[INFO] cloning repository https://github.com/nrdudaev/arcade-scoreboard
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nrdudaev/arcade-scoreboard" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrdudaev%2Farcade-scoreboard", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrdudaev%2Farcade-scoreboard'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8e7d3619f065d18e3992aef20cf45b8a799455a7
[INFO] checking nrdudaev/arcade-scoreboard against master#57f772f25c5ce2bd870d6f8c3ab318eaee5a3326 for pr-133502-22
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrdudaev%2Farcade-scoreboard" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nrdudaev/arcade-scoreboard
[INFO] finished tweaking git repo https://github.com/nrdudaev/arcade-scoreboard
[INFO] tweaked toml for git repo https://github.com/nrdudaev/arcade-scoreboard written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nrdudaev/arcade-scoreboard on toolchain 57f772f25c5ce2bd870d6f8c3ab318eaee5a3326
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57f772f25c5ce2bd870d6f8c3ab318eaee5a3326" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nrdudaev/arcade-scoreboard 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" "+57f772f25c5ce2bd870d6f8c3ab318eaee5a3326" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]   Downloaded rand_distr v0.6.0
[INFO] [stderr]   Downloaded redis v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+57f772f25c5ce2bd870d6f8c3ab318eaee5a3326" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 832afd1aeeb3749cace1b74741c7fd2a1ede8650c8e3715ad11655628bbad068
[INFO] running `Command { std: "docker" "start" "-a" "832afd1aeeb3749cace1b74741c7fd2a1ede8650c8e3715ad11655628bbad068", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "832afd1aeeb3749cace1b74741c7fd2a1ede8650c8e3715ad11655628bbad068", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "832afd1aeeb3749cace1b74741c7fd2a1ede8650c8e3715ad11655628bbad068", kill_on_drop: false }`
[INFO] [stdout] 832afd1aeeb3749cace1b74741c7fd2a1ede8650c8e3715ad11655628bbad068
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+57f772f25c5ce2bd870d6f8c3ab318eaee5a3326" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b19bf6110993c99f11de8c8b73aeb834736644113b7855425140fedd86d6d81d
[INFO] running `Command { std: "docker" "start" "-a" "b19bf6110993c99f11de8c8b73aeb834736644113b7855425140fedd86d6d81d", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]    Compiling zerovec-derive v0.11.2
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[INFO] [stderr]    Compiling yoke-derive v0.8.1
[INFO] [stderr]     Checking concurrent-queue v2.5.0
[INFO] [stderr]    Compiling tokio-macros v2.6.1
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]     Checking event-listener v5.4.1
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[INFO] [stderr]     Checking rand v0.10.0
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[INFO] [stderr]     Checking arcade-score v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `oneshot`
[INFO] [stdout]  --> src/bin/server.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |         oneshot,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/server.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let mut range: StreamRangeReply;
[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: unreachable statement
[INFO] [stdout]   --> src/bin/server.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | /     loop {
[INFO] [stdout] 30 | |         let (socket, _) = listener.accept().await.unwrap();
[INFO] [stdout] 31 | |         let tx_clone = tx.clone();
[INFO] [stdout] 32 | |         let player_id_clone = player_id;
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |         });
[INFO] [stdout] 37 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 38 |       t_redis.await;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/server.rs:22:14
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let (tx, mut rx) = mpsc::channel::<(String, mpsc::Sender<String>, u64)>(1024);
[INFO] [stdout]    |              ----^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_redis`
[INFO] [stdout]   --> src/bin/server.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let t_redis = tokio::spawn(async move {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_t_redis`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/bin/server.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |             Err(e) => {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::RngExt`
[INFO] [stdout]   --> src/bin/client.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use rand::RngExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/client.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut stdout = io::stdout();
[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/bin/client.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut connection: TcpStream;
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stdout`
[INFO] [stdout]   --> src/bin/client.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut stdout = io::stdout();
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stdout`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `initials` is never read
[INFO] [stdout]   --> src/bin/client.rs:75:24
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let mut initials = String::new();
[INFO] [stdout]    |                        ^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 83 |         initials = from_utf8(&buf[0..n]).expect("failed to convert [u8] to string").trim().to_string();
[INFO] [stdout]    |         -------- `initials` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     t_redis.await;
[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] 38 |     let _ = t_redis.await;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     stdout.write_all(format!("player {} connected\n", player_id).as_bytes()).await;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let _ = stdout.write_all(format!("player {} connected\n", player_id).as_bytes()).await;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:50:21
[INFO] [stdout]    |
[INFO] [stdout] 50 |                     stdout.write_all(format!("Player {player_id} left the game.\n").as_bytes()).await;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 50 |                     let _ = stdout.write_all(format!("Player {player_id} left the game.\n").as_bytes()).await;
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 stdout.write_all(format!("Player {player_id} left the game.\n").as_bytes()).await;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 let _ = stdout.write_all(format!("Player {player_id} left the game.\n").as_bytes()).await;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |         tx.send((entry, tx_scb, player_id)).await;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let _ = tx.send((entry, tx_scb, player_id)).await;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     redis_connection.flushall::<()>().await;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 80 |     let _ = redis_connection.flushall::<()>().await;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |         stdout.write_all(format!("player {player_id}: {initials}  {score}\n").as_bytes()).await;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let _ = stdout.write_all(format!("player {player_id}: {initials}  {score}\n").as_bytes()).await;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 | /         redis_connection.xadd::<&str, u64, &str, u64, ()>(
[INFO] [stdout] 87 | |             "scoreboard",
[INFO] [stdout] 88 | |             current_entry_number,
[INFO] [stdout] 89 | |             &[(initials, score)]
[INFO] [stdout] 90 | |         ).await;
[INFO] [stdout]    | |_______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let _ = redis_connection.xadd::<&str, u64, &str, u64, ()>(
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/server.rs:108:9
[INFO] [stdout]     |
[INFO] [stdout] 108 |         tx_scb.send(return_scoreboard_string).await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let _ = tx_scb.send(return_scoreboard_string).await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/client.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     task.await;
[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] 51 |     let _ = task.await;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/client.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         connection.write_all(initials_and_score.as_bytes()).await;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let _ = connection.write_all(initials_and_score.as_bytes()).await;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/client.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |             stdout.write_all(b"Initials must be three symbols long, try again:").await;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 87 |             let _ = stdout.write_all(b"Initials must be three symbols long, try again:").await;
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/client.rs:91:13
[INFO] [stdout]    |
[INFO] [stdout] 91 |             stdout.write_all(b"Initials must consist of only letters and numbers, try again:").await;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 91 |             let _ = stdout.write_all(b"Initials must consist of only letters and numbers, try again:").await;
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:153:5
[INFO] [stdout]     |
[INFO] [stdout] 153 |     stdout.write_all(b"\n\n").await;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 153 |     let _ = stdout.write_all(b"\n\n").await;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 | ...   stdout.write_all(format!("{left_spaces}{}  {}    {}", i + 1, scoreboard[scoreboard.len() - i - 1].0, scoreboard[scoreboard.len() - i - 1].1).as_bytes()).await;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 158 |             let _ = stdout.write_all(format!("{left_spaces}{}  {}    {}", i + 1, scoreboard[scoreboard.len() - i - 1].0, scoreboard[scoreboard.len() - i - 1].1).as_bytes()).await;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:160:17
[INFO] [stdout]     |
[INFO] [stdout] 160 |                 stdout.write_all(b" <-").await;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 160 |                 let _ = stdout.write_all(b" <-").await;
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |             stdout.write_all(b"\n").await;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 162 |             let _ = stdout.write_all(b"\n").await;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:166:13
[INFO] [stdout]     |
[INFO] [stdout] 166 |             stdout.write_all(format!("\n{left_spaces}     - - -\n").as_bytes()).await;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 166 |             let _ = stdout.write_all(format!("\n{left_spaces}     - - -\n").as_bytes()).await;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:171:13
[INFO] [stdout]     |
[INFO] [stdout] 171 | ...   stdout.write_all(format!("{left_spaces}{}  {}    {}\n", i + 1, scoreboard[scoreboard.len() - i - 1].0, scoreboard[scoreboard.len() - i - 1].1).as_bytes()).await;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 171 |             let _ = stdout.write_all(format!("{left_spaces}{}  {}    {}\n", i + 1, scoreboard[scoreboard.len() - i - 1].0, scoreboard[scoreboard.len() - i - 1].1).as_bytes()).await;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:174:9
[INFO] [stdout]     |
[INFO] [stdout] 174 |         stdout.write_all(format!("\n{left_spaces}     - - -\n\n").as_bytes()).await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 174 |         let _ = stdout.write_all(format!("\n{left_spaces}     - - -\n\n").as_bytes()).await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         stdout.write_all(format!("{left_spaces}{position}  {initials}    {score}\n").as_bytes()).await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 176 |         let _ = stdout.write_all(format!("{left_spaces}{position}  {initials}    {score}\n").as_bytes()).await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:179:13
[INFO] [stdout]     |
[INFO] [stdout] 179 |             stdout.write_all(format!("\n{left_spaces}     - - -\n").as_bytes()).await;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 179 |             let _ = stdout.write_all(format!("\n{left_spaces}     - - -\n").as_bytes()).await;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:182:5
[INFO] [stdout]     |
[INFO] [stdout] 182 |     stdout.write_all(b"\n\n").await;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 182 |     let _ = stdout.write_all(b"\n\n").await;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `oneshot`
[INFO] [stdout]  --> src/bin/server.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |         oneshot,
[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: `rand::RngExt`
[INFO] [stdout]   --> src/bin/client.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use rand::RngExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/client.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut stdout = io::stdout();
[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/bin/client.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut connection: TcpStream;
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stdout`
[INFO] [stdout]   --> src/bin/client.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut stdout = io::stdout();
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stdout`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `initials` is never read
[INFO] [stdout]   --> src/bin/client.rs:75:24
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let mut initials = String::new();
[INFO] [stdout]    |                        ^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 83 |         initials = from_utf8(&buf[0..n]).expect("failed to convert [u8] to string").trim().to_string();
[INFO] [stdout]    |         -------- `initials` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/client.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     task.await;
[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] 51 |     let _ = task.await;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/client.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         connection.write_all(initials_and_score.as_bytes()).await;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let _ = connection.write_all(initials_and_score.as_bytes()).await;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/client.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |             stdout.write_all(b"Initials must be three symbols long, try again:").await;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 87 |             let _ = stdout.write_all(b"Initials must be three symbols long, try again:").await;
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/client.rs:91:13
[INFO] [stdout]    |
[INFO] [stdout] 91 |             stdout.write_all(b"Initials must consist of only letters and numbers, try again:").await;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 91 |             let _ = stdout.write_all(b"Initials must consist of only letters and numbers, try again:").await;
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:153:5
[INFO] [stdout]     |
[INFO] [stdout] 153 |     stdout.write_all(b"\n\n").await;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 153 |     let _ = stdout.write_all(b"\n\n").await;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 | ...   stdout.write_all(format!("{left_spaces}{}  {}    {}", i + 1, scoreboard[scoreboard.len() - i - 1].0, scoreboard[scoreboard.len() - i - 1].1).as_bytes()).await;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 158 |             let _ = stdout.write_all(format!("{left_spaces}{}  {}    {}", i + 1, scoreboard[scoreboard.len() - i - 1].0, scoreboard[scoreboard.len() - i - 1].1).as_bytes()).await;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:160:17
[INFO] [stdout]     |
[INFO] [stdout] 160 |                 stdout.write_all(b" <-").await;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 160 |                 let _ = stdout.write_all(b" <-").await;
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |             stdout.write_all(b"\n").await;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 162 |             let _ = stdout.write_all(b"\n").await;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:166:13
[INFO] [stdout]     |
[INFO] [stdout] 166 |             stdout.write_all(format!("\n{left_spaces}     - - -\n").as_bytes()).await;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 166 |             let _ = stdout.write_all(format!("\n{left_spaces}     - - -\n").as_bytes()).await;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:171:13
[INFO] [stdout]     |
[INFO] [stdout] 171 | ...   stdout.write_all(format!("{left_spaces}{}  {}    {}\n", i + 1, scoreboard[scoreboard.len() - i - 1].0, scoreboard[scoreboard.len() - i - 1].1).as_bytes()).await;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 171 |             let _ = stdout.write_all(format!("{left_spaces}{}  {}    {}\n", i + 1, scoreboard[scoreboard.len() - i - 1].0, scoreboard[scoreboard.len() - i - 1].1).as_bytes()).await;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:174:9
[INFO] [stdout]     |
[INFO] [stdout] 174 |         stdout.write_all(format!("\n{left_spaces}     - - -\n\n").as_bytes()).await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 174 |         let _ = stdout.write_all(format!("\n{left_spaces}     - - -\n\n").as_bytes()).await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         stdout.write_all(format!("{left_spaces}{position}  {initials}    {score}\n").as_bytes()).await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 176 |         let _ = stdout.write_all(format!("{left_spaces}{position}  {initials}    {score}\n").as_bytes()).await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:179:13
[INFO] [stdout]     |
[INFO] [stdout] 179 |             stdout.write_all(format!("\n{left_spaces}     - - -\n").as_bytes()).await;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 179 |             let _ = stdout.write_all(format!("\n{left_spaces}     - - -\n").as_bytes()).await;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/client.rs:182:5
[INFO] [stdout]     |
[INFO] [stdout] 182 |     stdout.write_all(b"\n\n").await;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 182 |     let _ = stdout.write_all(b"\n\n").await;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/server.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let mut range: StreamRangeReply;
[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: unreachable statement
[INFO] [stdout]   --> src/bin/server.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | /     loop {
[INFO] [stdout] 30 | |         let (socket, _) = listener.accept().await.unwrap();
[INFO] [stdout] 31 | |         let tx_clone = tx.clone();
[INFO] [stdout] 32 | |         let player_id_clone = player_id;
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |         });
[INFO] [stdout] 37 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 38 |       t_redis.await;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/server.rs:22:14
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let (tx, mut rx) = mpsc::channel::<(String, mpsc::Sender<String>, u64)>(1024);
[INFO] [stdout]    |              ----^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_redis`
[INFO] [stdout]   --> src/bin/server.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let t_redis = tokio::spawn(async move {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_t_redis`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/bin/server.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |             Err(e) => {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     t_redis.await;
[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] 38 |     let _ = t_redis.await;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     stdout.write_all(format!("player {} connected\n", player_id).as_bytes()).await;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let _ = stdout.write_all(format!("player {} connected\n", player_id).as_bytes()).await;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:50:21
[INFO] [stdout]    |
[INFO] [stdout] 50 |                     stdout.write_all(format!("Player {player_id} left the game.\n").as_bytes()).await;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 50 |                     let _ = stdout.write_all(format!("Player {player_id} left the game.\n").as_bytes()).await;
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 stdout.write_all(format!("Player {player_id} left the game.\n").as_bytes()).await;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 let _ = stdout.write_all(format!("Player {player_id} left the game.\n").as_bytes()).await;
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |         tx.send((entry, tx_scb, player_id)).await;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let _ = tx.send((entry, tx_scb, player_id)).await;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     redis_connection.flushall::<()>().await;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 80 |     let _ = redis_connection.flushall::<()>().await;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |         stdout.write_all(format!("player {player_id}: {initials}  {score}\n").as_bytes()).await;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let _ = stdout.write_all(format!("player {player_id}: {initials}  {score}\n").as_bytes()).await;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/server.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 | /         redis_connection.xadd::<&str, u64, &str, u64, ()>(
[INFO] [stdout] 87 | |             "scoreboard",
[INFO] [stdout] 88 | |             current_entry_number,
[INFO] [stdout] 89 | |             &[(initials, score)]
[INFO] [stdout] 90 | |         ).await;
[INFO] [stdout]    | |_______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let _ = redis_connection.xadd::<&str, u64, &str, u64, ()>(
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/server.rs:108:9
[INFO] [stdout]     |
[INFO] [stdout] 108 |         tx_scb.send(return_scoreboard_string).await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let _ = tx_scb.send(return_scoreboard_string).await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 37.80s
[INFO] running `Command { std: "docker" "inspect" "b19bf6110993c99f11de8c8b73aeb834736644113b7855425140fedd86d6d81d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b19bf6110993c99f11de8c8b73aeb834736644113b7855425140fedd86d6d81d", kill_on_drop: false }`
[INFO] [stdout] b19bf6110993c99f11de8c8b73aeb834736644113b7855425140fedd86d6d81d
