[INFO] cloning repository https://github.com/FUTingFei/algo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FUTingFei/algo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFUTingFei%2Falgo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFUTingFei%2Falgo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 37afd0c150a545c2c986a15c9cd7cd73532edfa9
[INFO] checking FUTingFei/algo against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFUTingFei%2Falgo" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FUTingFei/algo on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FUTingFei/algo
[INFO] finished tweaking git repo https://github.com/FUTingFei/algo
[INFO] tweaked toml for git repo https://github.com/FUTingFei/algo written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/FUTingFei/algo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 509ee5907fe6be126e5dd05b1de3adcd7239719b5a2316f54c4e5bf13eeadefb
[INFO] running `Command { std: "docker" "start" "-a" "509ee5907fe6be126e5dd05b1de3adcd7239719b5a2316f54c4e5bf13eeadefb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "509ee5907fe6be126e5dd05b1de3adcd7239719b5a2316f54c4e5bf13eeadefb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "509ee5907fe6be126e5dd05b1de3adcd7239719b5a2316f54c4e5bf13eeadefb", kill_on_drop: false }`
[INFO] [stdout] 509ee5907fe6be126e5dd05b1de3adcd7239719b5a2316f54c4e5bf13eeadefb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7d6fee3b52f91c272b9dfdf3adc8cd391991163619b060df16bcab200259683e
[INFO] running `Command { std: "docker" "start" "-a" "7d6fee3b52f91c272b9dfdf3adc8cd391991163619b060df16bcab200259683e", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.48
[INFO] [stderr]    Compiling leetcode_test v0.1.1
[INFO] [stderr]     Checking leetcode_prelude v0.2.2
[INFO] [stderr]     Checking algo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/interview/i00example.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     use super::*;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::btree`
[INFO] [stdout]  --> src/interview/i07build_tree.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use leetcode_prelude::btree;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::linkedlist`
[INFO] [stdout]  --> src/n002add_two_numbers.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use leetcode_prelude::linkedlist;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/n1002common_chars.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::linkedlist`
[INFO] [stdout]  --> src/n206reverse_list.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use leetcode_prelude::linkedlist;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/n392is_subsequence.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::linkedlist`
[INFO] [stdout]  --> src/n876middle_node.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use leetcode_prelude::linkedlist;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::btree`
[INFO] [stdout]  --> src/n100is_same_tree.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use leetcode_prelude::btree;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::btree`
[INFO] [stdout]  --> src/n107level_order_bottom.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use leetcode_prelude::btree;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::btree`
[INFO] [stdout]  --> src/n108sorted_array_to_bst.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use leetcode_prelude::btree;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::btree`
[INFO] [stdout]  --> src/n110is_balanced.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use leetcode_prelude::btree;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::btree`
[INFO] [stdout]  --> src/n111min_depth.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use leetcode_prelude::btree;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::btree`
[INFO] [stdout]  --> src/n112has_path_sum.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use leetcode_prelude::btree;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::btree`
[INFO] [stdout]  --> src/n226invert_tree.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use leetcode_prelude::btree;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::btree`
[INFO] [stdout]  --> src/n257binary_tree_paths.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use leetcode_prelude::btree;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/n401read_binary_watch.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::btree`
[INFO] [stdout]  --> src/n404sum_of_left_leaves.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use leetcode_prelude::btree;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::btree`
[INFO] [stdout]  --> src/n437path_sum.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use leetcode_prelude::btree;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/n392is_subsequence.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |                 return false;
[INFO] [stdout]    |                 ------------ any code following this expression is unreachable
[INFO] [stdout] 17 |                 break;
[INFO] [stdout]    |                 ^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/n392is_subsequence.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |                 return false;
[INFO] [stdout]    |                 ------------ any code following this expression is unreachable
[INFO] [stdout] 17 |                 break;
[INFO] [stdout]    |                 ^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/interview/i11min_array.rs:33:41
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn in_order(v: &Vec<i32>, s: usize, e: usize) -> i32 {
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nums1`
[INFO] [stdout]  --> src/n004find_median_sorted_arrays.rs:4:38
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn find_median_sorted_arrays(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]   |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_nums1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nums2`
[INFO] [stdout]  --> src/n004find_median_sorted_arrays.rs:4:55
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn find_median_sorted_arrays(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]   |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_nums2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `re` is never read
[INFO] [stdout]  --> src/n035search_insert.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut re = 0;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]  --> src/n058length_of_last_word.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut res = 0;
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `i` is assigned to, but never used
[INFO] [stdout]  --> src/n058length_of_last_word.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut i = 0;
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_i` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]  --> src/n310find_min_height_trees.rs:4:34
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn find_min_height_trees(n: i32, edges: Vec<Vec<i32>>) -> Vec<i32> {
[INFO] [stdout]   |                                  ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `edges`
[INFO] [stdout]  --> src/n310find_min_height_trees.rs:4:42
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn find_min_height_trees(n: i32, edges: Vec<Vec<i32>>) -> Vec<i32> {
[INFO] [stdout]   |                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_edges`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]   --> src/n392is_subsequence.rs:13:22
[INFO] [stdout]    |
[INFO] [stdout] 13 |                 let (first, last) = t.split_at(ni as usize + 1);
[INFO] [stdout]    |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> src/n437path_sum.rs:19:21
[INFO] [stdout]    |
[INFO] [stdout] 19 |         if let Some(node) = root.clone() {
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]  --> src/n441arrange_coins.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let mut res = 0;
[INFO] [stdout]   |             ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/n392is_subsequence.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let mut s = s;
[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: struct is never constructed: `CQueue`
[INFO] [stdout]  --> src/interview/i09c_queue.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct CQueue {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/interview/i09c_queue.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn new() -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append_tail`
[INFO] [stdout]   --> src/interview/i09c_queue.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn append_tail(&mut self, value: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_head`
[INFO] [stdout]   --> src/interview/i09c_queue.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn delete_head(&mut self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/n1002common_chars.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `common_chars`
[INFO] [stdout]  --> src/n1002common_chars.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn common_chars(a: Vec<String>) -> Vec<String> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/n310find_min_height_trees.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `find_min_height_trees`
[INFO] [stdout]  --> src/n310find_min_height_trees.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn find_min_height_trees(n: i32, edges: Vec<Vec<i32>>) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/n392is_subsequence.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_subsequence`
[INFO] [stdout]  --> src/n392is_subsequence.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn is_subsequence(s: String, t: String) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `MinStack`
[INFO] [stdout]  --> src/n155min_stack.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct MinStack {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/n155min_stack.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/n155min_stack.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn push(&mut self, x: i32) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/n155min_stack.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn pop(&mut self) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `top`
[INFO] [stdout]   --> src/n155min_stack.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn top(&self) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_min`
[INFO] [stdout]   --> src/n155min_stack.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn get_min(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_min`
[INFO] [stdout]   --> src/n155min_stack.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn update_min(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `MyStack`
[INFO] [stdout]  --> src/n225my_stack.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct MyStack {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/n225my_stack.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/n225my_stack.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn push(&mut self, x: i32) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/n225my_stack.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn pop(&mut self) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `top`
[INFO] [stdout]   --> src/n225my_stack.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn top(&self) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `empty`
[INFO] [stdout]   --> src/n225my_stack.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn empty(&self) -> bool {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `MyQueue`
[INFO] [stdout]  --> src/n232my_queue.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct MyQueue {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/n232my_queue.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/n232my_queue.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn push(&mut self, x: i32) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/n232my_queue.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn pop(&mut self) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]   --> src/n232my_queue.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn peek(&self) -> i32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `empty`
[INFO] [stdout]   --> src/n232my_queue.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn empty(&self) -> bool {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `NumArray`
[INFO] [stdout]  --> src/n303num_array.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct NumArray {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/n303num_array.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn new(nums: Vec<i32>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sum_range`
[INFO] [stdout]   --> src/n303num_array.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn sum_range(&mut self, i: i32, j: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/n401read_binary_watch.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_binary_watch`
[INFO] [stdout]  --> src/n401read_binary_watch.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn read_binary_watch(num: i32) -> Vec<String> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `count_one`
[INFO] [stdout]   --> src/n401read_binary_watch.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn count_one(n: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `n191hammingWeight` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub mod n191hammingWeight;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `n191hamming_weight`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `prevMax` should have a snake case name
[INFO] [stdout]  --> src/n198rob.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let mut prevMax = 0;
[INFO] [stdout]   |                 ^^^^^^^ help: convert the identifier to snake case: `prev_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `currMax` should have a snake case name
[INFO] [stdout]  --> src/n198rob.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 |         let mut currMax = 0;
[INFO] [stdout]   |                 ^^^^^^^ help: convert the identifier to snake case: `curr_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `hammingWeight` should have a snake case name
[INFO] [stdout]  --> src/n191hammingWeight.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn hammingWeight (n: u32) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^ help: convert the identifier to snake case: `hamming_weight`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/interview/i11min_array.rs:33:41
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn in_order(v: &Vec<i32>, s: usize, e: usize) -> i32 {
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nums1`
[INFO] [stdout]  --> src/n004find_median_sorted_arrays.rs:4:38
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn find_median_sorted_arrays(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]   |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_nums1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nums2`
[INFO] [stdout]  --> src/n004find_median_sorted_arrays.rs:4:55
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn find_median_sorted_arrays(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]   |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_nums2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `re` is never read
[INFO] [stdout]  --> src/n035search_insert.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut re = 0;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]  --> src/n058length_of_last_word.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut res = 0;
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `i` is assigned to, but never used
[INFO] [stdout]  --> src/n058length_of_last_word.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut i = 0;
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_i` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]  --> src/n310find_min_height_trees.rs:4:34
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn find_min_height_trees(n: i32, edges: Vec<Vec<i32>>) -> Vec<i32> {
[INFO] [stdout]   |                                  ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `edges`
[INFO] [stdout]  --> src/n310find_min_height_trees.rs:4:42
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn find_min_height_trees(n: i32, edges: Vec<Vec<i32>>) -> Vec<i32> {
[INFO] [stdout]   |                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_edges`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]   --> src/n392is_subsequence.rs:13:22
[INFO] [stdout]    |
[INFO] [stdout] 13 |                 let (first, last) = t.split_at(ni as usize + 1);
[INFO] [stdout]    |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> src/n437path_sum.rs:19:21
[INFO] [stdout]    |
[INFO] [stdout] 19 |         if let Some(node) = root.clone() {
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `res` is never read
[INFO] [stdout]  --> src/n441arrange_coins.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let mut res = 0;
[INFO] [stdout]   |             ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 69 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::ListNode`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use leetcode_prelude::ListNode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::linkedlist`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use leetcode_prelude::linkedlist;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/n392is_subsequence.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let mut s = s;
[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 import: `leetcode_prelude::ListNode`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use leetcode_prelude::ListNode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `leetcode_prelude::linkedlist`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use leetcode_prelude::linkedlist;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/n876middle_node.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let mut head = linkedlist![1,2,3,4,5];
[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/n876middle_node.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let mut head = linkedlist![1,2,3,4,5,6];
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/n443compress.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | 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 is never used: `compress`
[INFO] [stdout]  --> src/n443compress.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn compress(chars: &mut Vec<char>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/n401read_binary_watch.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 | ...   let mut res = vec!["1:00".to_owned(), "2:00".to_owned(), "4:00".to_owned(), "8:00".to_owned(), "0:01".to_owned(), "0:02".to_owned()...
[INFO] [stdout]    |           ----^^^
[INFO] [stdout]    |           |
[INFO] [stdout]    |           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `i15`
[INFO] [stdout]   --> src/interview/i15hamming_weight.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn i15() {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/n310find_min_height_trees.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `find_min_height_trees`
[INFO] [stdout]  --> src/n310find_min_height_trees.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn find_min_height_trees(n: i32, edges: Vec<Vec<i32>>) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `n191hammingWeight` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub mod n191hammingWeight;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `n191hamming_weight`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `prevMax` should have a snake case name
[INFO] [stdout]  --> src/n198rob.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let mut prevMax = 0;
[INFO] [stdout]   |                 ^^^^^^^ help: convert the identifier to snake case: `prev_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `currMax` should have a snake case name
[INFO] [stdout]  --> src/n198rob.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 |         let mut currMax = 0;
[INFO] [stdout]   |                 ^^^^^^^ help: convert the identifier to snake case: `curr_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `hammingWeight` should have a snake case name
[INFO] [stdout]  --> src/n191hammingWeight.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn hammingWeight (n: u32) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^ help: convert the identifier to snake case: `hamming_weight`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.49s
[INFO] running `Command { std: "docker" "inspect" "7d6fee3b52f91c272b9dfdf3adc8cd391991163619b060df16bcab200259683e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d6fee3b52f91c272b9dfdf3adc8cd391991163619b060df16bcab200259683e", kill_on_drop: false }`
[INFO] [stdout] 7d6fee3b52f91c272b9dfdf3adc8cd391991163619b060df16bcab200259683e