[INFO] cloning repository https://github.com/LgnMs/my-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/LgnMs/my-leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLgnMs%2Fmy-leetcode-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLgnMs%2Fmy-leetcode-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1bdddbeb6c1f96f6aea5e34fd771fa57786c239a
[INFO] checking LgnMs/my-leetcode-rust against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLgnMs%2Fmy-leetcode-rust" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LgnMs/my-leetcode-rust on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LgnMs/my-leetcode-rust
[INFO] finished tweaking git repo https://github.com/LgnMs/my-leetcode-rust
[INFO] tweaked toml for git repo https://github.com/LgnMs/my-leetcode-rust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/LgnMs/my-leetcode-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44eba0ecdfdeead5d4e1976717e2b9a5ab76435650c11950c6fb88aa2f603f4a
[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" "44eba0ecdfdeead5d4e1976717e2b9a5ab76435650c11950c6fb88aa2f603f4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44eba0ecdfdeead5d4e1976717e2b9a5ab76435650c11950c6fb88aa2f603f4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44eba0ecdfdeead5d4e1976717e2b9a5ab76435650c11950c6fb88aa2f603f4a", kill_on_drop: false }`
[INFO] [stdout] 44eba0ecdfdeead5d4e1976717e2b9a5ab76435650c11950c6fb88aa2f603f4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20e3a017a70d9c57c73f9b6bf34ba2d7bd9b49520daa8dd5c8f4991d76b52b15
[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" "20e3a017a70d9c57c73f9b6bf34ba2d7bd9b49520daa8dd5c8f4991d76b52b15", kill_on_drop: false }`
[INFO] [stderr]     Checking tree v0.1.0 (/opt/rustwide/workdir/tree)
[INFO] [stderr]     Checking string v0.1.0 (/opt/rustwide/workdir/string)
[INFO] [stderr]     Checking greedy v0.1.0 (/opt/rustwide/workdir/greedy)
[INFO] [stderr]     Checking dynamic_programming v0.1.0 (/opt/rustwide/workdir/dynamic_programming)
[INFO] [stderr]     Checking two_pointers v0.1.0 (/opt/rustwide/workdir/two_pointers)
[INFO] [stderr]     Checking math v0.1.0 (/opt/rustwide/workdir/math)
[INFO] [stderr]     Checking bit_manipulation v0.1.0 (/opt/rustwide/workdir/bit_manipulation)
[INFO] [stderr]     Checking sort v0.1.0 (/opt/rustwide/workdir/sort)
[INFO] [stderr]     Checking hash_table v0.1.0 (/opt/rustwide/workdir/hash_table)
[INFO] [stderr]     Checking linked_list v0.1.0 (/opt/rustwide/workdir/linked_list)
[INFO] [stdout] warning: function is never used: `is_palindrome`
[INFO] [stdout]  --> math/is_palindrome.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn is_palindrome(x: i32) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `plus_one`
[INFO] [stdout]  --> math/plus_one.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn plus_one(mut digits: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `roman_to_int`
[INFO] [stdout]  --> math/roman_to_int.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn roman_to_int(s: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rotate`
[INFO] [stdout]  --> math/rotate.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn rotate(nums: &mut Vec<i32>, k: i32) {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_valid_bst`
[INFO] [stdout]   --> tree/is_valid_bst.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn is_valid_bst(root: Option<Rc<RefCell<TreeNode>>>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_valid_bst2`
[INFO] [stdout]   --> tree/is_valid_bst.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn is_valid_bst2(root: Option<Rc<RefCell<TreeNode>>>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Rt`
[INFO] [stdout]   --> tree/max_depth.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | type Rt = Rc<RefCell<TreeNode>>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `max_depth`
[INFO] [stdout]   --> tree/max_depth.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn max_depth(root: Option<Rt>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `preorder_traversal`
[INFO] [stdout]   --> tree/preorder_traversal.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn preorder_traversal(root: Option<Rc<RefCell<TreeNode>>>) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Node`
[INFO] [stdout]   --> tree/is_symmetric.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub type Node = Rc<RefCell<TreeNode>>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_symmetric`
[INFO] [stdout]   --> tree/is_symmetric.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn is_symmetric(root: Option<Node>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `;` or `{`, found keyword `mod`
[INFO] [stdout]  --> dynamic_programming/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | mod nu
[INFO] [stdout]   |       - expected one of `;` or `{`
[INFO] [stdout] 8 | mod num_array;
[INFO] [stdout]   | ^^^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dynamic_programming`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `single_number`
[INFO] [stdout]  --> bit_manipulation/single_number.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn single_number(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `xor_operation`
[INFO] [stdout]  --> bit_manipulation/xor_operation.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn xor_operation(n: i32, start: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `contains_duplicate`
[INFO] [stdout]  --> sort/contains_duplicate.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn contains_duplicate(mut nums: Vec<i32>) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `;` or `{`, found keyword `mod`
[INFO] [stdout]  --> dynamic_programming/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | mod nu
[INFO] [stdout]   |       - expected one of `;` or `{`
[INFO] [stdout] 8 | mod num_array;
[INFO] [stdout]   | ^^^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_uniq_char`
[INFO] [stdout]   --> string/first_uniq_char.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn first_uniq_char(s: String) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_anagram`
[INFO] [stdout]  --> string/is_anagram.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn is_anagram(s: String, t: String) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_palindrome`
[INFO] [stdout]  --> string/is_palindrome.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn is_palindrome(s: String) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse`
[INFO] [stdout]  --> string/reverse.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn reverse(x: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse_string`
[INFO] [stdout]  --> string/reverse_string.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn reverse_string(s: &mut Vec<char>) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `max_profit2`
[INFO] [stdout]   --> greedy/max_profit2.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn max_profit2(prices: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "20e3a017a70d9c57c73f9b6bf34ba2d7bd9b49520daa8dd5c8f4991d76b52b15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20e3a017a70d9c57c73f9b6bf34ba2d7bd9b49520daa8dd5c8f4991d76b52b15", kill_on_drop: false }`
[INFO] [stdout] 20e3a017a70d9c57c73f9b6bf34ba2d7bd9b49520daa8dd5c8f4991d76b52b15