[INFO] cloning repository https://github.com/NiuHaihang/rust_algorithm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NiuHaihang/rust_algorithm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiuHaihang%2Frust_algorithm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiuHaihang%2Frust_algorithm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9d3d5e35051855b4dcc375f69a03bd6278102353
[INFO] checking NiuHaihang/rust_algorithm against try#0bdee9e879c87b7211d316e9152109cfd46c576b for pr-150097
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiuHaihang%2Frust_algorithm" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/NiuHaihang/rust_algorithm
[INFO] finished tweaking git repo https://github.com/NiuHaihang/rust_algorithm
[INFO] tweaked toml for git repo https://github.com/NiuHaihang/rust_algorithm written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/NiuHaihang/rust_algorithm on toolchain 0bdee9e879c87b7211d316e9152109cfd46c576b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/NiuHaihang/rust_algorithm 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" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking NiuHaihang/rust_algorithm against try#0bdee9e879c87b7211d316e9152109cfd46c576b for pr-150097
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiuHaihang%2Frust_algorithm" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/NiuHaihang/rust_algorithm
[INFO] finished tweaking git repo https://github.com/NiuHaihang/rust_algorithm
[INFO] tweaked toml for git repo https://github.com/NiuHaihang/rust_algorithm written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/NiuHaihang/rust_algorithm on toolchain 0bdee9e879c87b7211d316e9152109cfd46c576b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/NiuHaihang/rust_algorithm 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" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf7f44e752cd316c732a95f4281a140c9e3e9bd1c73d9eab509fe98f0c97cebd
[INFO] running `Command { std: "docker" "start" "-a" "cf7f44e752cd316c732a95f4281a140c9e3e9bd1c73d9eab509fe98f0c97cebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf7f44e752cd316c732a95f4281a140c9e3e9bd1c73d9eab509fe98f0c97cebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf7f44e752cd316c732a95f4281a140c9e3e9bd1c73d9eab509fe98f0c97cebd", kill_on_drop: false }`
[INFO] [stdout] cf7f44e752cd316c732a95f4281a140c9e3e9bd1c73d9eab509fe98f0c97cebd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f743c17e528962de24a49db090d7962cd570c069aaf408e4829705aad7e490b
[INFO] running `Command { std: "docker" "start" "-a" "6f743c17e528962de24a49db090d7962cd570c069aaf408e4829705aad7e490b", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> src/longest_consecutive.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     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: `crate::find_target_sum_ways::target_sum::find_target_sum_ways`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::find_target_sum_ways::target_sum::find_target_sum_ways;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::good_indices::good::good_indices`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::good_indices::good::good_indices;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::is_palindrome::palindrome::is_palindrome`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::is_palindrome::palindrome::is_palindrome;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::length_of_lis::lis::length_of_lis`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use crate::length_of_lis::lis::length_of_lis;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::longest_consecutive::longest::longest_consecutive`
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use crate::longest_consecutive::longest::longest_consecutive;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::palindrome::palindrome::make_smallest_palindrome`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use crate::palindrome::palindrome::make_smallest_palindrome;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::two_sum::sum::two_sum`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::two_sum::sum::two_sum;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> src/longest_consecutive.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     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: `crate::find_target_sum_ways::target_sum::find_target_sum_ways`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::find_target_sum_ways::target_sum::find_target_sum_ways;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::good_indices::good::good_indices`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::good_indices::good::good_indices;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::is_palindrome::palindrome::is_palindrome`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::is_palindrome::palindrome::is_palindrome;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::length_of_lis::lis::length_of_lis`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use crate::length_of_lis::lis::length_of_lis;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::longest_consecutive::longest::longest_consecutive`
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use crate::longest_consecutive::longest::longest_consecutive;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::palindrome::palindrome::make_smallest_palindrome`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use crate::palindrome::palindrome::make_smallest_palindrome;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::two_sum::sum::two_sum`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::two_sum::sum::two_sum;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/find_target_sum_ways.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |         let mut sum = nums.iter().sum::<i32>();
[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]  --> src/find_target_sum_ways.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |         let mut sum = nums.iter().sum::<i32>();
[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]   --> src/length_of_lis.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut i = 0;
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/length_of_lis.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut j = 0;
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/length_of_lis.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut i = 0;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/length_of_lis.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut j = 0;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/length_of_lis.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut i = 0;
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/length_of_lis.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut j = 0;
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/length_of_lis.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut i = 0;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/length_of_lis.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut j = 0;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/longest_consecutive.rs:18:25
[INFO] [stdout]    |
[INFO] [stdout] 18 |                     let mut j = uf.find(mp.get(&(num - 1)).copied().unwrap());
[INFO] [stdout]    |                         ----^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/longest_consecutive.rs:25:25
[INFO] [stdout]    |
[INFO] [stdout] 25 |                     let mut j = uf.find(mp.get(&(num + 1)).copied().unwrap());
[INFO] [stdout]    |                         ----^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i32`
[INFO] [stdout]   --> src/longest_consecutive.rs:13:23
[INFO] [stdout]    |
[INFO] [stdout] 13 |                 Some(&i32) => continue,
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i32`
[INFO] [stdout]   --> src/longest_consecutive.rs:17:23
[INFO] [stdout]    |
[INFO] [stdout] 17 |                 Some(&i32) => {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/longest_consecutive.rs:18:25
[INFO] [stdout]    |
[INFO] [stdout] 18 |                     let mut j = uf.find(mp.get(&(num - 1)).copied().unwrap());
[INFO] [stdout]    |                         ----^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i32`
[INFO] [stdout]   --> src/longest_consecutive.rs:24:23
[INFO] [stdout]    |
[INFO] [stdout] 24 |                 Some(&i32) => {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/longest_consecutive.rs:25:25
[INFO] [stdout]    |
[INFO] [stdout] 25 |                     let mut j = uf.find(mp.get(&(num + 1)).copied().unwrap());
[INFO] [stdout]    |                         ----^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/longest_consecutive.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 |         for (i, size) in uf.size.iter().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i32`
[INFO] [stdout]   --> src/longest_consecutive.rs:13:23
[INFO] [stdout]    |
[INFO] [stdout] 13 |                 Some(&i32) => continue,
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i32`
[INFO] [stdout]   --> src/longest_consecutive.rs:17:23
[INFO] [stdout]    |
[INFO] [stdout] 17 |                 Some(&i32) => {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i32`
[INFO] [stdout]   --> src/longest_consecutive.rs:24:23
[INFO] [stdout]    |
[INFO] [stdout] 24 |                 Some(&i32) => {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/longest_consecutive.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 |         for (i, size) in uf.size.iter().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/longest_consecutive.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut size: Vec<i32> = vec![1; n as usize];
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/longest_consecutive.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut size: Vec<i32> = vec![1; n as usize];
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_target_sum_ways` is never used
[INFO] [stdout]  --> src/find_target_sum_ways.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn find_target_sum_ways(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_target_sum_ways` is never used
[INFO] [stdout]  --> src/find_target_sum_ways.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn find_target_sum_ways(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `good_indices` is never used
[INFO] [stdout]  --> src/good_indices.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn good_indices(nums: Vec<i32>, k: i32) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `good_indices` is never used
[INFO] [stdout]  --> src/good_indices.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn good_indices(nums: Vec<i32>, k: i32) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `good_indices_bing` is never used
[INFO] [stdout]   --> src/good_indices.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn good_indices_bing(nums: Vec<i32>, k: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `good_indices_bing` is never used
[INFO] [stdout]   --> src/good_indices.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn good_indices_bing(nums: Vec<i32>, k: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_palindrome` is never used
[INFO] [stdout]  --> src/is_palindrome.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn is_palindrome(mut x: i32) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_palindrome` is never used
[INFO] [stdout]  --> src/is_palindrome.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn is_palindrome(mut x: i32) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_lis` is never used
[INFO] [stdout]  --> src/length_of_lis.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub fn length_of_lis(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_lis` is never used
[INFO] [stdout]  --> src/length_of_lis.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub fn length_of_lis(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_consecutive1` is never used
[INFO] [stdout]  --> src/longest_consecutive.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn longest_consecutive1(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_consecutive1` is never used
[INFO] [stdout]  --> src/longest_consecutive.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn longest_consecutive1(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_consecutive` is never used
[INFO] [stdout]   --> src/longest_consecutive.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn longest_consecutive(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_consecutive` is never used
[INFO] [stdout]   --> src/longest_consecutive.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn longest_consecutive(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UF` is never constructed
[INFO] [stdout]   --> src/longest_consecutive.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     struct UF {
[INFO] [stdout]    |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UF` is never constructed
[INFO] [stdout]   --> src/longest_consecutive.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     struct UF {
[INFO] [stdout]    |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_uf` is never used
[INFO] [stdout]   --> src/longest_consecutive.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn build_uf(n: i32) -> UF {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_uf` is never used
[INFO] [stdout]   --> src/longest_consecutive.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn build_uf(n: i32) -> UF {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `find` and `union` are never used
[INFO] [stdout]   --> src/longest_consecutive.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 74 |     impl UF {
[INFO] [stdout]    |     ------- methods in this implementation
[INFO] [stdout] 75 |         fn find(&mut self, i: i32) -> i32 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 |         fn union(&mut self, i: i32, j: i32) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `find` and `union` are never used
[INFO] [stdout]   --> src/longest_consecutive.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 74 |     impl UF {
[INFO] [stdout]    |     ------- methods in this implementation
[INFO] [stdout] 75 |         fn find(&mut self, i: i32) -> i32 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 |         fn union(&mut self, i: i32, j: i32) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_smallest_palindrome` is never used
[INFO] [stdout]  --> src/palindrome.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn make_smallest_palindrome(s: String) -> String {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_smallest_palindrome` is never used
[INFO] [stdout]  --> src/palindrome.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn make_smallest_palindrome(s: String) -> String {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_smallest_palindrome1` is never used
[INFO] [stdout]  --> src/palindrome.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn make_smallest_palindrome1(s: String) -> String {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_smallest_palindrome1` is never used
[INFO] [stdout]  --> src/palindrome.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn make_smallest_palindrome1(s: String) -> String {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `two_sum` is never used
[INFO] [stdout]  --> src/two_sum.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `two_sum` is never used
[INFO] [stdout]  --> src/two_sum.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "6f743c17e528962de24a49db090d7962cd570c069aaf408e4829705aad7e490b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f743c17e528962de24a49db090d7962cd570c069aaf408e4829705aad7e490b", kill_on_drop: false }`
[INFO] [stdout] 6f743c17e528962de24a49db090d7962cd570c069aaf408e4829705aad7e490b