[INFO] cloning repository https://github.com/dark0ne/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/dark0ne/bittorrent_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdark0ne%2Fbittorrent_rust", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2b33850d57ade82e5973a4f2c03adab65145f968
[INFO] checking dark0ne/bittorrent_rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdark0ne%2Fbittorrent_rust" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
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[INFO] validating manifest of git repo https://github.com/dark0ne/bittorrent_rust on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dark0ne/bittorrent_rust
[INFO] finished tweaking git repo https://github.com/dark0ne/bittorrent_rust
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[INFO] crate git repo https://github.com/dark0ne/bittorrent_rust already has a lockfile, it will not be regenerated
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[INFO] [stdout] warning: unused import: `sink::SinkExt`
[INFO] [stdout]  --> src/main.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use futures::{sink::SinkExt, stream::StreamExt};
[INFO] [stdout]   |               ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hex`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use hex;
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `reqwest` is imported redundantly
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use reqwest;
[INFO] [stdout]   |     ^^^^^^^ the item `reqwest` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/peer.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{self, Cursor, Read};
[INFO] [stdout]   |                             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sink::SinkExt`
[INFO] [stdout]  --> src/main.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use futures::{sink::SinkExt, stream::StreamExt};
[INFO] [stdout]   |               ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hex`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use hex;
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `reqwest` is imported redundantly
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use reqwest;
[INFO] [stdout]   |     ^^^^^^^ the item `reqwest` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/peer.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{self, Cursor, Read};
[INFO] [stdout]   |                             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/peer.rs:120:40
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let error_payload_not_empty = |tag: MessageTag| {
[INFO] [stdout]     |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/peer.rs:129:35
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let error_invalid_size = |tag: MessageTag, len: usize| {
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/peer.rs:120:40
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let error_payload_not_empty = |tag: MessageTag| {
[INFO] [stdout]     |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/peer.rs:129:35
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let error_invalid_size = |tag: MessageTag, len: usize| {
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_file`
[INFO] [stdout]   --> src/main.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |             output_file,
[INFO] [stdout]    |             ^^^^^^^^^^^ help: try ignoring the field: `output_file: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/main.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let index = 0;
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer_address`
[INFO] [stdout]    --> src/main.rs:100:17
[INFO] [stdout]     |
[INFO] [stdout] 100 |             let peer_address = peers
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_peer_address`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stream`
[INFO] [stdout]    --> src/main.rs:135:17
[INFO] [stdout]     |
[INFO] [stdout] 135 |             let stream = streams[0].as_mut().unwrap();
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_file`
[INFO] [stdout]   --> src/main.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |             output_file,
[INFO] [stdout]    |             ^^^^^^^^^^^ help: try ignoring the field: `output_file: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/main.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let index = 0;
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer_address`
[INFO] [stdout]    --> src/main.rs:100:17
[INFO] [stdout]     |
[INFO] [stdout] 100 |             let peer_address = peers
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_peer_address`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stream`
[INFO] [stdout]    --> src/main.rs:135:17
[INFO] [stdout]     |
[INFO] [stdout] 135 |             let stream = streams[0].as_mut().unwrap();
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLOCK_SIZE` is never used
[INFO] [stdout]   --> src/main.rs:49:7
[INFO] [stdout]    |
[INFO] [stdout] 49 | const BLOCK_SIZE: usize = 1 << 14;
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PeerState` is never constructed
[INFO] [stdout]    --> src/peer.rs:343:8
[INFO] [stdout]     |
[INFO] [stdout] 343 | struct PeerState {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/peer.rs:351:8
[INFO] [stdout]     |
[INFO] [stdout] 350 | impl PeerState {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 351 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `interval`, `min_interval`, `tracker_id`, `complete`, and `incomplete` are never read
[INFO] [stdout]   --> src/tracker.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Peers {
[INFO] [stdout]    |     ----- fields in this variant
[INFO] [stdout] 23 |         interval: usize,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 24 |         #[serde(rename = "min interval")]
[INFO] [stdout] 25 |         min_interval: Option<usize>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 26 |         #[serde(rename = "tracker id")]
[INFO] [stdout] 27 |         tracker_id: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 28 |         complete: usize,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 29 |         incomplete: usize,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLOCK_SIZE` is never used
[INFO] [stdout]   --> src/main.rs:49:7
[INFO] [stdout]    |
[INFO] [stdout] 49 | const BLOCK_SIZE: usize = 1 << 14;
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PeerState` is never constructed
[INFO] [stdout]    --> src/peer.rs:343:8
[INFO] [stdout]     |
[INFO] [stdout] 343 | struct PeerState {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/peer.rs:351:8
[INFO] [stdout]     |
[INFO] [stdout] 350 | impl PeerState {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 351 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `interval`, `min_interval`, `tracker_id`, `complete`, and `incomplete` are never read
[INFO] [stdout]   --> src/tracker.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Peers {
[INFO] [stdout]    |     ----- fields in this variant
[INFO] [stdout] 23 |         interval: usize,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 24 |         #[serde(rename = "min interval")]
[INFO] [stdout] 25 |         min_interval: Option<usize>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 26 |         #[serde(rename = "tracker id")]
[INFO] [stdout] 27 |         tracker_id: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 28 |         complete: usize,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 29 |         incomplete: usize,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.30s
[INFO] running `Command { std: "docker" "inspect" "ac137af8949010c5ad4e5d2dc2560dfdbc9a87336a5169751b804f614c6fd8b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac137af8949010c5ad4e5d2dc2560dfdbc9a87336a5169751b804f614c6fd8b3", kill_on_drop: false }`
[INFO] [stdout] ac137af8949010c5ad4e5d2dc2560dfdbc9a87336a5169751b804f614c6fd8b3
[INFO] checking dark0ne/bittorrent_rust against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdark0ne%2Fbittorrent_rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dark0ne/bittorrent_rust on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dark0ne/bittorrent_rust
[INFO] finished tweaking git repo https://github.com/dark0ne/bittorrent_rust
[INFO] tweaked toml for git repo https://github.com/dark0ne/bittorrent_rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/dark0ne/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71032671fab77bca0f8fdc9eb6a45f46c8aa8e6034c6bc9a0c6d8292bfa5779f
[INFO] running `Command { std: "docker" "start" "-a" "71032671fab77bca0f8fdc9eb6a45f46c8aa8e6034c6bc9a0c6d8292bfa5779f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71032671fab77bca0f8fdc9eb6a45f46c8aa8e6034c6bc9a0c6d8292bfa5779f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71032671fab77bca0f8fdc9eb6a45f46c8aa8e6034c6bc9a0c6d8292bfa5779f", kill_on_drop: false }`
[INFO] [stdout] 71032671fab77bca0f8fdc9eb6a45f46c8aa8e6034c6bc9a0c6d8292bfa5779f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11204af4d7659018c40efbcf7d2be7b02cbf6cfc4f53dd42a0fc9b1827375d56
[INFO] running `Command { std: "docker" "start" "-a" "11204af4d7659018c40efbcf7d2be7b02cbf6cfc4f53dd42a0fc9b1827375d56", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `sink::SinkExt`
[INFO] [stdout]  --> src/main.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use futures::{sink::SinkExt, stream::StreamExt};
[INFO] [stdout]   |               ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hex`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use hex;
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `reqwest` is imported redundantly
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use reqwest;
[INFO] [stdout]   |     ^^^^^^^ the item `reqwest` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/peer.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{self, Cursor, Read};
[INFO] [stdout]   |                             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sink::SinkExt`
[INFO] [stdout]  --> src/main.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use futures::{sink::SinkExt, stream::StreamExt};
[INFO] [stdout]   |               ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hex`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use hex;
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `reqwest` is imported redundantly
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use reqwest;
[INFO] [stdout]   |     ^^^^^^^ the item `reqwest` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/peer.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{self, Cursor, Read};
[INFO] [stdout]   |                             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/peer.rs:120:40
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let error_payload_not_empty = |tag: MessageTag| {
[INFO] [stdout]     |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/peer.rs:129:35
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let error_invalid_size = |tag: MessageTag, len: usize| {
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/peer.rs:120:40
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let error_payload_not_empty = |tag: MessageTag| {
[INFO] [stdout]     |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_file`
[INFO] [stdout]   --> src/main.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |             output_file,
[INFO] [stdout]    |             ^^^^^^^^^^^ help: try ignoring the field: `output_file: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/main.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let index = 0;
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer_address`
[INFO] [stdout]    --> src/main.rs:100:17
[INFO] [stdout]     |
[INFO] [stdout] 100 |             let peer_address = peers
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_peer_address`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stream`
[INFO] [stdout]    --> src/main.rs:135:17
[INFO] [stdout]     |
[INFO] [stdout] 135 |             let stream = streams[0].as_mut().unwrap();
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/peer.rs:129:35
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let error_invalid_size = |tag: MessageTag, len: usize| {
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLOCK_SIZE` is never used
[INFO] [stdout]   --> src/main.rs:49:7
[INFO] [stdout]    |
[INFO] [stdout] 49 | const BLOCK_SIZE: usize = 1 << 14;
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PeerState` is never constructed
[INFO] [stdout]    --> src/peer.rs:343:8
[INFO] [stdout]     |
[INFO] [stdout] 343 | struct PeerState {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/peer.rs:351:8
[INFO] [stdout]     |
[INFO] [stdout] 350 | impl PeerState {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 351 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `interval`, `min_interval`, `tracker_id`, `complete`, and `incomplete` are never read
[INFO] [stdout]   --> src/tracker.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Peers {
[INFO] [stdout]    |     ----- fields in this variant
[INFO] [stdout] 23 |         interval: usize,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 24 |         #[serde(rename = "min interval")]
[INFO] [stdout] 25 |         min_interval: Option<usize>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 26 |         #[serde(rename = "tracker id")]
[INFO] [stdout] 27 |         tracker_id: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 28 |         complete: usize,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 29 |         incomplete: usize,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_file`
[INFO] [stdout]   --> src/main.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |             output_file,
[INFO] [stdout]    |             ^^^^^^^^^^^ help: try ignoring the field: `output_file: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/main.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let index = 0;
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer_address`
[INFO] [stdout]    --> src/main.rs:100:17
[INFO] [stdout]     |
[INFO] [stdout] 100 |             let peer_address = peers
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_peer_address`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stream`
[INFO] [stdout]    --> src/main.rs:135:17
[INFO] [stdout]     |
[INFO] [stdout] 135 |             let stream = streams[0].as_mut().unwrap();
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLOCK_SIZE` is never used
[INFO] [stdout]   --> src/main.rs:49:7
[INFO] [stdout]    |
[INFO] [stdout] 49 | const BLOCK_SIZE: usize = 1 << 14;
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PeerState` is never constructed
[INFO] [stdout]    --> src/peer.rs:343:8
[INFO] [stdout]     |
[INFO] [stdout] 343 | struct PeerState {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/peer.rs:351:8
[INFO] [stdout]     |
[INFO] [stdout] 350 | impl PeerState {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 351 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `interval`, `min_interval`, `tracker_id`, `complete`, and `incomplete` are never read
[INFO] [stdout]   --> src/tracker.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Peers {
[INFO] [stdout]    |     ----- fields in this variant
[INFO] [stdout] 23 |         interval: usize,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 24 |         #[serde(rename = "min interval")]
[INFO] [stdout] 25 |         min_interval: Option<usize>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 26 |         #[serde(rename = "tracker id")]
[INFO] [stdout] 27 |         tracker_id: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 28 |         complete: usize,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 29 |         incomplete: usize,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 32.54s
[INFO] running `Command { std: "docker" "inspect" "11204af4d7659018c40efbcf7d2be7b02cbf6cfc4f53dd42a0fc9b1827375d56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11204af4d7659018c40efbcf7d2be7b02cbf6cfc4f53dd42a0fc9b1827375d56", kill_on_drop: false }`
[INFO] [stdout] 11204af4d7659018c40efbcf7d2be7b02cbf6cfc4f53dd42a0fc9b1827375d56