[INFO] cloning repository https://github.com/kyunghyunHan/-Algorithm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kyunghyunHan/-Algorithm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FkyunghyunHan%2F-Algorithm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FkyunghyunHan%2F-Algorithm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 45c95d95b0e90f30e84704ace279be8537524219
[INFO] checking kyunghyunHan/-Algorithm against try#15e8bc6907ab2b3623cb52acc726f4787458df64 for pr-141352
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FkyunghyunHan%2F-Algorithm" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kyunghyunHan/-Algorithm on toolchain 15e8bc6907ab2b3623cb52acc726f4787458df64
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kyunghyunHan/-Algorithm
[INFO] finished tweaking git repo https://github.com/kyunghyunHan/-Algorithm
[INFO] tweaked toml for git repo https://github.com/kyunghyunHan/-Algorithm written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kyunghyunHan/-Algorithm 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" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd749e58630c86b0bc2fdc1660a6b907a6b597c71a076688cee37f9c0bd8f40c
[INFO] running `Command { std: "docker" "start" "-a" "fd749e58630c86b0bc2fdc1660a6b907a6b597c71a076688cee37f9c0bd8f40c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd749e58630c86b0bc2fdc1660a6b907a6b597c71a076688cee37f9c0bd8f40c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd749e58630c86b0bc2fdc1660a6b907a6b597c71a076688cee37f9c0bd8f40c", kill_on_drop: false }`
[INFO] [stdout] fd749e58630c86b0bc2fdc1660a6b907a6b597c71a076688cee37f9c0bd8f40c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f7a99125bf03647bf011facc3489080472a772d7881df7b02ba8038012bf754
[INFO] running `Command { std: "docker" "start" "-a" "6f7a99125bf03647bf011facc3489080472a772d7881df7b02ba8038012bf754", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.87
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking algorithm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/algorithms/backtracking/knights_tour/warnsdorffs_path.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `BufReader`, `BufWriter`, `Write`, `stdin`, and `stdout`
[INFO] [stdout]  --> src/conding_test/ahrab/ahrab_3.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{stdin, stdout, BufRead, BufReader, BufWriter, Write},
[INFO] [stdout]   |          ^^^^^  ^^^^^^  ^^^^^^^  ^^^^^^^^^  ^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/conding_test/backjun/back1253.rs:28:28
[INFO] [stdout]    |
[INFO] [stdout] 28 |                         if (i != k && j != k) {
[INFO] [stdout]    |                            ^                ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 28 -                         if (i != k && j != k) {
[INFO] [stdout] 28 +                         if i != k && j != k {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/conding_test/books/a10.rs:1:61
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{stdin, stdout, BufRead, BufReader, BufWriter, Write};
[INFO] [stdout]   |                                                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cmp`
[INFO] [stdout]  --> src/conding_test/books/a16.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     cmp,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/conding_test/books/a17.rs:1:61
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{stdin, stdout, BufRead, BufReader, BufWriter, Write};
[INFO] [stdout]   |                                                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/algorithms/backtracking/knights_tour/warnsdorffs_path.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/algorithms/greedy/jump_game/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use super::*;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `BufReader`, `BufWriter`, `Write`, `stdin`, and `stdout`
[INFO] [stdout]  --> src/conding_test/ahrab/ahrab_3.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{stdin, stdout, BufRead, BufReader, BufWriter, Write},
[INFO] [stdout]   |          ^^^^^  ^^^^^^  ^^^^^^^  ^^^^^^^^^  ^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/conding_test/backjun/back1253.rs:28:28
[INFO] [stdout]    |
[INFO] [stdout] 28 |                         if (i != k && j != k) {
[INFO] [stdout]    |                            ^                ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 28 -                         if (i != k && j != k) {
[INFO] [stdout] 28 +                         if i != k && j != k {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/conding_test/books/a10.rs:1:61
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{stdin, stdout, BufRead, BufReader, BufWriter, Write};
[INFO] [stdout]   |                                                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cmp`
[INFO] [stdout]  --> src/conding_test/books/a16.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     cmp,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/conding_test/books/a17.rs:1:61
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{stdin, stdout, BufRead, BufReader, BufWriter, Write};
[INFO] [stdout]   |                                                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first_vertex`
[INFO] [stdout]   --> src/algorithms/graph/eulerian/path.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         if let Some(&first_vertex) = self.vertices.first() {
[INFO] [stdout]    |                      ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_first_vertex`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ratio`
[INFO] [stdout]   --> src/algorithms/greedy/knapsack/mod.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |     for (i, ratio) in items {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_ratio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `remaining_capacity` is never read
[INFO] [stdout]   --> src/algorithms/greedy/knapsack/mod.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |             remaining_capacity = 0.0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/algorithms/search/linear_search/mod.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut i = 0;
[INFO] [stdout]   |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/algorithms/search/linear_search/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut i = 0;
[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: unused variable: `first_vertex`
[INFO] [stdout]   --> src/algorithms/graph/eulerian/path.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         if let Some(&first_vertex) = self.vertices.first() {
[INFO] [stdout]    |                      ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_first_vertex`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/algorithms/sort/bucket/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     for i in 1..=n {}
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ratio`
[INFO] [stdout]   --> src/algorithms/greedy/knapsack/mod.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |     for (i, ratio) in items {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_ratio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `remaining_capacity` is never read
[INFO] [stdout]   --> src/algorithms/greedy/knapsack/mod.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |             remaining_capacity = 0.0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/algorithms/sort/bucket/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     for i in 0..=n - 1 {}
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr`
[INFO] [stdout]  --> src/algorithms/sort/bucket/mod.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn sort(arr: &mut Vec<usize>, n: usize) {
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_arr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/algorithms/sort/bucket/mod.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let n = arr.len() - 1;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/algorithms/sort/bucket/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let k = *arr.iter().max().unwrap();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/algorithms/sort/bucket/mod.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut arr: Vec<usize> = vec![16, 14, 10, 8, 7, 9, 3, 2, 4, 1];
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/algorithms/search/linear_search/mod.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut i = 0;
[INFO] [stdout]   |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/algorithms/search/linear_search/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut i = 0;
[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: unused variable: `i`
[INFO] [stdout]  --> src/algorithms/sort/bucket/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     for i in 1..=n {}
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/algorithms/sort/bucket/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     for i in 0..=n - 1 {}
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr`
[INFO] [stdout]  --> src/algorithms/sort/bucket/mod.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn sort(arr: &mut Vec<usize>, n: usize) {
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_arr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/algorithms/sort/bucket/mod.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let n = arr.len() - 1;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/algorithms/sort/bucket/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let k = *arr.iter().max().unwrap();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/algorithms/sort/bucket/mod.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut arr: Vec<usize> = vec![16, 14, 10, 8, 7, 9, 3, 2, 4, 1];
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/backjun/back1253.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/conding_test/backjun/back1253.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 let mut find = v[k];
[INFO] [stdout]    |                     ----^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/a01.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/a02.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/backjun/back1253.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/conding_test/backjun/back1253.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 let mut find = v[k];
[INFO] [stdout]    |                     ----^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/a01.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/a03.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/a02.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/a04.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/a05.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/a03.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/a04.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/a06.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/a05.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/a07.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/a06.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/a07.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `writer`
[INFO] [stdout]   --> src/conding_test/books/a10.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut writer = BufWriter::new(stdout().lock());
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/conding_test/books/a10.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let n = input.parse::<usize>().unwrap();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/conding_test/books/a10.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let a = input
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/conding_test/books/a10.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     for i in 0..d {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]   --> src/conding_test/books/a10.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let l = iter.next().unwrap().parse::<usize>().unwrap();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/conding_test/books/a10.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let r = iter.next().unwrap().parse::<usize>().unwrap();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/conding_test/books/a10.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut writer = BufWriter::new(stdout().lock());
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/conding_test/books/a11.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut a = [0; 100009];
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/conding_test/books/a11.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/conding_test/books/a11.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut a = [0; 100009];
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `writer`
[INFO] [stdout]   --> src/conding_test/books/a17.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut writer = BufWriter::new(stdout().lock());
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/conding_test/books/a17.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let n = input.parse::<usize>().unwrap();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/conding_test/books/a17.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let a = input
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/conding_test/books/a17.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let b = input
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `writer`
[INFO] [stdout]   --> src/conding_test/books/a10.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut writer = BufWriter::new(stdout().lock());
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/conding_test/books/a10.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let n = input.parse::<usize>().unwrap();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/conding_test/books/a10.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let a = input
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/conding_test/books/a10.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     for i in 0..d {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]   --> src/conding_test/books/a10.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let l = iter.next().unwrap().parse::<usize>().unwrap();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/conding_test/books/a10.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let r = iter.next().unwrap().parse::<usize>().unwrap();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/conding_test/books/a17.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut writer = BufWriter::new(stdout().lock());
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/conding_test/books/a10.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut writer = BufWriter::new(stdout().lock());
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/b02.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/conding_test/books/a11.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut a = [0; 100009];
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/conding_test/books/a11.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/b03.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/conding_test/books/a11.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut a = [0; 100009];
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `total` is never read
[INFO] [stdout]  --> src/conding_test/coders_cup/higher_or_lower/mod.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut total = 0;
[INFO] [stdout]   |             ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/coders_cup/palindrome_checking/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut c = input.chars().collect::<Vec<char>>();
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/coders_cup/palindrome_checking/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut rev = c.iter().rev().map(|x| *x).collect::<Vec<char>>();
[INFO] [stdout]   |         ----^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `writer`
[INFO] [stdout]   --> src/conding_test/books/a17.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut writer = BufWriter::new(stdout().lock());
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/conding_test/books/a17.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let n = input.parse::<usize>().unwrap();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/conding_test/books/a17.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let a = input
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/conding_test/books/a17.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let b = input
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/conding_test/books/a17.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut writer = BufWriter::new(stdout().lock());
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/b02.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/books/b03.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut reader = BufReader::new(stdin().lock());
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `total` is never read
[INFO] [stdout]  --> src/conding_test/coders_cup/higher_or_lower/mod.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut total = 0;
[INFO] [stdout]   |             ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/coders_cup/palindrome_checking/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut c = input.chars().collect::<Vec<char>>();
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/conding_test/coders_cup/palindrome_checking/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut rev = c.iter().rev().map(|x| *x).collect::<Vec<char>>();
[INFO] [stdout]   |         ----^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `capacity`
[INFO] [stdout]   --> src/data_structure/array/mod.rs:10:26
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn with_capacity(capacity: usize) {}
[INFO] [stdout]    |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_capacity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/data_structure/array/mod.rs:22:22
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn at(&self, index: usize) {}
[INFO] [stdout]    |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/data_structure/array/mod.rs:43:30
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn insert(&mut self, index: usize) {}
[INFO] [stdout]    |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/data_structure/array/mod.rs:46:29
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn erase(&mut self, index: usize) {}
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/data_structure/array/mod.rs:58:36
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn value_n_from_end(&self, n: usize) {}
[INFO] [stdout]    |                                    ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/data_structure/graph/breadth_first_search.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     for i in 0..10{
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `capacity`
[INFO] [stdout]   --> src/data_structure/array/mod.rs:10:26
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn with_capacity(capacity: usize) {}
[INFO] [stdout]    |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_capacity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/data_structure/array/mod.rs:22:22
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn at(&self, index: usize) {}
[INFO] [stdout]    |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/data_structure/array/mod.rs:43:30
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn insert(&mut self, index: usize) {}
[INFO] [stdout]    |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/data_structure/array/mod.rs:46:29
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn erase(&mut self, index: usize) {}
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/data_structure/array/mod.rs:58:36
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn value_n_from_end(&self, n: usize) {}
[INFO] [stdout]    |                                    ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/data_structure/graph/breadth_first_search.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     for i in 0..10{
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/data_structure/queue/mod.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut new_node = Node::new(x);
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/data_structure/queue/mod.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut new_node = Node::new(x);
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/data_structure/queue/mod.rs:59:31
[INFO] [stdout]    |
[INFO] [stdout] 59 |         self.head.take().map(|mut head| {
[INFO] [stdout]    |                               ----^^^^
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/data_structure/queue/mod.rs:59:31
[INFO] [stdout]    |
[INFO] [stdout] 59 |         self.head.take().map(|mut head| {
[INFO] [stdout]    |                               ----^^^^
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/algorithms/backtracking/knights_tour/warnsdorffs_path.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/algorithms/backtracking/knights_tour/warnsdorffs_path.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_graph` is never used
[INFO] [stdout]   --> src/algorithms/backtracking/knights_tour/warnsdorffs_path.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn make_graph(n: usize, m: usize) -> Vec<Vec<usize>> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_unvisited_neighbors` is never used
[INFO] [stdout]   --> src/algorithms/backtracking/knights_tour/warnsdorffs_path.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn count_unvisited_neighbors(pos: usize, graph: &Vec<Vec<usize>>, visited: &Vec<bool>) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `warnsdorff_path` is never used
[INFO] [stdout]   --> src/algorithms/backtracking/knights_tour/warnsdorffs_path.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn warnsdorff_path(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `matrix_multiply` is never used
[INFO] [stdout]  --> src/algorithms/divide_and_conquer/matrix_multiply.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn matrix_multiply(
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pad_matrix` is never used
[INFO] [stdout]   --> src/algorithms/divide_and_conquer/matrix_multiply.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn pad_matrix(matrix: &Vec<Vec<usize>>, new_size: usize) -> Vec<Vec<usize>> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unpad_matrix` is never used
[INFO] [stdout]    --> src/algorithms/divide_and_conquer/matrix_multiply.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn unpad_matrix(matrix: Vec<Vec<usize>>, original_size: usize) -> Vec<Vec<usize>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fibonacci2` is never used
[INFO] [stdout]   --> src/algorithms/dynamic_programming/fibonacci.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn fibonacci2(n: u64, memo: &mut HashMap<u64, u64>) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fibonacci3` is never used
[INFO] [stdout]   --> src/algorithms/dynamic_programming/fibonacci.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn fibonacci3(n: u64) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_eulerian_path` is never used
[INFO] [stdout]  --> src/algorithms/graph/eulerian/cycle.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn find_eulerian_path(){}
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search` is never used
[INFO] [stdout]  --> src/algorithms/search/linear_search/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn search() {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]  --> src/algorithms/search/linear_search/mod.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn example() {}
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort` is never used
[INFO] [stdout]  --> src/algorithms/sort/bucket/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn sort(arr: &mut Vec<usize>, n: usize) {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parent` is never used
[INFO] [stdout]   --> src/algorithms/sort/heap/mod.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn parent(i: usize) -> usize {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `quick_sort` is never used
[INFO] [stdout]  --> src/algorithms/sort/quick/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn quick_sort(a: &mut [i32], n: usize) {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/conding_test/ahrab/ahrab_1.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn solution(movie: Vec<String>) -> Vec<String> {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/conding_test/ahrab/ahrab_1.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/conding_test/ahrab/ahrab_2.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn solution(p: String, n: i32) -> String {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/conding_test/ahrab/ahrab_2.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `distance` is never used
[INFO] [stdout]  --> src/conding_test/ahrab/ahrab_3.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |  fn distance(x: f64, y: f64) -> f64 {
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vector_size` is never used
[INFO] [stdout]   --> src/conding_test/ahrab/ahrab_3.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |  fn vector_size(x: f64, y: f64) -> f64 {
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `inner_fn` is never used
[INFO] [stdout]   --> src/conding_test/ahrab/ahrab_3.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |  fn inner_fn(x: f64, y: f64, x1: f64, y1: f64) -> f64 {
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/conding_test/ahrab/ahrab_3.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |  fn main() {
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/conding_test/ahrab/ahrab_5.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn solution(foods: &Vec<i32>) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/conding_test/ahrab/ahrab_5.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/conding_test/backjun/back1253.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/conding_test/books/a04.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/conding_test/books/a05.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/conding_test/books/a06.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/conding_test/books/a07.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/conding_test/books/a08.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search` is never used
[INFO] [stdout]  --> src/conding_test/books/a11.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn search(x: i32, n: i32, a: Vec<i32>) -> i32 {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/conding_test/books/a11.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/conding_test/coders_cup/maxinum_score_from_removing_stones/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bfs` is never used
[INFO] [stdout]  --> src/data_structure/graph/breadth_first_search.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn bfs(){
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dfs` is never used
[INFO] [stdout]  --> src/data_structure/graph/depth_first_tree.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn dfs(){
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dfs_visit` is never used
[INFO] [stdout]   --> src/data_structure/graph/depth_first_tree.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn dfs_visit(){}
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `size` is never used
[INFO] [stdout]   --> src/data_structure/queue/mod.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<T> Queue<T> {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn size(&self) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]  --> src/data_structure/red_black_tree.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn example(){}
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `top` is never used
[INFO] [stdout]   --> src/data_structure/stack/mod.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<T> Stack<T> {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn top() {}
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ptr`, `capacity`, and `size` are never read
[INFO] [stdout]  --> src/data_structure/vector/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Vector<T> {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 2 |     ptr: *mut T,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 3 |     capacity: usize,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     size: usize,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_graph` is never used
[INFO] [stdout]   --> src/algorithms/backtracking/knights_tour/warnsdorffs_path.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn make_graph(n: usize, m: usize) -> Vec<Vec<usize>> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_unvisited_neighbors` is never used
[INFO] [stdout]   --> src/algorithms/backtracking/knights_tour/warnsdorffs_path.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn count_unvisited_neighbors(pos: usize, graph: &Vec<Vec<usize>>, visited: &Vec<bool>) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `warnsdorff_path` is never used
[INFO] [stdout]   --> src/algorithms/backtracking/knights_tour/warnsdorffs_path.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn warnsdorff_path(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `matrix_multiply` is never used
[INFO] [stdout]  --> src/algorithms/divide_and_conquer/matrix_multiply.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn matrix_multiply(
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pad_matrix` is never used
[INFO] [stdout]   --> src/algorithms/divide_and_conquer/matrix_multiply.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn pad_matrix(matrix: &Vec<Vec<usize>>, new_size: usize) -> Vec<Vec<usize>> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unpad_matrix` is never used
[INFO] [stdout]    --> src/algorithms/divide_and_conquer/matrix_multiply.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn unpad_matrix(matrix: Vec<Vec<usize>>, original_size: usize) -> Vec<Vec<usize>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fibonacci2` is never used
[INFO] [stdout]   --> src/algorithms/dynamic_programming/fibonacci.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn fibonacci2(n: u64, memo: &mut HashMap<u64, u64>) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fibonacci3` is never used
[INFO] [stdout]   --> src/algorithms/dynamic_programming/fibonacci.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn fibonacci3(n: u64) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_eulerian_path` is never used
[INFO] [stdout]  --> src/algorithms/graph/eulerian/cycle.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn find_eulerian_path(){}
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search` is never used
[INFO] [stdout]  --> src/algorithms/search/linear_search/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn search() {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]  --> src/algorithms/search/linear_search/mod.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn example() {}
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort` is never used
[INFO] [stdout]  --> src/algorithms/sort/bucket/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn sort(arr: &mut Vec<usize>, n: usize) {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parent` is never used
[INFO] [stdout]   --> src/algorithms/sort/heap/mod.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn parent(i: usize) -> usize {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `quick_sort` is never used
[INFO] [stdout]  --> src/algorithms/sort/quick/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn quick_sort(a: &mut [i32], n: usize) {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/conding_test/ahrab/ahrab_1.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn solution(movie: Vec<String>) -> Vec<String> {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/conding_test/ahrab/ahrab_1.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/conding_test/ahrab/ahrab_2.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn solution(p: String, n: i32) -> String {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/conding_test/ahrab/ahrab_2.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `distance` is never used
[INFO] [stdout]  --> src/conding_test/ahrab/ahrab_3.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |  fn distance(x: f64, y: f64) -> f64 {
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vector_size` is never used
[INFO] [stdout]   --> src/conding_test/ahrab/ahrab_3.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |  fn vector_size(x: f64, y: f64) -> f64 {
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `inner_fn` is never used
[INFO] [stdout]   --> src/conding_test/ahrab/ahrab_3.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |  fn inner_fn(x: f64, y: f64, x1: f64, y1: f64) -> f64 {
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/conding_test/ahrab/ahrab_3.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |  fn main() {
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/conding_test/ahrab/ahrab_5.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn solution(foods: &Vec<i32>) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/conding_test/ahrab/ahrab_5.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/conding_test/backjun/back1253.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/conding_test/books/a04.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/conding_test/books/a05.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/conding_test/books/a06.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/conding_test/books/a07.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/conding_test/books/a08.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search` is never used
[INFO] [stdout]  --> src/conding_test/books/a11.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn search(x: i32, n: i32, a: Vec<i32>) -> i32 {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/conding_test/books/a11.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/conding_test/coders_cup/maxinum_score_from_removing_stones/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bfs` is never used
[INFO] [stdout]  --> src/data_structure/graph/breadth_first_search.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn bfs(){
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dfs` is never used
[INFO] [stdout]  --> src/data_structure/graph/depth_first_tree.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn dfs(){
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dfs_visit` is never used
[INFO] [stdout]   --> src/data_structure/graph/depth_first_tree.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn dfs_visit(){}
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `size` is never used
[INFO] [stdout]   --> src/data_structure/queue/mod.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<T> Queue<T> {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn size(&self) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]  --> src/data_structure/red_black_tree.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn example(){}
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `top` is never used
[INFO] [stdout]   --> src/data_structure/stack/mod.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<T> Stack<T> {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn top() {}
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ptr`, `capacity`, and `size` are never read
[INFO] [stdout]  --> src/data_structure/vector/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Vector<T> {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 2 |     ptr: *mut T,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 3 |     capacity: usize,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     size: usize,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `algorithms` and `data_structure`
[INFO] [stdout]  --> src/main.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use algorithm::{algorithms, conding_test, data_structure};
[INFO] [stdout]   |                 ^^^^^^^^^^                ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `algorithms` and `data_structure`
[INFO] [stdout]  --> src/main.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use algorithm::{algorithms, conding_test, data_structure};
[INFO] [stdout]   |                 ^^^^^^^^^^                ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.73s
[INFO] running `Command { std: "docker" "inspect" "6f7a99125bf03647bf011facc3489080472a772d7881df7b02ba8038012bf754", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f7a99125bf03647bf011facc3489080472a772d7881df7b02ba8038012bf754", kill_on_drop: false }`
[INFO] [stdout] 6f7a99125bf03647bf011facc3489080472a772d7881df7b02ba8038012bf754