[INFO] cloning repository https://github.com/TigerKim9/no-library
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TigerKim9/no-library" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTigerKim9%2Fno-library", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTigerKim9%2Fno-library'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b7bd275ed41e71b66d42097a9d7571ed5d4f704a
[INFO] checking TigerKim9/no-library against try#63132bd615c9bf75e93af8405d00064212331708 for pr-153975
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTigerKim9%2Fno-library" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/TigerKim9/no-library
[INFO] finished tweaking git repo https://github.com/TigerKim9/no-library
[INFO] tweaked toml for git repo https://github.com/TigerKim9/no-library written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TigerKim9/no-library on toolchain 63132bd615c9bf75e93af8405d00064212331708
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/TigerKim9/no-library 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" "+63132bd615c9bf75e93af8405d00064212331708" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking TigerKim9/no-library against try#63132bd615c9bf75e93af8405d00064212331708 for pr-153975
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTigerKim9%2Fno-library" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/TigerKim9/no-library
[INFO] finished tweaking git repo https://github.com/TigerKim9/no-library
[INFO] tweaked toml for git repo https://github.com/TigerKim9/no-library written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TigerKim9/no-library on toolchain 63132bd615c9bf75e93af8405d00064212331708
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/TigerKim9/no-library 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" "+63132bd615c9bf75e93af8405d00064212331708" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7307ef68c082e3f05c685e03afb31c82f3328c287eda1e9d63443ab036762a4a
[INFO] running `Command { std: "docker" "start" "-a" "7307ef68c082e3f05c685e03afb31c82f3328c287eda1e9d63443ab036762a4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7307ef68c082e3f05c685e03afb31c82f3328c287eda1e9d63443ab036762a4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7307ef68c082e3f05c685e03afb31c82f3328c287eda1e9d63443ab036762a4a", kill_on_drop: false }`
[INFO] [stdout] 7307ef68c082e3f05c685e03afb31c82f3328c287eda1e9d63443ab036762a4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79f342faaa4adaca55d747ae3a0fa566beeb12874065e953ccc2ffb315fcfa69
[INFO] running `Command { std: "docker" "start" "-a" "79f342faaa4adaca55d747ae3a0fa566beeb12874065e953ccc2ffb315fcfa69", kill_on_drop: false }`
[INFO] [stderr]     Checking no_library v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `len`, `is_empty`, `peek`, and `peek_mut` are never used
[INFO] [stdout]   --> src/data_structures/linked_list.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<T> LinkedList<T> {
[INFO] [stdout]    | --------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     pub fn peek_mut(&mut self) -> Option<&mut T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `with_capacity`, `peek`, `peek_mut`, `is_empty`, `len`, and `clear` are never used
[INFO] [stdout]   --> src/data_structures/stack.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<T> Stack<T> {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn with_capacity(capacity: usize) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn peek_mut(&mut self) -> Option<&mut T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn clear(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `peek`, `len`, and `is_empty` are never used
[INFO] [stdout]   --> src/data_structures/queue.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<T> Queue<T> {
[INFO] [stdout]    | ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 78 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/data_structures/binary_tree.rs:61:12
[INFO] [stdout]     |
[INFO] [stdout]  19 | impl<T: Ord> BinaryTree<T> {
[INFO] [stdout]     | -------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  61 |     pub fn search(&self, data: &T) -> bool {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  65 |     fn search_recursive(&self, node: &Link<T>, data: &T) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  81 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  86 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |     pub fn preorder(&self) -> Vec<&T> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 113 |     fn preorder_recursive<'a>(&'a self, node: &'a Link<T>, result: &mut Vec<&'a T>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 122 |     pub fn postorder(&self) -> Vec<&T> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 128 |     fn postorder_recursive<'a>(&'a self, node: &'a Link<T>, result: &mut Vec<&'a T>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/data_structures/hash_map.rs:37:12
[INFO] [stdout]     |
[INFO] [stdout]  23 | impl<K: Hash + Eq, V> HashMap<K, V> {
[INFO] [stdout]     | ----------------------------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  37 |     pub fn with_capacity(capacity: usize) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     pub fn get_mut(&mut self, key: &K) -> Option<&mut V> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 122 |     pub fn remove(&mut self, key: &K) -> Option<V> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 147 |     pub fn contains_key(&self, key: &K) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 152 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 157 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 162 |     pub fn clear(&mut self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `selection_sort` is never used
[INFO] [stdout]   --> src/algorithms/sorting.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn selection_sort<T: Ord>(arr: &mut [T]) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `insertion_sort` is never used
[INFO] [stdout]   --> src/algorithms/sorting.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn insertion_sort<T: Ord>(arr: &mut [T]) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `heap_sort` is never used
[INFO] [stdout]    --> src/algorithms/sorting.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 | pub fn heap_sort<T: Ord>(arr: &mut [T]) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `heapify` is never used
[INFO] [stdout]    --> src/algorithms/sorting.rs:158:4
[INFO] [stdout]     |
[INFO] [stdout] 158 | fn heapify<T: Ord>(arr: &mut [T], heap_size: usize, root: usize) {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `linear_search` is never used
[INFO] [stdout]  --> src/algorithms/searching.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn linear_search<T: PartialEq>(arr: &[T], target: &T) -> Option<usize> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `binary_search_recursive` is never used
[INFO] [stdout]   --> src/algorithms/searching.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn binary_search_recursive<T: Ord>(arr: &[T], target: &T) -> Option<usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `binary_search_recursive_helper` is never used
[INFO] [stdout]   --> src/algorithms/searching.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn binary_search_recursive_helper<T: Ord>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `jump_search` is never used
[INFO] [stdout]   --> src/algorithms/searching.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn jump_search<T: Ord>(arr: &[T], target: &T) -> Option<usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `interpolation_search` is never used
[INFO] [stdout]    --> src/algorithms/searching.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn interpolation_search(arr: &[i32], target: i32) -> Option<usize> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_edge_undirected`, `dfs_iterative`, `has_cycle`, `has_cycle_helper`, `topological_sort`, and `topological_sort_helper` are never used
[INFO] [stdout]    --> src/algorithms/graph.rs:24:12
[INFO] [stdout]     |
[INFO] [stdout]  10 | impl Graph {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  24 |     pub fn add_edge_undirected(&mut self, u: usize, v: usize) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  55 |     pub fn dfs_iterative(&self, start: usize) -> Vec<usize> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     pub fn has_cycle(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 115 |     fn has_cycle_helper(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 140 |     pub fn topological_sort(&self) -> Option<Vec<usize>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 158 |     fn topological_sort_helper(&self, vertex: usize, visited: &mut [bool], stack: &mut Vec<usize>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TcpEchoServer` is never constructed
[INFO] [stdout]   --> src/networking/tcp.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct TcpEchoServer {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `bind`, `run`, and `handle_client` are never used
[INFO] [stdout]   --> src/networking/tcp.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl TcpEchoServer {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 15 |     /// 지정된 주소에 바인딩된 서버를 생성합니다.
[INFO] [stdout] 16 |     pub fn bind(addr: &str) -> io::Result<Self> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn run(&self) -> io::Result<()> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn handle_client(mut stream: TcpStream) -> io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TcpClient` is never constructed
[INFO] [stdout]   --> src/networking/tcp.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub struct TcpClient {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `connect`, `send`, `receive`, and `send_and_receive` are never used
[INFO] [stdout]   --> src/networking/tcp.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 68 | impl TcpClient {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 69 |     /// 지정된 주소로 연결합니다.
[INFO] [stdout] 70 |     pub fn connect(addr: &str) -> io::Result<Self> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     pub fn send(&mut self, data: &[u8]) -> io::Result<usize> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     pub fn receive(&mut self, buffer: &mut [u8]) -> io::Result<usize> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 86 |     pub fn send_and_receive(&mut self, message: &str) -> io::Result<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `read_frame` and `write_frame` are never used
[INFO] [stdout]    --> src/networking/tcp.rs:112:12
[INFO] [stdout]     |
[INFO] [stdout] 101 | impl MessageFramer {
[INFO] [stdout]     | ------------------ associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 112 |     pub fn read_frame(stream: &mut TcpStream) -> io::Result<Vec<u8>> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 126 |     pub fn write_frame(stream: &mut TcpStream, message: &[u8]) -> io::Result<()> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `body` is never read
[INFO] [stdout]   --> src/networking/http.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct HttpRequest {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub body: Vec<u8>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `HttpRequest` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_bytes` is never used
[INFO] [stdout]    --> src/networking/http.rs:107:12
[INFO] [stdout]     |
[INFO] [stdout]  57 | impl HttpRequest {
[INFO] [stdout]     | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 107 |     pub fn to_bytes(&self) -> Vec<u8> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/networking/http.rs:170:12
[INFO] [stdout]     |
[INFO] [stdout] 152 | impl HttpResponse {
[INFO] [stdout]     | ----------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 170 |     pub fn not_found() -> Self {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 175 |     pub fn internal_error() -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 180 |     pub fn add_header(&mut self, key: String, value: String) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 193 |     pub fn set_text_body(&mut self, text: String) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 200 |     pub fn set_html_body(&mut self, html: String) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 214 |     pub fn to_bytes(&self) -> Vec<u8> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 240 |     pub fn parse(raw: &[u8]) -> Result<Self, String> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `len`, `is_empty`, and `peek_mut` are never used
[INFO] [stdout]   --> src/data_structures/linked_list.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<T> LinkedList<T> {
[INFO] [stdout]    | --------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     pub fn peek_mut(&mut self) -> Option<&mut T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `with_capacity`, `peek_mut`, and `clear` are never used
[INFO] [stdout]   --> src/data_structures/stack.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<T> Stack<T> {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn with_capacity(capacity: usize) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn peek_mut(&mut self) -> Option<&mut T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn clear(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_empty`, `postorder`, and `postorder_recursive` are never used
[INFO] [stdout]    --> src/data_structures/binary_tree.rs:86:12
[INFO] [stdout]     |
[INFO] [stdout]  19 | impl<T: Ord> BinaryTree<T> {
[INFO] [stdout]     | -------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  86 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 122 |     pub fn postorder(&self) -> Vec<&T> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 128 |     fn postorder_recursive<'a>(&'a self, node: &'a Link<T>, result: &mut Vec<&'a T>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `with_capacity`, `get_mut`, `contains_key`, `is_empty`, and `clear` are never used
[INFO] [stdout]    --> src/data_structures/hash_map.rs:37:12
[INFO] [stdout]     |
[INFO] [stdout]  23 | impl<K: Hash + Eq, V> HashMap<K, V> {
[INFO] [stdout]     | ----------------------------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  37 |     pub fn with_capacity(capacity: usize) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     pub fn get_mut(&mut self, key: &K) -> Option<&mut V> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 147 |     pub fn contains_key(&self, key: &K) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 157 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 162 |     pub fn clear(&mut self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_edge_undirected` and `dfs_iterative` are never used
[INFO] [stdout]   --> src/algorithms/graph.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Graph {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn add_edge_undirected(&mut self, u: usize, v: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn dfs_iterative(&self, start: usize) -> Vec<usize> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TcpEchoServer` is never constructed
[INFO] [stdout]   --> src/networking/tcp.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct TcpEchoServer {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `bind`, `run`, and `handle_client` are never used
[INFO] [stdout]   --> src/networking/tcp.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl TcpEchoServer {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 15 |     /// 지정된 주소에 바인딩된 서버를 생성합니다.
[INFO] [stdout] 16 |     pub fn bind(addr: &str) -> io::Result<Self> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn run(&self) -> io::Result<()> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn handle_client(mut stream: TcpStream) -> io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TcpClient` is never constructed
[INFO] [stdout]   --> src/networking/tcp.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub struct TcpClient {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `connect`, `send`, `receive`, and `send_and_receive` are never used
[INFO] [stdout]   --> src/networking/tcp.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 68 | impl TcpClient {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 69 |     /// 지정된 주소로 연결합니다.
[INFO] [stdout] 70 |     pub fn connect(addr: &str) -> io::Result<Self> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     pub fn send(&mut self, data: &[u8]) -> io::Result<usize> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     pub fn receive(&mut self, buffer: &mut [u8]) -> io::Result<usize> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 86 |     pub fn send_and_receive(&mut self, message: &str) -> io::Result<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `read_frame` and `write_frame` are never used
[INFO] [stdout]    --> src/networking/tcp.rs:112:12
[INFO] [stdout]     |
[INFO] [stdout] 101 | impl MessageFramer {
[INFO] [stdout]     | ------------------ associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 112 |     pub fn read_frame(stream: &mut TcpStream) -> io::Result<Vec<u8>> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 126 |     pub fn write_frame(stream: &mut TcpStream, message: &[u8]) -> io::Result<()> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `body` is never read
[INFO] [stdout]   --> src/networking/http.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct HttpRequest {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub body: Vec<u8>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `HttpRequest` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_bytes` is never used
[INFO] [stdout]    --> src/networking/http.rs:107:12
[INFO] [stdout]     |
[INFO] [stdout]  57 | impl HttpRequest {
[INFO] [stdout]     | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 107 |     pub fn to_bytes(&self) -> Vec<u8> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `not_found`, `internal_error`, `add_header`, `set_html_body`, `to_bytes`, and `parse` are never used
[INFO] [stdout]    --> src/networking/http.rs:170:12
[INFO] [stdout]     |
[INFO] [stdout] 152 | impl HttpResponse {
[INFO] [stdout]     | ----------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 170 |     pub fn not_found() -> Self {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 175 |     pub fn internal_error() -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 180 |     pub fn add_header(&mut self, key: String, value: String) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 200 |     pub fn set_html_body(&mut self, html: String) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 214 |     pub fn to_bytes(&self) -> Vec<u8> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 240 |     pub fn parse(raw: &[u8]) -> Result<Self, String> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "79f342faaa4adaca55d747ae3a0fa566beeb12874065e953ccc2ffb315fcfa69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79f342faaa4adaca55d747ae3a0fa566beeb12874065e953ccc2ffb315fcfa69", kill_on_drop: false }`
[INFO] [stdout] 79f342faaa4adaca55d747ae3a0fa566beeb12874065e953ccc2ffb315fcfa69
