[INFO] cloning repository https://github.com/dann20/leetcode-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dann20/leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdann20%2Fleetcode-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdann20%2Fleetcode-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f13a9b165bb7f47a47f43ed9a1badb77761d392d
[INFO] testing dann20/leetcode-rust against 1.90.0 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdann20%2Fleetcode-rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/dann20/leetcode-rust
[INFO] finished tweaking git repo https://github.com/dann20/leetcode-rust
[INFO] tweaked toml for git repo https://github.com/dann20/leetcode-rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dann20/leetcode-rust on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dann20/leetcode-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `to_list`
[INFO] [stdout]   --> src/solution/s0234_palindrome_linked_list.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stdout]    |                                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_list`
[INFO] [stdout]   --> src/solution/s0876_middle_of_the_linked_list.rs:27:42
[INFO] [stdout]    |
[INFO] [stdout] 27 | use crate::util::linked_list::{ListNode, to_list};
[INFO] [stdout]    |                                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/solution/s0409_longest_palindrome.rs:57:26
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 count += (*value - 1);
[INFO] [stdout]    |                          ^          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 57 -                 count += (*value - 1);
[INFO] [stdout] 57 +                 count += *value - 1;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter`
[INFO] [stdout]  --> src/solution/s0415_add_strings.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::iter;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_list`
[INFO] [stdout]   --> src/solution/s0002_add_two_numbers.rs:32:32
[INFO] [stdout]    |
[INFO] [stdout] 32 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stdout]    |                                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]   --> src/solution/s0004_median_of_two_sorted_arrays.rs:78:28
[INFO] [stdout]    |
[INFO] [stdout] 78 |                     return (((max(left_a, left_b) + min(right_a, right_b)) as f64) / 2.0);
[INFO] [stdout]    |                            ^                                                            ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 78 -                     return (((max(left_a, left_b) + min(right_a, right_b)) as f64) / 2.0);
[INFO] [stdout] 78 +                     return ((max(left_a, left_b) + min(right_a, right_b)) as f64) / 2.0;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_list`
[INFO] [stdout]  --> src/solution/s0082_remove_duplicates_from_sorted_list_ii.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stdout]   |                                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `surf::middleware::logger::new`
[INFO] [stdout]  --> src/solution/s0707_design_linked_list.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use surf::middleware::logger::new;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stdout]   --> src/solution/s0024_swap_nodes_in_pairs.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use std::borrow::BorrowMut;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_list`
[INFO] [stdout]   --> src/solution/s0024_swap_nodes_in_pairs.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stdout]    |                                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | use std::ops::Deref;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_list`
[INFO] [stdout]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:32:32
[INFO] [stdout]    |
[INFO] [stdout] 32 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stdout]    |                                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/solution/s0004_median_of_two_sorted_arrays.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 58 | /         loop {
[INFO] [stdout] 59 | |             let m_a: i32 = ((l + r) as f64 / 2.0).floor() as i32;
[INFO] [stdout] 60 | |             let m_b: i32 = half - m_a - 2;
[INFO] [stdout] ...  |
[INFO] [stdout] 87 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 88 |           unreachable!();
[INFO] [stdout]    |           ^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/solution/s1337_the_k_weakest_rows_in_a_matrix.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let [m, n] = [mat.len(), mat[0].len()];
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `inc` is never read
[INFO] [stdout]   --> src/solution/s0056_merge_intervals.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let mut inc = true;
[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: value assigned to `size` is never read
[INFO] [stdout]   --> src/solution/s0763_partition_labels.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let mut size = 1;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]   --> src/solution/s0763_partition_labels.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let mut end = *map.get(&vec[ptr]).unwrap();
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ch`
[INFO] [stdout]   --> src/solution/s0005_longest_palindromic_substring.rs:54:19
[INFO] [stdout]    |
[INFO] [stdout] 54 |         for (idx, ch) in s.char_indices() {
[INFO] [stdout]    |                   ^^ help: if this is intentional, prefix it with an underscore: `_ch`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/solution/s0707_design_linked_list.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let mut next_next_node = if next_node.as_ref().is_some() {
[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/problem/p0006_zigzag_conversion.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         for i in 0..num_rows {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `num_rows` is assigned to, but never used
[INFO] [stdout]   --> src/problem/p0006_zigzag_conversion.rs:66:17
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let mut num_rows = 0;
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_num_rows` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/problem/p0006_zigzag_conversion.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut full = true;
[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/problem/p0025_reverse_nodes_in_k_group.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut head = &mut res;
[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/problem/p0025_reverse_nodes_in_k_group.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let mut prev: Option<Box<ListNode>> = None;
[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/problem/p0025_reverse_nodes_in_k_group.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let mut prev_group: Option<Box<ListNode>> = None;
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next_node`
[INFO] [stdout]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:88:25
[INFO] [stdout]    |
[INFO] [stdout] 88 |                 let mut next_node: Option<Box<ListNode>>;
[INFO] [stdout]    |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:83:17
[INFO] [stdout]    |
[INFO] [stdout] 83 |             let mut prev_group = prev_group;
[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/problem/p0025_reverse_nodes_in_k_group.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 let mut head = 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/problem/p0025_reverse_nodes_in_k_group.rs:87:21
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 let mut prev_group_new = head.clone();
[INFO] [stdout]    |                     ----^^^^^^^^^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0013_roman_to_integer.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `roman_to_int` is never used
[INFO] [stdout]   --> src/solution/s0013_roman_to_integer.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 57 |     pub fn roman_to_int(s: String) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0234_palindrome_linked_list.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `is_palindrome` is never used
[INFO] [stdout]   --> src/solution/s0234_palindrome_linked_list.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 50 |     pub fn is_palindrome(head: Option<Box<ListNode>>) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0383_ransom_note.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `can_construct` is never used
[INFO] [stdout]   --> src/solution/s0383_ransom_note.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 31 |     pub fn can_construct(ransom_note: String, magazine: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0412_fizz_buzz.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `fizz_buzz` is never used
[INFO] [stdout]   --> src/solution/s0412_fizz_buzz.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 35 |     pub fn fizz_buzz(n: i32) -> Vec<String> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0876_middle_of_the_linked_list.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `middle_node` is never used
[INFO] [stdout]   --> src/solution/s0876_middle_of_the_linked_list.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 50 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 51 |     pub fn middle_node(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s1337_the_k_weakest_rows_in_a_matrix.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `k_weakest_rows` is never used
[INFO] [stdout]   --> src/solution/s1337_the_k_weakest_rows_in_a_matrix.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 66 |     pub fn k_weakest_rows(mat: Vec<Vec<i32>>, k: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s1672_richest_customer_wealth.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `maximum_wealth` is never used
[INFO] [stdout]   --> src/solution/s1672_richest_customer_wealth.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 47 |     pub fn maximum_wealth(accounts: Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s1342_number_of_steps_to_reduce_a_number_to_zero.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `number_of_steps` is never used
[INFO] [stdout]   --> src/solution/s1342_number_of_steps_to_reduce_a_number_to_zero.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 48 |     pub fn number_of_steps(num: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0136_single_number.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `single_number` is never used
[INFO] [stdout]   --> src/solution/s0136_single_number.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 32 |     pub fn single_number(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0169_majority_element.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `majority_element`, `majority_element_follow_up`, and `majority_element_solution` are never used
[INFO] [stdout]   --> src/solution/s0169_majority_element.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 31 |     pub fn majority_element(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn majority_element_follow_up(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn majority_element_solution(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0001_two_sum.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `two_sum` is never used
[INFO] [stdout]   --> src/solution/s0001_two_sum.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 43 |     pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0015_3sum.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `three_sum` is never used
[INFO] [stdout]   --> src/solution/s0015_3sum.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 31 |     pub fn three_sum(nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0167_two_sum_ii_input_array_is_sorted.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `two_sum` is never used
[INFO] [stdout]   --> src/solution/s0167_two_sum_ii_input_array_is_sorted.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 45 |     pub fn two_sum(numbers: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0056_merge_intervals.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `merge` and `my_merge` are never used
[INFO] [stdout]   --> src/solution/s0056_merge_intervals.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 34 |     pub fn merge(intervals: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn my_merge(intervals: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0075_sort_colors.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `sort_colors` is never used
[INFO] [stdout]   --> src/solution/s0075_sort_colors.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 37 |     pub fn sort_colors(nums: &mut Vec<i32>) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0706_design_hashmap.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyHashMap` is never constructed
[INFO] [stdout]   --> src/solution/s0706_design_hashmap.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | struct MyHashMap {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `put`, `get`, and `remove` are never used
[INFO] [stdout]   --> src/solution/s0706_design_hashmap.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl MyHashMap {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 56 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn put(&mut self, key: i32, value: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn get(&self, key: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     fn remove(&mut self, key: i32) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0048_rotate_image.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `rotate` is never used
[INFO] [stdout]   --> src/solution/s0048_rotate_image.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 33 |     pub fn rotate(matrix: &mut Vec<Vec<i32>>) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0119_pascals_triangle_ii.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get_row` is never used
[INFO] [stdout]   --> src/solution/s0119_pascals_triangle_ii.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 34 |     pub fn get_row(row_index: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0059_spiral_matrix_ii.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `generate_matrix` is never used
[INFO] [stdout]   --> src/solution/s0059_spiral_matrix_ii.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 30 |     pub fn generate_matrix(n: i32) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0240_search_a_2d_matrix_ii.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `search_matrix` is never used
[INFO] [stdout]   --> src/solution/s0240_search_a_2d_matrix_ii.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 40 |     pub fn search_matrix(matrix: Vec<Vec<i32>>, target: i32) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0435_non_overlapping_intervals.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `erase_overlap_intervals` is never used
[INFO] [stdout]   --> src/solution/s0435_non_overlapping_intervals.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 40 |     pub fn erase_overlap_intervals(intervals: Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0304_range_sum_query_2d_immutable.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NumMatrix` is never constructed
[INFO] [stdout]   --> src/solution/s0304_range_sum_query_2d_immutable.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | struct NumMatrix {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `sum_region` are never used
[INFO] [stdout]   --> src/solution/s0304_range_sum_query_2d_immutable.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl NumMatrix {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 56 |     fn new(matrix: Vec<Vec<i32>>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn sum_region(&self, row1: i32, col1: i32, row2: i32, col2: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0238_product_of_array_except_self.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `product_except_self` is never used
[INFO] [stdout]   --> src/solution/s0238_product_of_array_except_self.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 33 |     pub fn product_except_self(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0334_increasing_triplet_subsequence.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `increasing_triplet` is never used
[INFO] [stdout]   --> src/solution/s0334_increasing_triplet_subsequence.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 41 |     pub fn increasing_triplet(nums: Vec<i32>) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0560_subarray_sum_equals_k.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `subarray_sum` is never used
[INFO] [stdout]   --> src/solution/s0560_subarray_sum_equals_k.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn subarray_sum(nums: Vec<i32>, k: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0409_longest_palindrome.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `longest_palindrome` is never used
[INFO] [stdout]   --> src/solution/s0409_longest_palindrome.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 39 |     pub fn longest_palindrome(s: String) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0415_add_strings.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `add_strings` is never used
[INFO] [stdout]   --> src/solution/s0415_add_strings.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 40 |     pub fn add_strings(num1: String, num2: String) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0051_n_queens.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `solve_n_queens` is never used
[INFO] [stdout]   --> src/solution/s0051_n_queens.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 33 |     pub fn solve_n_queens(n: i32) -> Vec<Vec<String>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0052_n_queens_ii.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `total_n_queens` is never used
[INFO] [stdout]   --> src/solution/s0052_n_queens_ii.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 32 |     pub fn total_n_queens(n: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s1480_running_sum_of_1d_array.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `running_sum` is never used
[INFO] [stdout]   --> src/solution/s1480_running_sum_of_1d_array.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 46 |     pub fn running_sum(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0867_transpose_matrix.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `transpose` is never used
[INFO] [stdout]   --> src/solution/s0867_transpose_matrix.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 36 |     pub fn transpose(matrix: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0290_word_pattern.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `word_pattern` is never used
[INFO] [stdout]   --> src/solution/s0290_word_pattern.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 41 |     pub fn word_pattern(pattern: String, s: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0763_partition_labels.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `partition_labels` is never used
[INFO] [stdout]   --> src/solution/s0763_partition_labels.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 37 |     pub fn partition_labels(s: String) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0043_multiply_strings.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `multiply` is never used
[INFO] [stdout]   --> src/solution/s0043_multiply_strings.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn multiply(num1: String, num2: String) -> String {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0049_group_anagrams.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `group_anagrams` is never used
[INFO] [stdout]   --> src/solution/s0049_group_anagrams.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 32 |     pub fn group_anagrams(strs: Vec<String>) -> Vec<Vec<String>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s1332_remove_palindromic_subsequences.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `remove_palindrome_sub` is never used
[INFO] [stdout]   --> src/solution/s1332_remove_palindromic_subsequences.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 44 |     pub fn remove_palindrome_sub(s: String) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0005_longest_palindromic_substring.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `longest_palindrome` is never used
[INFO] [stdout]   --> src/solution/s0005_longest_palindromic_substring.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 32 |     pub fn longest_palindrome(s: String) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0187_repeated_dna_sequences.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `find_repeated_dna_sequences` is never used
[INFO] [stdout]   --> src/solution/s0187_repeated_dna_sequences.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 32 |     pub fn find_repeated_dna_sequences(s: String) -> Vec<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0002_add_two_numbers.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `add_two_numbers` is never used
[INFO] [stdout]   --> src/solution/s0002_add_two_numbers.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 56 |     pub fn add_two_numbers(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0003_longest_substring_without_repeating_characters.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `length_of_longest_substring` is never used
[INFO] [stdout]   --> src/solution/s0003_longest_substring_without_repeating_characters.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 40 |     pub fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0004_median_of_two_sorted_arrays.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `find_median_sorted_arrays` is never used
[INFO] [stdout]   --> src/solution/s0004_median_of_two_sorted_arrays.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 38 |     pub fn find_median_sorted_arrays(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0082_remove_duplicates_from_sorted_list_ii.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `delete_duplicates` is never used
[INFO] [stdout]   --> src/solution/s0082_remove_duplicates_from_sorted_list_ii.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 34 |     pub fn delete_duplicates(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0707_design_linked_list.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyLinkedList` is never constructed
[INFO] [stdout]   --> src/solution/s0707_design_linked_list.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct MyLinkedList {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/solution/s0707_design_linked_list.rs:54:6
[INFO] [stdout]    |
[INFO] [stdout] 54 | type Link = Option<Box<Node>>;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/solution/s0707_design_linked_list.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get`, `add_at_head`, `add_at_tail`, `add_at_index`, and `delete_at_index` are never used
[INFO] [stdout]    --> src/solution/s0707_design_linked_list.rs:67:8
[INFO] [stdout]     |
[INFO] [stdout]  66 | impl MyLinkedList {
[INFO] [stdout]     | ----------------- associated items in this implementation
[INFO] [stdout]  67 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  71 |     fn get(&self, index: i32) -> i32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  91 |     fn add_at_head(&mut self, val: i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  99 |     fn add_at_tail(&mut self, val: i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 |     fn add_at_index(&mut self, index: i32, val: i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 138 |     fn delete_at_index(&mut self, index: i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0024_swap_nodes_in_pairs.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `swap_pairs` is never used
[INFO] [stdout]   --> src/solution/s0024_swap_nodes_in_pairs.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 54 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 55 |     pub fn swap_pairs(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/problem/p0006_zigzag_conversion.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `convert` is never used
[INFO] [stdout]   --> src/problem/p0006_zigzag_conversion.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 52 |     pub fn convert(s: String, num_rows: i32) -> String {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `reverse_k_group` is never used
[INFO] [stdout]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 56 |     pub fn reverse_k_group(head: Option<Box<ListNode>>, k: i32) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::env;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]    --> src/main.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |     use std::fs;
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::stream::StreamExt`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use futures::stream::StreamExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `is_random` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let mut is_random = false;
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_is_random` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `is_solving` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mut is_solving = false;
[INFO] [stdout]    |                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_is_solving` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `id` is never read
[INFO] [stdout]   --> src/main.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut id: u32 = 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: value assigned to `is_random` is never read
[INFO] [stdout]   --> src/main.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             is_random = true;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_solving` is never read
[INFO] [stdout]   --> src/main.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |             is_solving = true;
[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/main.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |             let mut mod_file_addon = Arc::new(Mutex::new(vec![]));
[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 `Result` that must be used
[INFO] [stdout]    --> src/main.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |             writeln!(lib_file, "{}", mod_file_addon.lock().unwrap().join("\n"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 116 |             let _ = writeln!(lib_file, "{}", mod_file_addon.lock().unwrap().join("\n"));
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:311:5
[INFO] [stdout]     |
[INFO] [stdout] 311 |     fs::write(mod_file, lines.join("\n"));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 311 |     let _ = fs::write(mod_file, lines.join("\n"));
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:317:5
[INFO] [stdout]     |
[INFO] [stdout] 317 |     writeln!(lib_file, "mod {};", solution_name);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 317 |     let _ = writeln!(lib_file, "mod {};", solution_name);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:360:9
[INFO] [stdout]     |
[INFO] [stdout] 360 |         writeln!(lib_file, "mod {};", file_name);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 360 |         let _ = writeln!(lib_file, "mod {};", file_name);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 36.15s
[INFO] running `Command { std: "docker" "inspect" "9801255547f9544e62c488b1a51fc5bea5f834b2ba62417bd4cdec1783976a2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9801255547f9544e62c488b1a51fc5bea5f834b2ba62417bd4cdec1783976a2f", kill_on_drop: false }`
[INFO] [stdout] 9801255547f9544e62c488b1a51fc5bea5f834b2ba62417bd4cdec1783976a2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e611a4f101bc2f29a792034bcd446f397a844657374cc46f3b02f7b2f4435626
[INFO] running `Command { std: "docker" "start" "-a" "e611a4f101bc2f29a792034bcd446f397a844657374cc46f3b02f7b2f4435626", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `to_list`
[INFO] [stdout]   --> src/solution/s0234_palindrome_linked_list.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stdout]    |                                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_list`
[INFO] [stdout]   --> src/solution/s0876_middle_of_the_linked_list.rs:27:42
[INFO] [stdout]    |
[INFO] [stdout] 27 | use crate::util::linked_list::{ListNode, to_list};
[INFO] [stdout]    |                                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/solution/s0409_longest_palindrome.rs:57:26
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 count += (*value - 1);
[INFO] [stdout]    |                          ^          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 57 -                 count += (*value - 1);
[INFO] [stdout] 57 +                 count += *value - 1;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter`
[INFO] [stdout]  --> src/solution/s0415_add_strings.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::iter;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_list`
[INFO] [stdout]   --> src/solution/s0002_add_two_numbers.rs:32:32
[INFO] [stdout]    |
[INFO] [stdout] 32 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stdout]    |                                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]   --> src/solution/s0004_median_of_two_sorted_arrays.rs:78:28
[INFO] [stdout]    |
[INFO] [stdout] 78 |                     return (((max(left_a, left_b) + min(right_a, right_b)) as f64) / 2.0);
[INFO] [stdout]    |                            ^                                                            ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 78 -                     return (((max(left_a, left_b) + min(right_a, right_b)) as f64) / 2.0);
[INFO] [stdout] 78 +                     return ((max(left_a, left_b) + min(right_a, right_b)) as f64) / 2.0;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_list`
[INFO] [stdout]  --> src/solution/s0082_remove_duplicates_from_sorted_list_ii.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stdout]   |                                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `surf::middleware::logger::new`
[INFO] [stdout]  --> src/solution/s0707_design_linked_list.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use surf::middleware::logger::new;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stdout]   --> src/solution/s0024_swap_nodes_in_pairs.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use std::borrow::BorrowMut;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_list`
[INFO] [stdout]   --> src/solution/s0024_swap_nodes_in_pairs.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stdout]    |                                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | use std::ops::Deref;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_list`
[INFO] [stdout]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:32:32
[INFO] [stdout]    |
[INFO] [stdout] 32 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stdout]    |                                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/solution/s0004_median_of_two_sorted_arrays.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 58 | /         loop {
[INFO] [stdout] 59 | |             let m_a: i32 = ((l + r) as f64 / 2.0).floor() as i32;
[INFO] [stdout] 60 | |             let m_b: i32 = half - m_a - 2;
[INFO] [stdout] ...  |
[INFO] [stdout] 87 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 88 |           unreachable!();
[INFO] [stdout]    |           ^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/solution/s1337_the_k_weakest_rows_in_a_matrix.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let [m, n] = [mat.len(), mat[0].len()];
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `inc` is never read
[INFO] [stdout]   --> src/solution/s0056_merge_intervals.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let mut inc = true;
[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: value assigned to `size` is never read
[INFO] [stdout]   --> src/solution/s0763_partition_labels.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let mut size = 1;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]   --> src/solution/s0763_partition_labels.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let mut end = *map.get(&vec[ptr]).unwrap();
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ch`
[INFO] [stdout]   --> src/solution/s0005_longest_palindromic_substring.rs:54:19
[INFO] [stdout]    |
[INFO] [stdout] 54 |         for (idx, ch) in s.char_indices() {
[INFO] [stdout]    |                   ^^ help: if this is intentional, prefix it with an underscore: `_ch`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/solution/s0707_design_linked_list.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let mut next_next_node = if next_node.as_ref().is_some() {
[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/problem/p0006_zigzag_conversion.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         for i in 0..num_rows {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `num_rows` is assigned to, but never used
[INFO] [stdout]   --> src/problem/p0006_zigzag_conversion.rs:66:17
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let mut num_rows = 0;
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_num_rows` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/problem/p0006_zigzag_conversion.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut full = true;
[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/problem/p0025_reverse_nodes_in_k_group.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut head = &mut res;
[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/problem/p0025_reverse_nodes_in_k_group.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let mut prev: Option<Box<ListNode>> = None;
[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/problem/p0025_reverse_nodes_in_k_group.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let mut prev_group: Option<Box<ListNode>> = None;
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next_node`
[INFO] [stdout]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:88:25
[INFO] [stdout]    |
[INFO] [stdout] 88 |                 let mut next_node: Option<Box<ListNode>>;
[INFO] [stdout]    |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:83:17
[INFO] [stdout]    |
[INFO] [stdout] 83 |             let mut prev_group = prev_group;
[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/problem/p0025_reverse_nodes_in_k_group.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 let mut head = 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/problem/p0025_reverse_nodes_in_k_group.rs:87:21
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 let mut prev_group_new = head.clone();
[INFO] [stdout]    |                     ----^^^^^^^^^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0013_roman_to_integer.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `roman_to_int` is never used
[INFO] [stdout]   --> src/solution/s0013_roman_to_integer.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 57 |     pub fn roman_to_int(s: String) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0234_palindrome_linked_list.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `is_palindrome` is never used
[INFO] [stdout]   --> src/solution/s0234_palindrome_linked_list.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 50 |     pub fn is_palindrome(head: Option<Box<ListNode>>) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0383_ransom_note.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `can_construct` is never used
[INFO] [stdout]   --> src/solution/s0383_ransom_note.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 31 |     pub fn can_construct(ransom_note: String, magazine: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0412_fizz_buzz.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `fizz_buzz` is never used
[INFO] [stdout]   --> src/solution/s0412_fizz_buzz.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 35 |     pub fn fizz_buzz(n: i32) -> Vec<String> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0876_middle_of_the_linked_list.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `middle_node` is never used
[INFO] [stdout]   --> src/solution/s0876_middle_of_the_linked_list.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 50 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 51 |     pub fn middle_node(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s1337_the_k_weakest_rows_in_a_matrix.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `k_weakest_rows` is never used
[INFO] [stdout]   --> src/solution/s1337_the_k_weakest_rows_in_a_matrix.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 66 |     pub fn k_weakest_rows(mat: Vec<Vec<i32>>, k: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s1672_richest_customer_wealth.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `maximum_wealth` is never used
[INFO] [stdout]   --> src/solution/s1672_richest_customer_wealth.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 47 |     pub fn maximum_wealth(accounts: Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s1342_number_of_steps_to_reduce_a_number_to_zero.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `number_of_steps` is never used
[INFO] [stdout]   --> src/solution/s1342_number_of_steps_to_reduce_a_number_to_zero.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 48 |     pub fn number_of_steps(num: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0136_single_number.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `single_number` is never used
[INFO] [stdout]   --> src/solution/s0136_single_number.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 32 |     pub fn single_number(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0169_majority_element.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `majority_element`, `majority_element_follow_up`, and `majority_element_solution` are never used
[INFO] [stdout]   --> src/solution/s0169_majority_element.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 31 |     pub fn majority_element(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn majority_element_follow_up(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn majority_element_solution(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0001_two_sum.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `two_sum` is never used
[INFO] [stdout]   --> src/solution/s0001_two_sum.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 43 |     pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0015_3sum.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `three_sum` is never used
[INFO] [stdout]   --> src/solution/s0015_3sum.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 31 |     pub fn three_sum(nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0167_two_sum_ii_input_array_is_sorted.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `two_sum` is never used
[INFO] [stdout]   --> src/solution/s0167_two_sum_ii_input_array_is_sorted.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 45 |     pub fn two_sum(numbers: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0056_merge_intervals.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `merge` and `my_merge` are never used
[INFO] [stdout]   --> src/solution/s0056_merge_intervals.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 34 |     pub fn merge(intervals: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn my_merge(intervals: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0075_sort_colors.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `sort_colors` is never used
[INFO] [stdout]   --> src/solution/s0075_sort_colors.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 37 |     pub fn sort_colors(nums: &mut Vec<i32>) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0706_design_hashmap.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyHashMap` is never constructed
[INFO] [stdout]   --> src/solution/s0706_design_hashmap.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | struct MyHashMap {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `put`, `get`, and `remove` are never used
[INFO] [stdout]   --> src/solution/s0706_design_hashmap.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl MyHashMap {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 56 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn put(&mut self, key: i32, value: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn get(&self, key: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     fn remove(&mut self, key: i32) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0048_rotate_image.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `rotate` is never used
[INFO] [stdout]   --> src/solution/s0048_rotate_image.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 33 |     pub fn rotate(matrix: &mut Vec<Vec<i32>>) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0119_pascals_triangle_ii.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get_row` is never used
[INFO] [stdout]   --> src/solution/s0119_pascals_triangle_ii.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 34 |     pub fn get_row(row_index: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0059_spiral_matrix_ii.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `generate_matrix` is never used
[INFO] [stdout]   --> src/solution/s0059_spiral_matrix_ii.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 30 |     pub fn generate_matrix(n: i32) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0240_search_a_2d_matrix_ii.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `search_matrix` is never used
[INFO] [stdout]   --> src/solution/s0240_search_a_2d_matrix_ii.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 40 |     pub fn search_matrix(matrix: Vec<Vec<i32>>, target: i32) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0435_non_overlapping_intervals.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `erase_overlap_intervals` is never used
[INFO] [stdout]   --> src/solution/s0435_non_overlapping_intervals.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 40 |     pub fn erase_overlap_intervals(intervals: Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0304_range_sum_query_2d_immutable.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NumMatrix` is never constructed
[INFO] [stdout]   --> src/solution/s0304_range_sum_query_2d_immutable.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | struct NumMatrix {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `sum_region` are never used
[INFO] [stdout]   --> src/solution/s0304_range_sum_query_2d_immutable.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl NumMatrix {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 56 |     fn new(matrix: Vec<Vec<i32>>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn sum_region(&self, row1: i32, col1: i32, row2: i32, col2: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0238_product_of_array_except_self.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `product_except_self` is never used
[INFO] [stdout]   --> src/solution/s0238_product_of_array_except_self.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 33 |     pub fn product_except_self(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0334_increasing_triplet_subsequence.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `increasing_triplet` is never used
[INFO] [stdout]   --> src/solution/s0334_increasing_triplet_subsequence.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 41 |     pub fn increasing_triplet(nums: Vec<i32>) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0560_subarray_sum_equals_k.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `subarray_sum` is never used
[INFO] [stdout]   --> src/solution/s0560_subarray_sum_equals_k.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn subarray_sum(nums: Vec<i32>, k: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0409_longest_palindrome.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `longest_palindrome` is never used
[INFO] [stdout]   --> src/solution/s0409_longest_palindrome.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 39 |     pub fn longest_palindrome(s: String) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0415_add_strings.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `add_strings` is never used
[INFO] [stdout]   --> src/solution/s0415_add_strings.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 40 |     pub fn add_strings(num1: String, num2: String) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0051_n_queens.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `solve_n_queens` is never used
[INFO] [stdout]   --> src/solution/s0051_n_queens.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 33 |     pub fn solve_n_queens(n: i32) -> Vec<Vec<String>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0052_n_queens_ii.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `total_n_queens` is never used
[INFO] [stdout]   --> src/solution/s0052_n_queens_ii.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 32 |     pub fn total_n_queens(n: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s1480_running_sum_of_1d_array.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `running_sum` is never used
[INFO] [stdout]   --> src/solution/s1480_running_sum_of_1d_array.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 46 |     pub fn running_sum(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0867_transpose_matrix.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `transpose` is never used
[INFO] [stdout]   --> src/solution/s0867_transpose_matrix.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 36 |     pub fn transpose(matrix: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0290_word_pattern.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `word_pattern` is never used
[INFO] [stdout]   --> src/solution/s0290_word_pattern.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 41 |     pub fn word_pattern(pattern: String, s: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0763_partition_labels.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `partition_labels` is never used
[INFO] [stdout]   --> src/solution/s0763_partition_labels.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 37 |     pub fn partition_labels(s: String) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0043_multiply_strings.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `multiply` is never used
[INFO] [stdout]   --> src/solution/s0043_multiply_strings.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn multiply(num1: String, num2: String) -> String {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0049_group_anagrams.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `group_anagrams` is never used
[INFO] [stdout]   --> src/solution/s0049_group_anagrams.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 32 |     pub fn group_anagrams(strs: Vec<String>) -> Vec<Vec<String>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s1332_remove_palindromic_subsequences.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `remove_palindrome_sub` is never used
[INFO] [stdout]   --> src/solution/s1332_remove_palindromic_subsequences.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 44 |     pub fn remove_palindrome_sub(s: String) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0005_longest_palindromic_substring.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `longest_palindrome` is never used
[INFO] [stdout]   --> src/solution/s0005_longest_palindromic_substring.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 32 |     pub fn longest_palindrome(s: String) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0187_repeated_dna_sequences.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling leetcode-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `find_repeated_dna_sequences` is never used
[INFO] [stdout]   --> src/solution/s0187_repeated_dna_sequences.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 32 |     pub fn find_repeated_dna_sequences(s: String) -> Vec<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0002_add_two_numbers.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `add_two_numbers` is never used
[INFO] [stdout]   --> src/solution/s0002_add_two_numbers.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 56 |     pub fn add_two_numbers(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0003_longest_substring_without_repeating_characters.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `length_of_longest_substring` is never used
[INFO] [stdout]   --> src/solution/s0003_longest_substring_without_repeating_characters.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 40 |     pub fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0004_median_of_two_sorted_arrays.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `find_median_sorted_arrays` is never used
[INFO] [stdout]   --> src/solution/s0004_median_of_two_sorted_arrays.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 38 |     pub fn find_median_sorted_arrays(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0082_remove_duplicates_from_sorted_list_ii.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `delete_duplicates` is never used
[INFO] [stdout]   --> src/solution/s0082_remove_duplicates_from_sorted_list_ii.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 34 |     pub fn delete_duplicates(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0707_design_linked_list.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyLinkedList` is never constructed
[INFO] [stdout]   --> src/solution/s0707_design_linked_list.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct MyLinkedList {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/solution/s0707_design_linked_list.rs:54:6
[INFO] [stdout]    |
[INFO] [stdout] 54 | type Link = Option<Box<Node>>;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/solution/s0707_design_linked_list.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get`, `add_at_head`, `add_at_tail`, `add_at_index`, and `delete_at_index` are never used
[INFO] [stdout]    --> src/solution/s0707_design_linked_list.rs:67:8
[INFO] [stdout]     |
[INFO] [stdout]  66 | impl MyLinkedList {
[INFO] [stdout]     | ----------------- associated items in this implementation
[INFO] [stdout]  67 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  71 |     fn get(&self, index: i32) -> i32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  91 |     fn add_at_head(&mut self, val: i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  99 |     fn add_at_tail(&mut self, val: i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 |     fn add_at_index(&mut self, index: i32, val: i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 138 |     fn delete_at_index(&mut self, index: i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0024_swap_nodes_in_pairs.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `swap_pairs` is never used
[INFO] [stdout]   --> src/solution/s0024_swap_nodes_in_pairs.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 54 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 55 |     pub fn swap_pairs(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/problem/p0006_zigzag_conversion.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `convert` is never used
[INFO] [stdout]   --> src/problem/p0006_zigzag_conversion.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 52 |     pub fn convert(s: String, num_rows: i32) -> String {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `reverse_k_group` is never used
[INFO] [stdout]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 56 |     pub fn reverse_k_group(head: Option<Box<ListNode>>, k: i32) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/solution/s0409_longest_palindrome.rs:57:26
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 count += (*value - 1);
[INFO] [stdout]    |                          ^          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 57 -                 count += (*value - 1);
[INFO] [stdout] 57 +                 count += *value - 1;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter`
[INFO] [stdout]  --> src/solution/s0415_add_strings.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::iter;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]   --> src/solution/s0004_median_of_two_sorted_arrays.rs:78:28
[INFO] [stdout]    |
[INFO] [stdout] 78 |                     return (((max(left_a, left_b) + min(right_a, right_b)) as f64) / 2.0);
[INFO] [stdout]    |                            ^                                                            ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 78 -                     return (((max(left_a, left_b) + min(right_a, right_b)) as f64) / 2.0);
[INFO] [stdout] 78 +                     return ((max(left_a, left_b) + min(right_a, right_b)) as f64) / 2.0;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `surf::middleware::logger::new`
[INFO] [stdout]  --> src/solution/s0707_design_linked_list.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use surf::middleware::logger::new;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stdout]   --> src/solution/s0024_swap_nodes_in_pairs.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use std::borrow::BorrowMut;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/problem/p0006_zigzag_conversion.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | use std::ops::Deref;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::env;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]    --> src/main.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |     use std::fs;
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/solution/s0004_median_of_two_sorted_arrays.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 58 | /         loop {
[INFO] [stdout] 59 | |             let m_a: i32 = ((l + r) as f64 / 2.0).floor() as i32;
[INFO] [stdout] 60 | |             let m_b: i32 = half - m_a - 2;
[INFO] [stdout] ...  |
[INFO] [stdout] 87 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 88 |           unreachable!();
[INFO] [stdout]    |           ^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/solution/s1337_the_k_weakest_rows_in_a_matrix.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let [m, n] = [mat.len(), mat[0].len()];
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `inc` is never read
[INFO] [stdout]   --> src/solution/s0056_merge_intervals.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let mut inc = true;
[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 import: `futures::stream::StreamExt`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use futures::stream::StreamExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `size` is never read
[INFO] [stdout]   --> src/solution/s0763_partition_labels.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let mut size = 1;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]   --> src/solution/s0763_partition_labels.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let mut end = *map.get(&vec[ptr]).unwrap();
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ch`
[INFO] [stdout]   --> src/solution/s0005_longest_palindromic_substring.rs:54:19
[INFO] [stdout]    |
[INFO] [stdout] 54 |         for (idx, ch) in s.char_indices() {
[INFO] [stdout]    |                   ^^ help: if this is intentional, prefix it with an underscore: `_ch`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/solution/s0707_design_linked_list.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let mut next_next_node = if next_node.as_ref().is_some() {
[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/problem/p0006_zigzag_conversion.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         for i in 0..num_rows {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `num_rows` is assigned to, but never used
[INFO] [stdout]   --> src/problem/p0006_zigzag_conversion.rs:66:17
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let mut num_rows = 0;
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_num_rows` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/problem/p0006_zigzag_conversion.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut full = true;
[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/problem/p0025_reverse_nodes_in_k_group.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut head = &mut res;
[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/problem/p0025_reverse_nodes_in_k_group.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let mut prev: Option<Box<ListNode>> = None;
[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/problem/p0025_reverse_nodes_in_k_group.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let mut prev_group: Option<Box<ListNode>> = None;
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next_node`
[INFO] [stdout]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:88:25
[INFO] [stdout]    |
[INFO] [stdout] 88 |                 let mut next_node: Option<Box<ListNode>>;
[INFO] [stdout]    |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:83:17
[INFO] [stdout]    |
[INFO] [stdout] 83 |             let mut prev_group = prev_group;
[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/problem/p0025_reverse_nodes_in_k_group.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 let mut head = 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/problem/p0025_reverse_nodes_in_k_group.rs:87:21
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 let mut prev_group_new = head.clone();
[INFO] [stdout]    |                     ----^^^^^^^^^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `my_merge` is never used
[INFO] [stdout]   --> src/solution/s0056_merge_intervals.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn my_merge(intervals: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0706_design_hashmap.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0304_range_sum_query_2d_immutable.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `matrix` is never read
[INFO] [stdout]   --> src/solution/s0304_range_sum_query_2d_immutable.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 46 | struct NumMatrix {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 47 |     matrix: Vec<Vec<i32>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/s0707_design_linked_list.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `val` is never read
[INFO] [stdout]   --> src/solution/s0707_design_linked_list.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Node {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 58 |     val: i32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get` and `add_at_tail` are never used
[INFO] [stdout]   --> src/solution/s0707_design_linked_list.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | impl MyLinkedList {
[INFO] [stdout]    | ----------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 71 |     fn get(&self, index: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |     fn add_at_tail(&mut self, val: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/problem/p0006_zigzag_conversion.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `convert` is never used
[INFO] [stdout]   --> src/problem/p0006_zigzag_conversion.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 52 |     pub fn convert(s: String, num_rows: i32) -> String {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `is_random` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let mut is_random = false;
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_is_random` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `is_solving` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mut is_solving = false;
[INFO] [stdout]    |                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_is_solving` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `id` is never read
[INFO] [stdout]   --> src/main.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut id: u32 = 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: value assigned to `is_random` is never read
[INFO] [stdout]   --> src/main.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             is_random = true;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_solving` is never read
[INFO] [stdout]   --> src/main.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |             is_solving = true;
[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/main.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |             let mut mod_file_addon = Arc::new(Mutex::new(vec![]));
[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 `Result` that must be used
[INFO] [stdout]    --> src/main.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |             writeln!(lib_file, "{}", mod_file_addon.lock().unwrap().join("\n"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 116 |             let _ = writeln!(lib_file, "{}", mod_file_addon.lock().unwrap().join("\n"));
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:311:5
[INFO] [stdout]     |
[INFO] [stdout] 311 |     fs::write(mod_file, lines.join("\n"));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 311 |     let _ = fs::write(mod_file, lines.join("\n"));
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:317:5
[INFO] [stdout]     |
[INFO] [stdout] 317 |     writeln!(lib_file, "mod {};", solution_name);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 317 |     let _ = writeln!(lib_file, "mod {};", solution_name);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:360:9
[INFO] [stdout]     |
[INFO] [stdout] 360 |         writeln!(lib_file, "mod {};", file_name);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 360 |         let _ = writeln!(lib_file, "mod {};", file_name);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.79s
[INFO] running `Command { std: "docker" "inspect" "e611a4f101bc2f29a792034bcd446f397a844657374cc46f3b02f7b2f4435626", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e611a4f101bc2f29a792034bcd446f397a844657374cc46f3b02f7b2f4435626", kill_on_drop: false }`
[INFO] [stdout] e611a4f101bc2f29a792034bcd446f397a844657374cc46f3b02f7b2f4435626
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 12bc23bc8b6f12ca6befca16862b31a1ebdf98078491d1265f611e6de4635262
[INFO] running `Command { std: "docker" "start" "-a" "12bc23bc8b6f12ca6befca16862b31a1ebdf98078491d1265f611e6de4635262", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `to_list`
[INFO] [stderr]   --> src/solution/s0234_palindrome_linked_list.rs:26:32
[INFO] [stderr]    |
[INFO] [stderr] 26 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stderr]    |                                ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `to_list`
[INFO] [stderr]   --> src/solution/s0876_middle_of_the_linked_list.rs:27:42
[INFO] [stderr]    |
[INFO] [stderr] 27 | use crate::util::linked_list::{ListNode, to_list};
[INFO] [stderr]    |                                          ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/solution/s0409_longest_palindrome.rs:57:26
[INFO] [stderr]    |
[INFO] [stderr] 57 |                 count += (*value - 1);
[INFO] [stderr]    |                          ^          ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 57 -                 count += (*value - 1);
[INFO] [stderr] 57 +                 count += *value - 1;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter`
[INFO] [stderr]  --> src/solution/s0415_add_strings.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::iter;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `to_list`
[INFO] [stderr]   --> src/solution/s0002_add_two_numbers.rs:32:32
[INFO] [stderr]    |
[INFO] [stderr] 32 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stderr]    |                                ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `return` value
[INFO] [stderr]   --> src/solution/s0004_median_of_two_sorted_arrays.rs:78:28
[INFO] [stderr]    |
[INFO] [stderr] 78 |                     return (((max(left_a, left_b) + min(right_a, right_b)) as f64) / 2.0);
[INFO] [stderr]    |                            ^                                                            ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 78 -                     return (((max(left_a, left_b) + min(right_a, right_b)) as f64) / 2.0);
[INFO] [stderr] 78 +                     return ((max(left_a, left_b) + min(right_a, right_b)) as f64) / 2.0;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `to_list`
[INFO] [stderr]  --> src/solution/s0082_remove_duplicates_from_sorted_list_ii.rs:1:32
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stderr]   |                                ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `surf::middleware::logger::new`
[INFO] [stderr]  --> src/solution/s0707_design_linked_list.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use surf::middleware::logger::new;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stderr]   --> src/solution/s0024_swap_nodes_in_pairs.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 | use std::borrow::BorrowMut;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `to_list`
[INFO] [stderr]   --> src/solution/s0024_swap_nodes_in_pairs.rs:31:32
[INFO] [stderr]    |
[INFO] [stderr] 31 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stderr]    |                                ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Deref`
[INFO] [stderr]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 | use std::ops::Deref;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `to_list`
[INFO] [stderr]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:32:32
[INFO] [stderr]    |
[INFO] [stderr] 32 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stderr]    |                                ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/solution/s0004_median_of_two_sorted_arrays.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 58 | /         loop {
[INFO] [stderr] 59 | |             let m_a: i32 = ((l + r) as f64 / 2.0).floor() as i32;
[INFO] [stderr] 60 | |             let m_b: i32 = half - m_a - 2;
[INFO] [stderr] ...  |
[INFO] [stderr] 87 | |         }
[INFO] [stderr]    | |_________- any code following this expression is unreachable
[INFO] [stderr] 88 |           unreachable!();
[INFO] [stderr]    |           ^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/solution/s1337_the_k_weakest_rows_in_a_matrix.rs:67:17
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let [m, n] = [mat.len(), mat[0].len()];
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `inc` is never read
[INFO] [stderr]   --> src/solution/s0056_merge_intervals.rs:73:17
[INFO] [stderr]    |
[INFO] [stderr] 73 |         let mut inc = true;
[INFO] [stderr]    |                 ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `size` is never read
[INFO] [stderr]   --> src/solution/s0763_partition_labels.rs:51:17
[INFO] [stderr]    |
[INFO] [stderr] 51 |         let mut size = 1;
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `end` is never read
[INFO] [stderr]   --> src/solution/s0763_partition_labels.rs:52:17
[INFO] [stderr]    |
[INFO] [stderr] 52 |         let mut end = *map.get(&vec[ptr]).unwrap();
[INFO] [stderr]    |                 ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ch`
[INFO] [stderr]   --> src/solution/s0005_longest_palindromic_substring.rs:54:19
[INFO] [stderr]    |
[INFO] [stderr] 54 |         for (idx, ch) in s.char_indices() {
[INFO] [stderr]    |                   ^^ help: if this is intentional, prefix it with an underscore: `_ch`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/solution/s0707_design_linked_list.rs:156:13
[INFO] [stderr]     |
[INFO] [stderr] 156 |         let mut next_next_node = if next_node.as_ref().is_some() {
[INFO] [stderr]     |             ----^^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/problem/p0006_zigzag_conversion.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |         for i in 0..num_rows {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `num_rows` is assigned to, but never used
[INFO] [stderr]   --> src/problem/p0006_zigzag_conversion.rs:66:17
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let mut num_rows = 0;
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_num_rows` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/problem/p0006_zigzag_conversion.rs:67:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let mut full = true;
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/problem/p0025_reverse_nodes_in_k_group.rs:109:13
[INFO] [stderr]     |
[INFO] [stderr] 109 |         let mut head = &mut res;
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/problem/p0025_reverse_nodes_in_k_group.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 110 |         let mut prev: Option<Box<ListNode>> = None;
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/problem/p0025_reverse_nodes_in_k_group.rs:111:13
[INFO] [stderr]     |
[INFO] [stderr] 111 |         let mut prev_group: Option<Box<ListNode>> = None;
[INFO] [stderr]     |             ----^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `next_node`
[INFO] [stderr]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:88:25
[INFO] [stderr]    |
[INFO] [stderr] 88 |                 let mut next_node: Option<Box<ListNode>>;
[INFO] [stderr]    |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_node`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:83:17
[INFO] [stderr]    |
[INFO] [stderr] 83 |             let mut prev_group = prev_group;
[INFO] [stderr]    |                 ----^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:85:21
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 let mut head = head;
[INFO] [stderr]    |                     ----^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:87:21
[INFO] [stderr]    |
[INFO] [stderr] 87 |                 let mut prev_group_new = head.clone();
[INFO] [stderr]    |                     ----^^^^^^^^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0013_roman_to_integer.rs:49:12
[INFO] [stderr]    |
[INFO] [stderr] 49 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `roman_to_int` is never used
[INFO] [stderr]   --> src/solution/s0013_roman_to_integer.rs:57:12
[INFO] [stderr]    |
[INFO] [stderr] 56 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 57 |     pub fn roman_to_int(s: String) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0234_palindrome_linked_list.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `is_palindrome` is never used
[INFO] [stderr]   --> src/solution/s0234_palindrome_linked_list.rs:50:12
[INFO] [stderr]    |
[INFO] [stderr] 49 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 50 |     pub fn is_palindrome(head: Option<Box<ListNode>>) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0383_ransom_note.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `can_construct` is never used
[INFO] [stderr]   --> src/solution/s0383_ransom_note.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 30 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 31 |     pub fn can_construct(ransom_note: String, magazine: String) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0412_fizz_buzz.rs:27:12
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `fizz_buzz` is never used
[INFO] [stderr]   --> src/solution/s0412_fizz_buzz.rs:35:12
[INFO] [stderr]    |
[INFO] [stderr] 34 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 35 |     pub fn fizz_buzz(n: i32) -> Vec<String> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0876_middle_of_the_linked_list.rs:26:12
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `middle_node` is never used
[INFO] [stderr]   --> src/solution/s0876_middle_of_the_linked_list.rs:51:12
[INFO] [stderr]    |
[INFO] [stderr] 50 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 51 |     pub fn middle_node(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s1337_the_k_weakest_rows_in_a_matrix.rs:58:12
[INFO] [stderr]    |
[INFO] [stderr] 58 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `k_weakest_rows` is never used
[INFO] [stderr]   --> src/solution/s1337_the_k_weakest_rows_in_a_matrix.rs:66:12
[INFO] [stderr]    |
[INFO] [stderr] 65 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 66 |     pub fn k_weakest_rows(mat: Vec<Vec<i32>>, k: i32) -> Vec<i32> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s1672_richest_customer_wealth.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `maximum_wealth` is never used
[INFO] [stderr]   --> src/solution/s1672_richest_customer_wealth.rs:47:12
[INFO] [stderr]    |
[INFO] [stderr] 46 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 47 |     pub fn maximum_wealth(accounts: Vec<Vec<i32>>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s1342_number_of_steps_to_reduce_a_number_to_zero.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `number_of_steps` is never used
[INFO] [stderr]   --> src/solution/s1342_number_of_steps_to_reduce_a_number_to_zero.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 47 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 48 |     pub fn number_of_steps(num: i32) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0136_single_number.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `single_number` is never used
[INFO] [stderr]   --> src/solution/s0136_single_number.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 31 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 32 |     pub fn single_number(nums: Vec<i32>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0169_majority_element.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated functions `majority_element`, `majority_element_follow_up`, and `majority_element_solution` are never used
[INFO] [stderr]   --> src/solution/s0169_majority_element.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 30 | impl Solution {
[INFO] [stderr]    | ------------- associated functions in this implementation
[INFO] [stderr] 31 |     pub fn majority_element(nums: Vec<i32>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 42 |     pub fn majority_element_follow_up(nums: Vec<i32>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 62 |     pub fn majority_element_solution(nums: Vec<i32>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0001_two_sum.rs:35:12
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `two_sum` is never used
[INFO] [stderr]   --> src/solution/s0001_two_sum.rs:43:12
[INFO] [stderr]    |
[INFO] [stderr] 42 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 43 |     pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0015_3sum.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `three_sum` is never used
[INFO] [stderr]   --> src/solution/s0015_3sum.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 30 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 31 |     pub fn three_sum(nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0167_two_sum_ii_input_array_is_sorted.rs:37:12
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `two_sum` is never used
[INFO] [stderr]   --> src/solution/s0167_two_sum_ii_input_array_is_sorted.rs:45:12
[INFO] [stderr]    |
[INFO] [stderr] 44 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 45 |     pub fn two_sum(numbers: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0056_merge_intervals.rs:26:12
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated functions `merge` and `my_merge` are never used
[INFO] [stderr]   --> src/solution/s0056_merge_intervals.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 33 | impl Solution {
[INFO] [stderr]    | ------------- associated functions in this implementation
[INFO] [stderr] 34 |     pub fn merge(intervals: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 58 |     pub fn my_merge(intervals: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0075_sort_colors.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `sort_colors` is never used
[INFO] [stderr]   --> src/solution/s0075_sort_colors.rs:37:12
[INFO] [stderr]    |
[INFO] [stderr] 36 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 37 |     pub fn sort_colors(nums: &mut Vec<i32>) {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0706_design_hashmap.rs:38:12
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MyHashMap` is never constructed
[INFO] [stderr]   --> src/solution/s0706_design_hashmap.rs:46:8
[INFO] [stderr]    |
[INFO] [stderr] 46 | struct MyHashMap {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `put`, `get`, and `remove` are never used
[INFO] [stderr]   --> src/solution/s0706_design_hashmap.rs:56:8
[INFO] [stderr]    |
[INFO] [stderr] 55 | impl MyHashMap {
[INFO] [stderr]    | -------------- associated items in this implementation
[INFO] [stderr] 56 |     fn new() -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 63 |     fn put(&mut self, key: i32, value: i32) {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 72 |     fn get(&self, key: i32) -> i32 {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 80 |     fn remove(&mut self, key: i32) {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0048_rotate_image.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `rotate` is never used
[INFO] [stderr]   --> src/solution/s0048_rotate_image.rs:33:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 33 |     pub fn rotate(matrix: &mut Vec<Vec<i32>>) {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0119_pascals_triangle_ii.rs:26:12
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `get_row` is never used
[INFO] [stderr]   --> src/solution/s0119_pascals_triangle_ii.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 33 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 34 |     pub fn get_row(row_index: i32) -> Vec<i32> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0059_spiral_matrix_ii.rs:22:12
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `generate_matrix` is never used
[INFO] [stderr]   --> src/solution/s0059_spiral_matrix_ii.rs:30:12
[INFO] [stderr]    |
[INFO] [stderr] 29 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 30 |     pub fn generate_matrix(n: i32) -> Vec<Vec<i32>> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0240_search_a_2d_matrix_ii.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `search_matrix` is never used
[INFO] [stderr]   --> src/solution/s0240_search_a_2d_matrix_ii.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 39 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 40 |     pub fn search_matrix(matrix: Vec<Vec<i32>>, target: i32) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0435_non_overlapping_intervals.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `erase_overlap_intervals` is never used
[INFO] [stderr]   --> src/solution/s0435_non_overlapping_intervals.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 39 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 40 |     pub fn erase_overlap_intervals(intervals: Vec<Vec<i32>>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0304_range_sum_query_2d_immutable.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `NumMatrix` is never constructed
[INFO] [stderr]   --> src/solution/s0304_range_sum_query_2d_immutable.rs:46:8
[INFO] [stderr]    |
[INFO] [stderr] 46 | struct NumMatrix {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `sum_region` are never used
[INFO] [stderr]   --> src/solution/s0304_range_sum_query_2d_immutable.rs:56:8
[INFO] [stderr]    |
[INFO] [stderr] 55 | impl NumMatrix {
[INFO] [stderr]    | -------------- associated items in this implementation
[INFO] [stderr] 56 |     fn new(matrix: Vec<Vec<i32>>) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 75 |     fn sum_region(&self, row1: i32, col1: i32, row2: i32, col2: i32) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0238_product_of_array_except_self.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `product_except_self` is never used
[INFO] [stderr]   --> src/solution/s0238_product_of_array_except_self.rs:33:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 33 |     pub fn product_except_self(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0334_increasing_triplet_subsequence.rs:33:12
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `increasing_triplet` is never used
[INFO] [stderr]   --> src/solution/s0334_increasing_triplet_subsequence.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 40 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 41 |     pub fn increasing_triplet(nums: Vec<i32>) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0560_subarray_sum_equals_k.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `subarray_sum` is never used
[INFO] [stderr]   --> src/solution/s0560_subarray_sum_equals_k.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 28 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 29 |     pub fn subarray_sum(nums: Vec<i32>, k: i32) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0409_longest_palindrome.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `longest_palindrome` is never used
[INFO] [stderr]   --> src/solution/s0409_longest_palindrome.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 38 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 39 |     pub fn longest_palindrome(s: String) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0415_add_strings.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `add_strings` is never used
[INFO] [stderr]   --> src/solution/s0415_add_strings.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 39 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 40 |     pub fn add_strings(num1: String, num2: String) -> String {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0051_n_queens.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `solve_n_queens` is never used
[INFO] [stderr]   --> src/solution/s0051_n_queens.rs:33:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 33 |     pub fn solve_n_queens(n: i32) -> Vec<Vec<String>> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0052_n_queens_ii.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `total_n_queens` is never used
[INFO] [stderr]   --> src/solution/s0052_n_queens_ii.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 31 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 32 |     pub fn total_n_queens(n: i32) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s1480_running_sum_of_1d_array.rs:38:12
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `running_sum` is never used
[INFO] [stderr]   --> src/solution/s1480_running_sum_of_1d_array.rs:46:12
[INFO] [stderr]    |
[INFO] [stderr] 45 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 46 |     pub fn running_sum(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0867_transpose_matrix.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `transpose` is never used
[INFO] [stderr]   --> src/solution/s0867_transpose_matrix.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 35 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 36 |     pub fn transpose(matrix: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0290_word_pattern.rs:33:12
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `word_pattern` is never used
[INFO] [stderr]   --> src/solution/s0290_word_pattern.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 40 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 41 |     pub fn word_pattern(pattern: String, s: String) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0763_partition_labels.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `partition_labels` is never used
[INFO] [stderr]   --> src/solution/s0763_partition_labels.rs:37:12
[INFO] [stderr]    |
[INFO] [stderr] 36 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 37 |     pub fn partition_labels(s: String) -> Vec<i32> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0043_multiply_strings.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `multiply` is never used
[INFO] [stderr]   --> src/solution/s0043_multiply_strings.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 28 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 29 |     pub fn multiply(num1: String, num2: String) -> String {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0049_group_anagrams.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `group_anagrams` is never used
[INFO] [stderr]   --> src/solution/s0049_group_anagrams.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 31 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 32 |     pub fn group_anagrams(strs: Vec<String>) -> Vec<Vec<String>> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s1332_remove_palindromic_subsequences.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `remove_palindrome_sub` is never used
[INFO] [stderr]   --> src/solution/s1332_remove_palindromic_subsequences.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 43 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 44 |     pub fn remove_palindrome_sub(s: String) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0005_longest_palindromic_substring.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `longest_palindrome` is never used
[INFO] [stderr]   --> src/solution/s0005_longest_palindromic_substring.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 31 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 32 |     pub fn longest_palindrome(s: String) -> String {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0187_repeated_dna_sequences.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `find_repeated_dna_sequences` is never used
[INFO] [stderr]   --> src/solution/s0187_repeated_dna_sequences.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 31 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 32 |     pub fn find_repeated_dna_sequences(s: String) -> Vec<String> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0002_add_two_numbers.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `add_two_numbers` is never used
[INFO] [stderr]   --> src/solution/s0002_add_two_numbers.rs:56:12
[INFO] [stderr]    |
[INFO] [stderr] 55 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 56 |     pub fn add_two_numbers(
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0003_longest_substring_without_repeating_characters.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `length_of_longest_substring` is never used
[INFO] [stderr]   --> src/solution/s0003_longest_substring_without_repeating_characters.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 39 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 40 |     pub fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0004_median_of_two_sorted_arrays.rs:30:12
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `find_median_sorted_arrays` is never used
[INFO] [stderr]   --> src/solution/s0004_median_of_two_sorted_arrays.rs:38:12
[INFO] [stderr]    |
[INFO] [stderr] 37 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 38 |     pub fn find_median_sorted_arrays(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0082_remove_duplicates_from_sorted_list_ii.rs:26:12
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `delete_duplicates` is never used
[INFO] [stderr]   --> src/solution/s0082_remove_duplicates_from_sorted_list_ii.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 33 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 34 |     pub fn delete_duplicates(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0707_design_linked_list.rs:43:12
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MyLinkedList` is never constructed
[INFO] [stderr]   --> src/solution/s0707_design_linked_list.rs:50:8
[INFO] [stderr]    |
[INFO] [stderr] 50 | struct MyLinkedList {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `Link` is never used
[INFO] [stderr]   --> src/solution/s0707_design_linked_list.rs:54:6
[INFO] [stderr]    |
[INFO] [stderr] 54 | type Link = Option<Box<Node>>;
[INFO] [stderr]    |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Node` is never constructed
[INFO] [stderr]   --> src/solution/s0707_design_linked_list.rs:57:8
[INFO] [stderr]    |
[INFO] [stderr] 57 | struct Node {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `get`, `add_at_head`, `add_at_tail`, `add_at_index`, and `delete_at_index` are never used
[INFO] [stderr]    --> src/solution/s0707_design_linked_list.rs:67:8
[INFO] [stderr]     |
[INFO] [stderr]  66 | impl MyLinkedList {
[INFO] [stderr]     | ----------------- associated items in this implementation
[INFO] [stderr]  67 |     fn new() -> Self {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] ...
[INFO] [stderr]  71 |     fn get(&self, index: i32) -> i32 {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] ...
[INFO] [stderr]  91 |     fn add_at_head(&mut self, val: i32) {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr]  99 |     fn add_at_tail(&mut self, val: i32) {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 112 |     fn add_at_index(&mut self, index: i32, val: i32) {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 138 |     fn delete_at_index(&mut self, index: i32) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/solution/s0024_swap_nodes_in_pairs.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `swap_pairs` is never used
[INFO] [stderr]   --> src/solution/s0024_swap_nodes_in_pairs.rs:55:12
[INFO] [stderr]    |
[INFO] [stderr] 54 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 55 |     pub fn swap_pairs(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/problem/p0006_zigzag_conversion.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `convert` is never used
[INFO] [stderr]   --> src/problem/p0006_zigzag_conversion.rs:52:12
[INFO] [stderr]    |
[INFO] [stderr] 51 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 52 |     pub fn convert(s: String, num_rows: i32) -> String {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub struct Solution {}
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `reverse_k_group` is never used
[INFO] [stderr]   --> src/problem/p0025_reverse_nodes_in_k_group.rs:56:12
[INFO] [stderr]    |
[INFO] [stderr] 55 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 56 |     pub fn reverse_k_group(head: Option<Box<ListNode>>, k: i32) -> Option<Box<ListNode>> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter`
[INFO] [stderr]  --> src/solution/s0415_add_strings.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::iter;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]   --> src/problem/p0006_zigzag_conversion.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |     use super::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `my_merge` is never used
[INFO] [stderr]   --> src/solution/s0056_merge_intervals.rs:58:12
[INFO] [stderr]    |
[INFO] [stderr] 33 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 58 |     pub fn my_merge(intervals: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `matrix` is never read
[INFO] [stderr]   --> src/solution/s0304_range_sum_query_2d_immutable.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 46 | struct NumMatrix {
[INFO] [stderr]    |        --------- field in this struct
[INFO] [stderr] 47 |     matrix: Vec<Vec<i32>>,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `val` is never read
[INFO] [stderr]   --> src/solution/s0707_design_linked_list.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 57 | struct Node {
[INFO] [stderr]    |        ---- field in this struct
[INFO] [stderr] 58 |     val: i32,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: methods `get` and `add_at_tail` are never used
[INFO] [stderr]   --> src/solution/s0707_design_linked_list.rs:71:8
[INFO] [stderr]    |
[INFO] [stderr] 66 | impl MyLinkedList {
[INFO] [stderr]    | ----------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 71 |     fn get(&self, index: i32) -> i32 {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 99 |     fn add_at_tail(&mut self, val: i32) {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode-rust` (lib) generated 126 warnings (run `cargo fix --lib -p leetcode-rust` to apply 20 suggestions)
[INFO] [stderr] warning: `leetcode-rust` (lib test) generated 33 warnings (27 duplicates) (run `cargo fix --lib -p leetcode-rust --tests` to apply 2 suggestions)
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::env;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]    --> src/main.rs:152:9
[INFO] [stderr]     |
[INFO] [stderr] 152 |     use std::fs;
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::stream::StreamExt`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use futures::stream::StreamExt;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `is_random` is assigned to, but never used
[INFO] [stderr]   --> src/main.rs:35:17
[INFO] [stderr]    |
[INFO] [stderr] 35 |         let mut is_random = false;
[INFO] [stderr]    |                 ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_is_random` instead
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `is_solving` is assigned to, but never used
[INFO] [stderr]   --> src/main.rs:36:17
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let mut is_solving = false;
[INFO] [stderr]    |                 ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_is_solving` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `id` is never read
[INFO] [stderr]   --> src/main.rs:37:17
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let mut id: u32 = 0;
[INFO] [stderr]    |                 ^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_random` is never read
[INFO] [stderr]   --> src/main.rs:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |             is_random = true;
[INFO] [stderr]    |             ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_solving` is never read
[INFO] [stderr]   --> src/main.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |             is_solving = true;
[INFO] [stderr]    |             ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:72:17
[INFO] [stderr]    |
[INFO] [stderr] 72 |             let mut mod_file_addon = Arc::new(Mutex::new(vec![]));
[INFO] [stderr]    |                 ----^^^^^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |             writeln!(lib_file, "{}", mod_file_addon.lock().unwrap().join("\n"));
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 116 |             let _ = writeln!(lib_file, "{}", mod_file_addon.lock().unwrap().join("\n"));
[INFO] [stderr]     |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:311:5
[INFO] [stderr]     |
[INFO] [stderr] 311 |     fs::write(mod_file, lines.join("\n"));
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 311 |     let _ = fs::write(mod_file, lines.join("\n"));
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:317:5
[INFO] [stderr]     |
[INFO] [stderr] 317 |     writeln!(lib_file, "mod {};", solution_name);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 317 |     let _ = writeln!(lib_file, "mod {};", solution_name);
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:360:9
[INFO] [stderr]     |
[INFO] [stderr] 360 |         writeln!(lib_file, "mod {};", file_name);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 360 |         let _ = writeln!(lib_file, "mod {};", file_name);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode-rust` (bin "leetcode-rust" test) generated 13 warnings (run `cargo fix --bin "leetcode-rust" --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/leetcode_rust-8eb0cb31f257d184)
[INFO] [stdout] 
[INFO] [stdout] running 48 tests
[INFO] [stdout] test problem::p0006_zigzag_conversion::tests::test_6 ... ok
[INFO] [stdout] test solution::s0001_two_sum::tests::test_1 ... ok
[INFO] [stdout] test solution::s0002_add_two_numbers::tests::test_2 ... ok
[INFO] [stdout] test solution::s0004_median_of_two_sorted_arrays::tests::test_4 ... ok
[INFO] [stdout] test solution::s0003_longest_substring_without_repeating_characters::tests::test_3 ... ok
[INFO] [stdout] test solution::s0013_roman_to_integer::tests::test_13 ... ok
[INFO] [stdout] test solution::s0005_longest_palindromic_substring::tests::test_5 ... ok
[INFO] [stdout] test solution::s0015_3sum::tests::test_15 ... ok
[INFO] [stdout] test solution::s0048_rotate_image::tests::test_48 ... ok
[INFO] [stdout] test solution::s0043_multiply_strings::tests::test_43 ... ok
[INFO] [stdout] test solution::s0024_swap_nodes_in_pairs::tests::test_24 ... ok
[INFO] [stdout] test solution::s0051_n_queens::tests::test_51 ... ok
[INFO] [stdout] test solution::s0059_spiral_matrix_ii::tests::test_59 ... ok
[INFO] [stdout] test solution::s0075_sort_colors::tests::test_75 ... ok
[INFO] [stdout] test solution::s0136_single_number::tests::test_136 ... ok
[INFO] [stdout] test solution::s0169_majority_element::tests::test_169 ... ok
[INFO] [stdout] test solution::s0238_product_of_array_except_self::tests::test_238 ... ok
[INFO] [stdout] test solution::s0240_search_a_2d_matrix_ii::tests::test_240 ... ok
[INFO] [stdout] test solution::s0334_increasing_triplet_subsequence::tests::test_334 ... ok
[INFO] [stdout] test solution::s0383_ransom_note::tests::test_383 ... ok
[INFO] [stdout] test solution::s0412_fizz_buzz::tests::test_412 ... ok
[INFO] [stdout] test solution::s0052_n_queens_ii::tests::test_52 ... ok
[INFO] [stdout] test solution::s0409_longest_palindrome::tests::test_409 ... ok
[INFO] [stdout] test solution::s0119_pascals_triangle_ii::tests::test_119 ... ok
[INFO] [stdout] test solution::s0056_merge_intervals::tests::test_56 ... ok
[INFO] [stdout] test solution::s0290_word_pattern::tests::test_290 ... ok
[INFO] [stdout] test solution::s0435_non_overlapping_intervals::tests::test_435 ... ok
[INFO] [stdout] test solution::s0169_majority_element::tests::test_169_solution ... ok
[INFO] [stdout] test solution::s0304_range_sum_query_2d_immutable::tests::test_304 ... ok
[INFO] [stdout] test solution::s0169_majority_element::tests::test_169_follow_up ... ok
[INFO] [stdout] test solution::s0415_add_strings::tests::test_415 ... ok
[INFO] [stdout] test solution::s0082_remove_duplicates_from_sorted_list_ii::tests::test_82 ... ok
[INFO] [stdout] test solution::s0234_palindrome_linked_list::tests::test_234 ... ok
[INFO] [stdout] test solution::s0560_subarray_sum_equals_k::tests::test_560 ... ok
[INFO] [stdout] test solution::s0706_design_hashmap::tests::test_706 ... ok
[INFO] [stdout] test solution::s0867_transpose_matrix::tests::test_867 ... ok
[INFO] [stdout] test solution::s0707_design_linked_list::tests::test_707 ... ok
[INFO] [stdout] test solution::s1332_remove_palindromic_subsequences::tests::test_1332 ... ok
[INFO] [stdout] test solution::s1672_richest_customer_wealth::tests::test_1672 ... ok
[INFO] [stdout] test solution::s1337_the_k_weakest_rows_in_a_matrix::tests::test_1337 ... ok
[INFO] [stdout] test solution::s1342_number_of_steps_to_reduce_a_number_to_zero::tests::test_1342 ... ok
[INFO] [stdout] test solution::s1480_running_sum_of_1d_array::tests::test_1480 ... ok
[INFO] [stdout] test solution::s0167_two_sum_ii_input_array_is_sorted::tests::test_167 ... ok
[INFO] [stdout] test solution::s0187_repeated_dna_sequences::tests::test_187 ... ok
[INFO] [stdout] test solution::s0763_partition_labels::tests::test_763 ... ok
[INFO] [stdout] test solution::s0876_middle_of_the_linked_list::tests::test_876 ... ok
[INFO] [stdout] test solution::s0049_group_anagrams::tests::test_49 ... ok
[INFO] [stdout] test problem::p0025_reverse_nodes_in_k_group::tests::test_25 ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- problem::p0025_reverse_nodes_in_k_group::tests::test_25 stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'problem::p0025_reverse_nodes_in_k_group::tests::test_25' panicked at src/problem/p0025_reverse_nodes_in_k_group.rs:127:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: Some(ListNode { val: 5, next: None })
[INFO] [stdout]  right: Some(ListNode { val: 2, next: Some(ListNode { val: 1, next: Some(ListNode { val: 4, next: Some(ListNode { val: 3, next: Some(ListNode { val: 5, next: None }) }) }) }) })
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x621b6d647322 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x621b6d647322 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x621b6d647322 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x621b6d647322 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x621b6d66cb23 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x621b6d66cb23 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x621b6d6442a3 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x621b6d6442a3 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x621b6d647172 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x621b6d648899 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x621b6d6486ce - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x621b6d5fd204 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb6bd65493727d71a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x621b6d5fd204 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x621b6d64926e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h318e4efb8c1a5689
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x621b6d64926e - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x621b6d64903a - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x621b6d647819 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x621b6d648ccd - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x621b6d66b1c0 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x621b6d66b513 - core::panicking::assert_failed_inner::h102b4539a88470c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:448:17
[INFO] [stdout]   20:     0x621b6d586a03 - core::panicking::assert_failed::h24af7f29cab6098a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:403:5
[INFO] [stdout]   21:     0x621b6d5ab386 - leetcode_rust::problem::p0025_reverse_nodes_in_k_group::tests::test_25::h3cd602eb6781edd5
[INFO] [stdout]                                at /opt/rustwide/workdir/src/problem/p0025_reverse_nodes_in_k_group.rs:127:9
[INFO] [stdout]   22:     0x621b6d5ab107 - leetcode_rust::problem::p0025_reverse_nodes_in_k_group::tests::test_25::{{closure}}::hcc83d7094123917d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/problem/p0025_reverse_nodes_in_k_group.rs:126:17
[INFO] [stdout]   23:     0x621b6d5bd7b6 - core::ops::function::FnOnce::call_once::h35a4096cb3e6783b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   24:     0x621b6d602a6b - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   25:     0x621b6d602a6b - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   26:     0x621b6d601ba5 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   27:     0x621b6d601ba5 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x621b6d601ba5 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   29:     0x621b6d601ba5 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   30:     0x621b6d601ba5 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x621b6d601ba5 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   32:     0x621b6d601ba5 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   33:     0x621b6d5c57a4 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   34:     0x621b6d5c57a4 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x621b6d5c917a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x621b6d5c917a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x621b6d5c917a - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   38:     0x621b6d5c917a - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   39:     0x621b6d5c917a - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x621b6d5c917a - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x621b6d5c917a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   42:     0x621b6d64c1ef - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5924238c754de3b8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   43:     0x621b6d64c1ef - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17
[INFO] [stdout]   44:     0x78f7e063caa4 - <unknown>
[INFO] [stdout]   45:     0x78f7e06c9a34 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     problem::p0025_reverse_nodes_in_k_group::tests::test_25
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 47 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "12bc23bc8b6f12ca6befca16862b31a1ebdf98078491d1265f611e6de4635262", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12bc23bc8b6f12ca6befca16862b31a1ebdf98078491d1265f611e6de4635262", kill_on_drop: false }`
[INFO] [stdout] 12bc23bc8b6f12ca6befca16862b31a1ebdf98078491d1265f611e6de4635262
