[INFO] cloning repository https://github.com/RYOSKATE/dueling_bandits_simulator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RYOSKATE/dueling_bandits_simulator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRYOSKATE%2Fdueling_bandits_simulator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRYOSKATE%2Fdueling_bandits_simulator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 97bab60cfae59bf66a57560e631463441fcb6337
[INFO] testing RYOSKATE/dueling_bandits_simulator against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRYOSKATE%2Fdueling_bandits_simulator" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RYOSKATE/dueling_bandits_simulator on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/RYOSKATE/dueling_bandits_simulator
[INFO] finished tweaking git repo https://github.com/RYOSKATE/dueling_bandits_simulator
[INFO] tweaked toml for git repo https://github.com/RYOSKATE/dueling_bandits_simulator written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/RYOSKATE/dueling_bandits_simulator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7797f8a36b71dd470f13e47ab72ec9c981edcc73516d7cb56eab55dff5161019
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7797f8a36b71dd470f13e47ab72ec9c981edcc73516d7cb56eab55dff5161019", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7797f8a36b71dd470f13e47ab72ec9c981edcc73516d7cb56eab55dff5161019", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7797f8a36b71dd470f13e47ab72ec9c981edcc73516d7cb56eab55dff5161019", kill_on_drop: false }`
[INFO] [stdout] 7797f8a36b71dd470f13e47ab72ec9c981edcc73516d7cb56eab55dff5161019
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f89a12dba9068b7671a300b16f59c2838ae85a896646f0be2bf6917255ed6a02
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f89a12dba9068b7671a300b16f59c2838ae85a896646f0be2bf6917255ed6a02", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling byteorder v1.4.2
[INFO] [stderr]    Compiling array-macro v2.0.0
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling num v0.3.1
[INFO] [stderr]    Compiling bstr v0.2.14
[INFO] [stderr]    Compiling csv v1.1.5
[INFO] [stderr]    Compiling dueling_bandits_simulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Open01`
[INFO] [stdout]  --> src/main.rs:1:55
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::distributions::{Normal, Beta, Distribution, Open01};
[INFO] [stdout]   |                                                       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `array_macro::*`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use array_macro::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DateTime`, `Date`, `Utc`
[INFO] [stdout]  --> src/main.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | use chrono::{Utc, Local, DateTime, Date};
[INFO] [stdout]   |              ^^^         ^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/main.rs:84:96
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let mut wtr = csv::Writer::from_path(RESULTS_FILENAME).expect("Fail to open results file");;
[INFO] [stdout]    |                                                                                                ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/main.rs:85:120
[INFO] [stdout]    |
[INFO] [stdout] 85 |     wtr.write_record(SimulationResult::toHeaderString().iter().map(|x| x.to_string())).expect("Fail to write results");;
[INFO] [stdout]    |                                                                                                                        ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:99:96
[INFO] [stdout]    |
[INFO] [stdout] 99 |                     let sum_nDCG = (0..NUM_OF_SIMURATION).collect::<Vec<_>>().par_iter().map(|&x| {
[INFO] [stdout]    |                                                                                                ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `submission_order`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     submission_order: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `IDEAL_WINNING_PERCENTAGES_MATRIX_FILENAME`
[INFO] [stdout]   --> src/main.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 |     const IDEAL_WINNING_PERCENTAGES_MATRIX_FILENAME: &str = "ideal_winning_percentages_matrix.csv";
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `REAL_WINNING_PERCENTAGES_MATRIX_FILENAME`
[INFO] [stdout]   --> src/main.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     const REAL_WINNING_PERCENTAGES_MATRIX_FILENAME:&str = "real_winning_percentages_matrix.csv";
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calc_DCG1`
[INFO] [stdout]    --> src/main.rs:314:4
[INFO] [stdout]     |
[INFO] [stdout] 314 | fn calc_DCG1(duelists: &Vec<Duelist>) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_matrix_to_csv`
[INFO] [stdout]    --> src/main.rs:333:4
[INFO] [stdout]     |
[INFO] [stdout] 333 | fn write_matrix_to_csv(matrix: &Vec<Vec<f64>>, filename: &str) -> Result<(), std::io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_results_to_csv`
[INFO] [stdout]    --> src/main.rs:342:4
[INFO] [stdout]     |
[INFO] [stdout] 342 | fn write_results_to_csv(results: &Vec<SimulationResult>, filename: &str) -> Result<(), std::io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `nDCG` should have a snake case name
[INFO] [stdout]   --> src/main.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     nDCG: f64,
[INFO] [stdout]    |     ^^^^ help: convert the identifier to snake case: `n_dcg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nDCG` should have a snake case name
[INFO] [stdout]   --> src/main.rs:43:55
[INFO] [stdout]    |
[INFO] [stdout] 43 |                reward_winner: f64, reward_loser: f64, nDCG: f64,) -> SimulationResult {
[INFO] [stdout]    |                                                       ^^^^ help: convert the identifier to snake case: `n_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `toHeaderString` should have a snake case name
[INFO] [stdout]   --> src/main.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn toHeaderString() -> [&'static str;6]  {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `to_header_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `toStrings` should have a snake case name
[INFO] [stdout]   --> src/main.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn toStrings(&self) -> [String; 6] {
[INFO] [stdout]    |            ^^^^^^^^^ help: convert the identifier to snake case: `to_strings`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nDCGs` should have a snake case name
[INFO] [stdout]   --> src/main.rs:96:29
[INFO] [stdout]    |
[INFO] [stdout] 96 |                     let mut nDCGs: Vec<f64> = vec![];
[INFO] [stdout]    |                             ^^^^^ help: convert the identifier to snake case: `n_dcgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `rDCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:268:29
[INFO] [stdout]     |
[INFO] [stdout] 268 |                         let rDCG = calc_DCG(&duelists);
[INFO] [stdout]     |                             ^^^^ help: convert the identifier to snake case: `r_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `iDCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:271:29
[INFO] [stdout]     |
[INFO] [stdout] 271 |                         let iDCG = calc_DCG(&duelists);
[INFO] [stdout]     |                             ^^^^ help: convert the identifier to snake case: `i_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nDCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:273:29
[INFO] [stdout]     |
[INFO] [stdout] 273 |                         let nDCG = rDCG / iDCG;
[INFO] [stdout]     |                             ^^^^ help: convert the identifier to snake case: `n_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sum_nDCG` should have a snake case name
[INFO] [stdout]   --> src/main.rs:99:25
[INFO] [stdout]    |
[INFO] [stdout] 99 |                     let sum_nDCG = (0..NUM_OF_SIMURATION).collect::<Vec<_>>().par_iter().map(|&x| {
[INFO] [stdout]    |                         ^^^^^^^^ help: convert the identifier to snake case: `sum_n_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `average_nDCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:287:25
[INFO] [stdout]     |
[INFO] [stdout] 287 |                     let average_nDCG: f64 = sum_nDCG / (NUM_OF_SIMURATION as f64);
[INFO] [stdout]     |                         ^^^^^^^^^^^^ help: convert the identifier to snake case: `average_n_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calc_DCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:309:4
[INFO] [stdout]     |
[INFO] [stdout] 309 | fn calc_DCG(duelists: &Vec<Duelist>) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^ help: convert the identifier to snake case: `calc_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calc_DCG1` should have a snake case name
[INFO] [stdout]    --> src/main.rs:314:4
[INFO] [stdout]     |
[INFO] [stdout] 314 | fn calc_DCG1(duelists: &Vec<Duelist>) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^ help: convert the identifier to snake case: `calc_dcg1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `DCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:315:13
[INFO] [stdout]     |
[INFO] [stdout] 315 |     let mut DCG = duelists.first().unwrap().ideal_borda_score;
[INFO] [stdout]     |             ^^^ help: convert the identifier to snake case: `dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calc_DCG2` should have a snake case name
[INFO] [stdout]    --> src/main.rs:324:4
[INFO] [stdout]     |
[INFO] [stdout] 324 | fn calc_DCG2(duelists: &Vec<Duelist>) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^ help: convert the identifier to snake case: `calc_dcg2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `DCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:325:13
[INFO] [stdout]     |
[INFO] [stdout] 325 |     let mut DCG:f64 = 0.0;
[INFO] [stdout]     |             ^^^ help: convert the identifier to snake case: `dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.21s
[INFO] running `Command { std: "docker" "inspect" "f89a12dba9068b7671a300b16f59c2838ae85a896646f0be2bf6917255ed6a02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f89a12dba9068b7671a300b16f59c2838ae85a896646f0be2bf6917255ed6a02", kill_on_drop: false }`
[INFO] [stdout] f89a12dba9068b7671a300b16f59c2838ae85a896646f0be2bf6917255ed6a02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a578d6ed7ea14f2576d2ac4afda3f446dc5022724a814645723a80bb2281e3ad
[INFO] running `Command { std: "docker" "start" "-a" "a578d6ed7ea14f2576d2ac4afda3f446dc5022724a814645723a80bb2281e3ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling dueling_bandits_simulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Open01`
[INFO] [stdout]  --> src/main.rs:1:55
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::distributions::{Normal, Beta, Distribution, Open01};
[INFO] [stdout]   |                                                       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `array_macro::*`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use array_macro::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DateTime`, `Date`, `Utc`
[INFO] [stdout]  --> src/main.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | use chrono::{Utc, Local, DateTime, Date};
[INFO] [stdout]   |              ^^^         ^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/main.rs:84:96
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let mut wtr = csv::Writer::from_path(RESULTS_FILENAME).expect("Fail to open results file");;
[INFO] [stdout]    |                                                                                                ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/main.rs:85:120
[INFO] [stdout]    |
[INFO] [stdout] 85 |     wtr.write_record(SimulationResult::toHeaderString().iter().map(|x| x.to_string())).expect("Fail to write results");;
[INFO] [stdout]    |                                                                                                                        ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:99:96
[INFO] [stdout]    |
[INFO] [stdout] 99 |                     let sum_nDCG = (0..NUM_OF_SIMURATION).collect::<Vec<_>>().par_iter().map(|&x| {
[INFO] [stdout]    |                                                                                                ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `submission_order`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     submission_order: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calc_DCG1`
[INFO] [stdout]    --> src/main.rs:314:4
[INFO] [stdout]     |
[INFO] [stdout] 314 | fn calc_DCG1(duelists: &Vec<Duelist>) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_matrix_to_csv`
[INFO] [stdout]    --> src/main.rs:333:4
[INFO] [stdout]     |
[INFO] [stdout] 333 | fn write_matrix_to_csv(matrix: &Vec<Vec<f64>>, filename: &str) -> Result<(), std::io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_results_to_csv`
[INFO] [stdout]    --> src/main.rs:342:4
[INFO] [stdout]     |
[INFO] [stdout] 342 | fn write_results_to_csv(results: &Vec<SimulationResult>, filename: &str) -> Result<(), std::io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `nDCG` should have a snake case name
[INFO] [stdout]   --> src/main.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     nDCG: f64,
[INFO] [stdout]    |     ^^^^ help: convert the identifier to snake case: `n_dcg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nDCG` should have a snake case name
[INFO] [stdout]   --> src/main.rs:43:55
[INFO] [stdout]    |
[INFO] [stdout] 43 |                reward_winner: f64, reward_loser: f64, nDCG: f64,) -> SimulationResult {
[INFO] [stdout]    |                                                       ^^^^ help: convert the identifier to snake case: `n_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `toHeaderString` should have a snake case name
[INFO] [stdout]   --> src/main.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn toHeaderString() -> [&'static str;6]  {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `to_header_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `toStrings` should have a snake case name
[INFO] [stdout]   --> src/main.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn toStrings(&self) -> [String; 6] {
[INFO] [stdout]    |            ^^^^^^^^^ help: convert the identifier to snake case: `to_strings`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nDCGs` should have a snake case name
[INFO] [stdout]   --> src/main.rs:96:29
[INFO] [stdout]    |
[INFO] [stdout] 96 |                     let mut nDCGs: Vec<f64> = vec![];
[INFO] [stdout]    |                             ^^^^^ help: convert the identifier to snake case: `n_dcgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `rDCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:268:29
[INFO] [stdout]     |
[INFO] [stdout] 268 |                         let rDCG = calc_DCG(&duelists);
[INFO] [stdout]     |                             ^^^^ help: convert the identifier to snake case: `r_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `iDCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:271:29
[INFO] [stdout]     |
[INFO] [stdout] 271 |                         let iDCG = calc_DCG(&duelists);
[INFO] [stdout]     |                             ^^^^ help: convert the identifier to snake case: `i_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nDCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:273:29
[INFO] [stdout]     |
[INFO] [stdout] 273 |                         let nDCG = rDCG / iDCG;
[INFO] [stdout]     |                             ^^^^ help: convert the identifier to snake case: `n_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sum_nDCG` should have a snake case name
[INFO] [stdout]   --> src/main.rs:99:25
[INFO] [stdout]    |
[INFO] [stdout] 99 |                     let sum_nDCG = (0..NUM_OF_SIMURATION).collect::<Vec<_>>().par_iter().map(|&x| {
[INFO] [stdout]    |                         ^^^^^^^^ help: convert the identifier to snake case: `sum_n_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `average_nDCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:287:25
[INFO] [stdout]     |
[INFO] [stdout] 287 |                     let average_nDCG: f64 = sum_nDCG / (NUM_OF_SIMURATION as f64);
[INFO] [stdout]     |                         ^^^^^^^^^^^^ help: convert the identifier to snake case: `average_n_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calc_DCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:309:4
[INFO] [stdout]     |
[INFO] [stdout] 309 | fn calc_DCG(duelists: &Vec<Duelist>) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^ help: convert the identifier to snake case: `calc_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calc_DCG1` should have a snake case name
[INFO] [stdout]    --> src/main.rs:314:4
[INFO] [stdout]     |
[INFO] [stdout] 314 | fn calc_DCG1(duelists: &Vec<Duelist>) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^ help: convert the identifier to snake case: `calc_dcg1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `DCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:315:13
[INFO] [stdout]     |
[INFO] [stdout] 315 |     let mut DCG = duelists.first().unwrap().ideal_borda_score;
[INFO] [stdout]     |             ^^^ help: convert the identifier to snake case: `dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calc_DCG2` should have a snake case name
[INFO] [stdout]    --> src/main.rs:324:4
[INFO] [stdout]     |
[INFO] [stdout] 324 | fn calc_DCG2(duelists: &Vec<Duelist>) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^ help: convert the identifier to snake case: `calc_dcg2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `DCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:325:13
[INFO] [stdout]     |
[INFO] [stdout] 325 |     let mut DCG:f64 = 0.0;
[INFO] [stdout]     |             ^^^ help: convert the identifier to snake case: `dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `Command { std: "docker" "inspect" "a578d6ed7ea14f2576d2ac4afda3f446dc5022724a814645723a80bb2281e3ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a578d6ed7ea14f2576d2ac4afda3f446dc5022724a814645723a80bb2281e3ad", kill_on_drop: false }`
[INFO] [stdout] a578d6ed7ea14f2576d2ac4afda3f446dc5022724a814645723a80bb2281e3ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 93e5cdc81592ab6125eab7e12f642985adc26ac8b2048af0252ee8ffdcf596c3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "93e5cdc81592ab6125eab7e12f642985adc26ac8b2048af0252ee8ffdcf596c3", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Open01`
[INFO] [stderr]  --> src/main.rs:1:55
[INFO] [stderr]   |
[INFO] [stderr] 1 | use rand::distributions::{Normal, Beta, Distribution, Open01};
[INFO] [stderr]   |                                                       ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `array_macro::*`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use array_macro::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `DateTime`, `Date`, `Utc`
[INFO] [stderr]  --> src/main.rs:6:14
[INFO] [stderr]   |
[INFO] [stderr] 6 | use chrono::{Utc, Local, DateTime, Date};
[INFO] [stderr]   |              ^^^         ^^^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/main.rs:84:96
[INFO] [stderr]    |
[INFO] [stderr] 84 |     let mut wtr = csv::Writer::from_path(RESULTS_FILENAME).expect("Fail to open results file");;
[INFO] [stderr]    |                                                                                                ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/main.rs:85:120
[INFO] [stderr]    |
[INFO] [stderr] 85 |     wtr.write_record(SimulationResult::toHeaderString().iter().map(|x| x.to_string())).expect("Fail to write results");;
[INFO] [stderr]    |                                                                                                                        ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:99:96
[INFO] [stderr]    |
[INFO] [stderr] 99 |                     let sum_nDCG = (0..NUM_OF_SIMURATION).collect::<Vec<_>>().par_iter().map(|&x| {
[INFO] [stderr]    |                                                                                                ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `submission_order`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     submission_order: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calc_DCG1`
[INFO] [stderr]    --> src/main.rs:314:4
[INFO] [stderr]     |
[INFO] [stderr] 314 | fn calc_DCG1(duelists: &Vec<Duelist>) -> f64 {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `write_matrix_to_csv`
[INFO] [stderr]    --> src/main.rs:333:4
[INFO] [stderr]     |
[INFO] [stderr] 333 | fn write_matrix_to_csv(matrix: &Vec<Vec<f64>>, filename: &str) -> Result<(), std::io::Error> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `write_results_to_csv`
[INFO] [stderr]    --> src/main.rs:342:4
[INFO] [stderr]     |
[INFO] [stderr] 342 | fn write_results_to_csv(results: &Vec<SimulationResult>, filename: &str) -> Result<(), std::io::Error> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `nDCG` should have a snake case name
[INFO] [stderr]   --> src/main.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     nDCG: f64,
[INFO] [stderr]    |     ^^^^ help: convert the identifier to snake case: `n_dcg`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `nDCG` should have a snake case name
[INFO] [stderr]   --> src/main.rs:43:55
[INFO] [stderr]    |
[INFO] [stderr] 43 |                reward_winner: f64, reward_loser: f64, nDCG: f64,) -> SimulationResult {
[INFO] [stderr]    |                                                       ^^^^ help: convert the identifier to snake case: `n_dcg`
[INFO] [stderr] 
[INFO] [stderr] warning: method `toHeaderString` should have a snake case name
[INFO] [stderr]   --> src/main.rs:49:12
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn toHeaderString() -> [&'static str;6]  {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `to_header_string`
[INFO] [stderr] 
[INFO] [stderr] warning: method `toStrings` should have a snake case name
[INFO] [stderr]   --> src/main.rs:52:12
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn toStrings(&self) -> [String; 6] {
[INFO] [stderr]    |            ^^^^^^^^^ help: convert the identifier to snake case: `to_strings`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `nDCGs` should have a snake case name
[INFO] [stderr]   --> src/main.rs:96:29
[INFO] [stderr]    |
[INFO] [stderr] 96 |                     let mut nDCGs: Vec<f64> = vec![];
[INFO] [stderr]    |                             ^^^^^ help: convert the identifier to snake case: `n_dcgs`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `rDCG` should have a snake case name
[INFO] [stderr]    --> src/main.rs:268:29
[INFO] [stderr]     |
[INFO] [stderr] 268 |                         let rDCG = calc_DCG(&duelists);
[INFO] [stderr]     |                             ^^^^ help: convert the identifier to snake case: `r_dcg`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `iDCG` should have a snake case name
[INFO] [stderr]    --> src/main.rs:271:29
[INFO] [stderr]     |
[INFO] [stderr] 271 |                         let iDCG = calc_DCG(&duelists);
[INFO] [stderr]     |                             ^^^^ help: convert the identifier to snake case: `i_dcg`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `nDCG` should have a snake case name
[INFO] [stderr]    --> src/main.rs:273:29
[INFO] [stderr]     |
[INFO] [stderr] 273 |                         let nDCG = rDCG / iDCG;
[INFO] [stderr]     |                             ^^^^ help: convert the identifier to snake case: `n_dcg`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `sum_nDCG` should have a snake case name
[INFO] [stderr]   --> src/main.rs:99:25
[INFO] [stderr]    |
[INFO] [stderr] 99 |                     let sum_nDCG = (0..NUM_OF_SIMURATION).collect::<Vec<_>>().par_iter().map(|&x| {
[INFO] [stderr]    |                         ^^^^^^^^ help: convert the identifier to snake case: `sum_n_dcg`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `average_nDCG` should have a snake case name
[INFO] [stderr]    --> src/main.rs:287:25
[INFO] [stderr]     |
[INFO] [stderr] 287 |                     let average_nDCG: f64 = sum_nDCG / (NUM_OF_SIMURATION as f64);
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: convert the identifier to snake case: `average_n_dcg`
[INFO] [stderr] 
[INFO] [stderr] warning: function `calc_DCG` should have a snake case name
[INFO] [stderr]    --> src/main.rs:309:4
[INFO] [stderr]     |
[INFO] [stderr] 309 | fn calc_DCG(duelists: &Vec<Duelist>) -> f64 {
[INFO] [stderr]     |    ^^^^^^^^ help: convert the identifier to snake case: `calc_dcg`
[INFO] [stderr] 
[INFO] [stderr] warning: function `calc_DCG1` should have a snake case name
[INFO] [stderr]    --> src/main.rs:314:4
[INFO] [stderr]     |
[INFO] [stderr] 314 | fn calc_DCG1(duelists: &Vec<Duelist>) -> f64 {
[INFO] [stderr]     |    ^^^^^^^^^ help: convert the identifier to snake case: `calc_dcg1`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `DCG` should have a snake case name
[INFO] [stderr]    --> src/main.rs:315:13
[INFO] [stderr]     |
[INFO] [stderr] 315 |     let mut DCG = duelists.first().unwrap().ideal_borda_score;
[INFO] [stderr]     |             ^^^ help: convert the identifier to snake case: `dcg`
[INFO] [stderr] 
[INFO] [stderr] warning: function `calc_DCG2` should have a snake case name
[INFO] [stderr]    --> src/main.rs:324:4
[INFO] [stderr]     |
[INFO] [stderr] 324 | fn calc_DCG2(duelists: &Vec<Duelist>) -> f64 {
[INFO] [stderr]     |    ^^^^^^^^^ help: convert the identifier to snake case: `calc_dcg2`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `DCG` should have a snake case name
[INFO] [stderr]    --> src/main.rs:325:13
[INFO] [stderr]     |
[INFO] [stderr] 325 |     let mut DCG:f64 = 0.0;
[INFO] [stderr]     |             ^^^ help: convert the identifier to snake case: `dcg`
[INFO] [stderr] 
[INFO] [stderr] warning: `dueling_bandits_simulator` (bin "dueling_bandits_simulator" test) generated 25 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/dueling_bandits_simulator-b79ebf9465cf3f75)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "93e5cdc81592ab6125eab7e12f642985adc26ac8b2048af0252ee8ffdcf596c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93e5cdc81592ab6125eab7e12f642985adc26ac8b2048af0252ee8ffdcf596c3", kill_on_drop: false }`
[INFO] [stdout] 93e5cdc81592ab6125eab7e12f642985adc26ac8b2048af0252ee8ffdcf596c3