[INFO] updating cached repository https://github.com/MirkoCovizzi/Leetcode-rs
[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] 1dcbc878eaa01b61dd45bb672c1d662ed37626cd
[INFO] checking MirkoCovizzi/Leetcode-rs against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMirkoCovizzi%2FLeetcode-rs" "/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/MirkoCovizzi/Leetcode-rs on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/MirkoCovizzi/Leetcode-rs
[INFO] finished tweaking git repo https://github.com/MirkoCovizzi/Leetcode-rs
[INFO] tweaked toml for git repo https://github.com/MirkoCovizzi/Leetcode-rs written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/MirkoCovizzi/Leetcode-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f9abff7064c25e9020fd32ce6c235705f512e7705ab20981da95e875f862492b
[INFO] running `"docker" "start" "-a" "f9abff7064c25e9020fd32ce6c235705f512e7705ab20981da95e875f862492b"`
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `max_profit`
[INFO] [stderr]  --> src/buy_sell_stock/mod.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn max_profit(prices: Vec<i32>) -> i32 {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `climb_stairs`
[INFO] [stderr]   --> src/climbing_stairs/mod.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn climb_stairs(n: i32) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `length_of_longest_substring`
[INFO] [stderr]   --> src/longest_substring_without_repeating_characters/mod.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `max_sub_array`
[INFO] [stderr]  --> src/maximum_subarray/mod.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn max_sub_array(nums: Vec<i32>) -> i32 {
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dfs`
[INFO] [stderr]  --> src/number_of_islands/mod.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn dfs(grid: &mut Vec<Vec<char>>, i: i32, j: i32) -> i32 {
[INFO] [stderr]   |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `num_islands`
[INFO] [stderr]   --> src/number_of_islands/mod.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub fn num_islands(grid: Vec<Vec<char>>) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/remove_nth_node_from_end_of_list/mod.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `remove_nth_from_end`
[INFO] [stderr]   --> src/remove_nth_node_from_end_of_list/mod.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn remove_nth_from_end(head: Option<Box<ListNode>>, n: i32) -> Option<Box<ListNode>> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/reverse_linked_list/mod.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `reverse_list`
[INFO] [stderr]   --> src/reverse_linked_list/mod.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn reverse_list(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_zeroes`
[INFO] [stderr]  --> src/set_matrix_zeroes/mod.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn set_zeroes(matrix: &mut Vec<Vec<i32>>) {
[INFO] [stderr]   |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `spiral_order`
[INFO] [stderr]  --> src/spiral_matrix/mod.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn spiral_order(matrix: Vec<Vec<i32>>) -> Vec<i32> {
[INFO] [stderr]   |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_sum`
[INFO] [stderr]  --> src/sum_two_integers/mod.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn get_sum(a: i32, b: i32) -> i32 {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `two_sum`
[INFO] [stderr]  --> src/two_sum/mod.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 14 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "f9abff7064c25e9020fd32ce6c235705f512e7705ab20981da95e875f862492b"`
[INFO] running `"docker" "rm" "-f" "f9abff7064c25e9020fd32ce6c235705f512e7705ab20981da95e875f862492b"`
[INFO] [stdout] f9abff7064c25e9020fd32ce6c235705f512e7705ab20981da95e875f862492b