[INFO] cloning repository https://github.com/ShAllPaNg/practices_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ShAllPaNg/practices_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShAllPaNg%2Fpractices_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShAllPaNg%2Fpractices_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e9e0252fe5341dd031854797cb387f724c0c0e8e
[INFO] checking ShAllPaNg/practices_rust against try#4907eac94165faff6c5e5e015670b1c584275f7b for pr-154149
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShAllPaNg%2Fpractices_rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ShAllPaNg/practices_rust
[INFO] finished tweaking git repo https://github.com/ShAllPaNg/practices_rust
[INFO] tweaked toml for git repo https://github.com/ShAllPaNg/practices_rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ShAllPaNg/practices_rust on toolchain 4907eac94165faff6c5e5e015670b1c584275f7b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4907eac94165faff6c5e5e015670b1c584275f7b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ShAllPaNg/practices_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4907eac94165faff6c5e5e015670b1c584275f7b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+4907eac94165faff6c5e5e015670b1c584275f7b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf5c8c37d49b551db630511207b491bbcf60ee5f205f1aced1cff008995e20b7
[INFO] running `Command { std: "docker" "start" "-a" "cf5c8c37d49b551db630511207b491bbcf60ee5f205f1aced1cff008995e20b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf5c8c37d49b551db630511207b491bbcf60ee5f205f1aced1cff008995e20b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf5c8c37d49b551db630511207b491bbcf60ee5f205f1aced1cff008995e20b7", kill_on_drop: false }`
[INFO] [stdout] cf5c8c37d49b551db630511207b491bbcf60ee5f205f1aced1cff008995e20b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+4907eac94165faff6c5e5e015670b1c584275f7b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 145309d96fa3b0c29ca41d6b55762f81f029e2f8e631746ee42f7e582ef5d15b
[INFO] running `Command { std: "docker" "start" "-a" "145309d96fa3b0c29ca41d6b55762f81f029e2f8e631746ee42f7e582ef5d15b", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode_00006 v0.1.0 (/opt/rustwide/workdir/leetcode_00006)
[INFO] [stderr]     Checking leetcode_00031 v0.1.0 (/opt/rustwide/workdir/leetcode_00031)
[INFO] [stderr]     Checking leetcode_00004 v0.1.0 (/opt/rustwide/workdir/leetcode_00004)
[INFO] [stderr]     Checking leetcode_00023 v0.1.0 (/opt/rustwide/workdir/leetcode_00023)
[INFO] [stderr]     Checking leetcode_00024 v0.1.0 (/opt/rustwide/workdir/leetcode_00024)
[INFO] [stderr]     Checking leetcode_00007 v0.1.0 (/opt/rustwide/workdir/leetcode_00007)
[INFO] [stderr]     Checking leetcode_00002 v0.1.0 (/opt/rustwide/workdir/leetcode_00002)
[INFO] [stderr]     Checking leetcode_00016 v0.1.0 (/opt/rustwide/workdir/leetcode_00016)
[INFO] [stderr]     Checking leetcode_00022 v0.1.0 (/opt/rustwide/workdir/leetcode_00022)
[INFO] [stderr]     Checking leetcode_00029 v0.1.0 (/opt/rustwide/workdir/leetcode_00029)
[INFO] [stderr]     Checking leetcode_00014 v0.1.0 (/opt/rustwide/workdir/leetcode_00014)
[INFO] [stderr]     Checking leetcode_00015 v0.1.0 (/opt/rustwide/workdir/leetcode_00015)
[INFO] [stderr]     Checking leetcode_00021 v0.1.0 (/opt/rustwide/workdir/leetcode_00021)
[INFO] [stderr]     Checking leetcode_00013 v0.1.0 (/opt/rustwide/workdir/leetcode_00013)
[INFO] [stdout] warning: unused import: `i32::MAX`
[INFO] [stdout]  --> leetcode_00004/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     i32::MAX,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> leetcode_00029/src/main.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut divisor = divisor;
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> leetcode_00029/src/main.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `divide` is never used
[INFO] [stdout]  --> leetcode_00029/src/main.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn divide(dividend: i32, divisor: i32) -> i32 {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `new_value` is never read
[INFO] [stdout]   --> leetcode_00002/src/main.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let (mut new_value, mut increase) = (0, 0);
[INFO] [stdout]    |              ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> leetcode_00002/src/main.rs:28:16
[INFO] [stdout]    |
[INFO] [stdout] 28 |         #[warn(unused_assignments)]
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> leetcode_00002/src/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 13 |     #[inline]
[INFO] [stdout] 14 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> leetcode_00002/src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Solution {}
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `add_two_numbers` is never used
[INFO] [stdout]   --> leetcode_00002/src/main.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 22 |     pub fn add_two_numbers(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking leetcode_00010 v0.1.0 (/opt/rustwide/workdir/leetcode_00010)
[INFO] [stderr]     Checking leetcode_00005 v0.1.0 (/opt/rustwide/workdir/leetcode_00005)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> leetcode_00023/src/main.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut lists = lists;
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> leetcode_00023/src/main.rs:149:24
[INFO] [stdout]     |
[INFO] [stdout] 149 |         while let Some(mut x) = heap.pop() {
[INFO] [stdout]     |                        ----^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution2` is never constructed
[INFO] [stdout]    --> leetcode_00023/src/main.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 113 | struct Solution2 {}
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `merge_k_lists` is never used
[INFO] [stdout]    --> leetcode_00023/src/main.rs:115:12
[INFO] [stdout]     |
[INFO] [stdout] 114 | impl Solution2 {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 115 |     pub fn merge_k_lists(lists: Vec<Option<Box<ListNode>>>) -> Option<Box<ListNode>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution3` is never constructed
[INFO] [stdout]    --> leetcode_00023/src/main.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 136 | struct Solution3 {}
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `merge_k_lists` is never used
[INFO] [stdout]    --> leetcode_00023/src/main.rs:138:12
[INFO] [stdout]     |
[INFO] [stdout] 137 | impl Solution3 {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 138 |     pub fn merge_k_lists(lists: Vec<Option<Box<ListNode>>>) -> Option<Box<ListNode>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> leetcode_00023/src/main.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut lists = lists;
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution2` is never constructed
[INFO] [stdout]   --> leetcode_00004/src/main.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct Solution2 {}
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `find_median_sorted_arrays` and `find_kth_circle` are never used
[INFO] [stdout]   --> leetcode_00004/src/main.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 67 | impl Solution2 {
[INFO] [stdout]    | -------------- associated functions in this implementation
[INFO] [stdout] 68 |     pub fn find_median_sorted_arrays(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn find_kth_circle(nums1: &Vec<i32>, nums2: &Vec<i32>, k: usize) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking leetcode_00003 v0.1.0 (/opt/rustwide/workdir/leetcode_00003)
[INFO] [stderr]     Checking leetcode_00009 v0.1.0 (/opt/rustwide/workdir/leetcode_00009)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> leetcode_00023/src/main.rs:149:24
[INFO] [stdout]     |
[INFO] [stdout] 149 |         while let Some(mut x) = heap.pop() {
[INFO] [stdout]     |                        ----^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution2` is never constructed
[INFO] [stdout]    --> leetcode_00023/src/main.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 113 | struct Solution2 {}
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `merge_k_lists` is never used
[INFO] [stdout]    --> leetcode_00023/src/main.rs:115:12
[INFO] [stdout]     |
[INFO] [stdout] 114 | impl Solution2 {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 115 |     pub fn merge_k_lists(lists: Vec<Option<Box<ListNode>>>) -> Option<Box<ListNode>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution3` is never constructed
[INFO] [stdout]    --> leetcode_00023/src/main.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 136 | struct Solution3 {}
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `merge_k_lists` is never used
[INFO] [stdout]    --> leetcode_00023/src/main.rs:138:12
[INFO] [stdout]     |
[INFO] [stdout] 137 | impl Solution3 {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 138 |     pub fn merge_k_lists(lists: Vec<Option<Box<ListNode>>>) -> Option<Box<ListNode>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking leetcode_00008 v0.1.0 (/opt/rustwide/workdir/leetcode_00008)
[INFO] [stdout] warning: struct `Solution2` is never constructed
[INFO] [stdout]   --> leetcode_00021/src/main.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 | struct Solution2 {}
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `merge_two_lists` is never used
[INFO] [stdout]   --> leetcode_00021/src/main.rs:94:12
[INFO] [stdout]    |
[INFO] [stdout] 93 | impl Solution2 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 94 |     pub fn merge_two_lists(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking leetcode_00017 v0.1.0 (/opt/rustwide/workdir/leetcode_00017)
[INFO] [stderr]     Checking leetcode_00025 v0.1.0 (/opt/rustwide/workdir/leetcode_00025)
[INFO] [stderr]     Checking leetcode_00026 v0.1.0 (/opt/rustwide/workdir/leetcode_00026)
[INFO] [stdout] warning: value assigned to `new_value` is never read
[INFO] [stdout]   --> leetcode_00002/src/main.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let (mut new_value, mut increase) = (0, 0);
[INFO] [stdout]    |              ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> leetcode_00002/src/main.rs:28:16
[INFO] [stdout]    |
[INFO] [stdout] 28 |         #[warn(unused_assignments)]
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> leetcode_00002/src/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 13 |     #[inline]
[INFO] [stdout] 14 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> leetcode_00002/src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Solution {}
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `add_two_numbers` is never used
[INFO] [stdout]   --> leetcode_00002/src/main.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 22 |     pub fn add_two_numbers(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking leetcode_00018 v0.1.0 (/opt/rustwide/workdir/leetcode_00018)
[INFO] [stderr]     Checking leetcode_00001 v0.1.0 (/opt/rustwide/workdir/leetcode_00001)
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> leetcode_00009/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking leetcode_00019 v0.1.0 (/opt/rustwide/workdir/leetcode_00019)
[INFO] [stderr]     Checking leetcode_00027 v0.1.0 (/opt/rustwide/workdir/leetcode_00027)
[INFO] [stderr]     Checking leetcode_00030 v0.1.0 (/opt/rustwide/workdir/leetcode_00030)
[INFO] [stderr]     Checking leetcode_00087 v0.1.0 (/opt/rustwide/workdir/leetcode_00087)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> leetcode_00025/src/main.rs:105:10
[INFO] [stdout]     |
[INFO] [stdout] 105 |     ) -> ((Option<Box<ListNode>>, Option<Box<ListNode>>, bool)) {
[INFO] [stdout]     |          ^                                                    ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 105 -     ) -> ((Option<Box<ListNode>>, Option<Box<ListNode>>, bool)) {
[INFO] [stdout] 105 +     ) -> (Option<Box<ListNode>>, Option<Box<ListNode>>, bool)  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking leetcode_00020 v0.1.0 (/opt/rustwide/workdir/leetcode_00020)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> leetcode_00025/src/main.rs:105:10
[INFO] [stdout]     |
[INFO] [stdout] 105 |     ) -> ((Option<Box<ListNode>>, Option<Box<ListNode>>, bool)) {
[INFO] [stdout]     |          ^                                                    ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 105 -     ) -> ((Option<Box<ListNode>>, Option<Box<ListNode>>, bool)) {
[INFO] [stdout] 105 +     ) -> (Option<Box<ListNode>>, Option<Box<ListNode>>, bool)  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> leetcode_00025/src/main.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Solution {}
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `reverse_k_group` is never used
[INFO] [stdout]   --> leetcode_00025/src/main.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 58 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 59 |     pub fn reverse_k_group(head: Option<Box<ListNode>>, k: i32) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution1` is never constructed
[INFO] [stdout]   --> leetcode_00026/src/main.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Solution1 {}
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `remove_duplicates` is never used
[INFO] [stdout]   --> leetcode_00026/src/main.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution1 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn remove_duplicates(nums: &mut Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> leetcode_00029/src/main.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut divisor = divisor;
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> leetcode_00029/src/main.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `divide` is never used
[INFO] [stdout]  --> leetcode_00029/src/main.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn divide(dividend: i32, divisor: i32) -> i32 {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> leetcode_00009/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking leetcode_00012 v0.1.0 (/opt/rustwide/workdir/leetcode_00012)
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> leetcode_00030/src/main.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn find_substring(s: String, words: Vec<String>) -> Vec<i32> {
[INFO] [stdout]   |                           ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `words`
[INFO] [stdout]  --> leetcode_00030/src/main.rs:8:38
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn find_substring(s: String, words: Vec<String>) -> Vec<i32> {
[INFO] [stdout]   |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_words`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> leetcode_00030/src/main.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `find_substring` is never used
[INFO] [stdout]  --> leetcode_00030/src/main.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 8 |     pub fn find_substring(s: String, words: Vec<String>) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> leetcode_00027/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mem::swap`
[INFO] [stdout]  --> leetcode_00027/src/main.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{mem::swap, usize};
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> leetcode_00025/src/main.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Solution {}
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `reverse_k_group` is never used
[INFO] [stdout]   --> leetcode_00025/src/main.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 58 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 59 |     pub fn reverse_k_group(head: Option<Box<ListNode>>, k: i32) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> leetcode_00027/src/main.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Solution {}
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `remove_element` is never used
[INFO] [stdout]   --> leetcode_00027/src/main.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn remove_element(nums: &mut Vec<i32>, val: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution1` is never constructed
[INFO] [stdout]   --> leetcode_00027/src/main.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct Solution1 {}
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `remove_element` is never used
[INFO] [stdout]   --> leetcode_00027/src/main.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl Solution1 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 38 |     pub fn remove_element(nums: &mut Vec<i32>, val: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking leetcode_00028 v0.1.0 (/opt/rustwide/workdir/leetcode_00028)
[INFO] [stdout] warning: unused import: `i32::MAX`
[INFO] [stdout]  --> leetcode_00004/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     i32::MAX,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking leetcode_00032 v0.1.0 (/opt/rustwide/workdir/leetcode_00032)
[INFO] [stdout] warning: struct `Solution2` is never constructed
[INFO] [stdout]   --> leetcode_00004/src/main.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct Solution2 {}
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter`
[INFO] [stdout]  --> leetcode_00087/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::iter;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `find_median_sorted_arrays` and `find_kth_circle` are never used
[INFO] [stdout]   --> leetcode_00004/src/main.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 67 | impl Solution2 {
[INFO] [stdout]    | -------------- associated functions in this implementation
[INFO] [stdout] 68 |     pub fn find_median_sorted_arrays(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn find_kth_circle(nums1: &Vec<i32>, nums2: &Vec<i32>, k: usize) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> leetcode_00087/src/main.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Solution {}
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `is_scramble`, `recursive`, and `same_chars` are never used
[INFO] [stdout]   --> leetcode_00087/src/main.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 20 |     pub fn is_scramble(s1: String, s2: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn recursive(
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn same_chars(s1: &[u8], s2: &[u8]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking leetcode_00011 v0.1.0 (/opt/rustwide/workdir/leetcode_00011)
[INFO] [stdout] warning: struct `Solution1` is never constructed
[INFO] [stdout]   --> leetcode_00028/src/main.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | struct Solution1 {}
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `str_str` is never used
[INFO] [stdout]   --> leetcode_00028/src/main.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 63 | impl Solution1 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 64 |     pub fn str_str(haystack: String, needle: String) -> i32 {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution1` is never constructed
[INFO] [stdout]   --> leetcode_00028/src/main.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | struct Solution1 {}
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `str_str` is never used
[INFO] [stdout]   --> leetcode_00028/src/main.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 63 | impl Solution1 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 64 |     pub fn str_str(haystack: String, needle: String) -> i32 {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter`
[INFO] [stdout]  --> leetcode_00087/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::iter;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> leetcode_00027/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> leetcode_00087/src/main.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Solution {}
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `is_scramble`, `recursive`, and `same_chars` are never used
[INFO] [stdout]   --> leetcode_00087/src/main.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 20 |     pub fn is_scramble(s1: String, s2: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn recursive(
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn same_chars(s1: &[u8], s2: &[u8]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mem::swap`
[INFO] [stdout]  --> leetcode_00027/src/main.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{mem::swap, usize};
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> leetcode_00027/src/main.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Solution {}
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `remove_element` is never used
[INFO] [stdout]   --> leetcode_00027/src/main.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn remove_element(nums: &mut Vec<i32>, val: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution1` is never constructed
[INFO] [stdout]   --> leetcode_00027/src/main.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct Solution1 {}
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `remove_element` is never used
[INFO] [stdout]   --> leetcode_00027/src/main.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl Solution1 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 38 |     pub fn remove_element(nums: &mut Vec<i32>, val: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution1` is never constructed
[INFO] [stdout]   --> leetcode_00026/src/main.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Solution1 {}
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `remove_duplicates` is never used
[INFO] [stdout]   --> leetcode_00026/src/main.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution1 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn remove_duplicates(nums: &mut Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `max` and `min`
[INFO] [stdout]  --> leetcode_00011/src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::{max, min};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `max` and `min`
[INFO] [stdout]  --> leetcode_00011/src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::{max, min};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> leetcode_00030/src/main.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn find_substring(s: String, words: Vec<String>) -> Vec<i32> {
[INFO] [stdout]   |                           ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `words`
[INFO] [stdout]  --> leetcode_00030/src/main.rs:8:38
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn find_substring(s: String, words: Vec<String>) -> Vec<i32> {
[INFO] [stdout]   |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_words`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> leetcode_00030/src/main.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `find_substring` is never used
[INFO] [stdout]  --> leetcode_00030/src/main.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 8 |     pub fn find_substring(s: String, words: Vec<String>) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution2` is never constructed
[INFO] [stdout]   --> leetcode_00021/src/main.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 | struct Solution2 {}
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `merge_two_lists` is never used
[INFO] [stdout]   --> leetcode_00021/src/main.rs:94:12
[INFO] [stdout]    |
[INFO] [stdout] 93 | impl Solution2 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 94 |     pub fn merge_two_lists(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "145309d96fa3b0c29ca41d6b55762f81f029e2f8e631746ee42f7e582ef5d15b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "145309d96fa3b0c29ca41d6b55762f81f029e2f8e631746ee42f7e582ef5d15b", kill_on_drop: false }`
[INFO] [stdout] 145309d96fa3b0c29ca41d6b55762f81f029e2f8e631746ee42f7e582ef5d15b