[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 try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsfarqu%2Fleetcode_rs" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sfarqu/leetcode_rs on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-7/source/Cargo.toml
[INFO] crate git repo https://github.com/sfarqu/leetcode_rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0aea457512b07a78902bdc8143694d5c97e1fb28e13dbc1bc7752eec3b9662b7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0aea457512b07a78902bdc8143694d5c97e1fb28e13dbc1bc7752eec3b9662b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0aea457512b07a78902bdc8143694d5c97e1fb28e13dbc1bc7752eec3b9662b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0aea457512b07a78902bdc8143694d5c97e1fb28e13dbc1bc7752eec3b9662b7", kill_on_drop: false }`
[INFO] [stdout] 0aea457512b07a78902bdc8143694d5c97e1fb28e13dbc1bc7752eec3b9662b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1929498119a5efa1e0624a6ad2f520e7fc3abb91228eac57d4c890a6c676dd6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c1929498119a5efa1e0624a6ad2f520e7fc3abb91228eac57d4c890a6c676dd6", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/maximum_depth_binary_tree.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 |   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: associated function is never used: `new`
[INFO] [stdout]   --> src/balancing_binary_search_tree.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_list_alt`
[INFO] [stdout]   --> src/balancing_binary_search_tree.rs:60:8
[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] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `spiral_order`
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/middle_of_linked_list.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 |   fn new(val: i32) -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `middle_node`
[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: associated function is never used: `new`
[INFO] [stdout]   --> src/maximum_depth_binary_tree.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 |   pub fn new(val: i32) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[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 is never used: `max_depth`
[INFO] [stdout]   --> src/maximum_depth_binary_tree.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn max_depth(root: Option<Rc<RefCell<TreeNode>>>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/balancing_binary_search_tree.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[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 function is never used: `balance_bst`
[INFO] [stdout]   --> src/balancing_binary_search_tree.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn balance_bst(root: Option<Rc<RefCell<TreeNode>>>) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_list`
[INFO] [stdout]   --> src/balancing_binary_search_tree.rs:42:8
[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] 
[INFO] [stdout] warning: associated function is never used: `get_list_alt`
[INFO] [stdout]   --> src/balancing_binary_search_tree.rs:60:8
[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] [stdout] warning: associated function is never used: `build_tree`
[INFO] [stdout]   --> src/balancing_binary_search_tree.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn build_tree(list: &[i32]) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "c1929498119a5efa1e0624a6ad2f520e7fc3abb91228eac57d4c890a6c676dd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1929498119a5efa1e0624a6ad2f520e7fc3abb91228eac57d4c890a6c676dd6", kill_on_drop: false }`
[INFO] [stdout] c1929498119a5efa1e0624a6ad2f520e7fc3abb91228eac57d4c890a6c676dd6