[INFO] cloning repository https://github.com/Kilerd/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/Kilerd/leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKilerd%2Fleetcode-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKilerd%2Fleetcode-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 187ad50d630af17e7fa02bc075d8f94e67710f15
[INFO] testing Kilerd/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%2FKilerd%2Fleetcode-rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Kilerd/leetcode-rust
[INFO] finished tweaking git repo https://github.com/Kilerd/leetcode-rust
[INFO] tweaked toml for git repo https://github.com/Kilerd/leetcode-rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Kilerd/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/Kilerd/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 }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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_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" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1efa635709357eba78f8972d786a8379d8806f498d3af3c4535d74822ab3277c
[INFO] running `Command { std: "docker" "start" "-a" "1efa635709357eba78f8972d786a8379d8806f498d3af3c4535d74822ab3277c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1efa635709357eba78f8972d786a8379d8806f498d3af3c4535d74822ab3277c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1efa635709357eba78f8972d786a8379d8806f498d3af3c4535d74822ab3277c", kill_on_drop: false }`
[INFO] [stdout] 1efa635709357eba78f8972d786a8379d8806f498d3af3c4535d74822ab3277c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c049f8ed5b56dc5867b07dd3f2fd571b6de47e0171e7995ab533736772538af
[INFO] running `Command { std: "docker" "start" "-a" "5c049f8ed5b56dc5867b07dd3f2fd571b6de47e0171e7995ab533736772538af", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]   --> src/maximum_depth_of_binary_tree.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | use std::cmp::max;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/apply_discount_every_n_orders.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ShlAssign`, `Shl`, and `Shr`
[INFO] [stdout]  --> src/convert_a_number_to_hexadecimal.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Shl, ShlAssign, Shr};
[INFO] [stdout]   |                ^^^  ^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hint::unreachable_unchecked`
[INFO] [stdout]  --> src/convert_a_number_to_hexadecimal.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::hint::unreachable_unchecked;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/container_with_most_water.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         /// two pointer solution
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 23 |
[INFO] [stdout] 24 |         let mut start = 0usize;
[INFO] [stdout]    |         ----------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:15:21
[INFO] [stdout]    |
[INFO] [stdout] 15 |                 1000...std::i32::MAX => ("M", 1000),
[INFO] [stdout]    |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:16:20
[INFO] [stdout]    |
[INFO] [stdout] 16 |                 900...1000 => ("CM", 900),
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |                 500...900 => ("D", 500),
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:18:20
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 400...500 => ("CD", 400),
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:19:20
[INFO] [stdout]    |
[INFO] [stdout] 19 |                 100...400 => ("C", 100),
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:20:19
[INFO] [stdout]    |
[INFO] [stdout] 20 |                 90...100 => ("XC", 90),
[INFO] [stdout]    |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:21:19
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 50...90 => ("L", 50),
[INFO] [stdout]    |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:22:19
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 40...50 => ("XL", 40),
[INFO] [stdout]    |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:23:19
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 10...40 => ("X", 10),
[INFO] [stdout]    |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:25:18
[INFO] [stdout]    |
[INFO] [stdout] 25 |                 5...9 => ("V", 5),
[INFO] [stdout]    |                  ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:27:18
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 1...4 => ("I", 1),
[INFO] [stdout]    |                  ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/nim_game.rs:11:14
[INFO] [stdout]    |
[INFO] [stdout] 11 |             1...3 => true,
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::i32`
[INFO] [stdout]   --> src/reverse_integer.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         use std::i32;
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::min`
[INFO] [stdout]   --> src/three_sum_closest.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |         use std::cmp::min;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/convert_a_number_to_hexadecimal.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |         for i in 0..8 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 40...50 => ("XL", 40),
[INFO] [stdout]    |                 ------- this range overlaps on `40_i32`...
[INFO] [stdout] 23 |                 10...40 => ("X", 10),
[INFO] [stdout]    |                 ^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout]    = note: `#[warn(overlapping_range_endpoints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 50...90 => ("L", 50),
[INFO] [stdout]    |                 ------- this range overlaps on `50_i32`...
[INFO] [stdout] 22 |                 40...50 => ("XL", 40),
[INFO] [stdout]    |                 ^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |                 90...100 => ("XC", 90),
[INFO] [stdout]    |                 -------- this range overlaps on `90_i32`...
[INFO] [stdout] 21 |                 50...90 => ("L", 50),
[INFO] [stdout]    |                 ^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |                 100...400 => ("C", 100),
[INFO] [stdout]    |                 --------- this range overlaps on `100_i32`...
[INFO] [stdout] 20 |                 90...100 => ("XC", 90),
[INFO] [stdout]    |                 ^^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 400...500 => ("CD", 400),
[INFO] [stdout]    |                 --------- this range overlaps on `400_i32`...
[INFO] [stdout] 19 |                 100...400 => ("C", 100),
[INFO] [stdout]    |                 ^^^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 17 |                 500...900 => ("D", 500),
[INFO] [stdout]    |                 --------- this range overlaps on `500_i32`...
[INFO] [stdout] 18 |                 400...500 => ("CD", 400),
[INFO] [stdout]    |                 ^^^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |                 900...1000 => ("CM", 900),
[INFO] [stdout]    |                 ---------- this range overlaps on `900_i32`...
[INFO] [stdout] 17 |                 500...900 => ("D", 500),
[INFO] [stdout]    |                 ^^^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 15 |                 1000...std::i32::MAX => ("M", 1000),
[INFO] [stdout]    |                 -------------------- this range overlaps on `1000_i32`...
[INFO] [stdout] 16 |                 900...1000 => ("CM", 900),
[INFO] [stdout]    |                 ^^^^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/combination_sum.rs:16:25
[INFO] [stdout]    |
[INFO] [stdout] 16 |                     let mut vec1 = Solution::combination_sum(candidates.clone(), target - *x);
[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]   --> src/binary_tree_level_order_traversal.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/binary_tree_level_order_traversal.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/binary_tree_level_order_traversal.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 43 |     #[inline]
[INFO] [stdout] 44 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `level_order` is never used
[INFO] [stdout]   --> src/binary_tree_level_order_traversal.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 58 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 59 |     pub fn level_order(root: Option<Rc<RefCell<TreeNode>>>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/maximum_depth_of_binary_tree.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/maximum_depth_of_binary_tree.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/maximum_depth_of_binary_tree.rs:43:10
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 42 |   #[inline]
[INFO] [stdout] 43 |   pub fn new(val: i32) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `max_depth` is never used
[INFO] [stdout]   --> src/maximum_depth_of_binary_tree.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 54 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 55 |     pub fn max_depth(root: Option<Rc<RefCell<TreeNode>>>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/invert_binary_tree.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/invert_binary_tree.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/invert_binary_tree.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 47 |     #[inline]
[INFO] [stdout] 48 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `invert_tree` is never used
[INFO] [stdout]   --> src/invert_binary_tree.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 63 |     pub fn invert_tree(root: Option<Rc<RefCell<TreeNode>>>) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/same_tree.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/same_tree.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/same_tree.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 59 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 60 |   #[inline]
[INFO] [stdout] 61 |   pub fn new(val: i32) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `is_same_tree` is never used
[INFO] [stdout]   --> src/same_tree.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 74 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 75 |     pub fn is_same_tree(p: Option<Rc<RefCell<TreeNode>>>, q: Option<Rc<RefCell<TreeNode>>>) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cashier` is never constructed
[INFO] [stdout]   --> src/apply_discount_every_n_orders.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | struct Cashier {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `get_bill` are never used
[INFO] [stdout]    --> src/apply_discount_every_n_orders.rs:92:8
[INFO] [stdout]     |
[INFO] [stdout]  91 | impl Cashier {
[INFO] [stdout]     | ------------ associated items in this implementation
[INFO] [stdout]  92 |     fn new(n: i32, discount: i32, products: Vec<i32>, prices: Vec<i32>) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     fn get_bill(&mut self, product: Vec<i32>, amount: Vec<i32>) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/convert_a_number_to_hexadecimal.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `to_hex` is never used
[INFO] [stdout]   --> src/convert_a_number_to_hexadecimal.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 52 |     pub fn to_hex(num: i32) -> String {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/permutations.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `permute` is never used
[INFO] [stdout]   --> src/permutations.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 30 |     pub fn permute(nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/add_two_number.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `add_two_numbers` is never used
[INFO] [stdout]   --> src/add_two_number.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn add_two_numbers(l1: Option<Box<ListNode>>, l2: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/array_partition_i.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `array_pair_sum` is never used
[INFO] [stdout]  --> src/array_partition_i.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn array_pair_sum(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/big_countries.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/big_countries.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/container_with_most_water.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `max_area` is never used
[INFO] [stdout]   --> src/container_with_most_water.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn max_area(height: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/di_string_match.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `di_string_match` is never used
[INFO] [stdout]   --> src/di_string_match.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn di_string_match(s: String) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/divide_two_integers.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `divide` is never used
[INFO] [stdout]  --> src/divide_two_integers.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn divide(dividend: i32, divisor: i32) -> i32 {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/flipping_an_image.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `flip_and_invert_image` is never used
[INFO] [stdout]  --> src/flipping_an_image.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn flip_and_invert_image(a: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/generate_parentheses.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `generate_parenthesis` is never used
[INFO] [stdout]  --> src/generate_parentheses.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn generate_parenthesis(n: i32) -> Vec<String> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/hamming_distance.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `hamming_distance` is never used
[INFO] [stdout]   --> src/hamming_distance.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn hamming_distance(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/implement_strstr.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `str_str` is never used
[INFO] [stdout]   --> src/implement_strstr.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn str_str(haystack: String, needle: String) -> i32 {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/integer_to_roman.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `int_to_roman` is never used
[INFO] [stdout]   --> src/integer_to_roman.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn int_to_roman(num: i32) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/jewels_and_stones.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Solution();
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `num_jewels_in_stones` is never used
[INFO] [stdout]  --> src/jewels_and_stones.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn num_jewels_in_stones(j: String, s: String) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/letter_combinations_of_a_phone_number.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `letter_combinations` is never used
[INFO] [stdout]   --> src/letter_combinations_of_a_phone_number.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn letter_combinations(digits: String) -> Vec<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ListNode` is never constructed
[INFO] [stdout]  --> src/list.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct ListNode {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `build_from_vec` are never used
[INFO] [stdout]   --> src/list.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl ListNode {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  8 |     #[inline]
[INFO] [stdout]  9 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn build_from_vec(vec: Vec<i32>)-> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/longest_substring_without_repeating_characters.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `length_of_longest_substring` is never used
[INFO] [stdout]   --> src/longest_substring_without_repeating_characters.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]  --> src/merge_two_binary_trees.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct TreeNode {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/merge_two_binary_trees.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 16 |     #[inline]
[INFO] [stdout] 17 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/merge_two_binary_trees.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `merge_trees` is never used
[INFO] [stdout]   --> src/merge_two_binary_trees.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 32 |     pub fn merge_trees(
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/nim_game.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Solution();
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `can_win_nim` is never used
[INFO] [stdout]  --> src/nim_game.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn can_win_nim(n: i32) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RecentCounter` is never constructed
[INFO] [stdout]  --> src/number_of_recent_calls.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct RecentCounter {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `ping` are never used
[INFO] [stdout]   --> src/number_of_recent_calls.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl RecentCounter {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 12 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn ping(&mut self, t: i32) -> i32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/palindrome_number.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `is_palindrome` is never used
[INFO] [stdout]   --> src/palindrome_number.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn is_palindrome(x: i32) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/peak_index_in_a_mountain_array.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `peak_index_in_mountain_array` is never used
[INFO] [stdout]   --> src/peak_index_in_a_mountain_array.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn peak_index_in_mountain_array(a: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/remove_duplicates_from_sorted_array.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `remove_duplicates` is never used
[INFO] [stdout]   --> src/remove_duplicates_from_sorted_array.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn remove_duplicates(nums: &mut Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/remove_element.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `remove_element` is never used
[INFO] [stdout]   --> src/remove_element.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn remove_element(nums: &mut Vec<i32>, val: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/reverse_integer.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `reverse` is never used
[INFO] [stdout]   --> src/reverse_integer.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn reverse(x: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/robot_return_to_origin.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `judge_circle` is never used
[INFO] [stdout]  --> src/robot_return_to_origin.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn judge_circle(moves: String) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/search_in_rotated_sorted_array.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `rotated_index` and `search` are never used
[INFO] [stdout]   --> src/search_in_rotated_sorted_array.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  9 |     pub fn rotated_index(nums: &Vec<i32>, start: usize, end: usize) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn search(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/self_dividing_numbers.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `self_dividing_numbers` is never used
[INFO] [stdout]   --> src/self_dividing_numbers.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn self_dividing_numbers(left: i32, right: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/sort_array_by_parity.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `self_dividing_numbers` is never used
[INFO] [stdout]   --> src/sort_array_by_parity.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn self_dividing_numbers(left: i32, right: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/sort_array_by_parity_ii.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `sort_array_by_parity_ii` is never used
[INFO] [stdout]   --> src/sort_array_by_parity_ii.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn sort_array_by_parity_ii(a: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/sort_colors.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `sort_colors` is never used
[INFO] [stdout]   --> src/sort_colors.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     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/string_to_integer_atoi.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `my_atoi` is never used
[INFO] [stdout]   --> src/string_to_integer_atoi.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn my_atoi(str_: String) -> i32 {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/sudoku_solver.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `solve_sudoku` and `invalid` are never used
[INFO] [stdout]   --> src/sudoku_solver.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  9 |     pub fn solve_sudoku(board: &mut Vec<Vec<char>>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn invalid(board: &Vec<Vec<char>>, x: usize, y: usize) -> bool {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/three_sum.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `three_sum` is never used
[INFO] [stdout]   --> src/three_sum.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     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/three_sum_closest.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `three_sum_closest` is never used
[INFO] [stdout]   --> src/three_sum_closest.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn three_sum_closest(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/to_lower_case.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution();
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `to_lower_case` is never used
[INFO] [stdout]   --> src/to_lower_case.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn to_lower_case(str: String) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/two_sum.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `two_sum` is never used
[INFO] [stdout]   --> src/two_sum.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     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/unique_email_addresses.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution();
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `num_unique_emails` is never used
[INFO] [stdout]   --> src/unique_email_addresses.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn num_unique_emails(emails: Vec<String>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/unique_morse_code_words.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution();
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `unique_morse_representations` is never used
[INFO] [stdout]   --> src/unique_morse_code_words.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn unique_morse_representations(words: Vec<String>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/valid_parentheses.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `is_valid` is never used
[INFO] [stdout]   --> src/valid_parentheses.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn is_valid(s: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/valid_sudoku.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `is_valid_sudoku` is never used
[INFO] [stdout]  --> src/valid_sudoku.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn is_valid_sudoku(board: Vec<Vec<char>>) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/zigzag_conversion.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `convert` is never used
[INFO] [stdout]   --> src/zigzag_conversion.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |
[INFO] [stdout] 11 |     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/combination_sum.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `combination_sum` is never used
[INFO] [stdout]   --> src/combination_sum.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn combination_sum(candidates: Vec<i32>, target: i32) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/letter_combinations_of_a_phone_number.rs:43:58
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     ret.push(format!("{}{}", x.clone(), y.clone()));
[INFO] [stdout]    |                                                          ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/sort_colors.rs:19:28
[INFO] [stdout]    |
[INFO] [stdout] 19 |             let value = if 0 <= i && i < counts[0] {
[INFO] [stdout]    |                            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "5c049f8ed5b56dc5867b07dd3f2fd571b6de47e0171e7995ab533736772538af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c049f8ed5b56dc5867b07dd3f2fd571b6de47e0171e7995ab533736772538af", kill_on_drop: false }`
[INFO] [stdout] 5c049f8ed5b56dc5867b07dd3f2fd571b6de47e0171e7995ab533736772538af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 7b9d8923a152fcfb2f4c57e645c24e2c89244cb4ae815dc53e85486aff3a2862
[INFO] running `Command { std: "docker" "start" "-a" "7b9d8923a152fcfb2f4c57e645c24e2c89244cb4ae815dc53e85486aff3a2862", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]   --> src/maximum_depth_of_binary_tree.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | use std::cmp::max;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/apply_discount_every_n_orders.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ShlAssign`, `Shl`, and `Shr`
[INFO] [stdout]  --> src/convert_a_number_to_hexadecimal.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Shl, ShlAssign, Shr};
[INFO] [stdout]   |                ^^^  ^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hint::unreachable_unchecked`
[INFO] [stdout]  --> src/convert_a_number_to_hexadecimal.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::hint::unreachable_unchecked;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/container_with_most_water.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         /// two pointer solution
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 23 |
[INFO] [stdout] 24 |         let mut start = 0usize;
[INFO] [stdout]    |         ----------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:15:21
[INFO] [stdout]    |
[INFO] [stdout] 15 |                 1000...std::i32::MAX => ("M", 1000),
[INFO] [stdout]    |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:16:20
[INFO] [stdout]    |
[INFO] [stdout] 16 |                 900...1000 => ("CM", 900),
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |                 500...900 => ("D", 500),
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:18:20
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 400...500 => ("CD", 400),
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:19:20
[INFO] [stdout]    |
[INFO] [stdout] 19 |                 100...400 => ("C", 100),
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:20:19
[INFO] [stdout]    |
[INFO] [stdout] 20 |                 90...100 => ("XC", 90),
[INFO] [stdout]    |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:21:19
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 50...90 => ("L", 50),
[INFO] [stdout]    |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:22:19
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 40...50 => ("XL", 40),
[INFO] [stdout]    |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:23:19
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 10...40 => ("X", 10),
[INFO] [stdout]    |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:25:18
[INFO] [stdout]    |
[INFO] [stdout] 25 |                 5...9 => ("V", 5),
[INFO] [stdout]    |                  ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/integer_to_roman.rs:27:18
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 1...4 => ("I", 1),
[INFO] [stdout]    |                  ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/nim_game.rs:11:14
[INFO] [stdout]    |
[INFO] [stdout] 11 |             1...3 => true,
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::i32`
[INFO] [stdout]   --> src/reverse_integer.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         use std::i32;
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::min`
[INFO] [stdout]   --> src/three_sum_closest.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |         use std::cmp::min;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/convert_a_number_to_hexadecimal.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |         for i in 0..8 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 40...50 => ("XL", 40),
[INFO] [stdout]    |                 ------- this range overlaps on `40_i32`...
[INFO] [stdout] 23 |                 10...40 => ("X", 10),
[INFO] [stdout]    |                 ^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout]    = note: `#[warn(overlapping_range_endpoints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 50...90 => ("L", 50),
[INFO] [stdout]    |                 ------- this range overlaps on `50_i32`...
[INFO] [stdout] 22 |                 40...50 => ("XL", 40),
[INFO] [stdout]    |                 ^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |                 90...100 => ("XC", 90),
[INFO] [stdout]    |                 -------- this range overlaps on `90_i32`...
[INFO] [stdout] 21 |                 50...90 => ("L", 50),
[INFO] [stdout]    |                 ^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |                 100...400 => ("C", 100),
[INFO] [stdout]    |                 --------- this range overlaps on `100_i32`...
[INFO] [stdout] 20 |                 90...100 => ("XC", 90),
[INFO] [stdout]    |                 ^^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 400...500 => ("CD", 400),
[INFO] [stdout]    |                 --------- this range overlaps on `400_i32`...
[INFO] [stdout] 19 |                 100...400 => ("C", 100),
[INFO] [stdout]    |                 ^^^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 17 |                 500...900 => ("D", 500),
[INFO] [stdout]    |                 --------- this range overlaps on `500_i32`...
[INFO] [stdout] 18 |                 400...500 => ("CD", 400),
[INFO] [stdout]    |                 ^^^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |                 900...1000 => ("CM", 900),
[INFO] [stdout]    |                 ---------- this range overlaps on `900_i32`...
[INFO] [stdout] 17 |                 500...900 => ("D", 500),
[INFO] [stdout]    |                 ^^^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]   --> src/integer_to_roman.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 15 |                 1000...std::i32::MAX => ("M", 1000),
[INFO] [stdout]    |                 -------------------- this range overlaps on `1000_i32`...
[INFO] [stdout] 16 |                 900...1000 => ("CM", 900),
[INFO] [stdout]    |                 ^^^^^^^^^^ ... with this range
[INFO] [stdout]    |
[INFO] [stdout]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sudoku_solver.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |         let mut expected_solution = 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: variable does not need to be mutable
[INFO] [stdout]    --> src/sudoku_solver.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let mut expected_solution = vec![
[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/combination_sum.rs:16:25
[INFO] [stdout]    |
[INFO] [stdout] 16 |                     let mut vec1 = Solution::combination_sum(candidates.clone(), target - *x);
[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/invert_binary_tree.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/invert_binary_tree.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/invert_binary_tree.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 47 |     #[inline]
[INFO] [stdout] 48 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `invert_tree` is never used
[INFO] [stdout]   --> src/invert_binary_tree.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 63 |     pub fn invert_tree(root: Option<Rc<RefCell<TreeNode>>>) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/big_countries.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/big_countries.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/list.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl ListNode {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 8 |     #[inline]
[INFO] [stdout] 9 |     fn new(val: i32) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]  --> src/merge_two_binary_trees.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct TreeNode {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/merge_two_binary_trees.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 16 |     #[inline]
[INFO] [stdout] 17 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/merge_two_binary_trees.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `merge_trees` is never used
[INFO] [stdout]   --> src/merge_two_binary_trees.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 32 |     pub fn merge_trees(
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RecentCounter` is never constructed
[INFO] [stdout]  --> src/number_of_recent_calls.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct RecentCounter {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `ping` are never used
[INFO] [stdout]   --> src/number_of_recent_calls.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl RecentCounter {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 12 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn ping(&mut self, t: i32) -> i32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/letter_combinations_of_a_phone_number.rs:43:58
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     ret.push(format!("{}{}", x.clone(), y.clone()));
[INFO] [stdout]    |                                                          ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/sort_colors.rs:19:28
[INFO] [stdout]    |
[INFO] [stdout] 19 |             let value = if 0 <= i && i < counts[0] {
[INFO] [stdout]    |                            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.61s
[INFO] running `Command { std: "docker" "inspect" "7b9d8923a152fcfb2f4c57e645c24e2c89244cb4ae815dc53e85486aff3a2862", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b9d8923a152fcfb2f4c57e645c24e2c89244cb4ae815dc53e85486aff3a2862", kill_on_drop: false }`
[INFO] [stdout] 7b9d8923a152fcfb2f4c57e645c24e2c89244cb4ae815dc53e85486aff3a2862
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 7e699585bf77273a84efdc82161f1438de02be51195502d52babe0672561bbf5
[INFO] running `Command { std: "docker" "start" "-a" "7e699585bf77273a84efdc82161f1438de02be51195502d52babe0672561bbf5", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::cmp::max`
[INFO] [stderr]   --> src/maximum_depth_of_binary_tree.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 | use std::cmp::max;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/apply_discount_every_n_orders.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ShlAssign`, `Shl`, and `Shr`
[INFO] [stderr]  --> src/convert_a_number_to_hexadecimal.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops::{Shl, ShlAssign, Shr};
[INFO] [stderr]   |                ^^^  ^^^^^^^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::hint::unreachable_unchecked`
[INFO] [stderr]  --> src/convert_a_number_to_hexadecimal.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::hint::unreachable_unchecked;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/container_with_most_water.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         /// two pointer solution
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 23 |
[INFO] [stderr] 24 |         let mut start = 0usize;
[INFO] [stderr]    |         ----------------------- rustdoc does not generate documentation for statements
[INFO] [stderr]    |
[INFO] [stderr]    = help: use `//` for a plain comment
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/integer_to_roman.rs:15:21
[INFO] [stderr]    |
[INFO] [stderr] 15 |                 1000...std::i32::MAX => ("M", 1000),
[INFO] [stderr]    |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/integer_to_roman.rs:16:20
[INFO] [stderr]    |
[INFO] [stderr] 16 |                 900...1000 => ("CM", 900),
[INFO] [stderr]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/integer_to_roman.rs:17:20
[INFO] [stderr]    |
[INFO] [stderr] 17 |                 500...900 => ("D", 500),
[INFO] [stderr]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/integer_to_roman.rs:18:20
[INFO] [stderr]    |
[INFO] [stderr] 18 |                 400...500 => ("CD", 400),
[INFO] [stderr]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/integer_to_roman.rs:19:20
[INFO] [stderr]    |
[INFO] [stderr] 19 |                 100...400 => ("C", 100),
[INFO] [stderr]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/integer_to_roman.rs:20:19
[INFO] [stderr]    |
[INFO] [stderr] 20 |                 90...100 => ("XC", 90),
[INFO] [stderr]    |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/integer_to_roman.rs:21:19
[INFO] [stderr]    |
[INFO] [stderr] 21 |                 50...90 => ("L", 50),
[INFO] [stderr]    |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/integer_to_roman.rs:22:19
[INFO] [stderr]    |
[INFO] [stderr] 22 |                 40...50 => ("XL", 40),
[INFO] [stderr]    |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/integer_to_roman.rs:23:19
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 10...40 => ("X", 10),
[INFO] [stderr]    |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/integer_to_roman.rs:25:18
[INFO] [stderr]    |
[INFO] [stderr] 25 |                 5...9 => ("V", 5),
[INFO] [stderr]    |                  ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/integer_to_roman.rs:27:18
[INFO] [stderr]    |
[INFO] [stderr] 27 |                 1...4 => ("I", 1),
[INFO] [stderr]    |                  ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/nim_game.rs:11:14
[INFO] [stderr]    |
[INFO] [stderr] 11 |             1...3 => true,
[INFO] [stderr]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::i32`
[INFO] [stderr]   --> src/reverse_integer.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |         use std::i32;
[INFO] [stderr]    |             ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::min`
[INFO] [stderr]   --> src/three_sum_closest.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |         use std::cmp::min;
[INFO] [stderr]    |             ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/convert_a_number_to_hexadecimal.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |         for i in 0..8 {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: multiple patterns overlap on their endpoints
[INFO] [stderr]   --> src/integer_to_roman.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 22 |                 40...50 => ("XL", 40),
[INFO] [stderr]    |                 ------- this range overlaps on `40_i32`...
[INFO] [stderr] 23 |                 10...40 => ("X", 10),
[INFO] [stderr]    |                 ^^^^^^^ ... with this range
[INFO] [stderr]    |
[INFO] [stderr]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stderr]    = note: `#[warn(overlapping_range_endpoints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: multiple patterns overlap on their endpoints
[INFO] [stderr]   --> src/integer_to_roman.rs:22:17
[INFO] [stderr]    |
[INFO] [stderr] 21 |                 50...90 => ("L", 50),
[INFO] [stderr]    |                 ------- this range overlaps on `50_i32`...
[INFO] [stderr] 22 |                 40...50 => ("XL", 40),
[INFO] [stderr]    |                 ^^^^^^^ ... with this range
[INFO] [stderr]    |
[INFO] [stderr]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stderr] 
[INFO] [stderr] warning: multiple patterns overlap on their endpoints
[INFO] [stderr]   --> src/integer_to_roman.rs:21:17
[INFO] [stderr]    |
[INFO] [stderr] 20 |                 90...100 => ("XC", 90),
[INFO] [stderr]    |                 -------- this range overlaps on `90_i32`...
[INFO] [stderr] 21 |                 50...90 => ("L", 50),
[INFO] [stderr]    |                 ^^^^^^^ ... with this range
[INFO] [stderr]    |
[INFO] [stderr]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stderr] 
[INFO] [stderr] warning: multiple patterns overlap on their endpoints
[INFO] [stderr]   --> src/integer_to_roman.rs:20:17
[INFO] [stderr]    |
[INFO] [stderr] 19 |                 100...400 => ("C", 100),
[INFO] [stderr]    |                 --------- this range overlaps on `100_i32`...
[INFO] [stderr] 20 |                 90...100 => ("XC", 90),
[INFO] [stderr]    |                 ^^^^^^^^ ... with this range
[INFO] [stderr]    |
[INFO] [stderr]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stderr] 
[INFO] [stderr] warning: multiple patterns overlap on their endpoints
[INFO] [stderr]   --> src/integer_to_roman.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 18 |                 400...500 => ("CD", 400),
[INFO] [stderr]    |                 --------- this range overlaps on `400_i32`...
[INFO] [stderr] 19 |                 100...400 => ("C", 100),
[INFO] [stderr]    |                 ^^^^^^^^^ ... with this range
[INFO] [stderr]    |
[INFO] [stderr]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stderr] 
[INFO] [stderr] warning: multiple patterns overlap on their endpoints
[INFO] [stderr]   --> src/integer_to_roman.rs:18:17
[INFO] [stderr]    |
[INFO] [stderr] 17 |                 500...900 => ("D", 500),
[INFO] [stderr]    |                 --------- this range overlaps on `500_i32`...
[INFO] [stderr] 18 |                 400...500 => ("CD", 400),
[INFO] [stderr]    |                 ^^^^^^^^^ ... with this range
[INFO] [stderr]    |
[INFO] [stderr]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stderr] 
[INFO] [stderr] warning: multiple patterns overlap on their endpoints
[INFO] [stderr]   --> src/integer_to_roman.rs:17:17
[INFO] [stderr]    |
[INFO] [stderr] 16 |                 900...1000 => ("CM", 900),
[INFO] [stderr]    |                 ---------- this range overlaps on `900_i32`...
[INFO] [stderr] 17 |                 500...900 => ("D", 500),
[INFO] [stderr]    |                 ^^^^^^^^^ ... with this range
[INFO] [stderr]    |
[INFO] [stderr]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stderr] 
[INFO] [stderr] warning: multiple patterns overlap on their endpoints
[INFO] [stderr]   --> src/integer_to_roman.rs:16:17
[INFO] [stderr]    |
[INFO] [stderr] 15 |                 1000...std::i32::MAX => ("M", 1000),
[INFO] [stderr]    |                 -------------------- this range overlaps on `1000_i32`...
[INFO] [stderr] 16 |                 900...1000 => ("CM", 900),
[INFO] [stderr]    |                 ^^^^^^^^^^ ... with this range
[INFO] [stderr]    |
[INFO] [stderr]    = note: you likely meant to write mutually exclusive ranges
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/sudoku_solver.rs:106:13
[INFO] [stderr]     |
[INFO] [stderr] 106 |         let mut expected_solution = 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: variable does not need to be mutable
[INFO] [stderr]    --> src/sudoku_solver.rs:122:13
[INFO] [stderr]     |
[INFO] [stderr] 122 |         let mut expected_solution = vec![
[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/combination_sum.rs:16:25
[INFO] [stderr]    |
[INFO] [stderr] 16 |                     let mut vec1 = Solution::combination_sum(candidates.clone(), target - *x);
[INFO] [stderr]    |                         ----^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/invert_binary_tree.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 37 | struct Solution;
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `TreeNode` is never constructed
[INFO] [stderr]   --> src/invert_binary_tree.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub struct TreeNode {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/invert_binary_tree.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 46 | impl TreeNode {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 47 |     #[inline]
[INFO] [stderr] 48 |     pub fn new(val: i32) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `invert_tree` is never used
[INFO] [stderr]   --> src/invert_binary_tree.rs:63:12
[INFO] [stderr]    |
[INFO] [stderr] 62 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 63 |     pub fn invert_tree(root: Option<Rc<RefCell<TreeNode>>>) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]  --> src/big_countries.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]   --> src/big_countries.rs:10:4
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn main() {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]  --> src/list.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | impl ListNode {
[INFO] [stderr]   | ------------- associated function in this implementation
[INFO] [stderr] 8 |     #[inline]
[INFO] [stderr] 9 |     fn new(val: i32) -> Self {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `TreeNode` is never constructed
[INFO] [stderr]  --> src/merge_two_binary_trees.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub struct TreeNode {
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/merge_two_binary_trees.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 15 | impl TreeNode {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 16 |     #[inline]
[INFO] [stderr] 17 |     pub fn new(val: i32) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]   --> src/merge_two_binary_trees.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct Solution;
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `merge_trees` is never used
[INFO] [stderr]   --> src/merge_two_binary_trees.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 31 | impl Solution {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 32 |     pub fn merge_trees(
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `RecentCounter` is never constructed
[INFO] [stderr]  --> src/number_of_recent_calls.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct RecentCounter {
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `ping` are never used
[INFO] [stderr]   --> src/number_of_recent_calls.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl RecentCounter {
[INFO] [stderr]    | ------------------ associated items in this implementation
[INFO] [stderr] 12 |     fn new() -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 16 |     fn ping(&mut self, t: i32) -> i32 {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stderr]   --> src/letter_combinations_of_a_phone_number.rs:43:58
[INFO] [stderr]    |
[INFO] [stderr] 43 |                     ret.push(format!("{}{}", x.clone(), y.clone()));
[INFO] [stderr]    |                                                          ^^^^^^^^ help: remove this redundant call
[INFO] [stderr]    |
[INFO] [stderr]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stderr]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/sort_colors.rs:19:28
[INFO] [stderr]    |
[INFO] [stderr] 19 |             let value = if 0 <= i && i < counts[0] {
[INFO] [stderr]    |                            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode` (bin "leetcode" test) generated 46 warnings (run `cargo fix --bin "leetcode" --tests` to apply 22 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/leetcode-c55f08e37cfdfbce)
[INFO] [stdout] 
[INFO] [stdout] running 113 tests
[INFO] [stdout] test add_two_number::test::should_return_01 ... ok
[INFO] [stdout] test add_two_number::test::should_return_708 ... ok
[INFO] [stdout] test apply_discount_every_n_orders::test::test1 ... ok
[INFO] [stdout] test binary_tree_level_order_traversal::test::test2 ... ok
[INFO] [stdout] test array_partition_i::test1 ... ok
[INFO] [stdout] test combination_sum::all_test ... ok
[INFO] [stdout] test container_with_most_water::test::test ... ok
[INFO] [stdout] test convert_a_number_to_hexadecimal::test::test2 ... ok
[INFO] [stdout] test di_string_match::ddi ... ok
[INFO] [stdout] test convert_a_number_to_hexadecimal::test::test3 ... ok
[INFO] [stdout] test di_string_match::idid ... ok
[INFO] [stdout] test di_string_match::iii ... ok
[INFO] [stdout] test convert_a_number_to_hexadecimal::test::test1 ... ok
[INFO] [stdout] test divide_two_integers::test::test1 ... ok
[INFO] [stdout] test divide_two_integers::test::test4 ... ok
[INFO] [stdout] test divide_two_integers::test::test5 ... ok
[INFO] [stdout] test divide_two_integers::test::test9 ... ok
[INFO] [stdout] test flipping_an_image::test1 ... ok
[INFO] [stdout] test generate_parentheses::test::test_n_equals_0 ... ok
[INFO] [stdout] test implement_strstr::test::test1 ... ok
[INFO] [stdout] test implement_strstr::test::test3 ... ok
[INFO] [stdout] test hamming_distance::test ... ok
[INFO] [stdout] test implement_strstr::test::test6 ... ok
[INFO] [stdout] test implement_strstr::test::test7 ... ok
[INFO] [stdout] test integer_to_roman::test::should_return_ix_given_9 ... ok
[INFO] [stdout] test integer_to_roman::test::should_return_lviii_given_58 ... ok
[INFO] [stdout] test divide_two_integers::test::test3 ... ok
[INFO] [stdout] test divide_two_integers::test::test7 ... ok
[INFO] [stdout] test divide_two_integers::test::test8 ... ok
[INFO] [stdout] test implement_strstr::test::test4 ... ok
[INFO] [stdout] test generate_parentheses::test::test ... ok
[INFO] [stdout] test letter_combinations_of_a_phone_number::test::should_work_with_one_letter ... ok
[INFO] [stdout] test integer_to_roman::test::should_return_mcmxciv_given_1994 ... ok
[INFO] [stdout] test longest_substring_without_repeating_characters::test::should_return_0_given_empty_string ... ok
[INFO] [stdout] test divide_two_integers::test::test6 ... ok
[INFO] [stdout] test implement_strstr::test::test2 ... ok
[INFO] [stdout] test jewels_and_stones::all_test ... ok
[INFO] [stdout] test longest_substring_without_repeating_characters::test::should_return_1_given_bbbbb ... ok
[INFO] [stdout] test longest_substring_without_repeating_characters::test::should_return_3_given_abcabcbb ... ok
[INFO] [stdout] test maximum_depth_of_binary_tree::test::test ... ok
[INFO] [stdout] test maximum_depth_of_binary_tree::test::test2 ... ok
[INFO] [stdout] test nim_game::test ... ok
[INFO] [stdout] test letter_combinations_of_a_phone_number::test::should_work_with_two_letter ... ok
[INFO] [stdout] test letter_combinations_of_a_phone_number::test::should_work_with_two_letter_with_invalid_letter ... ok
[INFO] [stdout] test longest_substring_without_repeating_characters::test::should_return_0_given_empty ... ok
[INFO] [stdout] test longest_substring_without_repeating_characters::test::should_return_3_given_pwwkew ... ok
[INFO] [stdout] test flipping_an_image::test2 ... ok
[INFO] [stdout] test divide_two_integers::test::test2 ... ok
[INFO] [stdout] test implement_strstr::test::test5 ... ok
[INFO] [stdout] test palindrome_number::test::should_return_false_given_10 ... ok
[INFO] [stdout] test palindrome_number::test::should_return_false_given_negative_number ... ok
[INFO] [stdout] test palindrome_number::test::should_return_true_given_121 ... ok
[INFO] [stdout] test palindrome_number::test::should_return_true_given_zero ... ok
[INFO] [stdout] test peak_index_in_a_mountain_array::test1 ... ok
[INFO] [stdout] test permutations::test::test ... ok
[INFO] [stdout] test remove_element::test::test1 ... ok
[INFO] [stdout] test remove_duplicates_from_sorted_array::test::should_return_2_given_1_1_2 ... ok
[INFO] [stdout] test remove_duplicates_from_sorted_array::test::should_return_5_given_0_0_1_1_1_2_2_3_3_4 ... ok
[INFO] [stdout] test remove_element::test::test2 ... ok
[INFO] [stdout] test peak_index_in_a_mountain_array::test2 ... ok
[INFO] [stdout] test integer_to_roman::test::should_return_iii_given_3 ... ok
[INFO] [stdout] test reverse_integer::test::should_return_negative_321_given_negative_123 ... ok
[INFO] [stdout] test robot_return_to_origin::test ... ok
[INFO] [stdout] test reverse_integer::test::should_return_0_given_1534236469 ... ok
[INFO] [stdout] test same_tree::test::test ... ok
[INFO] [stdout] test same_tree::test::test2 ... ok
[INFO] [stdout] test same_tree::test::test3 ... ok
[INFO] [stdout] test search_in_rotated_sorted_array::test::test ... ok
[INFO] [stdout] test search_in_rotated_sorted_array::test::test2 ... ok
[INFO] [stdout] test reverse_integer::test::should_return_321_given_123 ... ok
[INFO] [stdout] test search_in_rotated_sorted_array::test::test3 ... ok
[INFO] [stdout] test search_in_rotated_sorted_array::test::test4 ... ok
[INFO] [stdout] test search_in_rotated_sorted_array::test::test5 ... ok
[INFO] [stdout] test reverse_integer::test::should_return_21_given_120 ... ok
[INFO] [stdout] test search_in_rotated_sorted_array::test::test_rotated ... ok
[INFO] [stdout] test sort_array_by_parity_ii::test1 ... ok
[INFO] [stdout] test sort_array_by_parity::test1 ... ok
[INFO] [stdout] test search_in_rotated_sorted_array::test::test6 ... ok
[INFO] [stdout] test string_to_integer_atoi::test::should_get_zero_with_internal_space ... ok
[INFO] [stdout] test self_dividing_numbers::test1 ... ok
[INFO] [stdout] test string_to_integer_atoi::test::should_get_zero_with_prefix_words ... ok
[INFO] [stdout] test string_to_integer_atoi::test::should_work_with_both_add_minus_mark ... ok
[INFO] [stdout] test string_to_integer_atoi::test::should_work_with_minus_mark ... ok
[INFO] [stdout] test string_to_integer_atoi::test::should_work_with_add_mark ... ok
[INFO] [stdout] test string_to_integer_atoi::test::should_check_overflow ... ok
[INFO] [stdout] test string_to_integer_atoi::test::should_work_with_prefix_space ... ok
[INFO] [stdout] test string_to_integer_atoi::test::should_work_with_postfix_external_words ... ok
[INFO] [stdout] test string_to_integer_atoi::test::test ... ok
[INFO] [stdout] test binary_tree_level_order_traversal::test::test ... FAILED
[INFO] [stdout] test sort_colors::test::should_sort_given_non_sorted_vec ... ok
[INFO] [stdout] test string_to_integer_atoi::test::should_work_with_normal_number ... ok
[INFO] [stdout] test three_sum::test::test ... ok
[INFO] [stdout] test three_sum::test::test2 ... ok
[INFO] [stdout] test three_sum_closest::test::test ... ok
[INFO] [stdout] test to_lower_case::test ... ok
[INFO] [stdout] test two_sum::test1 ... ok
[INFO] [stdout] test two_sum::test3 ... ok
[INFO] [stdout] test unique_morse_code_words::test1 ... ok
[INFO] [stdout] test unique_email_addresses::test ... ok
[INFO] [stdout] test valid_parentheses::test::test1 ... ok
[INFO] [stdout] test valid_parentheses::test::test3 ... ok
[INFO] [stdout] test valid_parentheses::test::test4 ... ok
[INFO] [stdout] test sudoku_solver::test::test_invalid_method ... ok
[INFO] [stdout] test two_sum::test2 ... ok
[INFO] [stdout] test valid_parentheses::test::test2 ... ok
[INFO] [stdout] test valid_parentheses::test::test5 ... ok
[INFO] [stdout] test valid_sudoku::test::test ... ok
[INFO] [stdout] test valid_sudoku::test::test2 ... ok
[INFO] [stdout] test zigzag_conversion::test::should_it_works ... ok
[INFO] [stdout] test zigzag_conversion::test::should_it_works_too ... ok
[INFO] [stdout] test zigzag_conversion::test::show_return_itself_when_number_is_1 ... ok
[INFO] [stdout] test integer_to_roman::test::should_return_iv_given_4 ... ok
[INFO] [stdout] test sudoku_solver::test::test ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- binary_tree_level_order_traversal::test::test stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'binary_tree_level_order_traversal::test::test' panicked at src/binary_tree_level_order_traversal.rs:130:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: [[3], [9, 20], [15, 7]]
[INFO] [stdout]  right: [[3], [20, 9], [15, 7]]
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x6406f969d742 - 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:     0x6406f969d742 - 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:     0x6406f969d742 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x6406f969d742 - <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:     0x6406f96c3c63 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x6406f96c3c63 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x6406f969a6c3 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x6406f969a6c3 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x6406f969d592 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x6406f969ecb9 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x6406f969eaee - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x6406f96670c4 - <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:     0x6406f96670c4 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x6406f969f68e - <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:     0x6406f969f68e - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x6406f969f45a - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x6406f969dc39 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x6406f969f0ed - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x6406f96c22c0 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x6406f96c2613 - core::panicking::assert_failed_inner::h102b4539a88470c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:448:17
[INFO] [stdout]   20:     0x6406f9618bf1 - core::panicking::assert_failed::hea91655cb8e29252
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:403:5
[INFO] [stdout]   21:     0x6406f95ec79a - leetcode::binary_tree_level_order_traversal::test::test::h9eb625463237a0ef
[INFO] [stdout]                                at /opt/rustwide/workdir/src/binary_tree_level_order_traversal.rs:130:9
[INFO] [stdout]   22:     0x6406f95ebf47 - leetcode::binary_tree_level_order_traversal::test::test::{{closure}}::hb6f305785911c90d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/binary_tree_level_order_traversal.rs:109:14
[INFO] [stdout]   23:     0x6406f95fe256 - core::ops::function::FnOnce::call_once::h386d7d3001490eab
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   24:     0x6406f966c92b - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   25:     0x6406f966c92b - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   26:     0x6406f966ba65 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   27:     0x6406f966ba65 - <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:     0x6406f966ba65 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   29:     0x6406f966ba65 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   30:     0x6406f966ba65 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x6406f966ba65 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   32:     0x6406f966ba65 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   33:     0x6406f962f664 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   34:     0x6406f962f664 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x6406f963303a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x6406f963303a - <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:     0x6406f963303a - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   38:     0x6406f963303a - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   39:     0x6406f963303a - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x6406f963303a - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x6406f963303a - 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:     0x6406f96a260f - <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:     0x6406f96a260f - 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:     0x71b9074a3aa4 - <unknown>
[INFO] [stdout]   45:     0x71b907530a34 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     binary_tree_level_order_traversal::test::test
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 112 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.37s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin leetcode`
[INFO] running `Command { std: "docker" "inspect" "7e699585bf77273a84efdc82161f1438de02be51195502d52babe0672561bbf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e699585bf77273a84efdc82161f1438de02be51195502d52babe0672561bbf5", kill_on_drop: false }`
[INFO] [stdout] 7e699585bf77273a84efdc82161f1438de02be51195502d52babe0672561bbf5
