[INFO] updating cached repository https://github.com/guoraymon/leetcode-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66668ab8c2d6c83f30fe3a7c4a1720b92471648b
[INFO] checking guoraymon/leetcode-rust against try#0ab79c4b48ad19260fa46623f452c1b403a360e8 for pr-74315
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguoraymon%2Fleetcode-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/guoraymon/leetcode-rust on toolchain 0ab79c4b48ad19260fa46623f452c1b403a360e8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/guoraymon/leetcode-rust
[INFO] finished tweaking git repo https://github.com/guoraymon/leetcode-rust
[INFO] tweaked toml for git repo https://github.com/guoraymon/leetcode-rust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/guoraymon/leetcode-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "fetch" "--locked" "--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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39543b9e3a2488c300590420718a447f7bc2d630e6f977ffd0b3a4b967822494
[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" "39543b9e3a2488c300590420718a447f7bc2d630e6f977ffd0b3a4b967822494", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39543b9e3a2488c300590420718a447f7bc2d630e6f977ffd0b3a4b967822494", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39543b9e3a2488c300590420718a447f7bc2d630e6f977ffd0b3a4b967822494", kill_on_drop: false }`
[INFO] [stdout] 39543b9e3a2488c300590420718a447f7bc2d630e6f977ffd0b3a4b967822494
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8afafee9bb8e18eb877441e8b6b32834a3d039aec55737dea39d52127e707d32
[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" "8afafee9bb8e18eb877441e8b6b32834a3d039aec55737dea39d52127e707d32", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/best_time_to_buy_and_sell_stock_ii.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Solution {}
[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: `max_profit`
[INFO] [stdout]   --> src/best_time_to_buy_and_sell_stock_ii.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn max_profit(prices: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/fibonacci_number.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Solution {}
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `recursion`
[INFO] [stdout]   --> src/fibonacci_number.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn recursion(n: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dp`
[INFO] [stdout]   --> src/fibonacci_number.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn dp(n: i32) -> i32 {
[INFO] [stdout]    |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> src/fibonacci_number.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn iter(n: i32) -> i32 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `formula`
[INFO] [stdout]   --> src/fibonacci_number.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn formula(n: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]   --> src/house_robber.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rob`
[INFO] [stdout]   --> src/house_robber.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn rob(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]   --> src/house_robber_ii.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rob`
[INFO] [stdout]   --> src/house_robber_ii.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn rob(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rob_i`
[INFO] [stdout]   --> src/house_robber_ii.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn rob_i(nums: &[i32]) -> i32 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/triangle.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Solution {}
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `minimum_total`
[INFO] [stdout]   --> src/triangle.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn minimum_total(mut triangle: Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/maximal_square.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Solution {}
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `maximal_square`
[INFO] [stdout]  --> src/maximal_square.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn maximal_square(matrix: Vec<Vec<char>>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/maximum_subarray.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Solution {}
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `max_sub_array`
[INFO] [stdout]  --> src/maximum_subarray.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn max_sub_array(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/longest_increasing_subsequence.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Solution {}
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `length_of_lis`
[INFO] [stdout]  --> src/longest_increasing_subsequence.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn length_of_lis(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/longest_common_prefix.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Solution {}
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `longest_common_prefix`
[INFO] [stdout]  --> src/longest_common_prefix.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn longest_common_prefix(strs: Vec<String>) -> String {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/find_words_that_can_be_formed_by_characters.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Solution {}
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `count_characters`
[INFO] [stdout]  --> src/find_words_that_can_be_formed_by_characters.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn count_characters(words: Vec<String>, chars: String) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `chars_count`
[INFO] [stdout]   --> src/find_words_that_can_be_formed_by_characters.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn chars_count(chars: &String) -> [u8; 26] {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/longest_palindrome.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Solution {}
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `longest_palindrome`
[INFO] [stdout]  --> src/longest_palindrome.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn longest_palindrome(s: String) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/rectangle_overlap.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Solution {}
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_rectangle_overlap`
[INFO] [stdout]  --> src/rectangle_overlap.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub fn is_rectangle_overlap(rec1: Vec<i32>, rec2: Vec<i32>) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/zui_xiao_de_kge_shu_lcof.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Solution {}
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_least_numbers`
[INFO] [stdout]  --> src/zui_xiao_de_kge_shu_lcof.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn get_least_numbers(arr: Vec<i32>, k: i32) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_least_numbers_1`
[INFO] [stdout]   --> src/zui_xiao_de_kge_shu_lcof.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn get_least_numbers_1(mut arr: Vec<i32>, k: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_least_numbers_2`
[INFO] [stdout]   --> src/zui_xiao_de_kge_shu_lcof.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn get_least_numbers_2(arr: Vec<i32>, k: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_least_numbers_1`
[INFO] [stdout]   --> src/zui_xiao_de_kge_shu_lcof.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn get_least_numbers_1(mut arr: Vec<i32>, k: i32) -> Vec<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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "8afafee9bb8e18eb877441e8b6b32834a3d039aec55737dea39d52127e707d32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8afafee9bb8e18eb877441e8b6b32834a3d039aec55737dea39d52127e707d32", kill_on_drop: false }`
[INFO] [stdout] 8afafee9bb8e18eb877441e8b6b32834a3d039aec55737dea39d52127e707d32