[INFO] cloning repository https://github.com/mekas/BinaryTree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mekas/BinaryTree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmekas%2FBinaryTree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmekas%2FBinaryTree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b91a9b39004390780f6991df22344391a7b6f9d
[INFO] checking mekas/BinaryTree against try#b66808126f24f2f30898306a881e1676824ea80c for pr-133502-23
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmekas%2FBinaryTree" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mekas/BinaryTree
[INFO] finished tweaking git repo https://github.com/mekas/BinaryTree
[INFO] tweaked toml for git repo https://github.com/mekas/BinaryTree written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mekas/BinaryTree on toolchain b66808126f24f2f30898306a881e1676824ea80c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b66808126f24f2f30898306a881e1676824ea80c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mekas/BinaryTree 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" "+b66808126f24f2f30898306a881e1676824ea80c" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking mekas/BinaryTree against try#b66808126f24f2f30898306a881e1676824ea80c for pr-133502-23
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmekas%2FBinaryTree" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mekas/BinaryTree
[INFO] finished tweaking git repo https://github.com/mekas/BinaryTree
[INFO] tweaked toml for git repo https://github.com/mekas/BinaryTree written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mekas/BinaryTree on toolchain b66808126f24f2f30898306a881e1676824ea80c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b66808126f24f2f30898306a881e1676824ea80c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mekas/BinaryTree 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" "+b66808126f24f2f30898306a881e1676824ea80c" "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-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 8e7ed4b9130753e253b3f804c4cfbbcfd058d270e41f2f48bc774f658f22fabf
[INFO] running `Command { std: "docker" "start" "8e7ed4b9130753e253b3f804c4cfbbcfd058d270e41f2f48bc774f658f22fabf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e7ed4b9130753e253b3f804c4cfbbcfd058d270e41f2f48bc774f658f22fabf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "8e7ed4b9130753e253b3f804c4cfbbcfd058d270e41f2f48bc774f658f22fabf" "/opt/rustwide/cargo-home/bin/cargo" "+b66808126f24f2f30898306a881e1676824ea80c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e7ed4b9130753e253b3f804c4cfbbcfd058d270e41f2f48bc774f658f22fabf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "8e7ed4b9130753e253b3f804c4cfbbcfd058d270e41f2f48bc774f658f22fabf" "/opt/rustwide/cargo-home/bin/cargo" "+b66808126f24f2f30898306a881e1676824ea80c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking binarysearchtree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `current_node_link`
[INFO] [stdout]   --> src/structure/mod.rs:50:42
[INFO] [stdout]    |
[INFO] [stdout] 50 |         pub fn add_left_child(&mut self, current_node_link: &NodeLink, value: i32){
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_node_link`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current_node_link`
[INFO] [stdout]   --> src/structure/mod.rs:50:42
[INFO] [stdout]    |
[INFO] [stdout] 50 |         pub fn add_left_child(&mut self, current_node_link: &NodeLink, value: i32){
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_node_link`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/structure/mod.rs:50:72
[INFO] [stdout]    |
[INFO] [stdout] 50 |         pub fn add_left_child(&mut self, current_node_link: &NodeLink, value: i32){
[INFO] [stdout]    |                                                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/structure/mod.rs:50:72
[INFO] [stdout]    |
[INFO] [stdout] 50 |         pub fn add_left_child(&mut self, current_node_link: &NodeLink, value: i32){
[INFO] [stdout]    |                                                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current_node_link`
[INFO] [stdout]   --> src/structure/mod.rs:57:43
[INFO] [stdout]    |
[INFO] [stdout] 57 |         pub fn add_right_child(&mut self, current_node_link: &NodeLink, value: i32){
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_node_link`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current_node_link`
[INFO] [stdout]   --> src/structure/mod.rs:57:43
[INFO] [stdout]    |
[INFO] [stdout] 57 |         pub fn add_right_child(&mut self, current_node_link: &NodeLink, value: i32){
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_node_link`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/structure/mod.rs:57:73
[INFO] [stdout]    |
[INFO] [stdout] 57 |         pub fn add_right_child(&mut self, current_node_link: &NodeLink, value: i32){
[INFO] [stdout]    |                                                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/structure/mod.rs:57:73
[INFO] [stdout]    |
[INFO] [stdout] 57 |         pub fn add_right_child(&mut self, current_node_link: &NodeLink, value: i32){
[INFO] [stdout]    |                                                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/structure/mod.rs:69:41
[INFO] [stdout]    |
[INFO] [stdout] 69 |         pub fn get_node_by_value(&self, value: i32) -> Option<&mut NodeLink> {
[INFO] [stdout]    |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/structure/mod.rs:69:41
[INFO] [stdout]    |
[INFO] [stdout] 69 |         pub fn get_node_by_value(&self, value: i32) -> Option<&mut NodeLink> {
[INFO] [stdout]    |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> src/structure/mod.rs:77:49
[INFO] [stdout]    |
[INFO] [stdout] 77 |         pub fn get_node_by_full_property(&self, node: &NodeLink) -> Option<&mut NodeLink>{
[INFO] [stdout]    |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/structure/mod.rs:86:49
[INFO] [stdout]    |
[INFO] [stdout] 86 |         pub fn discard_node_by_value(&mut self, value: i32) -> bool{
[INFO] [stdout]    |                                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> src/structure/mod.rs:77:49
[INFO] [stdout]    |
[INFO] [stdout] 77 |         pub fn get_node_by_full_property(&self, node: &NodeLink) -> Option<&mut NodeLink>{
[INFO] [stdout]    |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/structure/mod.rs:86:49
[INFO] [stdout]    |
[INFO] [stdout] 86 |         pub fn discard_node_by_value(&mut self, value: i32) -> bool{
[INFO] [stdout]    |                                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]    --> src/structure/mod.rs:100:40
[INFO] [stdout]     |
[INFO] [stdout] 100 |         pub fn count_nodes_by_nodelink(node: &NodeLink) -> i32{
[INFO] [stdout]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]    --> src/structure/mod.rs:100:40
[INFO] [stdout]     |
[INFO] [stdout] 100 |         pub fn count_nodes_by_nodelink(node: &NodeLink) -> i32{
[INFO] [stdout]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nodelink`
[INFO] [stdout]    --> src/structure/mod.rs:115:28
[INFO] [stdout]     |
[INFO] [stdout] 115 |         pub fn get_sibling(nodelink: &NodeLink) -> Option<&NodeLink>{
[INFO] [stdout]     |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nodelink`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]  --> src/tool/mod.rs:9:25
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn generate_dotfile(root: &NodeLink, output_path: &str){
[INFO] [stdout]   |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nodelink`
[INFO] [stdout]    --> src/structure/mod.rs:115:28
[INFO] [stdout]     |
[INFO] [stdout] 115 |         pub fn get_sibling(nodelink: &NodeLink) -> Option<&NodeLink>{
[INFO] [stdout]     |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nodelink`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_path`
[INFO] [stdout]  --> src/tool/mod.rs:9:42
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn generate_dotfile(root: &NodeLink, output_path: &str){
[INFO] [stdout]   |                                          ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]  --> src/tool/mod.rs:9:25
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn generate_dotfile(root: &NodeLink, output_path: &str){
[INFO] [stdout]   |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]   --> src/tool/mod.rs:16:20
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn print_graph(root: &NodeLink){
[INFO] [stdout]    |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_path`
[INFO] [stdout]  --> src/tool/mod.rs:9:42
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn generate_dotfile(root: &NodeLink, output_path: &str){
[INFO] [stdout]   |                                          ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]   --> src/tool/mod.rs:16:20
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn print_graph(root: &NodeLink){
[INFO] [stdout]    |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value`, `parent`, `left`, and `right` are never read
[INFO] [stdout]   --> src/structure/mod.rs:9:13
[INFO] [stdout]    |
[INFO] [stdout]  8 |     pub struct Node{
[INFO] [stdout]    |                ---- fields in this struct
[INFO] [stdout]  9 |         pub value: i32,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 10 |         pub parent: Option<Weak<RefCell<Node>>>,
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout] 11 |         pub left: Option<NodeLink>,
[INFO] [stdout]    |             ^^^^
[INFO] [stdout] 12 |         pub right: Option<NodeLink>
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value`, `parent`, `left`, and `right` are never read
[INFO] [stdout]   --> src/structure/mod.rs:9:13
[INFO] [stdout]    |
[INFO] [stdout]  8 |     pub struct Node{
[INFO] [stdout]    |                ---- fields in this struct
[INFO] [stdout]  9 |         pub value: i32,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 10 |         pub parent: Option<Weak<RefCell<Node>>>,
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout] 11 |         pub left: Option<NodeLink>,
[INFO] [stdout]    |             ^^^^
[INFO] [stdout] 12 |         pub right: Option<NodeLink>
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/structure/mod.rs:35:12
[INFO] [stdout]     |
[INFO] [stdout]  17 |     impl Node{
[INFO] [stdout]     |     --------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  35 |         fn get_node_link(self) -> NodeLink{
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  40 |         fn new_with_parent(parent: &NodeLink, value: i32) -> NodeLink {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  50 |         pub fn add_left_child(&mut self, current_node_link: &NodeLink, value: i32){
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  57 |         pub fn add_right_child(&mut self, current_node_link: &NodeLink, value: i32){
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  61 |         fn add_parent(&mut self, node: Weak<RefCell<Node>>){
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  69 |         pub fn get_node_by_value(&self, value: i32) -> Option<&mut NodeLink> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  77 |         pub fn get_node_by_full_property(&self, node: &NodeLink) -> Option<&mut NodeLink>{
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  86 |         pub fn discard_node_by_value(&mut self, value: i32) -> bool{
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  94 |         pub fn count_nodes(&self) -> i32{
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |         pub fn count_nodes_by_nodelink(node: &NodeLink) -> i32{
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |         pub fn tree_depth(&self) -> i32{
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 115 |         pub fn get_sibling(nodelink: &NodeLink) -> Option<&NodeLink>{
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_graph` is never used
[INFO] [stdout]   --> src/tool/mod.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn print_graph(root: &NodeLink){
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/structure/mod.rs:35:12
[INFO] [stdout]     |
[INFO] [stdout]  17 |     impl Node{
[INFO] [stdout]     |     --------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  35 |         fn get_node_link(self) -> NodeLink{
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  40 |         fn new_with_parent(parent: &NodeLink, value: i32) -> NodeLink {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  50 |         pub fn add_left_child(&mut self, current_node_link: &NodeLink, value: i32){
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  57 |         pub fn add_right_child(&mut self, current_node_link: &NodeLink, value: i32){
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  61 |         fn add_parent(&mut self, node: Weak<RefCell<Node>>){
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  69 |         pub fn get_node_by_value(&self, value: i32) -> Option<&mut NodeLink> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  77 |         pub fn get_node_by_full_property(&self, node: &NodeLink) -> Option<&mut NodeLink>{
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  86 |         pub fn discard_node_by_value(&mut self, value: i32) -> bool{
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  94 |         pub fn count_nodes(&self) -> i32{
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |         pub fn count_nodes_by_nodelink(node: &NodeLink) -> i32{
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |         pub fn tree_depth(&self) -> i32{
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 115 |         pub fn get_sibling(nodelink: &NodeLink) -> Option<&NodeLink>{
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_graph` is never used
[INFO] [stdout]   --> src/tool/mod.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn print_graph(root: &NodeLink){
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "8e7ed4b9130753e253b3f804c4cfbbcfd058d270e41f2f48bc774f658f22fabf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e7ed4b9130753e253b3f804c4cfbbcfd058d270e41f2f48bc774f658f22fabf", kill_on_drop: false }`
[INFO] [stdout] 8e7ed4b9130753e253b3f804c4cfbbcfd058d270e41f2f48bc774f658f22fabf
