[INFO] updating cached repository https://github.com/magurotuna/leetcode-rust
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 25fe43e23160883aa89080d8558347f027e065a4
[INFO] checking magurotuna/leetcode-rust against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmagurotuna%2Fleetcode-rust" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/magurotuna/leetcode-rust on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/magurotuna/leetcode-rust
[INFO] finished tweaking git repo https://github.com/magurotuna/leetcode-rust
[INFO] tweaked toml for git repo https://github.com/magurotuna/leetcode-rust written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/magurotuna/leetcode-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "/opt/rustwide/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3163dae456664f108f556b62f4273f1290b8aaa4fdaa10032223131b0a002928
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "3163dae456664f108f556b62f4273f1290b8aaa4fdaa10032223131b0a002928"`
[INFO] [stderr]     Checking leetcode-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: struct is never constructed: `UndergroundSystem`
[INFO] [stderr]  --> src/bin/1396.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct UndergroundSystem {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/bin/1396.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn new() -> Self {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `check_in`
[INFO] [stderr]   --> src/bin/1396.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn check_in(&mut self, id: i32, station_name: String, t: i32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `check_out`
[INFO] [stderr]   --> src/bin/1396.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn check_out(&mut self, id: i32, station_name: String, t: i32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_average_time`
[INFO] [stderr]   --> src/bin/1396.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     fn get_average_time(&self, start_station: String, end_station: String) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `valley` is never read
[INFO] [stderr]  --> src/bin/122.rs:9:17
[INFO] [stderr]   |
[INFO] [stderr] 9 |         let mut valley = prices[0];
[INFO] [stderr]   |                 ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `peek` is never read
[INFO] [stderr]   --> src/bin/122.rs:10:17
[INFO] [stderr]    |
[INFO] [stderr] 10 |         let mut peek = prices[0];
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `valley` is never read
[INFO] [stderr]   --> src/bin/122.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |             valley = peek;
[INFO] [stderr]    |             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/122.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `max_profit`
[INFO] [stderr]  --> src/bin/122.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn max_profit(prices: Vec<i32>) -> i32 {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `simplest_max_profit`
[INFO] [stderr]   --> src/bin/122.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn simplest_max_profit(prices: Vec<i32>) -> i32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `brute_force_max_profit`
[INFO] [stderr]   --> src/bin/122.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn brute_force_max_profit(prices: Vec<i32>) -> i32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calc`
[INFO] [stderr]   --> src/bin/122.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn calc(prices: &[i32], s: usize) -> i32 {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/50.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |         let mut even_n = if is_odd { n - 1 } else { n };
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0601]: `main` function not found in crate `1406`
[INFO] [stderr]  --> src/bin/1406.rs:1:9
[INFO] [stderr]   |
[INFO] [stderr] 1 | // TODO
[INFO] [stderr]   |         ^ consider adding a `main` function to `src/bin/1406.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `leetcode-rust`.
[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] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/323.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `count_components`
[INFO] [stderr]  --> src/bin/323.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn count_components(n: i32, edges: Vec<Vec<i32>>) -> i32 {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dfs`
[INFO] [stderr]   --> src/bin/323.rs:28:4
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn dfs(visited: &mut std::collections::HashSet<usize>, links: &Vec<Vec<usize>>, start: usize) {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]   --> src/bin/111.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 21 | struct Solution;
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `min_depth`
[INFO] [stderr]   --> src/bin/111.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn min_depth(root: Option<Rc<RefCell<TreeNode>>>) -> i32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_node`
[INFO] [stderr]   --> src/bin/111.rs:57:4
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn make_node(val: i32) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_node_with`
[INFO] [stderr]   --> src/bin/111.rs:61:4
[INFO] [stderr]    |
[INFO] [stderr] 61 | fn make_node_with(
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/735.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `asteroid_collision`
[INFO] [stderr]  --> src/bin/735.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn asteroid_collision(asteroids: Vec<i32>) -> Vec<i32> {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1403.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `min_subsequence`
[INFO] [stderr]  --> src/bin/1403.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn min_subsequence(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/bin/146.rs:51:23
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn put(&mut self, key: i32, value: i32) {
[INFO] [stderr]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/bin/146.rs:51:33
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn put(&mut self, key: i32, value: i32) {
[INFO] [stderr]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `LRUCache`
[INFO] [stderr]   --> src/bin/146.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct LRUCache {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/648.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `replace_words`
[INFO] [stderr]  --> src/bin/648.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn replace_words(dict: Vec<String>, sentence: String) -> String {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/bin/146.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn new(capacity: i32) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/bin/146.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn get(&mut self, key: i32) -> i32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `put`
[INFO] [stderr]   --> src/bin/146.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn put(&mut self, key: i32, value: i32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `naive_add_binary`
[INFO] [stderr]   --> src/bin/67.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn naive_add_binary(a: String, b: String) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `iter`
[INFO] [stderr]   --> src/bin/394.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut iter = substr.into_iter();
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `end_index` is never read
[INFO] [stderr]   --> src/bin/394.rs:32:21
[INFO] [stderr]    |
[INFO] [stderr] 32 |             let mut end_index = index;
[INFO] [stderr]    |                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/394.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut iter = substr.into_iter();
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1397.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_good_strings`
[INFO] [stderr]  --> src/bin/1397.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub fn find_good_strings(n: i32, s1: String, s2: String, evil: String) -> i32 {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `MOD` should have a snake case name
[INFO] [stderr]  --> src/bin/1397.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |         let MOD = 1_000_000_007;
[INFO] [stderr]   |             ^^^ help: convert the identifier to snake case: `mod`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "3163dae456664f108f556b62f4273f1290b8aaa4fdaa10032223131b0a002928"`
[INFO] running `"docker" "rm" "-f" "3163dae456664f108f556b62f4273f1290b8aaa4fdaa10032223131b0a002928"`
[INFO] [stdout] 3163dae456664f108f556b62f4273f1290b8aaa4fdaa10032223131b0a002928