86ba4b6f159c58b7ec7b31130751c3c2e62ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11d5c7f655e1171d928c008d08b86ba4b6f159c58b7ec7b31130751c3c2e62ba", kill_on_drop: false }`
[INFO] [stdout] 11d5c7f655e1171d928c008d08b86ba4b6f159c58b7ec7b31130751c3c2e62ba
[INFO] testing UniStart2/codewars-rust-training against beta-2023-12-22 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUniStart2%2Fcodewars-rust-training" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/UniStart2/codewars-rust-training on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/UniStart2/codewars-rust-training
[INFO] finished tweaking git repo https://github.com/UniStart2/codewars-rust-training
[INFO] tweaked toml for git repo https://github.com/UniStart2/codewars-rust-training written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/UniStart2/codewars-rust-training 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" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1a730ae8fb05565c60d38b2764861fe5e22eb1e078cc2da2d04eda104c4eb05
[INFO] running `Command { std: "docker" "start" "-a" "f1a730ae8fb05565c60d38b2764861fe5e22eb1e078cc2da2d04eda104c4eb05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1a730ae8fb05565c60d38b2764861fe5e22eb1e078cc2da2d04eda104c4eb05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1a730ae8fb05565c60d38b2764861fe5e22eb1e078cc2da2d04eda104c4eb05", kill_on_drop: false }`
[INFO] [stdout] f1a730ae8fb05565c60d38b2764861fe5e22eb1e078cc2da2d04eda104c4eb05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dba4402f4ac65001382b7c408151cf5d4f85cb2dc6cbe96f7117da20e04f6e1
[INFO] running `Command { std: "docker" "start" "-a" "3dba4402f4ac65001382b7c408151cf5d4f85cb2dc6cbe96f7117da20e04f6e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling float_eq v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-complex v0.4.3
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling rust-training v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/codewars/array_diff.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::read`
[INFO] [stdout]  --> src/codewars/array_diff.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/codewars/array_diff.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Shl`
[INFO] [stdout]  --> src/codewars/double_integer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Shl;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Div`, `Mul`
[INFO] [stdout]  --> src/codewars/going_to_zero_or_to_infinity.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Div, Mul};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/codewars/range_extraction.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     use std::cmp::max;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/codewars/range_extraction.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     use std::fmt::format;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `min`
[INFO] [stdout]  --> src/codewars/rectangle_into_square.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::{min, Ordering};
[INFO] [stdout]   |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]  --> src/codewars/all_balanced_parentheses.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn balanced_parens(n: u16) -> Vec<String> {
[INFO] [stdout]   |                    ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/codewars/common_denominator.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut simplify = l.iter()
[INFO] [stdout]   |         ----^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `balanced_parens` is never used
[INFO] [stdout]  --> src/codewars/all_balanced_parentheses.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn balanced_parens(n: u16) -> Vec<String> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array_diff` is never used
[INFO] [stdout]   --> src/codewars/array_diff.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn array_diff<T: PartialEq>(a: Vec<T>, b: Vec<T>) -> Vec<T>
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `convert_fracts` is never used
[INFO] [stdout]  --> src/codewars/common_denominator.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn convert_fracts(l: Vec<(i64, i64)>) -> Vec<(i64, i64)> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testing` is never used
[INFO] [stdout]   --> src/codewars/common_denominator.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn testing(l: Vec<(i64, i64)>, exp: Vec<(i64, i64)>) -> () {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `double_integer` is never used
[INFO] [stdout]  --> src/codewars/double_integer.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn double_integer(n: i32) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_next_square` is never used
[INFO] [stdout]  --> src/codewars/find_next_square.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn find_next_square(sq: u64) -> Option<u64> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `going` is never used
[INFO] [stdout]   --> src/codewars/going_to_zero_or_to_infinity.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn going(n: i32) -> f64 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `zeros` is never used
[INFO] [stdout]  --> src/codewars/number_of_trailing_zeros_of_n.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn zeros(n: u64) -> u64 {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `range_extraction` is never used
[INFO] [stdout]  --> src/codewars/range_extraction.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn range_extraction(a: &[i32]) -> String {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sq_in_rect` is never used
[INFO] [stdout]  --> src/codewars/rectangle_into_square.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | 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/codewars/rectangle_into_square.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn testing(lng: i32, wdth: i32, exp: Option<Vec<i32>>) -> () {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_words` is never used
[INFO] [stdout]  --> src/codewars/reverse_words.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn reverse_words(str: &str) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/codewars/string_with_end.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn solution(word: &str, ending: &str) -> bool {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unique_in_order` is never used
[INFO] [stdout]   --> src/codewars/unique_in_order.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn unique_in_order<T>(sequence: T) -> Vec<T::Item>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `order` is never used
[INFO] [stdout]   --> src/codewars/your_order_please.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn order(sentence: &str) -> String {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increment_string` is never used
[INFO] [stdout]  --> src/codewars/string_incrementer.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn increment_string(input: &str) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increment_string2` is never used
[INFO] [stdout]   --> src/codewars/string_incrementer.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn increment_string2(input: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.78s
[INFO] running `Command { std: "docker" "inspect" "3dba4402f4ac65001382b7c408151cf5d4f85cb2dc6cbe96f7117da20e04f6e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dba4402f4ac65001382b7c408151cf5d4f85cb2dc6cbe96f7117da20e04f6e1", kill_on_drop: false }`
[INFO] [stdout] 3dba4402f4ac65001382b7c408151cf5d4f85cb2dc6cbe96f7117da20e04f6e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0643298b96f388a9ea0c8df5f461937c385da1a2818adb549a8f8b1f842c161a
[INFO] running `Command { std: "docker" "start" "-a" "0643298b96f388a9ea0c8df5f461937c385da1a2818adb549a8f8b1f842c161a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-training v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/codewars/array_diff.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::read`
[INFO] [stdout]  --> src/codewars/array_diff.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/codewars/array_diff.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Shl`
[INFO] [stdout]  --> src/codewars/double_integer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Shl;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Div`, `Mul`
[INFO] [stdout]  --> src/codewars/going_to_zero_or_to_infinity.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Div, Mul};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/codewars/range_extraction.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     use std::cmp::max;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/codewars/range_extraction.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     use std::fmt::format;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `min`
[INFO] [stdout]  --> src/codewars/rectangle_into_square.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::{min, Ordering};
[INFO] [stdout]   |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]  --> src/codewars/all_balanced_parentheses.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn balanced_parens(n: u16) -> Vec<String> {
[INFO] [stdout]   |                    ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/codewars/common_denominator.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut simplify = l.iter()
[INFO] [stdout]   |         ----^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increment_string2` is never used
[INFO] [stdout]   --> src/codewars/string_incrementer.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn increment_string2(input: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "0643298b96f388a9ea0c8df5f461937c385da1a2818adb549a8f8b1f842c161a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0643298b96f388a9ea0c8df5f461937c385da1a2818adb549a8f8b1f842c161a", kill_on_drop: false }`
[INFO] [stdout] 0643298b96f388a9ea0c8df5f461937c385da1a2818adb549a8f8b1f842c161a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fbc3885112883eae285f7b08e99118fa7d1791d012b0e03d0cd9c0359d1d1186
[INFO] running `Command { std: "docker" "start" "-a" "fbc3885112883eae285f7b08e99118fa7d1791d012b0e03d0cd9c0359d1d1186", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::fmt::Debug`
[INFO] [stderr]  --> src/codewars/array_diff.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fmt::Debug;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::read`
[INFO] [stderr]  --> src/codewars/array_diff.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs::read;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Index`
[INFO] [stderr]  --> src/codewars/array_diff.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::ops::Index;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Shl`
[INFO] [stderr]  --> src/codewars/double_integer.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops::Shl;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Div`, `Mul`
[INFO] [stderr]  --> src/codewars/going_to_zero_or_to_infinity.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops::{Div, Mul};
[INFO] [stderr]   |                ^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::max`
[INFO] [stderr]  --> src/codewars/range_extraction.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     use std::cmp::max;
[INFO] [stderr]   |         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::format`
[INFO] [stderr]  --> src/codewars/range_extraction.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 |     use std::fmt::format;
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `min`
[INFO] [stderr]  --> src/codewars/rectangle_into_square.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cmp::{min, Ordering};
[INFO] [stderr]   |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]  --> src/codewars/all_balanced_parentheses.rs:1:20
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn balanced_parens(n: u16) -> Vec<String> {
[INFO] [stderr]   |                    ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/codewars/common_denominator.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let mut simplify = l.iter()
[INFO] [stderr]   |         ----^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `increment_string2` is never used
[INFO] [stderr]   --> src/codewars/string_incrementer.rs:51:4
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn increment_string2(input: &str) -> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-training` (bin "rust-training" test) generated 11 warnings (run `cargo fix --bin "rust-training" --tests` to apply 10 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_training-43a9fdf4c4b31d55)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test codewars::array_diff::tests::returns_expected ... ok
[INFO] [stdout] test codewars::common_denominator::basics_convert_fracts ... ok
[INFO] [stdout] test codewars::number_of_trailing_zeros_of_n::tests::sample_tests ... ok
[INFO] [stdout] test codewars::going_to_zero_or_to_infinity::tests::basics_going ... ok
[INFO] [stdout] test codewars::rectangle_into_square::tests_sq_in_rect ... ok
[INFO] [stdout] test codewars::double_integer::tests::sample_tests ... ok
[INFO] [stdout] test codewars::find_next_square::tests::sample_tests ... ok
[INFO] [stdout] test codewars::string_incrementer::tests::sample_tests ... ok
[INFO] [stdout] test codewars::reverse_words::sample_test ... ok
[INFO] [stdout] test codewars::unique_in_order::tests::sample_test ... ok
[INFO] [stdout] test codewars::your_order_please::tests::returns_expected ... ok
[INFO] [stdout] test codewars::range_extraction::tests::example ... ok
[INFO] [stdout] test codewars::string_with_end::returns_expected ... ok
[INFO] [stdout] test codewars::all_balanced_parentheses::tests::sample_tests ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- codewars::all_balanced_parentheses::tests::sample_tests stdout ----
[INFO] [stdout] thread 'codewars::all_balanced_parentheses::tests::sample_tests' panicked at src/codewars/all_balanced_parentheses.rs:2:5:
[INFO] [stdout] not yet implemented
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55ff5fe7a416 - std::backtrace_rs::backtrace::libunwind::trace::h261606ad26a499c1
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55ff5fe7a416 - std::backtrace_rs::backtrace::trace_unsynchronized::hd183f0625477fb28
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55ff5fe7a416 - std::sys_common::backtrace::_print_fmt::hd7f8fef21b4eda67
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55ff5fe7a416 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h623d9b51f2f453f1
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55ff5fea3a40 - core::fmt::rt::Argument::fmt::h9f417ac76a86f368
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55ff5fea3a40 - core::fmt::write::hc9b6faf4ac2aeff7
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55ff5fe77e7f - std::io::Write::write_fmt::he04625a3a989fec3
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x55ff5fe7a1f4 - std::sys_common::backtrace::_print::hd5d66399c7df88a2
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55ff5fe7a1f4 - std::sys_common::backtrace::print::he81ed2da642d37e5
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55ff5fe7bf67 - std::panicking::default_hook::{{closure}}::h85773f4fa117163d
[INFO] [stdout]   10:     0x55ff5fe7bc4d - std::panicking::default_hook::h6a1694a91d09b278
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55ff5fe2ba17 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h616ac37fa3cd6c8f
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x55ff5fe2ba17 - test::test_main::{{closure}}::h00d84697cefdcbb6
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x55ff5fe7c586 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hcb3fe3b9bb537ba8
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x55ff5fe7c586 - std::panicking::rust_panic_with_hook::h0a7ad96e90f7145b
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x55ff5fe7c299 - std::panicking::begin_panic_handler::{{closure}}::h7919090525c6485e
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:649:13
[INFO] [stdout]   16:     0x55ff5fe7a916 - std::sys_common::backtrace::__rust_end_short_backtrace::hf3289479464f7dfe
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55ff5fe7c030 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x55ff5fdd5cd5 - core::panicking::panic_fmt::hcc9f77c5c132af55
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55ff5fdd5d93 - core::panicking::panic::h5a1259c1164bd480
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panicking.rs:144:5
[INFO] [stdout]   20:     0x55ff5fdf5d45 - rust_training::codewars::all_balanced_parentheses::balanced_parens::he9a379e13a2697a9
[INFO] [stdout]                                at /opt/rustwide/workdir/src/codewars/all_balanced_parentheses.rs:2:5
[INFO] [stdout]   21:     0x55ff5fdf3946 - rust_training::codewars::all_balanced_parentheses::tests::do_test::hbd207f0d68a28b88
[INFO] [stdout]                                at /opt/rustwide/workdir/src/codewars/all_balanced_parentheses.rs:10:26
[INFO] [stdout]   22:     0x55ff5fdf429b - rust_training::codewars::all_balanced_parentheses::tests::sample_tests::h344affccce10b8d1
[INFO] [stdout]                                at /opt/rustwide/workdir/src/codewars/all_balanced_parentheses.rs:24:13
[INFO] [stdout]   23:     0x55ff5fdf3d97 - rust_training::codewars::all_balanced_parentheses::tests::sample_tests::{{closure}}::heb6783be19e942c7
[INFO] [stdout]                                at /opt/rustwide/workdir/src/codewars/all_balanced_parentheses.rs:16:22
[INFO] [stdout]   24:     0x55ff5fde8556 - core::ops::function::FnOnce::call_once::h4a46d85919153679
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55ff5fe312ef - core::ops::function::FnOnce::call_once::hd64d26f405258157
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x55ff5fe312ef - test::__rust_begin_short_backtrace::he21b0b7a6d731bf9
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:627:18
[INFO] [stdout]   27:     0x55ff5fe30071 - test::run_test_in_process::{{closure}}::hf5c73986d7bdfde2
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:650:60
[INFO] [stdout]   28:     0x55ff5fe30071 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h330011ad032aadc0
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   29:     0x55ff5fe30071 - std::panicking::try::do_call::he61b0a958b795a41
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:552:40
[INFO] [stdout]   30:     0x55ff5fe30071 - std::panicking::try::h7309da130f906eb7
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:516:19
[INFO] [stdout]   31:     0x55ff5fe30071 - std::panic::catch_unwind::hc5c3a06fdaf0a92a
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panic.rs:142:14
[INFO] [stdout]   32:     0x55ff5fe30071 - test::run_test_in_process::h7e7b7c71c3324e0f
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:650:27
[INFO] [stdout]   33:     0x55ff5fe30071 - test::run_test::{{closure}}::h1f509f28f5cf20b1
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:573:43
[INFO] [stdout]   34:     0x55ff5fdf73a6 - test::run_test::{{closure}}::h1754218abf443f6d
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:601:41
[INFO] [stdout]   35:     0x55ff5fdf73a6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h2ee174b9d5954948
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   36:     0x55ff5fdfc407 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hf60bee9c1a17ef09
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   37:     0x55ff5fdfc407 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h33d0dddec5216160
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   38:     0x55ff5fdfc407 - std::panicking::try::do_call::h144b3048b546f835
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:552:40
[INFO] [stdout]   39:     0x55ff5fdfc407 - std::panicking::try::h978244d04646189f
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:516:19
[INFO] [stdout]   40:     0x55ff5fdfc407 - std::panic::catch_unwind::hdf436369d188fe86
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panic.rs:142:14
[INFO] [stdout]   41:     0x55ff5fdfc407 - std::thread::Builder::spawn_unchecked_::{{closure}}::h87329cbdd33c79ec
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   42:     0x55ff5fdfc407 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h401abbe67897d450
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   43:     0x55ff5fe81035 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5d7c8f150ab9c84c
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   44:     0x55ff5fe81035 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h570d5b005c242c15
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   45:     0x55ff5fe81035 - std::sys::unix::thread::Thread::new::thread_start::h36b0a20c0b2361ad
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   46:     0x7f1cfa386ac3 - <unknown>
[INFO] [stdout]   47:     0x7f1cfa417bf4 - __clone
[INFO] [stdout]   48:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     codewars::all_balanced_parentheses::tests::sample_tests
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 13 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rust-training`
[INFO] running `Command { std: "docker" "inspect" "fbc3885112883eae285f7b08e99118fa7d1791d012b0e03d0cd9c0359d1d1186", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbc3885112883eae285f7b08e99118fa7d1791d012b0e03d0cd9c0359d1d1186", kill_on_drop: false }`
[INFO] [stdout] fbc3885112883eae285f7b08e99118fa7d1791d012b0e03d0cd9c0359d1d1186
