[INFO] cloning repository https://github.com/jerrymusaga/algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jerrymusaga/algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjerrymusaga%2Falgorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjerrymusaga%2Falgorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c32504c726338922ff6788e29fa19843307921ac
[INFO] testing jerrymusaga/algorithms against beta-2025-09-21 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjerrymusaga%2Falgorithms" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jerrymusaga/algorithms
[INFO] finished tweaking git repo https://github.com/jerrymusaga/algorithms
[INFO] tweaked toml for git repo https://github.com/jerrymusaga/algorithms written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jerrymusaga/algorithms on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jerrymusaga/algorithms 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2763506cb3561823d08bcb34f763f2a7dc986d049ac87acf19209a3ed3a71045
[INFO] running `Command { std: "docker" "start" "-a" "2763506cb3561823d08bcb34f763f2a7dc986d049ac87acf19209a3ed3a71045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2763506cb3561823d08bcb34f763f2a7dc986d049ac87acf19209a3ed3a71045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2763506cb3561823d08bcb34f763f2a7dc986d049ac87acf19209a3ed3a71045", kill_on_drop: false }`
[INFO] [stdout] 2763506cb3561823d08bcb34f763f2a7dc986d049ac87acf19209a3ed3a71045
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f57074ccd383688f33c8b173ac00f5e0f137de8f5713625e4083c271cee58c3d
[INFO] running `Command { std: "docker" "start" "-a" "f57074ccd383688f33c8b173ac00f5e0f137de8f5713625e4083c271cee58c3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling keccak v0.1.5
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling sha3 v0.10.8
[INFO] [stderr]    Compiling algo_with_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `new_head`
[INFO] [stdout]   --> src/doublylinkedlist.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let new_head = Some(Rc::new(RefCell::new(Node {
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_head`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/singlylinkedlist.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LinkedList` is never constructed
[INFO] [stdout]  --> src/singlylinkedlist.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct LinkedList {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add`, `remove`, and `print` are never used
[INFO] [stdout]   --> src/singlylinkedlist.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl LinkedList {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 13 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn add(&mut self, element: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn remove(&mut self) -> Option<i32> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     fn print(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Pointer` is never used
[INFO] [stdout]   --> src/singlylinkedlist.rs:68:6
[INFO] [stdout]    |
[INFO] [stdout] 68 | type Pointer = Option<Box<Node>>;
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/singlylinkedlist.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyNode` is never constructed
[INFO] [stdout]  --> src/binarytree.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct MyNode<T>{
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/binarytree.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<T> MyNode<T>{
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] 13 |     fn new(value: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyBinaryTree` is never constructed
[INFO] [stdout]   --> src/binarytree.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct MyBinaryTree<T>{
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert_new_node`, `breadth_first`, `dfs`, and `dfs_recursive` are never used
[INFO] [stdout]   --> src/binarytree.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl<T:std::fmt::Debug> MyBinaryTree<T>{
[INFO] [stdout]    | --------------------------------------- associated items in this implementation
[INFO] [stdout] 28 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn insert_new_node(&mut self, value: T){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn breadth_first(&mut self){
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn dfs(&self) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     fn dfs_recursive(my_node: &Option<Box<MyNode<T>>>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/binarytree.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bubblesort` is never used
[INFO] [stdout]  --> src/bubblesort.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn bubblesort(mut array: Vec<isize>) -> Vec<isize> {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/bubblesort.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/doublylinkedlist.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Node{
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DoublyLinkedList` is never constructed
[INFO] [stdout]  --> src/doublylinkedlist.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct DoublyLinkedList {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `add` are never used
[INFO] [stdout]   --> src/doublylinkedlist.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl DoublyLinkedList {
[INFO] [stdout]    | --------------------- associated items in this implementation
[INFO] [stdout] 15 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn add(&mut self, element: i32){
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Pointer` is never used
[INFO] [stdout]   --> src/doublylinkedlist.rs:37:6
[INFO] [stdout]    |
[INFO] [stdout] 37 | type Pointer = Option<Rc<RefCell<Node>>>;
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.65s
[INFO] running `Command { std: "docker" "inspect" "f57074ccd383688f33c8b173ac00f5e0f137de8f5713625e4083c271cee58c3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f57074ccd383688f33c8b173ac00f5e0f137de8f5713625e4083c271cee58c3d", kill_on_drop: false }`
[INFO] [stdout] f57074ccd383688f33c8b173ac00f5e0f137de8f5713625e4083c271cee58c3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da3eaee3a8dd4a8e63708f972594f9fe807b370b4c9408a190a22ff02116c42e
[INFO] running `Command { std: "docker" "start" "-a" "da3eaee3a8dd4a8e63708f972594f9fe807b370b4c9408a190a22ff02116c42e", kill_on_drop: false }`
[INFO] [stderr]    Compiling algo_with_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `new_head`
[INFO] [stdout]   --> src/doublylinkedlist.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let new_head = Some(Rc::new(RefCell::new(Node {
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_head`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/singlylinkedlist.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LinkedList` is never constructed
[INFO] [stdout]  --> src/singlylinkedlist.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct LinkedList {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add`, `remove`, and `print` are never used
[INFO] [stdout]   --> src/singlylinkedlist.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl LinkedList {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 13 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn add(&mut self, element: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn remove(&mut self) -> Option<i32> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     fn print(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Pointer` is never used
[INFO] [stdout]   --> src/singlylinkedlist.rs:68:6
[INFO] [stdout]    |
[INFO] [stdout] 68 | type Pointer = Option<Box<Node>>;
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/singlylinkedlist.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyNode` is never constructed
[INFO] [stdout]  --> src/binarytree.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct MyNode<T>{
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/binarytree.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<T> MyNode<T>{
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] 13 |     fn new(value: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyBinaryTree` is never constructed
[INFO] [stdout]   --> src/binarytree.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct MyBinaryTree<T>{
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert_new_node`, `breadth_first`, `dfs`, and `dfs_recursive` are never used
[INFO] [stdout]   --> src/binarytree.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl<T:std::fmt::Debug> MyBinaryTree<T>{
[INFO] [stdout]    | --------------------------------------- associated items in this implementation
[INFO] [stdout] 28 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn insert_new_node(&mut self, value: T){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn breadth_first(&mut self){
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn dfs(&self) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     fn dfs_recursive(my_node: &Option<Box<MyNode<T>>>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/binarytree.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bubblesort` is never used
[INFO] [stdout]  --> src/bubblesort.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn bubblesort(mut array: Vec<isize>) -> Vec<isize> {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/bubblesort.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/doublylinkedlist.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Node{
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DoublyLinkedList` is never constructed
[INFO] [stdout]  --> src/doublylinkedlist.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct DoublyLinkedList {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `add` are never used
[INFO] [stdout]   --> src/doublylinkedlist.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl DoublyLinkedList {
[INFO] [stdout]    | --------------------- associated items in this implementation
[INFO] [stdout] 15 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn add(&mut self, element: i32){
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Pointer` is never used
[INFO] [stdout]   --> src/doublylinkedlist.rs:37:6
[INFO] [stdout]    |
[INFO] [stdout] 37 | type Pointer = Option<Rc<RefCell<Node>>>;
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "da3eaee3a8dd4a8e63708f972594f9fe807b370b4c9408a190a22ff02116c42e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da3eaee3a8dd4a8e63708f972594f9fe807b370b4c9408a190a22ff02116c42e", kill_on_drop: false }`
[INFO] [stdout] da3eaee3a8dd4a8e63708f972594f9fe807b370b4c9408a190a22ff02116c42e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ca3d38906e1efa8ae19ec62564de213bf2ded84194bf0530b6cdb932a1da815c
[INFO] running `Command { std: "docker" "start" "-a" "ca3d38906e1efa8ae19ec62564de213bf2ded84194bf0530b6cdb932a1da815c", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `new_head`
[INFO] [stderr]   --> src/doublylinkedlist.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let new_head = Some(Rc::new(RefCell::new(Node {
[INFO] [stderr]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_head`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Node` is never constructed
[INFO] [stderr]  --> src/singlylinkedlist.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Node {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `LinkedList` is never constructed
[INFO] [stderr]  --> src/singlylinkedlist.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | struct LinkedList {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `add`, `remove`, and `print` are never used
[INFO] [stderr]   --> src/singlylinkedlist.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl LinkedList {
[INFO] [stderr]    | --------------- associated items in this implementation
[INFO] [stderr] 13 |     fn new() -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 19 |     fn add(&mut self, element: i32) {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 48 |     fn remove(&mut self) -> Option<i32> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 58 |     fn print(&self) {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `Pointer` is never used
[INFO] [stderr]   --> src/singlylinkedlist.rs:68:6
[INFO] [stderr]    |
[INFO] [stderr] 68 | type Pointer = Option<Box<Node>>;
[INFO] [stderr]    |      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `run` is never used
[INFO] [stderr]   --> src/singlylinkedlist.rs:70:8
[INFO] [stderr]    |
[INFO] [stderr] 70 | pub fn run() {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MyNode` is never constructed
[INFO] [stderr]  --> src/binarytree.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct MyNode<T>{
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/binarytree.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl<T> MyNode<T>{
[INFO] [stderr]    | ----------------- associated function in this implementation
[INFO] [stderr] 13 |     fn new(value: T) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MyBinaryTree` is never constructed
[INFO] [stderr]   --> src/binarytree.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | struct MyBinaryTree<T>{
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `insert_new_node`, `breadth_first`, `dfs`, and `dfs_recursive` are never used
[INFO] [stderr]   --> src/binarytree.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 27 | impl<T:std::fmt::Debug> MyBinaryTree<T>{
[INFO] [stderr]    | --------------------------------------- associated items in this implementation
[INFO] [stderr] 28 |     fn new() -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 34 |     fn insert_new_node(&mut self, value: T){
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 41 |     fn breadth_first(&mut self){
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 63 |     fn dfs(&self) {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 68 |     fn dfs_recursive(my_node: &Option<Box<MyNode<T>>>) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `run` is never used
[INFO] [stderr]   --> src/binarytree.rs:76:8
[INFO] [stderr]    |
[INFO] [stderr] 76 | pub fn run() {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `bubblesort` is never used
[INFO] [stderr]  --> src/bubblesort.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn bubblesort(mut array: Vec<isize>) -> Vec<isize> {
[INFO] [stderr]   |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `run` is never used
[INFO] [stderr]   --> src/bubblesort.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn run() {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Node` is never constructed
[INFO] [stderr]  --> src/doublylinkedlist.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Node{
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `DoublyLinkedList` is never constructed
[INFO] [stderr]  --> src/doublylinkedlist.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct DoublyLinkedList {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `add` are never used
[INFO] [stderr]   --> src/doublylinkedlist.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | impl DoublyLinkedList {
[INFO] [stderr]    | --------------------- associated items in this implementation
[INFO] [stderr] 15 |     fn new() -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 22 |     fn add(&mut self, element: i32){
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `Pointer` is never used
[INFO] [stderr]   --> src/doublylinkedlist.rs:37:6
[INFO] [stderr]    |
[INFO] [stderr] 37 | type Pointer = Option<Rc<RefCell<Node>>>;
[INFO] [stderr]    |      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `algo_with_rust` (bin "algo_with_rust" test) generated 17 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/algo_with_rust-613c74356e84e95a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ca3d38906e1efa8ae19ec62564de213bf2ded84194bf0530b6cdb932a1da815c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca3d38906e1efa8ae19ec62564de213bf2ded84194bf0530b6cdb932a1da815c", kill_on_drop: false }`
[INFO] [stdout] ca3d38906e1efa8ae19ec62564de213bf2ded84194bf0530b6cdb932a1da815c