[INFO] updating cached repository https://github.com/QiBaobin/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] 4e31526edead0542ae06793b7851ad06d381a3b2
[INFO] testing QiBaobin/leetcode-rust against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQiBaobin%2Fleetcode-rust" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/QiBaobin/leetcode-rust on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/QiBaobin/leetcode-rust
[INFO] finished tweaking git repo https://github.com/QiBaobin/leetcode-rust
[INFO] tweaked toml for git repo https://github.com/QiBaobin/leetcode-rust written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/QiBaobin/leetcode-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 625989f9fe0e476c2caeb9370f4a429916d5f425ba818c75aa60bf2139e64d57
[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" "625989f9fe0e476c2caeb9370f4a429916d5f425ba818c75aa60bf2139e64d57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "625989f9fe0e476c2caeb9370f4a429916d5f425ba818c75aa60bf2139e64d57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "625989f9fe0e476c2caeb9370f4a429916d5f425ba818c75aa60bf2139e64d57", kill_on_drop: false }`
[INFO] [stdout] 625989f9fe0e476c2caeb9370f4a429916d5f425ba818c75aa60bf2139e64d57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2ea2b6eb1f9d52c76da9f28781bf15a5863d71a28d23dc2b6d29c8bd7e0a7f82
[INFO] running `Command { std: "docker" "start" "-a" "2ea2b6eb1f9d52c76da9f28781bf15a5863d71a28d23dc2b6d29c8bd7e0a7f82", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/solutions/letter_combinations.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | 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: `letter_combinations`
[INFO] [stdout]  --> src/solutions/letter_combinations.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn letter_combinations(digits: String) -> Vec<String> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/solutions/longest_common_prefix.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `longest_common_prefix`
[INFO] [stdout]  --> src/solutions/longest_common_prefix.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn longest_common_prefix(strs: Vec<String>) -> String {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/solutions/merge_k_lists.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/solutions/merge_two_sorted_list.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/solutions/remove_nth_from_end.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]   --> src/solutions/remove_nth_from_end.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove_nth_from_end`
[INFO] [stdout]   --> src/solutions/remove_nth_from_end.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn remove_nth_from_end(head: Option<Box<ListNode>>, n: i32) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/solutions/reverse_k_group.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/solutions/three_sum.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `three_sum`
[INFO] [stdout]  --> src/solutions/three_sum.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn three_sum(mut nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `advance`
[INFO] [stdout]   --> src/solutions/three_sum.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn advance(s: &[i32], i: &mut usize, end: usize, forward: bool) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/solutions/three_sum_closest.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `three_sum_closest`
[INFO] [stdout]  --> src/solutions/three_sum_closest.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn three_sum_closest(mut nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add`
[INFO] [stdout]   --> src/solutions/three_sum_closest.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn add(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sub`
[INFO] [stdout]   --> src/solutions/three_sum_closest.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn sub(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `Command { std: "docker" "inspect" "2ea2b6eb1f9d52c76da9f28781bf15a5863d71a28d23dc2b6d29c8bd7e0a7f82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ea2b6eb1f9d52c76da9f28781bf15a5863d71a28d23dc2b6d29c8bd7e0a7f82", kill_on_drop: false }`
[INFO] [stdout] 2ea2b6eb1f9d52c76da9f28781bf15a5863d71a28d23dc2b6d29c8bd7e0a7f82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 842241daa132711a19e17d00ead401ab035faa30acc42fd3e73546bb271d052b
[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" "842241daa132711a19e17d00ead401ab035faa30acc42fd3e73546bb271d052b", kill_on_drop: false }`
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/solutions/letter_combinations.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `letter_combinations`
[INFO] [stdout]  --> src/solutions/letter_combinations.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn letter_combinations(digits: String) -> Vec<String> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/solutions/longest_common_prefix.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `longest_common_prefix`
[INFO] [stdout]  --> src/solutions/longest_common_prefix.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn longest_common_prefix(strs: Vec<String>) -> String {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/solutions/merge_k_lists.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/solutions/merge_two_sorted_list.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/solutions/remove_nth_from_end.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]   --> src/solutions/remove_nth_from_end.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove_nth_from_end`
[INFO] [stdout]   --> src/solutions/remove_nth_from_end.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn remove_nth_from_end(head: Option<Box<ListNode>>, n: i32) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/solutions/reverse_k_group.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/solutions/three_sum.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `three_sum`
[INFO] [stdout]  --> src/solutions/three_sum.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn three_sum(mut nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `advance`
[INFO] [stdout]   --> src/solutions/three_sum.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn advance(s: &[i32], i: &mut usize, end: usize, forward: bool) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/solutions/three_sum_closest.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `three_sum_closest`
[INFO] [stdout]  --> src/solutions/three_sum_closest.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn three_sum_closest(mut nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add`
[INFO] [stdout]   --> src/solutions/three_sum_closest.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn add(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sub`
[INFO] [stdout]   --> src/solutions/three_sum_closest.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn sub(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.74s
[INFO] running `Command { std: "docker" "inspect" "842241daa132711a19e17d00ead401ab035faa30acc42fd3e73546bb271d052b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "842241daa132711a19e17d00ead401ab035faa30acc42fd3e73546bb271d052b", kill_on_drop: false }`
[INFO] [stdout] 842241daa132711a19e17d00ead401ab035faa30acc42fd3e73546bb271d052b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dcfc1d9629b854953520c5288d977b0cbb5747254aa58976ca30d5d35e97608e
[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" "dcfc1d9629b854953520c5288d977b0cbb5747254aa58976ca30d5d35e97608e", kill_on_drop: false }`
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/solutions/letter_combinations.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `letter_combinations`
[INFO] [stderr]  --> src/solutions/letter_combinations.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub fn letter_combinations(digits: String) -> Vec<String> {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/solutions/longest_common_prefix.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `longest_common_prefix`
[INFO] [stderr]  --> src/solutions/longest_common_prefix.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub fn longest_common_prefix(strs: Vec<String>) -> String {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/solutions/merge_k_lists.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/solutions/merge_two_sorted_list.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/solutions/remove_nth_from_end.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]   --> src/solutions/remove_nth_from_end.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | struct Solution;
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `remove_nth_from_end`
[INFO] [stderr]   --> src/solutions/remove_nth_from_end.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn remove_nth_from_end(head: Option<Box<ListNode>>, n: i32) -> Option<Box<ListNode>> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/solutions/reverse_k_group.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/solutions/three_sum.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `three_sum`
[INFO] [stderr]  --> src/solutions/three_sum.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub fn three_sum(mut nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `advance`
[INFO] [stderr]   --> src/solutions/three_sum.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn advance(s: &[i32], i: &mut usize, end: usize, forward: bool) {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/solutions/three_sum_closest.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `three_sum_closest`
[INFO] [stderr]  --> src/solutions/three_sum_closest.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub fn three_sum_closest(mut nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `add`
[INFO] [stderr]   --> src/solutions/three_sum_closest.rs:49:4
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn add(a: i32, b: i32) -> i32 {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sub`
[INFO] [stderr]   --> src/solutions/three_sum_closest.rs:53:4
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn sub(a: i32, b: i32) -> i32 {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stdout] running 81 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/leetcode-6f8e37bdd90fbb79
[INFO] [stdout] test solutions::add_two_numbers::tests::test_1 ... ok
[INFO] [stdout] test solutions::add_two_numbers::tests::test_3 ... ok
[INFO] [stdout] test solutions::integer_to_roman::tests::test_1 ... ok
[INFO] [stdout] test solutions::integer_to_roman::tests::test_4 ... ok
[INFO] [stdout] test solutions::letter_combinations::tests::test_1 ... ok
[INFO] [stdout] test solutions::container_with_most_water::tests::test_1 ... ok
[INFO] [stdout] test solutions::integer_to_roman::tests::test_2 ... ok
[INFO] [stdout] test solutions::add_two_numbers::tests::test_2 ... ok
[INFO] [stdout] test solutions::longest_substring::tests::test_1 ... ok
[INFO] [stdout] test solutions::integer_to_roman::tests::test_3 ... ok
[INFO] [stdout] test solutions::longest_palindromic_substring::tests::test_4 ... ok
[INFO] [stdout] test solutions::longest_palindromic_substring::tests::test_5 ... ok
[INFO] [stdout] test solutions::longest_palindromic_substring::tests::test_3 ... ok
[INFO] [stdout] test solutions::longest_substring::tests::test_2 ... ok
[INFO] [stdout] test solutions::container_with_most_water::tests::test_2 ... ok
[INFO] [stdout] test solutions::container_with_most_water::tests::test_3 ... ok
[INFO] [stdout] test solutions::longest_palindromic_substring::tests::test_1 ... ok
[INFO] [stdout] test solutions::longest_substring::tests::test_3 ... ok
[INFO] [stdout] test solutions::longest_common_prefix::tests::test_1 ... ok
[INFO] [stdout] test solutions::longest_palindromic_substring::tests::test_2 ... ok
[INFO] [stdout] test solutions::generate_parentheses::tests::test_1 ... ok
[INFO] [stdout] test solutions::letter_combinations::tests::test_2 ... ok
[INFO] [stdout] test solutions::longest_palindromic_substring::tests::test_6 ... ok
[INFO] [stdout] test solutions::median_of_two_sorted_array::tests::test_2 ... ok
[INFO] [stdout] test solutions::merge_k_lists::tests::test_1 ... ok
[INFO] [stdout] test solutions::merge_k_lists::tests::test_2 ... ok
[INFO] [stdout] test solutions::merge_k_lists::tests::test_3 ... ok
[INFO] [stdout] test solutions::merge_k_lists::tests::test_4 ... ok
[INFO] [stdout] test solutions::merge_two_sorted_list::tests::test_1 ... ok
[INFO] [stdout] test solutions::median_of_two_sorted_array::tests::test_3 ... ok
[INFO] [stdout] test solutions::longest_substring::tests::test_4 ... ok
[INFO] [stdout] test solutions::merge_two_sorted_list::tests::test_2 ... ok
[INFO] [stdout] test solutions::merge_two_sorted_list::tests::test_3 ... ok
[INFO] [stdout] test solutions::palindrome_number::tests::test_1 ... ok
[INFO] [stdout] test solutions::palindrome_number::tests::test_2 ... ok
[INFO] [stdout] test solutions::palindrome_number::tests::test_3 ... ok
[INFO] [stdout] test solutions::regex_matching::tests::test_1 ... ok
[INFO] [stdout] test solutions::regex_matching::tests::test_2 ... ok
[INFO] [stdout] test solutions::median_of_two_sorted_array::tests::test_4 ... ok
[INFO] [stdout] test solutions::regex_matching::tests::test_7 ... ok
[INFO] [stdout] test solutions::median_of_two_sorted_array::tests::test_1 ... ok
[INFO] [stdout] test solutions::regex_matching::tests::test_4 ... ok
[INFO] [stdout] test solutions::regex_matching::tests::test_5 ... ok
[INFO] [stdout] test solutions::regex_matching::tests::test_3 ... ok
[INFO] [stdout] test solutions::regex_matching::tests::test_6 ... ok
[INFO] [stdout] test solutions::reverse_integer::tests::test_4 ... ok
[INFO] [stdout] test solutions::reverse_k_group::tests::test_2 ... ok
[INFO] [stdout] test solutions::string_to_integer::tests::test_4 ... ok
[INFO] [stdout] test solutions::string_to_integer::tests::test_5 ... ok
[INFO] [stdout] test solutions::string_to_integer::tests::test_6 ... ok
[INFO] [stdout] test solutions::swap_pairs::tests::test_1 ... ok
[INFO] [stdout] test solutions::swap_pairs::tests::test_2 ... ok
[INFO] [stdout] test solutions::three_sum::tests::test_1 ... ok
[INFO] [stdout] test solutions::three_sum::tests::test_2 ... ok
[INFO] [stdout] test solutions::three_sum::tests::test_3 ... ok
[INFO] [stdout] test solutions::reverse_integer::tests::test_3 ... ok
[INFO] [stdout] test solutions::reverse_integer::tests::test_1 ... ok
[INFO] [stdout] test solutions::string_to_integer::tests::test_3 ... ok
[INFO] [stdout] test solutions::remove_nth_from_end::tests::test_2 ... ok
[INFO] [stdout] test solutions::reverse_k_group::tests::test_1 ... ok
[INFO] [stdout] test solutions::reverse_integer::tests::test_2 ... ok
[INFO] [stdout] test solutions::roman_to_int::tests::test_1 ... ok
[INFO] [stdout] test solutions::roman_to_int::tests::test_2 ... ok
[INFO] [stdout] test solutions::roman_to_int::tests::test_3 ... ok
[INFO] [stdout] test solutions::three_sum_closest::tests::test_1 ... ok
[INFO] [stdout] test solutions::roman_to_int::tests::test_4 ... ok
[INFO] [stdout] test solutions::string_to_integer::tests::test_1 ... ok
[INFO] [stdout] test solutions::string_to_integer::tests::test_2 ... ok
[INFO] [stdout] test solutions::remove_nth_from_end::tests::test_1 ... ok
[INFO] [stdout] test solutions::remove_duplicates_from_sorted::tests::test_1 ... ok
[INFO] [stdout] test solutions::remove_duplicates_from_sorted::tests::test_2 ... ok
[INFO] [stdout] test solutions::three_sum_closest::tests::test_3 ... ok
[INFO] [stdout] test solutions::three_sum::tests::test_4 ... ok
[INFO] [stdout] test solutions::three_sum_closest::tests::test_2 ... ok
[INFO] [stdout] test solutions::three_sum_closest::tests::test_4 ... ok
[INFO] [stdout] test solutions::two_sum::tests::test_2 ... ok
[INFO] [stdout] test solutions::zigzag::tests::test_2 ... ok
[INFO] [stdout] test solutions::three_sum_closest::tests::test_6 ... ok
[INFO] [stdout] test solutions::zigzag::tests::test_1 ... ok
[INFO] [stdout] test solutions::three_sum_closest::tests::test_5 ... ok
[INFO] [stdout] test solutions::two_sum::tests::test_1 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 81 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests leetcode
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dcfc1d9629b854953520c5288d977b0cbb5747254aa58976ca30d5d35e97608e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcfc1d9629b854953520c5288d977b0cbb5747254aa58976ca30d5d35e97608e", kill_on_drop: false }`
[INFO] [stdout] dcfc1d9629b854953520c5288d977b0cbb5747254aa58976ca30d5d35e97608e