[INFO] cloning repository https://github.com/sfarqu/leetcode_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sfarqu/leetcode_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsfarqu%2Fleetcode_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsfarqu%2Fleetcode_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7ba4b0c6c89743c8c2c8661b6369e134f4f16878
[INFO] checking sfarqu/leetcode_rs against master#4b9792692fbb675174d4d2082e7c37b2bc930e71 for pr-153692-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsfarqu%2Fleetcode_rs" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sfarqu/leetcode_rs
[INFO] finished tweaking git repo https://github.com/sfarqu/leetcode_rs
[INFO] tweaked toml for git repo https://github.com/sfarqu/leetcode_rs written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sfarqu/leetcode_rs on toolchain 4b9792692fbb675174d4d2082e7c37b2bc930e71
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4b9792692fbb675174d4d2082e7c37b2bc930e71" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sfarqu/leetcode_rs 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" "+4b9792692fbb675174d4d2082e7c37b2bc930e71" "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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+4b9792692fbb675174d4d2082e7c37b2bc930e71" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e25a6e212ce0681e451f6384d39bc4a60f60749d182318642a433e1c423a3fd9
[INFO] running `Command { std: "docker" "start" "-a" "e25a6e212ce0681e451f6384d39bc4a60f60749d182318642a433e1c423a3fd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e25a6e212ce0681e451f6384d39bc4a60f60749d182318642a433e1c423a3fd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e25a6e212ce0681e451f6384d39bc4a60f60749d182318642a433e1c423a3fd9", kill_on_drop: false }`
[INFO] [stdout] e25a6e212ce0681e451f6384d39bc4a60f60749d182318642a433e1c423a3fd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+4b9792692fbb675174d4d2082e7c37b2bc930e71" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb40535edd7f3da4c4d337845e14ed6df370a1d0abf89a4b8bac8114bb906ca0
[INFO] running `Command { std: "docker" "start" "-a" "fb40535edd7f3da4c4d337845e14ed6df370a1d0abf89a4b8bac8114bb906ca0", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `spiral_order` is never used
[INFO] [stdout]   --> src/spiral_order.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn spiral_order(matrix: Vec<Vec<i32>>) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ListNode` is never constructed
[INFO] [stdout]   --> src/middle_of_linked_list.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct ListNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/middle_of_linked_list.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 18 |   #[inline]
[INFO] [stdout] 19 |   fn new(val: i32) -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `middle_node` is never used
[INFO] [stdout]   --> src/middle_of_linked_list.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn middle_node(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/maximum_depth_binary_tree.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/maximum_depth_binary_tree.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 17 |   #[inline]
[INFO] [stdout] 18 |   pub fn new(val: i32) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/maximum_depth_binary_tree.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `max_depth` is never used
[INFO] [stdout]   --> src/maximum_depth_binary_tree.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn max_depth(root: Option<Rc<RefCell<TreeNode>>>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]  --> src/balancing_binary_search_tree.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct TreeNode {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/balancing_binary_search_tree.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     #[inline]
[INFO] [stdout] 11 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/balancing_binary_search_tree.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `balance_bst`, `get_list`, `get_list_alt`, and `build_tree` are never used
[INFO] [stdout]   --> src/balancing_binary_search_tree.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 23 |     pub fn balance_bst(root: Option<Rc<RefCell<TreeNode>>>) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     fn get_list(root: Option<Rc<RefCell<TreeNode>>>, mut list: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     fn get_list_alt(root: Option<Rc<RefCell<TreeNode>>>, list: &mut Vec<i32>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn build_tree(list: &[i32]) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/maximum_depth_binary_tree.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 17 |   #[inline]
[INFO] [stdout] 18 |   pub fn new(val: i32) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/balancing_binary_search_tree.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     #[inline]
[INFO] [stdout] 11 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get_list_alt` is never used
[INFO] [stdout]   --> src/balancing_binary_search_tree.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 60 |     fn get_list_alt(root: Option<Rc<RefCell<TreeNode>>>, list: &mut Vec<i32>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "fb40535edd7f3da4c4d337845e14ed6df370a1d0abf89a4b8bac8114bb906ca0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb40535edd7f3da4c4d337845e14ed6df370a1d0abf89a4b8bac8114bb906ca0", kill_on_drop: false }`
[INFO] [stdout] fb40535edd7f3da4c4d337845e14ed6df370a1d0abf89a4b8bac8114bb906ca0
