[INFO] cloning repository https://github.com/ZhuJiaqi9905/leetcode_rust
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[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZhuJiaqi9905%2Fleetcode_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b57e67bb3cc34f2bbfc945eb428fa3f2e8be72c
[INFO] checking ZhuJiaqi9905/leetcode_rust against master#e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682 for beta-170-4
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[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ZhuJiaqi9905/leetcode_rust on toolchain e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ZhuJiaqi9905/leetcode_rust
[INFO] finished tweaking git repo https://github.com/ZhuJiaqi9905/leetcode_rust
[INFO] tweaked toml for git repo https://github.com/ZhuJiaqi9905/leetcode_rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ZhuJiaqi9905/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" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83ba64eceb5acb13f7396475ab7ca2ffea37ec808d193c3d9e192206ebc135f0
[INFO] running `Command { std: "docker" "start" "-a" "83ba64eceb5acb13f7396475ab7ca2ffea37ec808d193c3d9e192206ebc135f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83ba64eceb5acb13f7396475ab7ca2ffea37ec808d193c3d9e192206ebc135f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83ba64eceb5acb13f7396475ab7ca2ffea37ec808d193c3d9e192206ebc135f0", kill_on_drop: false }`
[INFO] [stdout] 83ba64eceb5acb13f7396475ab7ca2ffea37ec808d193c3d9e192206ebc135f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a42272443d2eb5319703e65d7389bfc6d43e4149edaf4169184b104361306f21
[INFO] running `Command { std: "docker" "start" "-a" "a42272443d2eb5319703e65d7389bfc6d43e4149edaf4169184b104361306f21", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> examples/23h_merge_k_sorted_lists.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> examples/23h_merge_k_sorted_lists.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]  --> examples/1261m_find_elements_in_a_contaminated_binary_tree.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{Ref, RefCell};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]  --> examples/1261m_find_elements_in_a_contaminated_binary_tree.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::hash::Hash;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> examples/1261m_find_elements_in_a_contaminated_binary_tree.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]  --> examples/1261m_find_elements_in_a_contaminated_binary_tree.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]  --> examples/865m_smallest_subtree_with_all_the_deepest_nodes.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{Ref, RefCell};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> examples/865m_smallest_subtree_with_all_the_deepest_nodes.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]  --> examples/865m_smallest_subtree_with_all_the_deepest_nodes.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::hash::Hash;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> examples/865m_smallest_subtree_with_all_the_deepest_nodes.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]  --> examples/865m_smallest_subtree_with_all_the_deepest_nodes.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> examples/109m_convert_sorted_list_to_binary_search_tree.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stdout]  --> examples/109m_convert_sorted_list_to_binary_search_tree.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::BinaryHeap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> examples/109m_convert_sorted_list_to_binary_search_tree.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FindElements` is never constructed
[INFO] [stdout]   --> examples/1261m_find_elements_in_a_contaminated_binary_tree.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct FindElements {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `dfs`, and `find` are never used
[INFO] [stdout]   --> examples/1261m_find_elements_in_a_contaminated_binary_tree.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl FindElements {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 33 |     fn new(root: Option<Rc<RefCell<TreeNode>>>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn dfs(root: Rc<RefCell<TreeNode>>, value: i32, values: &mut HashSet<i32>) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     fn find(&self, target: i32) -> bool {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> examples/23h_merge_k_sorted_lists.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 13 |     #[inline]
[INFO] [stdout] 14 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `merge_k_lists` is never used
[INFO] [stdout]   --> examples/23h_merge_k_sorted_lists.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 30 |     pub fn merge_k_lists(lists: Vec<Option<Box<ListNode>>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> examples/23h_merge_k_sorted_lists.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> examples/19m_remove_Nth_node_from_end_of_list.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> examples/19m_remove_Nth_node_from_end_of_list.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ans` is never constructed
[INFO] [stdout]   --> examples/865m_smallest_subtree_with_all_the_deepest_nodes.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Ans {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> examples/865m_smallest_subtree_with_all_the_deepest_nodes.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Ans {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn new(node: Option<Rc<RefCell<TreeNode>>>, depth: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `subtree_with_all_deepest` and `max_depth` are never used
[INFO] [stdout]   --> examples/865m_smallest_subtree_with_all_the_deepest_nodes.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 34 |     pub fn subtree_with_all_deepest(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn max_depth(root: Option<Rc<RefCell<TreeNode>>>) -> Ans {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> examples/865m_smallest_subtree_with_all_the_deepest_nodes.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/19m_remove_Nth_node_from_end_of_list.rs:17:32
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn remove_nth_from_end(mut head: Option<Box<ListNode>>, n: i32) -> Option<Box<ListNode>> {
[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: associated function `new` is never used
[INFO] [stdout]   --> examples/19m_remove_Nth_node_from_end_of_list.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 11 |     #[inline]
[INFO] [stdout] 12 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `remove_nth_from_end` is never used
[INFO] [stdout]   --> examples/19m_remove_Nth_node_from_end_of_list.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 17 |     pub fn remove_nth_from_end(mut head: Option<Box<ListNode>>, n: i32) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> examples/19m_remove_Nth_node_from_end_of_list.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/109m_convert_sorted_list_to_binary_search_tree.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |         mut cur: &mut Option<Box<ListNode>>, // 用cur指向当前的mid节点
[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: crate `19m_remove_Nth_node_from_end_of_list` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `19m_remove_nth_node_from_end_of_list`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/109m_convert_sorted_list_to_binary_search_tree.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let mut n1 = Box::new(ListNode::new(9));
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> examples/35e_search_insert_position.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> examples/35e_search_insert_position.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> examples/35e_search_insert_position.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stdout]  --> examples/35e_search_insert_position.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::BinaryHeap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> examples/35e_search_insert_position.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> examples/35e_search_insert_position.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `883e_projection_area_of_3D_shapes` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `883e_projection_area_of_3_d_shapes`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `search_insert` and `left_bound` are never used
[INFO] [stdout]   --> examples/35e_search_insert_position.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 9  |     pub fn search_insert(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn left_bound(nums: &[i32], target: i32) -> 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]   --> examples/35e_search_insert_position.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]  --> examples/653e_two_sum_IV_input_is_a_bst.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{Ref, RefCell};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> examples/653e_two_sum_IV_input_is_a_bst.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> examples/653e_two_sum_IV_input_is_a_bst.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `is_balanced` and `depth` are never used
[INFO] [stdout]   --> examples/110e_balanced_binary_tree.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 22 |     pub fn is_balanced(root: Option<Rc<RefCell<TreeNode>>>) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn depth(root: Option<Rc<RefCell<TreeNode>>>, is_balance: &mut bool) -> 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]   --> examples/110e_balanced_binary_tree.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `find_target` and `dfs` are never used
[INFO] [stdout]   --> examples/653e_two_sum_IV_input_is_a_bst.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 23 |     pub fn find_target(root: Option<Rc<RefCell<TreeNode>>>, k: i32) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn dfs(root: Option<Rc<RefCell<TreeNode>>>, ans: &mut 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]   --> examples/653e_two_sum_IV_input_is_a_bst.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `653e_two_sum_IV_input_is_a_bst` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `653e_two_sum_iv_input_is_a_bst`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]  --> examples/236m_lowest_common_ancestor_of_a_binary_tree.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{Ref, RefCell};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> examples/236m_lowest_common_ancestor_of_a_binary_tree.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]  --> examples/236m_lowest_common_ancestor_of_a_binary_tree.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::hash::Hash;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> examples/236m_lowest_common_ancestor_of_a_binary_tree.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]  --> examples/236m_lowest_common_ancestor_of_a_binary_tree.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]  --> examples/94e_binary_tree_inorder_traversal.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{Ref, RefCell};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> examples/94e_binary_tree_inorder_traversal.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> examples/94e_binary_tree_inorder_traversal.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]  --> examples/988m_smallest_string_starting_from_leaf.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{Ref, RefCell};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> examples/988m_smallest_string_starting_from_leaf.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> examples/988m_smallest_string_starting_from_leaf.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `inorder_traversal` and `dfs` are never used
[INFO] [stdout]   --> examples/94e_binary_tree_inorder_traversal.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 23 |     pub fn inorder_traversal(root: Option<Rc<RefCell<TreeNode>>>) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn dfs(root: Option<Rc<RefCell<TreeNode>>>, ans: &mut Vec<i32>) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `lowest_common_ancestor` is never used
[INFO] [stdout]   --> examples/236m_lowest_common_ancestor_of_a_binary_tree.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 25 |     pub fn lowest_common_ancestor(
[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]   --> examples/236m_lowest_common_ancestor_of_a_binary_tree.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> examples/94e_binary_tree_inorder_traversal.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `smallest_from_leaf` and `dfs` are never used
[INFO] [stdout]   --> examples/988m_smallest_string_starting_from_leaf.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 25 |     pub fn smallest_from_leaf(root: Option<Rc<RefCell<TreeNode>>>) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn dfs(root: Option<Rc<RefCell<TreeNode>>>, tmp_str: &mut Vec<u8>, ans: &mut String) {
[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]   --> examples/988m_smallest_string_starting_from_leaf.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]  --> examples/1110m_delete_nodes_and_return_forest.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{Ref, RefCell};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `flatten` is never used
[INFO] [stdout]   --> examples/114m_flatten_binary_tree_to_linked_list.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 22 |     pub fn flatten(root: &mut Option<Rc<RefCell<TreeNode>>>) {
[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]   --> examples/114m_flatten_binary_tree_to_linked_list.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `del_nodes` and `dfs` are never used
[INFO] [stdout]   --> examples/1110m_delete_nodes_and_return_forest.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 25 |     pub fn del_nodes(
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn dfs(
[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]   --> examples/1110m_delete_nodes_and_return_forest.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> examples/43m_find_first_and_last_position_of_element_in_sorted_array.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> examples/43m_find_first_and_last_position_of_element_in_sorted_array.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> examples/43m_find_first_and_last_position_of_element_in_sorted_array.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stdout]  --> examples/43m_find_first_and_last_position_of_element_in_sorted_array.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::BinaryHeap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> examples/43m_find_first_and_last_position_of_element_in_sorted_array.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> examples/43m_find_first_and_last_position_of_element_in_sorted_array.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `search_range`, `left_bound`, and `right_bound` are never used
[INFO] [stdout]   --> examples/43m_find_first_and_last_position_of_element_in_sorted_array.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 9  |     pub fn search_range(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn left_bound(nums: &[i32], target: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn right_bound(nums: &[i32], target: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/1373h_maximum_sum_BST_in_binary_tree.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let mut node3 = TreeNode::new(-5);
[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 `Solution` is never constructed
[INFO] [stdout]   --> examples/43m_find_first_and_last_position_of_element_in_sorted_array.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `max_product` and `get_sum` are never used
[INFO] [stdout]   --> examples/1339m_maximum_product_of_splitted_binary_tree.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 22 |     pub fn max_product(root: Option<Rc<RefCell<TreeNode>>>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn get_sum(root: Option<Rc<RefCell<TreeNode>>>, tree_sum: i32, max_product: &mut i64) -> 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]   --> examples/1339m_maximum_product_of_splitted_binary_tree.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `1373h_maximum_sum_BST_in_binary_tree` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `1373h_maximum_sum_bst_in_binary_tree`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid character `' '` in crate name: `341m_ flatten_nested_list_iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `leetcode` (example "341m_ flatten_nested_list_iterator") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]  --> examples/112e_path_sum.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{Ref, RefCell};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> examples/112e_path_sum.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> examples/112e_path_sum.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> examples/704e_binary_search.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> examples/704e_binary_search.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> examples/704e_binary_search.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stdout]  --> examples/704e_binary_search.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::BinaryHeap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> examples/704e_binary_search.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> examples/704e_binary_search.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> examples/876e_middle_of_the_linked_list.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> examples/876e_middle_of_the_linked_list.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> examples/876e_middle_of_the_linked_list.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `piles`
[INFO] [stdout]  --> examples/877m_stone_game.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn stone_game(piles: Vec<i32>) -> bool {
[INFO] [stdout]   |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_piles`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `stone_game` is never used
[INFO] [stdout]  --> examples/877m_stone_game.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 2 |     pub fn stone_game(piles: Vec<i32>) -> bool {
[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]  --> examples/877m_stone_game.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `has_path_sum` and `dfs` are never used
[INFO] [stdout]   --> examples/112e_path_sum.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 23 |     pub fn has_path_sum(root: Option<Rc<RefCell<TreeNode>>>, target_sum: i32) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn dfs(root: Rc<RefCell<TreeNode>>, target_sum: i32, mut sum: i32, ans: &mut bool) {
[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]   --> examples/112e_path_sum.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `search` is never used
[INFO] [stdout]   --> examples/704e_binary_search.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn search(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> examples/704e_binary_search.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> examples/876e_middle_of_the_linked_list.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 11 |     #[inline]
[INFO] [stdout] 12 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `middle_node` is never used
[INFO] [stdout]   --> examples/876e_middle_of_the_linked_list.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 17 |     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]   --> examples/876e_middle_of_the_linked_list.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a42272443d2eb5319703e65d7389bfc6d43e4149edaf4169184b104361306f21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a42272443d2eb5319703e65d7389bfc6d43e4149edaf4169184b104361306f21", kill_on_drop: false }`
[INFO] [stdout] a42272443d2eb5319703e65d7389bfc6d43e4149edaf4169184b104361306f21
