[INFO] cloning repository https://github.com/PhoenixGS/RustOJ
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PhoenixGS/RustOJ" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhoenixGS%2FRustOJ", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 751f8af95d45081f6d0c9d856f2ca10854964607
[INFO] checking PhoenixGS/RustOJ against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhoenixGS%2FRustOJ" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/PhoenixGS/RustOJ
[INFO] finished tweaking git repo https://github.com/PhoenixGS/RustOJ
[INFO] tweaked toml for git repo https://github.com/PhoenixGS/RustOJ written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/PhoenixGS/RustOJ on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/PhoenixGS/RustOJ 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/structs/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::error::Error;
[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: `actix_web::web::JsonBody`
[INFO] [stdout]  --> src/client.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use actix_web::web::JsonBody;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HttpRequest`, `post`, and `web`
[INFO] [stdout]  --> src/client.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use actix_web::{post, web, HttpRequest};
[INFO] [stdout]   |                 ^^^^  ^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Command`
[INFO] [stdout]   --> src/client.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::process::Command;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]   --> src/client.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     while true {
[INFO] [stdout]    |     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/structs/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::error::Error;
[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: `actix_web::web::JsonBody`
[INFO] [stdout]  --> src/client.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use actix_web::web::JsonBody;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HttpRequest`, `post`, and `web`
[INFO] [stdout]  --> src/client.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use actix_web::{post, web, HttpRequest};
[INFO] [stdout]   |                 ^^^^  ^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Command`
[INFO] [stdout]   --> src/client.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::process::Command;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]   --> src/client.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     while true {
[INFO] [stdout]    |     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/structs/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::error::Error;
[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: `HttpRequest`, `HttpResponse`, and `http::StatusCode`
[INFO] [stdout]  --> src/main.rs:4:86
[INFO] [stdout]   |
[INFO] [stdout] 4 | use actix_web::{get, put, middleware::Logger, post, web, App, HttpServer, Responder, HttpRequest, HttpResponse, http::StatusCode};
[INFO] [stdout]   |                                                                                      ^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `i64::MAX` and `path::PathBuf`
[INFO] [stdout]  --> src/main.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::{path::PathBuf, i64::MAX};
[INFO] [stdout]   |           ^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `mem::swap` and `self`
[INFO] [stdout]   --> src/main.rs:11:34
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::{fs::{self, File}, io::{self, Write}, vec, mem::swap, cmp::Ordering};
[INFO] [stdout]    |                                  ^^^^               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdio`
[INFO] [stdout]   --> src/main.rs:12:29
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::process::{Command, Stdio};
[INFO] [stdout]    |                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wait_timeout::ChildExt`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use wait_timeout::ChildExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FixedOffset`, `NaiveDate`, and `offset::LocalResult`
[INFO] [stdout]   --> src/main.rs:17:31
[INFO] [stdout]    |
[INFO] [stdout] 17 | use chrono::{Local, DateTime, FixedOffset, NaiveDate, prelude::*, offset::LocalResult};
[INFO] [stdout]    |                               ^^^^^^^^^^^  ^^^^^^^^^              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `latest` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:577:5
[INFO] [stdout]     |
[INFO] [stdout] 577 |     latest,
[INFO] [stdout]     |     ^^^^^^ help: convert the identifier to upper camel case: `Latest`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `highest` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:578:5
[INFO] [stdout]     |
[INFO] [stdout] 578 |     highest,
[INFO] [stdout]     |     ^^^^^^^ help: convert the identifier to upper camel case: `Highest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `submission_time` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:583:5
[INFO] [stdout]     |
[INFO] [stdout] 583 |     submission_time,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `SubmissionTime`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `submission_count` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:584:5
[INFO] [stdout]     |
[INFO] [stdout] 584 |     submission_count,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `SubmissionCount`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `user_id` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:585:5
[INFO] [stdout]     |
[INFO] [stdout] 585 |     user_id,
[INFO] [stdout]     |     ^^^^^^^ help: convert the identifier to upper camel case: `UserId`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/structs/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::error::Error;
[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: `HttpRequest`, `HttpResponse`, and `http::StatusCode`
[INFO] [stdout]  --> src/main.rs:4:86
[INFO] [stdout]   |
[INFO] [stdout] 4 | use actix_web::{get, put, middleware::Logger, post, web, App, HttpServer, Responder, HttpRequest, HttpResponse, http::StatusCode};
[INFO] [stdout]   |                                                                                      ^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `i64::MAX` and `path::PathBuf`
[INFO] [stdout]  --> src/main.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::{path::PathBuf, i64::MAX};
[INFO] [stdout]   |           ^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `mem::swap` and `self`
[INFO] [stdout]   --> src/main.rs:11:34
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::{fs::{self, File}, io::{self, Write}, vec, mem::swap, cmp::Ordering};
[INFO] [stdout]    |                                  ^^^^               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdio`
[INFO] [stdout]   --> src/main.rs:12:29
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::process::{Command, Stdio};
[INFO] [stdout]    |                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wait_timeout::ChildExt`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use wait_timeout::ChildExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FixedOffset`, `NaiveDate`, and `offset::LocalResult`
[INFO] [stdout]   --> src/main.rs:17:31
[INFO] [stdout]    |
[INFO] [stdout] 17 | use chrono::{Local, DateTime, FixedOffset, NaiveDate, prelude::*, offset::LocalResult};
[INFO] [stdout]    |                               ^^^^^^^^^^^  ^^^^^^^^^              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `latest` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:577:5
[INFO] [stdout]     |
[INFO] [stdout] 577 |     latest,
[INFO] [stdout]     |     ^^^^^^ help: convert the identifier to upper camel case: `Latest`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `highest` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:578:5
[INFO] [stdout]     |
[INFO] [stdout] 578 |     highest,
[INFO] [stdout]     |     ^^^^^^^ help: convert the identifier to upper camel case: `Highest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `submission_time` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:583:5
[INFO] [stdout]     |
[INFO] [stdout] 583 |     submission_time,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `SubmissionTime`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `submission_count` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:584:5
[INFO] [stdout]     |
[INFO] [stdout] 584 |     submission_count,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `SubmissionCount`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `user_id` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:585:5
[INFO] [stdout]     |
[INFO] [stdout] 585 |     user_id,
[INFO] [stdout]     |     ^^^^^^^ help: convert the identifier to upper camel case: `UserId`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:298:9
[INFO] [stdout]     |
[INFO] [stdout] 298 |     let mut users = USER.lock().unwrap();
[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/main.rs:306:13
[INFO] [stdout]     |
[INFO] [stdout] 306 |         let mut contests = CONTEST.lock().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/main.rs:366:9
[INFO] [stdout]     |
[INFO] [stdout] 366 |     let mut judge = Judge{id, created_time: now.clone(), updated_time: now.clone(), submission: body.clone(), state: "Queueing".to_...
[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/main.rs:480:9
[INFO] [stdout]     |
[INFO] [stdout] 480 |     let mut id;
[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/main.rs:486:9
[INFO] [stdout]     |
[INFO] [stdout] 486 |     let mut res: Result<Judge, Errors>;
[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/main.rs:497:9
[INFO] [stdout]     |
[INFO] [stdout] 497 |     let mut id;
[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/main.rs:503:9
[INFO] [stdout]     |
[INFO] [stdout] 503 |     let mut res: Result<Judge, Errors>;
[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/main.rs:540:13
[INFO] [stdout]     |
[INFO] [stdout] 540 |         let mut id_c = body.id.as_ref().unwrap().parse::<u64>();
[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/main.rs:541:13
[INFO] [stdout]     |
[INFO] [stdout] 541 |         let mut id;
[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/main.rs:569:9
[INFO] [stdout]     |
[INFO] [stdout] 569 |     let mut users = USER.lock().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/main.rs:597:9
[INFO] [stdout]     |
[INFO] [stdout] 597 |     let mut users = USER.lock().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/main.rs:298:9
[INFO] [stdout]     |
[INFO] [stdout] 298 |     let mut users = USER.lock().unwrap();
[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/main.rs:306:13
[INFO] [stdout]     |
[INFO] [stdout] 306 |         let mut contests = CONTEST.lock().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/main.rs:366:9
[INFO] [stdout]     |
[INFO] [stdout] 366 |     let mut judge = Judge{id, created_time: now.clone(), updated_time: now.clone(), submission: body.clone(), state: "Queueing".to_...
[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/main.rs:632:9
[INFO] [stdout]     |
[INFO] [stdout] 632 |     let mut contests = CONTEST.lock().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/main.rs:480:9
[INFO] [stdout]     |
[INFO] [stdout] 480 |     let mut id;
[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/main.rs:642:9
[INFO] [stdout]     |
[INFO] [stdout] 642 |     let mut id;
[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/main.rs:486:9
[INFO] [stdout]     |
[INFO] [stdout] 486 |     let mut res: Result<Judge, Errors>;
[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/main.rs:647:9
[INFO] [stdout]     |
[INFO] [stdout] 647 |     let mut contests = CONTEST.lock().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/main.rs:497:9
[INFO] [stdout]     |
[INFO] [stdout] 497 |     let mut id;
[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/main.rs:503:9
[INFO] [stdout]     |
[INFO] [stdout] 503 |     let mut res: Result<Judge, Errors>;
[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/main.rs:540:13
[INFO] [stdout]     |
[INFO] [stdout] 540 |         let mut id_c = body.id.as_ref().unwrap().parse::<u64>();
[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/main.rs:541:13
[INFO] [stdout]     |
[INFO] [stdout] 541 |         let mut id;
[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/main.rs:569:9
[INFO] [stdout]     |
[INFO] [stdout] 569 |     let mut users = USER.lock().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/main.rs:597:9
[INFO] [stdout]     |
[INFO] [stdout] 597 |     let mut users = USER.lock().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/main.rs:632:9
[INFO] [stdout]     |
[INFO] [stdout] 632 |     let mut contests = CONTEST.lock().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/main.rs:642:9
[INFO] [stdout]     |
[INFO] [stdout] 642 |     let mut id;
[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/main.rs:647:9
[INFO] [stdout]     |
[INFO] [stdout] 647 |     let mut contests = CONTEST.lock().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/main.rs:702:9
[INFO] [stdout]     |
[INFO] [stdout] 702 |     let mut contest_id;
[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/main.rs:709:9
[INFO] [stdout]     |
[INFO] [stdout] 709 |     let mut users = USER.lock().unwrap();
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/structs/mod.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn from(err: std::io::Error) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/structs/mod.rs:163:13
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn from(err: ParseIntError) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/structs/mod.rs:169:13
[INFO] [stdout]     |
[INFO] [stdout] 169 |     fn from(err: chrono::ParseError) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:702:9
[INFO] [stdout]     |
[INFO] [stdout] 702 |     let mut contest_id;
[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/main.rs:709:9
[INFO] [stdout]     |
[INFO] [stdout] 709 |     let mut users = USER.lock().unwrap();
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/structs/mod.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn from(err: std::io::Error) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/structs/mod.rs:163:13
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn from(err: ParseIntError) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/structs/mod.rs:169:13
[INFO] [stdout]     |
[INFO] [stdout] 169 |     fn from(err: chrono::ParseError) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/client.rs:115:29
[INFO] [stdout]     |
[INFO] [stdout] 115 |                         Err(err) => (),
[INFO] [stdout]     |                             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Server` is never constructed
[INFO] [stdout]  --> src/structs/mod.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub struct Server {
[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 `Misc` is never constructed
[INFO] [stdout]   --> src/structs/mod.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub struct Misc {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Case` is never constructed
[INFO] [stdout]   --> src/structs/mod.rs:23:16
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub struct Case {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Problem` is never constructed
[INFO] [stdout]   --> src/structs/mod.rs:32:16
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub struct Problem {
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `score_sum` is never used
[INFO] [stdout]   --> src/structs/mod.rs:41:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |     impl Problem {
[INFO] [stdout]    |     ------------ method in this implementation
[INFO] [stdout] 41 |         pub fn score_sum(&self) -> f64 {
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Language` is never constructed
[INFO] [stdout]   --> src/structs/mod.rs:51:16
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub struct Language {
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Config` is never constructed
[INFO] [stdout]   --> src/structs/mod.rs:58:16
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub struct Config {
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_index` is never used
[INFO] [stdout]   --> src/structs/mod.rs:65:16
[INFO] [stdout]    |
[INFO] [stdout] 64 |     impl Config {
[INFO] [stdout]    |     ----------- method in this implementation
[INFO] [stdout] 65 |         pub fn to_index(&self, id: u64) -> Option<usize> {
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Contest` is never constructed
[INFO] [stdout]    --> src/structs/mod.rs:124:16
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub struct Contest {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_index` is never used
[INFO] [stdout]    --> src/structs/mod.rs:135:16
[INFO] [stdout]     |
[INFO] [stdout] 134 |     impl Contest {
[INFO] [stdout]     |     ------------ method in this implementation
[INFO] [stdout] 135 |         pub fn to_index(&self, id: u64) -> Option<usize> {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/client.rs:115:29
[INFO] [stdout]     |
[INFO] [stdout] 115 |                         Err(err) => (),
[INFO] [stdout]     |                             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Server` is never constructed
[INFO] [stdout]  --> src/structs/mod.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub struct Server {
[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 `Misc` is never constructed
[INFO] [stdout]   --> src/structs/mod.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub struct Misc {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/client.rs:127:17
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 query(contest_id);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 let _ = query(contest_id);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Case` is never constructed
[INFO] [stdout]   --> src/structs/mod.rs:23:16
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub struct Case {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Problem` is never constructed
[INFO] [stdout]   --> src/structs/mod.rs:32:16
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub struct Problem {
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `score_sum` is never used
[INFO] [stdout]   --> src/structs/mod.rs:41:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |     impl Problem {
[INFO] [stdout]    |     ------------ method in this implementation
[INFO] [stdout] 41 |         pub fn score_sum(&self) -> f64 {
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Language` is never constructed
[INFO] [stdout]   --> src/structs/mod.rs:51:16
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub struct Language {
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Config` is never constructed
[INFO] [stdout]   --> src/structs/mod.rs:58:16
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub struct Config {
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_index` is never used
[INFO] [stdout]   --> src/structs/mod.rs:65:16
[INFO] [stdout]    |
[INFO] [stdout] 64 |     impl Config {
[INFO] [stdout]    |     ----------- method in this implementation
[INFO] [stdout] 65 |         pub fn to_index(&self, id: u64) -> Option<usize> {
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Contest` is never constructed
[INFO] [stdout]    --> src/structs/mod.rs:124:16
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub struct Contest {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_index` is never used
[INFO] [stdout]    --> src/structs/mod.rs:135:16
[INFO] [stdout]     |
[INFO] [stdout] 134 |     impl Contest {
[INFO] [stdout]     |     ------------ method in this implementation
[INFO] [stdout] 135 |         pub fn to_index(&self, id: u64) -> Option<usize> {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/client.rs:127:17
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 query(contest_id);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 let _ = query(contest_id);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/structs/mod.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn from(err: std::io::Error) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/structs/mod.rs:163:13
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn from(err: ParseIntError) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/structs/mod.rs:169:13
[INFO] [stdout]     |
[INFO] [stdout] 169 |     fn from(err: chrono::ParseError) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/func/mod.rs:112:17
[INFO] [stdout]     |
[INFO] [stdout] 112 |             let mut ret;
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ret`
[INFO] [stdout]   --> src/func/mod.rs:99:17
[INFO] [stdout]    |
[INFO] [stdout] 99 |             let ret = Command::new(&comm[0])
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_ret`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `limit` is never read
[INFO] [stdout]   --> src/func/mod.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |         limit = std::u64::MAX;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]   --> src/main.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         Err(error) => (),
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let mut judges = JUDGE.lock().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/main.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let mut users = USER.lock().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/main.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let mut contests = CONTEST.lock().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/main.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let mut lang: Language;
[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/main.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let mut prob: Problem;
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cas`
[INFO] [stdout]    --> src/main.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     for cas in &prob.cases
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_cas`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:414:9
[INFO] [stdout]     |
[INFO] [stdout] 414 |     let mut lock = JUDGE.lock().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/main.rs:415:9
[INFO] [stdout]     |
[INFO] [stdout] 415 |     let mut users = USER.lock().unwrap();
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/main.rs:389:23
[INFO] [stdout]     |
[INFO] [stdout] 389 | fn ask(info: &AskJob, config: &Config) -> Result<Vec<Judge>, Errors> {
[INFO] [stdout]     |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/main.rs:479:48
[INFO] [stdout]     |
[INFO] [stdout] 479 | async fn get_jobs_id(index: web::Path<String>, config: web::Data<Config>) -> impl Responder {
[INFO] [stdout]     |                                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/main.rs:522:47
[INFO] [stdout]     |
[INFO] [stdout] 522 | async fn post_users(body: web::Json<AddUser>, config: web::Data<Config>) -> impl Responder {
[INFO] [stdout]     |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/main.rs:568:20
[INFO] [stdout]     |
[INFO] [stdout] 568 | async fn get_users(config: web::Data<Config>) -> impl Responder {
[INFO] [stdout]     |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/structs/mod.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn from(err: std::io::Error) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/structs/mod.rs:163:13
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn from(err: ParseIntError) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/structs/mod.rs:169:13
[INFO] [stdout]     |
[INFO] [stdout] 169 |     fn from(err: chrono::ParseError) -> Self {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/main.rs:631:23
[INFO] [stdout]     |
[INFO] [stdout] 631 | async fn get_contests(config: web::Data<Config>) -> impl Responder {
[INFO] [stdout]     |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `info`
[INFO] [stdout]    --> src/main.rs:641:52
[INFO] [stdout]     |
[INFO] [stdout] 641 | async fn get_contests_id(index: web::Path<String>, info: web::Query<Rule>, config: web::Data<Config>) -> impl Responder {
[INFO] [stdout]     |                                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_info`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/main.rs:641:76
[INFO] [stdout]     |
[INFO] [stdout] 641 | async fn get_contests_id(index: web::Path<String>, info: web::Query<Rule>, config: web::Data<Config>) -> impl Responder {
[INFO] [stdout]     |                                                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:739:9
[INFO] [stdout]     |
[INFO] [stdout] 739 |     for i in 0..users.len() {
[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/func/mod.rs:112:17
[INFO] [stdout]     |
[INFO] [stdout] 112 |             let mut ret;
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ret`
[INFO] [stdout]   --> src/func/mod.rs:99:17
[INFO] [stdout]    |
[INFO] [stdout] 99 |             let ret = Command::new(&comm[0])
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_ret`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `limit` is never read
[INFO] [stdout]   --> src/func/mod.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |         limit = std::u64::MAX;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]   --> src/main.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         Err(error) => (),
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let mut judges = JUDGE.lock().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/main.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let mut users = USER.lock().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/main.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let mut contests = CONTEST.lock().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/main.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let mut lang: Language;
[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/main.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let mut prob: Problem;
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cas`
[INFO] [stdout]    --> src/main.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     for cas in &prob.cases
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_cas`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:414:9
[INFO] [stdout]     |
[INFO] [stdout] 414 |     let mut lock = JUDGE.lock().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/main.rs:415:9
[INFO] [stdout]     |
[INFO] [stdout] 415 |     let mut users = USER.lock().unwrap();
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/main.rs:389:23
[INFO] [stdout]     |
[INFO] [stdout] 389 | fn ask(info: &AskJob, config: &Config) -> Result<Vec<Judge>, Errors> {
[INFO] [stdout]     |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]    --> src/main.rs:939:13
[INFO] [stdout]     |
[INFO] [stdout] 939 |         let res = Command::new("rm")
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/main.rs:479:48
[INFO] [stdout]     |
[INFO] [stdout] 479 | async fn get_jobs_id(index: web::Path<String>, config: web::Data<Config>) -> impl Responder {
[INFO] [stdout]     |                                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/main.rs:522:47
[INFO] [stdout]     |
[INFO] [stdout] 522 | async fn post_users(body: web::Json<AddUser>, config: web::Data<Config>) -> impl Responder {
[INFO] [stdout]     |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/main.rs:568:20
[INFO] [stdout]     |
[INFO] [stdout] 568 | async fn get_users(config: web::Data<Config>) -> impl Responder {
[INFO] [stdout]     |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `TMPDIR` should have a snake case name
[INFO] [stdout]    --> src/main.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |     let TMPDIR = get_tmpdir();
[INFO] [stdout]     |         ^^^^^^ help: convert the identifier to snake case: `tmpdir`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Er` should have a snake case name
[INFO] [stdout]   --> src/func/mod.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         Err(Er) => {
[INFO] [stdout]    |             ^^ help: convert the identifier to snake case: `er`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `len` should have an upper case name
[INFO] [stdout]   --> src/func/mod.rs:34:11
[INFO] [stdout]    |
[INFO] [stdout] 34 |     const len: usize = 5;
[INFO] [stdout]    |           ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]    |
[INFO] [stdout] 34 -     const len: usize = 5;
[INFO] [stdout] 34 +     const LEN: usize = 5;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/main.rs:631:23
[INFO] [stdout]     |
[INFO] [stdout] 631 | async fn get_contests(config: web::Data<Config>) -> impl Responder {
[INFO] [stdout]     |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `info`
[INFO] [stdout]    --> src/main.rs:641:52
[INFO] [stdout]     |
[INFO] [stdout] 641 | async fn get_contests_id(index: web::Path<String>, info: web::Query<Rule>, config: web::Data<Config>) -> impl Responder {
[INFO] [stdout]     |                                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_info`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]    --> src/main.rs:641:76
[INFO] [stdout]     |
[INFO] [stdout] 641 | async fn get_contests_id(index: web::Path<String>, info: web::Query<Rule>, config: web::Data<Config>) -> impl Responder {
[INFO] [stdout]     |                                                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:739:9
[INFO] [stdout]     |
[INFO] [stdout] 739 |     for i in 0..users.len() {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]    --> src/main.rs:939:13
[INFO] [stdout]     |
[INFO] [stdout] 939 |         let res = Command::new("rm")
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `TMPDIR` should have a snake case name
[INFO] [stdout]    --> src/main.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |     let TMPDIR = get_tmpdir();
[INFO] [stdout]     |         ^^^^^^ help: convert the identifier to snake case: `tmpdir`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Er` should have a snake case name
[INFO] [stdout]   --> src/func/mod.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         Err(Er) => {
[INFO] [stdout]    |             ^^ help: convert the identifier to snake case: `er`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `len` should have an upper case name
[INFO] [stdout]   --> src/func/mod.rs:34:11
[INFO] [stdout]    |
[INFO] [stdout] 34 |     const len: usize = 5;
[INFO] [stdout]    |           ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]    |
[INFO] [stdout] 34 -     const len: usize = 5;
[INFO] [stdout] 34 +     const LEN: usize = 5;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.03s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: openssl v0.10.41
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "78eabbdf0f3c20986bc7e9d2597154a90a017e5eedee13ef9474c608529e3a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78eabbdf0f3c20986bc7e9d2597154a90a017e5eedee13ef9474c608529e3a28", kill_on_drop: false }`
[INFO] [stdout] 78eabbdf0f3c20986bc7e9d2597154a90a017e5eedee13ef9474c608529e3a28
