[INFO] cloning repository https://github.com/edsion11/rust_leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/edsion11/rust_leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedsion11%2Frust_leetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedsion11%2Frust_leetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 48cb3e166145be4fd771162baba0570c8cbf86d8
[INFO] testing edsion11/rust_leetcode against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedsion11%2Frust_leetcode" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/edsion11/rust_leetcode on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/edsion11/rust_leetcode
[INFO] finished tweaking git repo https://github.com/edsion11/rust_leetcode
[INFO] tweaked toml for git repo https://github.com/edsion11/rust_leetcode written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/edsion11/rust_leetcode already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca9d33ed1741ef805c234b817eca96dbfb33615244ef3937c7e7331a9f6fe0da
[INFO] running `Command { std: "docker" "start" "-a" "ca9d33ed1741ef805c234b817eca96dbfb33615244ef3937c7e7331a9f6fe0da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca9d33ed1741ef805c234b817eca96dbfb33615244ef3937c7e7331a9f6fe0da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca9d33ed1741ef805c234b817eca96dbfb33615244ef3937c7e7331a9f6fe0da", kill_on_drop: false }`
[INFO] [stdout] ca9d33ed1741ef805c234b817eca96dbfb33615244ef3937c7e7331a9f6fe0da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad267bcb17252b301cc00fd0124107f17430be7b9b0aceb8f567906863dcbc44
[INFO] running `Command { std: "docker" "start" "-a" "ad267bcb17252b301cc00fd0124107f17430be7b9b0aceb8f567906863dcbc44", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_algorithm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/native_solution/leetcode_42.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 |         if (height[left] < height[right]) {
[INFO] [stdout]    |            ^                            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 61 -         if (height[left] < height[right]) {
[INFO] [stdout] 61 +         if height[left] < height[right] {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::Borrow`
[INFO] [stdout]  --> src/native_solution/leetcode_99.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::Borrow, cell::RefCell, rc::Rc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]   --> src/native_solution/leetcode_99.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn recover_tree(root: Option<Rc<RefCell<TreeNode>>>) {
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/native_solution/leetcode_894.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `all_possible_fbt`
[INFO] [stdout]   --> src/native_solution/leetcode_894.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn all_possible_fbt(mut n: i32) -> Vec<Option<Rc<RefCell<TreeNode>>>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/native_solution/leetcode_99.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `recover_tree`
[INFO] [stdout]   --> src/native_solution/leetcode_99.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn recover_tree(root: Option<Rc<RefCell<TreeNode>>>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `swap_tree_node`
[INFO] [stdout]   --> src/native_solution/leetcode_99.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn swap_tree_node(left: &Rc<RefCell<TreeNode>>, right: &Rc<RefCell<TreeNode>>){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `trap`
[INFO] [stdout]  --> src/native_solution/leetcode_42.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn trap(height: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `trap_dp`
[INFO] [stdout]   --> src/native_solution/leetcode_42.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn trap_dp(height: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `trap_two_pointer`
[INFO] [stdout]   --> src/native_solution/leetcode_42.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn trap_two_pointer(height: Vec<i32>) -> i32{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `search`
[INFO] [stdout]  --> src/native_solution/leetcode_33.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn search(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_valid`
[INFO] [stdout]  --> src/native_solution/leetcode_20.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn is_valid(s: String) -> bool {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bucket_sort`
[INFO] [stdout]  --> src/sorts/bucket_sort.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn bucket_sort<H, F, T>(arr: &mut [T], hasher: F)
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Bucket`
[INFO] [stdout]   --> src/sorts/bucket_sort.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Bucket<H, T> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/sorts/bucket_sort.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn new(hash: H, value: T) -> Bucket<H, T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quick_sort`
[INFO] [stdout]  --> src/sorts/three_way_string_quicksort.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn quick_sort(arr: &mut Vec<&str>, lo: i32, hi: i32, d: i32) {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `char_at`
[INFO] [stdout]   --> src/sorts/three_way_string_quicksort.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn char_at(str: &str, i: i32) -> u8 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quick_sort`
[INFO] [stdout]  --> src/sorts/quick_sort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn quick_sort<T: Ord>(arr: &mut [T]){
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `Command { std: "docker" "inspect" "ad267bcb17252b301cc00fd0124107f17430be7b9b0aceb8f567906863dcbc44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad267bcb17252b301cc00fd0124107f17430be7b9b0aceb8f567906863dcbc44", kill_on_drop: false }`
[INFO] [stdout] ad267bcb17252b301cc00fd0124107f17430be7b9b0aceb8f567906863dcbc44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64fb77e6c0ec344a42e6986ea37fdfd00f3ca34c1197eb5438fc59b0768180b9
[INFO] running `Command { std: "docker" "start" "-a" "64fb77e6c0ec344a42e6986ea37fdfd00f3ca34c1197eb5438fc59b0768180b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_algorithm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/native_solution/leetcode_42.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 |         if (height[left] < height[right]) {
[INFO] [stdout]    |            ^                            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 61 -         if (height[left] < height[right]) {
[INFO] [stdout] 61 +         if height[left] < height[right] {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::Borrow`
[INFO] [stdout]  --> src/native_solution/leetcode_99.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::Borrow, cell::RefCell, rc::Rc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]   --> src/native_solution/leetcode_99.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn recover_tree(root: Option<Rc<RefCell<TreeNode>>>) {
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]   --> src/native_solution/leetcode_99.rs:42:6
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let root = Some(Rc::new(RefCell::new(TreeNode{
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/native_solution/leetcode_99.rs:77:7
[INFO] [stdout]    |
[INFO] [stdout] 77 |   let mut prev: Rc<RefCell<TreeNode>> = result.remove(0);
[INFO] [stdout]    |       ----^^^^
[INFO] [stdout]    |       |
[INFO] [stdout]    |       help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `recover_tree`
[INFO] [stdout]   --> src/native_solution/leetcode_99.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn recover_tree(root: Option<Rc<RefCell<TreeNode>>>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `swap_tree_node`
[INFO] [stdout]   --> src/native_solution/leetcode_99.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn swap_tree_node(left: &Rc<RefCell<TreeNode>>, right: &Rc<RefCell<TreeNode>>){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `trap_dp`
[INFO] [stdout]   --> src/native_solution/leetcode_42.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn trap_dp(height: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "64fb77e6c0ec344a42e6986ea37fdfd00f3ca34c1197eb5438fc59b0768180b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64fb77e6c0ec344a42e6986ea37fdfd00f3ca34c1197eb5438fc59b0768180b9", kill_on_drop: false }`
[INFO] [stdout] 64fb77e6c0ec344a42e6986ea37fdfd00f3ca34c1197eb5438fc59b0768180b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 79eeb23c3d9ab39910abdb6c4ea1412ff551c24dc8ff79ed0c83d6987ed8aa5c
[INFO] running `Command { std: "docker" "start" "-a" "79eeb23c3d9ab39910abdb6c4ea1412ff551c24dc8ff79ed0c83d6987ed8aa5c", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/native_solution/leetcode_42.rs:61:12
[INFO] [stderr]    |
[INFO] [stderr] 61 |         if (height[left] < height[right]) {
[INFO] [stderr]    |            ^                            ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 61 -         if (height[left] < height[right]) {
[INFO] [stderr] 61 +         if height[left] < height[right] {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `borrow::Borrow`
[INFO] [stderr]  --> src/native_solution/leetcode_99.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{borrow::Borrow, cell::RefCell, rc::Rc};
[INFO] [stderr]   |           ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `root`
[INFO] [stderr]   --> src/native_solution/leetcode_99.rs:22:21
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn recover_tree(root: Option<Rc<RefCell<TreeNode>>>) {
[INFO] [stderr]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `root`
[INFO] [stderr]   --> src/native_solution/leetcode_99.rs:42:6
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let root = Some(Rc::new(RefCell::new(TreeNode{
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/native_solution/leetcode_99.rs:77:7
[INFO] [stderr]    |
[INFO] [stderr] 77 |   let mut prev: Rc<RefCell<TreeNode>> = result.remove(0);
[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: function is never used: `recover_tree`
[INFO] [stderr]   --> src/native_solution/leetcode_99.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn recover_tree(root: Option<Rc<RefCell<TreeNode>>>) {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `swap_tree_node`
[INFO] [stderr]   --> src/native_solution/leetcode_99.rs:50:8
[INFO] [stderr]    |
[INFO] [stderr] 50 | pub fn swap_tree_node(left: &Rc<RefCell<TreeNode>>, right: &Rc<RefCell<TreeNode>>){
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `trap_dp`
[INFO] [stderr]   --> src/native_solution/leetcode_42.rs:31:8
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn trap_dp(height: Vec<i32>) -> i32 {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_algorithm` (bin "rust_algorithm" test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_algorithm-f8248a5c97329a61)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test native_solution::leetcode_135::test_candy ... ok
[INFO] [stdout] test native_solution::leetcode_20::test_is_valid ... ok
[INFO] [stdout] test native_solution::leetcode_198::test_rob ... ok
[INFO] [stdout] test native_solution::leetcode_33::test_search ... ok
[INFO] [stdout] test native_solution::leetcode_167::test_two_sum ... ok
[INFO] [stdout] test native_solution::leetcode_401::test_add_strings ... ok
[INFO] [stdout] test native_solution::leetcode_42::test_trap_dp ... ok
[INFO] [stdout] test native_solution::leetcode_42::test_trap ... ok
[INFO] [stdout] test native_solution::leetcode_64::main ... ok
[INFO] [stdout] test native_solution::leetcode_70::test_climb_stairs ... ok
[INFO] [stdout] test native_solution::leetcode_88::test_merge ... ok
[INFO] [stdout] test native_solution::leetcode_76::test_min_window ... ok
[INFO] [stdout] test native_solution::leetcode_894::test_all_possible_fbt ... ok
[INFO] [stdout] test native_solution::leetcode_99::test_preorder ... ok
[INFO] [stdout] test native_solution::leetcode_99::test_swap_tree_node ... ok
[INFO] [stdout] test sorts::bucket_sort::test_bucket ... ok
[INFO] [stdout] test sorts::quick_sort::test_quick_sort ... ok
[INFO] [stdout] test sorts::three_way_string_quicksort::test_quick_sort ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "79eeb23c3d9ab39910abdb6c4ea1412ff551c24dc8ff79ed0c83d6987ed8aa5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79eeb23c3d9ab39910abdb6c4ea1412ff551c24dc8ff79ed0c83d6987ed8aa5c", kill_on_drop: false }`
[INFO] [stdout] 79eeb23c3d9ab39910abdb6c4ea1412ff551c24dc8ff79ed0c83d6987ed8aa5c