[INFO] cloning repository https://github.com/NenX/NenX-codecrafters-bittorrent-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NenX/NenX-codecrafters-bittorrent-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNenX%2FNenX-codecrafters-bittorrent-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNenX%2FNenX-codecrafters-bittorrent-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 19d7ae5fdfd18a3c758ed05d03dbd536d4615969
[INFO] checking NenX/NenX-codecrafters-bittorrent-rust against master#e1613686e0efc80a1a18b1263625450a8de3fb04 for pr-154492-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNenX%2FNenX-codecrafters-bittorrent-rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/NenX/NenX-codecrafters-bittorrent-rust
[INFO] finished tweaking git repo https://github.com/NenX/NenX-codecrafters-bittorrent-rust
[INFO] tweaked toml for git repo https://github.com/NenX/NenX-codecrafters-bittorrent-rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/NenX/NenX-codecrafters-bittorrent-rust on toolchain e1613686e0efc80a1a18b1263625450a8de3fb04
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/NenX/NenX-codecrafters-bittorrent-rust 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" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded windows-targets v0.48.4
[INFO] [stderr]   Downloaded anstyle-query v1.0.0
[INFO] [stderr]   Downloaded serde_bencode v0.2.3
[INFO] [stderr]   Downloaded anstyle-wincon v1.0.2
[INFO] [stderr]   Downloaded anstyle v1.0.1
[INFO] [stderr]   Downloaded serde_bytes v0.11.12
[INFO] [stderr]   Downloaded errno v0.3.2
[INFO] [stderr]   Downloaded clap_lex v0.5.0
[INFO] [stderr]   Downloaded is-terminal v0.4.9
[INFO] [stderr]   Downloaded fastrand v2.0.0
[INFO] [stderr]   Downloaded cpufeatures v0.2.9
[INFO] [stderr]   Downloaded pkg-config v0.3.27
[INFO] [stderr]   Downloaded anstyle-parse v0.2.1
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.37
[INFO] [stderr]   Downloaded anstream v0.3.2
[INFO] [stderr]   Downloaded clap_derive v4.3.12
[INFO] [stderr]   Downloaded pin-project-lite v0.2.12
[INFO] [stderr]   Downloaded ipnet v2.8.0
[INFO] [stderr]   Downloaded ryu v1.0.15
[INFO] [stderr]   Downloaded clap v4.3.22
[INFO] [stderr]   Downloaded openssl-sys v0.9.91
[INFO] [stderr]   Downloaded security-framework v2.9.2
[INFO] [stderr]   Downloaded serde v1.0.183
[INFO] [stderr]   Downloaded bitflags v2.4.0
[INFO] [stderr]   Downloaded cc v1.0.82
[INFO] [stderr]   Downloaded socket2 v0.5.3
[INFO] [stderr]   Downloaded schannel v0.1.22
[INFO] [stderr]   Downloaded serde_json v1.0.105
[INFO] [stderr]   Downloaded clap_builder v4.3.22
[INFO] [stderr]   Downloaded aho-corasick v1.0.4
[INFO] [stderr]   Downloaded reqwest v0.11.18
[INFO] [stderr]   Downloaded tempfile v3.7.1
[INFO] [stderr]   Downloaded security-framework-sys v2.9.1
[INFO] [stderr]   Downloaded regex v1.9.3
[INFO] [stderr]   Downloaded openssl v0.10.56
[INFO] [stderr]   Downloaded itoa v1.0.9
[INFO] [stderr]   Downloaded errno-dragonfly v0.1.2
[INFO] [stderr]   Downloaded regex-syntax v0.7.4
[INFO] [stderr]   Downloaded rustix v0.38.8
[INFO] [stderr]   Downloaded serde_derive v1.0.183
[INFO] [stderr]   Downloaded windows_x86_64_gnullvm v0.48.4
[INFO] [stderr]   Downloaded windows_aarch64_gnullvm v0.48.4
[INFO] [stderr]   Downloaded regex-automata v0.3.6
[INFO] [stderr]   Downloaded tokio v1.32.0
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.48.4
[INFO] [stderr]   Downloaded web-sys v0.3.64
[INFO] [stderr]   Downloaded windows_i686_msvc v0.48.4
[INFO] [stderr]   Downloaded windows_i686_gnu v0.48.4
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.48.4
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.48.4
[INFO] [stderr]   Downloaded linux-raw-sys v0.4.5
[INFO] [stderr]   Downloaded encoding_rs v0.8.32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7cae0850ac4f212fed5c668ddb6e8bcc146e05c6b804381b42489ba5ba82980a
[INFO] running `Command { std: "docker" "start" "-a" "7cae0850ac4f212fed5c668ddb6e8bcc146e05c6b804381b42489ba5ba82980a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7cae0850ac4f212fed5c668ddb6e8bcc146e05c6b804381b42489ba5ba82980a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cae0850ac4f212fed5c668ddb6e8bcc146e05c6b804381b42489ba5ba82980a", kill_on_drop: false }`
[INFO] [stdout] 7cae0850ac4f212fed5c668ddb6e8bcc146e05c6b804381b42489ba5ba82980a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e54d8b1c7115c82e7597456909c90cadc2d76f78f1d521cf02489442421c64f0
[INFO] running `Command { std: "docker" "start" "-a" "e54d8b1c7115c82e7597456909c90cadc2d76f78f1d521cf02489442421c64f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.87
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]     Checking pin-project-lite v0.2.12
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking socket2 v0.5.3
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling serde v1.0.183
[INFO] [stderr]    Compiling rustix v0.38.8
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling openssl v0.10.56
[INFO] [stderr]     Checking bitflags v2.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.183
[INFO] [stderr]     Checking linux-raw-sys v0.4.5
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling cc v1.0.82
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking try-lock v0.2.4
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]     Checking form_urlencoded v1.2.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking anstyle-parse v0.2.1
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking anstyle v1.0.1
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking anstyle-query v1.0.0
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]    Compiling serde_json v1.0.105
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking regex-syntax v0.7.4
[INFO] [stderr]     Checking clap_lex v0.5.0
[INFO] [stderr]     Checking encoding_rs v0.8.32
[INFO] [stderr]     Checking aho-corasick v1.0.4
[INFO] [stderr]     Checking cpufeatures v0.2.9
[INFO] [stderr]     Checking ipnet v2.8.0
[INFO] [stderr]     Checking fastrand v2.0.0
[INFO] [stderr]     Checking base64 v0.21.2
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling openssl-sys v0.9.91
[INFO] [stderr]     Checking idna v0.4.0
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking url v2.4.0
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha1 v0.10.5
[INFO] [stderr]     Checking regex-automata v0.3.6
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking tempfile v3.7.1
[INFO] [stderr]     Checking anstream v0.3.2
[INFO] [stderr]     Checking clap_builder v4.3.22
[INFO] [stderr]    Compiling thiserror-impl v1.0.38
[INFO] [stderr]     Checking regex v1.9.3
[INFO] [stderr]     Checking serde_bytes v0.11.12
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde_bencode v0.2.3
[INFO] [stderr]     Checking thiserror v1.0.38
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling clap_derive v4.3.12
[INFO] [stderr]     Checking tokio v1.32.0
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking clap v4.3.22
[INFO] [stderr]     Checking tokio-util v0.7.12
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking h2 v0.3.20
[INFO] [stderr]     Checking hyper v0.14.27
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.18
[INFO] [stderr]     Checking bittorrent-starter-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `io::AsyncWriteExt`
[INFO] [stdout]  --> src/my_impl/my_connect_torrent.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tokio::{fs, io::AsyncWriteExt, net::TcpStream};
[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: `std::collections::HashMap`
[INFO] [stdout]  --> src/my_impl/my_extension_metadata.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/my_impl/my_message.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MyTorrent`
[INFO] [stdout]  --> src/my_impl/my_message.rs:5:54
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::{MyExtHandshakePayload, MyRequestPayload, MyTorrent, MyTorrentInfo};
[INFO] [stdout]   |                                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `my_message_magnet::*`
[INFO] [stdout]   --> src/my_impl/mod.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub use my_message_magnet::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::AsyncWriteExt`
[INFO] [stdout]  --> src/my_impl/my_connect_torrent.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tokio::{fs, io::AsyncWriteExt, net::TcpStream};
[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: `std::collections::HashMap`
[INFO] [stdout]  --> src/my_impl/my_extension_metadata.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/my_impl/my_extension_metadata.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/my_impl/my_message.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MyTorrent`
[INFO] [stdout]  --> src/my_impl/my_message.rs:5:54
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::{MyExtHandshakePayload, MyRequestPayload, MyTorrent, MyTorrentInfo};
[INFO] [stdout]   |                                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `my_message_magnet::*`
[INFO] [stdout]   --> src/my_impl/mod.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub use my_message_magnet::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/task/handshake_task.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let (mut peer_framed, payload) = conn.magnet_pre_download().await?;
[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/task/handshake_task.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let (mut peer_framed, payload) = conn.magnet_pre_download().await?;
[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: unused variable: `files`
[INFO] [stdout]   --> src/my_impl/my_torrent.rs:35:44
[INFO] [stdout]    |
[INFO] [stdout] 35 |             MyTorrentInfoKeys::MultiFile { files } => None,
[INFO] [stdout]    |                                            ^^^^^ help: try ignoring the field: `files: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/my_impl/my_extension_handshake.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let s = serde_bencode::to_string(&m);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/my_impl/my_message_framed.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let a = f.decode(&mut BytesMut::from_iter(a.iter()));
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer_framed`
[INFO] [stdout]   --> src/task/handshake_task.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let (mut peer_framed, payload) = conn.magnet_pre_download().await?;
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_peer_framed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `payload`
[INFO] [stdout]   --> src/task/handshake_task.rs:17:27
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let (mut peer_framed, payload) = conn.magnet_pre_download().await?;
[INFO] [stdout]    |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_payload`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `slice`
[INFO] [stdout]    --> src/my_impl/my_message_framed.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |             let slice = a.payload.split_at(len - 5);
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/my_impl/my_message_framed.rs:128:17
[INFO] [stdout]     |
[INFO] [stdout] 128 |             let a = frame.next().await.context("read message").unwrap().unwrap();
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/my_impl/my_message_framed.rs:105:17
[INFO] [stdout]     |
[INFO] [stdout] 105 |             let a = frame.next().await.context("read message").unwrap().unwrap();
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `files`
[INFO] [stdout]   --> src/my_impl/my_torrent.rs:35:44
[INFO] [stdout]    |
[INFO] [stdout] 35 |             MyTorrentInfoKeys::MultiFile { files } => None,
[INFO] [stdout]    |                                            ^^^^^ help: try ignoring the field: `files: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer_framed`
[INFO] [stdout]   --> src/task/handshake_task.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let (mut peer_framed, payload) = conn.magnet_pre_download().await?;
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_peer_framed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `payload`
[INFO] [stdout]   --> src/task/handshake_task.rs:17:27
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let (mut peer_framed, payload) = conn.magnet_pre_download().await?;
[INFO] [stdout]    |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_payload`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tests/playground.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let a: u8 = b'a';
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 36.06s
[INFO] running `Command { std: "docker" "inspect" "e54d8b1c7115c82e7597456909c90cadc2d76f78f1d521cf02489442421c64f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e54d8b1c7115c82e7597456909c90cadc2d76f78f1d521cf02489442421c64f0", kill_on_drop: false }`
[INFO] [stdout] e54d8b1c7115c82e7597456909c90cadc2d76f78f1d521cf02489442421c64f0
