[INFO] cloning repository https://github.com/Saetch/masys_4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Saetch/masys_4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSaetch%2Fmasys_4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSaetch%2Fmasys_4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 932369847e36ae5d8e758d454a0aa1a830bdf3da
[INFO] testing Saetch/masys_4 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSaetch%2Fmasys_4" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Saetch/masys_4
[INFO] finished tweaking git repo https://github.com/Saetch/masys_4
[INFO] tweaked toml for git repo https://github.com/Saetch/masys_4 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Saetch/masys_4 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Saetch/masys_4 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b097bfb4a2be2859cfc4ac1e98a3e789e0ecf5dd76d52cedc78bf28d12a0499c
[INFO] running `Command { std: "docker" "start" "-a" "b097bfb4a2be2859cfc4ac1e98a3e789e0ecf5dd76d52cedc78bf28d12a0499c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b097bfb4a2be2859cfc4ac1e98a3e789e0ecf5dd76d52cedc78bf28d12a0499c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b097bfb4a2be2859cfc4ac1e98a3e789e0ecf5dd76d52cedc78bf28d12a0499c", kill_on_drop: false }`
[INFO] [stdout] b097bfb4a2be2859cfc4ac1e98a3e789e0ecf5dd76d52cedc78bf28d12a0499c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53d86b8a4f273db34d5662cd1908da2dd559251255d4a6f97f83cdf77b79c35a
[INFO] running `Command { std: "docker" "start" "-a" "53d86b8a4f273db34d5662cd1908da2dd559251255d4a6f97f83cdf77b79c35a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling masys_4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `thread` and `time::Duration`
[INFO] [stdout]  --> src/main.rs:1:36
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cell::{RefCell, RefMut}, thread, time::Duration, fs::OpenOptions};
[INFO] [stdout]   |                                    ^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_id`, `get_points`, and `get_last_opponent_move` are never used
[INFO] [stdout]   --> src/player.rs:28:19
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Player {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub(crate) fn get_id(&self) -> u32 {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub(crate) fn get_points(&self) -> u32 {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub(crate) fn get_last_opponent_move(&self) -> Choice {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `n` should have an upper case name
[INFO] [stdout]   --> src/main.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 |     const n: u32 = 6;
[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] 12 -     const n: u32 = 6;
[INFO] [stdout] 12 +     const N: u32 = 6;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 | ...   writeln!(file,"Player {} has {} points after {} draws, average of {} points per game ", i as u32%n + 1, result_array[i as usize] as f64 / AMOUNT_FOR_TEST as f64, (i as u32 /n ) + 1, (result_array[i as usize] as f64 / AMOUNT_FOR_TEST as f64) / ((i as u32/n) + 1) as f64 );
[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] 64 |                 let _ = writeln!(file,"Player {} has {} points after {} draws, average of {} points per game ", i as u32%n + 1, result_array[i as usize] as f64 / AMOUNT_FOR_TEST as f64, (i as u32 /n ) + 1, (result_array[i as usize] as f64 / AMOUNT_FOR_TEST as f64) / ((i as u32/n) + 1) as f64 );
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.67s
[INFO] running `Command { std: "docker" "inspect" "53d86b8a4f273db34d5662cd1908da2dd559251255d4a6f97f83cdf77b79c35a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53d86b8a4f273db34d5662cd1908da2dd559251255d4a6f97f83cdf77b79c35a", kill_on_drop: false }`
[INFO] [stdout] 53d86b8a4f273db34d5662cd1908da2dd559251255d4a6f97f83cdf77b79c35a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9dd4538de15282c555fe9d983f6ece58409f72f5d1155661aa346a51961977d6
[INFO] running `Command { std: "docker" "start" "-a" "9dd4538de15282c555fe9d983f6ece58409f72f5d1155661aa346a51961977d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling masys_4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `thread` and `time::Duration`
[INFO] [stdout]  --> src/main.rs:1:36
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cell::{RefCell, RefMut}, thread, time::Duration, fs::OpenOptions};
[INFO] [stdout]   |                                    ^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_id`, `get_points`, and `get_last_opponent_move` are never used
[INFO] [stdout]   --> src/player.rs:28:19
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Player {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub(crate) fn get_id(&self) -> u32 {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub(crate) fn get_points(&self) -> u32 {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub(crate) fn get_last_opponent_move(&self) -> Choice {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `n` should have an upper case name
[INFO] [stdout]   --> src/main.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 |     const n: u32 = 6;
[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] 12 -     const n: u32 = 6;
[INFO] [stdout] 12 +     const N: u32 = 6;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 | ...   writeln!(file,"Player {} has {} points after {} draws, average of {} points per game ", i as u32%n + 1, result_array[i as usize] as f64 / AMOUNT_FOR_TEST as f64, (i as u32 /n ) + 1, (result_array[i as usize] as f64 / AMOUNT_FOR_TEST as f64) / ((i as u32/n) + 1) as f64 );
[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] 64 |                 let _ = writeln!(file,"Player {} has {} points after {} draws, average of {} points per game ", i as u32%n + 1, result_array[i as usize] as f64 / AMOUNT_FOR_TEST as f64, (i as u32 /n ) + 1, (result_array[i as usize] as f64 / AMOUNT_FOR_TEST as f64) / ((i as u32/n) + 1) as f64 );
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "9dd4538de15282c555fe9d983f6ece58409f72f5d1155661aa346a51961977d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dd4538de15282c555fe9d983f6ece58409f72f5d1155661aa346a51961977d6", kill_on_drop: false }`
[INFO] [stdout] 9dd4538de15282c555fe9d983f6ece58409f72f5d1155661aa346a51961977d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8405895907b91880c2bf0623e32d34af0e976365fb34dbe212377bce5bc04596
[INFO] running `Command { std: "docker" "start" "-a" "8405895907b91880c2bf0623e32d34af0e976365fb34dbe212377bce5bc04596", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `thread` and `time::Duration`
[INFO] [stdout] 
[INFO] [stderr]  --> src/main.rs:1:36
[INFO] [stdout] running 0 tests
[INFO] [stderr]   |
[INFO] [stdout] 
[INFO] [stderr] 1 | use std::{cell::{RefCell, RefMut}, thread, time::Duration, fs::OpenOptions};
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]   |                                    ^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: methods `get_id`, `get_points`, and `get_last_opponent_move` are never used
[INFO] [stderr]   --> src/player.rs:28:19
[INFO] [stderr]    |
[INFO] [stderr] 18 | impl Player {
[INFO] [stderr]    | ----------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 28 |     pub(crate) fn get_id(&self) -> u32 {
[INFO] [stderr]    |                   ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 32 |     pub(crate) fn get_points(&self) -> u32 {
[INFO] [stderr]    |                   ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 36 |     pub(crate) fn get_last_opponent_move(&self) -> Choice {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `n` should have an upper case name
[INFO] [stderr]   --> src/main.rs:12:11
[INFO] [stderr]    |
[INFO] [stderr] 12 |     const n: u32 = 6;
[INFO] [stderr]    |           ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] help: convert the identifier to upper case
[INFO] [stderr]    |
[INFO] [stderr] 12 -     const n: u32 = 6;
[INFO] [stderr] 12 +     const N: u32 = 6;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:64:17
[INFO] [stderr]    |
[INFO] [stderr] 64 | ...   writeln!(file,"Player {} has {} points after {} draws, average of {} points per game ", i as u32%n + 1, result_array[i as usize] as f64 / AMOUNT_FOR_TEST as f64, (i as u32 /n ) + 1, (result_array[i as usize] as f64 / AMOUNT_FOR_TEST as f64) / ((i as u32/n) + 1) as f64 );
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 64 |                 let _ = writeln!(file,"Player {} has {} points after {} draws, average of {} points per game ", i as u32%n + 1, result_array[i as usize] as f64 / AMOUNT_FOR_TEST as f64, (i as u32 /n ) + 1, (result_array[i as usize] as f64 / AMOUNT_FOR_TEST as f64) / ((i as u32/n) + 1) as f64 );
[INFO] [stderr]    |                 +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `masys_4` (bin "masys_4" test) generated 4 warnings (run `cargo fix --bin "masys_4" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/masys_4-a55467d99445ceee)
[INFO] running `Command { std: "docker" "inspect" "8405895907b91880c2bf0623e32d34af0e976365fb34dbe212377bce5bc04596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8405895907b91880c2bf0623e32d34af0e976365fb34dbe212377bce5bc04596", kill_on_drop: false }`
[INFO] [stdout] 8405895907b91880c2bf0623e32d34af0e976365fb34dbe212377bce5bc04596