[INFO] cloning repository https://github.com/0queue/boosttorrent2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0queue/boosttorrent2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0queue%2Fboosttorrent2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0queue%2Fboosttorrent2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec8523deb50ee9f4a00664aab31a6df150ee7cfd
[INFO] checking 0queue/boosttorrent2 against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0queue%2Fboosttorrent2" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/0queue/boosttorrent2 on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/0queue/boosttorrent2
[INFO] finished tweaking git repo https://github.com/0queue/boosttorrent2
[INFO] tweaked toml for git repo https://github.com/0queue/boosttorrent2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/0queue/boosttorrent2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] 9a8c47e5a30fe7b4ec56e6ee5fdf52738851a8a5ead0c6b32c090a7d1b3ba60d
[INFO] running `Command { std: "docker" "start" "-a" "9a8c47e5a30fe7b4ec56e6ee5fdf52738851a8a5ead0c6b32c090a7d1b3ba60d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a8c47e5a30fe7b4ec56e6ee5fdf52738851a8a5ead0c6b32c090a7d1b3ba60d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a8c47e5a30fe7b4ec56e6ee5fdf52738851a8a5ead0c6b32c090a7d1b3ba60d", kill_on_drop: false }`
[INFO] [stdout] 9a8c47e5a30fe7b4ec56e6ee5fdf52738851a8a5ead0c6b32c090a7d1b3ba60d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5aca08365d7f362e63b75bfd9172f8cfb5ca491a11231c2efc883f56bbf025f9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5aca08365d7f362e63b75bfd9172f8cfb5ca491a11231c2efc883f56bbf025f9", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
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[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/boostencode/parse/mod.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |         '0'...'9' => parse_bstring(bytes),
[INFO] [stdout]    |            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/metainfo/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Receiver`
[INFO] [stdout]  --> src/server/mod.rs:2:36
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures::sync::mpsc::{channel, Receiver, Sender};
[INFO] [stdout]   |                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::default::Default`
[INFO] [stdout]   --> src/server/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]   --> src/server/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::ops::Deref;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `future`, `io::Error`
[INFO] [stdout]   --> src/server/mod.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     io::Error,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |         future,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Receiver`
[INFO] [stdout]  --> src/peer/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Receiver,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncSink`
[INFO] [stdout]   --> src/peer/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         AsyncSink,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `derive_error::Error`
[INFO] [stdout]  --> src/peer/message.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use derive_error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/boostencode/parse/mod.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |         '0'...'9' => parse_bstring(bytes),
[INFO] [stdout]    |            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/metainfo/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `RwLock`
[INFO] [stdout]   --> src/tracker/test.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Arc,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 12 |     RwLock,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Receiver`
[INFO] [stdout]  --> src/server/mod.rs:2:36
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures::sync::mpsc::{channel, Receiver, Sender};
[INFO] [stdout]   |                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::default::Default`
[INFO] [stdout]   --> src/server/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]   --> src/server/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::ops::Deref;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `future`, `io::Error`
[INFO] [stdout]   --> src/server/mod.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     io::Error,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |         future,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Receiver`
[INFO] [stdout]  --> src/peer/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Receiver,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncSink`
[INFO] [stdout]   --> src/peer/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         AsyncSink,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `derive_error::Error`
[INFO] [stdout]  --> src/peer/message.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use derive_error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Failure`
[INFO] [stdout]   --> src/tracker/mod.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     Failure(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Stopped`
[INFO] [stdout]   --> src/tracker/mod.rs:99:5
[INFO] [stdout]    |
[INFO] [stdout] 99 |     Stopped,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Completed`
[INFO] [stdout]    --> src/tracker/mod.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     Completed,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cancel`
[INFO] [stdout]    --> src/tracker/mod.rs:232:12
[INFO] [stdout]     |
[INFO] [stdout] 232 |     pub fn cancel(&mut self, left: u64, uploaded: u64, downloaded: u64) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `finish`
[INFO] [stdout]    --> src/tracker/mod.rs:237:12
[INFO] [stdout]     |
[INFO] [stdout] 237 |     pub fn finish(&mut self, left: u64, uploaded: u64, downloaded: u64) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `refresh`
[INFO] [stdout]    --> src/tracker/mod.rs:242:12
[INFO] [stdout]     |
[INFO] [stdout] 242 |     pub fn refresh(&mut self, left: u64, uploaded: u64, downloaded: u64) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data`
[INFO] [stdout]  --> src/piece/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     data: Vec<u8>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `hasher`
[INFO] [stdout]   --> src/piece/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     hasher: Sha1,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `hash`
[INFO] [stdout]   --> src/piece/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     hash: [u8; 20],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sub_pieces`
[INFO] [stdout]   --> src/piece/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     sub_pieces: BitVec
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/piece/mod.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(piece_size: u32, piece_hash: [u8;20]) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `verify`
[INFO] [stdout]   --> src/piece/mod.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn verify(&mut self) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `uploaded_sender`
[INFO] [stdout]   --> src/peer/mod.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     uploaded_sender: Sender<u32>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `downloaded_sender`
[INFO] [stdout]   --> src/peer/mod.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     downloaded_sender: Sender<u32>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `finished_piece_sender`
[INFO] [stdout]   --> src/peer/mod.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     finished_piece_sender: Sender<(Piece, Sender<Piece>, BitVec)>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `peers_pieces`
[INFO] [stdout]   --> src/peer/mod.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     peers_pieces: BitVec,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/boostencode/mod.rs:137:25
[INFO] [stdout]     |
[INFO] [stdout] 137 |                         write!(f, ", ");
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/boostencode/mod.rs:140:21
[INFO] [stdout]     |
[INFO] [stdout] 140 |                     write!(f, "{}", val);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/boostencode/mod.rs:147:17
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 writeln!(f, "{{");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/boostencode/mod.rs:149:21
[INFO] [stdout]     |
[INFO] [stdout] 149 |                     writeln!(f, "  {} => {}", str::from_utf8(k).unwrap_or("[...bytes...]"), v);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Failure`
[INFO] [stdout]   --> src/tracker/mod.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     Failure(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Stopped`
[INFO] [stdout]   --> src/tracker/mod.rs:99:5
[INFO] [stdout]    |
[INFO] [stdout] 99 |     Stopped,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Completed`
[INFO] [stdout]    --> src/tracker/mod.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     Completed,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cancel`
[INFO] [stdout]    --> src/tracker/mod.rs:232:12
[INFO] [stdout]     |
[INFO] [stdout] 232 |     pub fn cancel(&mut self, left: u64, uploaded: u64, downloaded: u64) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `finish`
[INFO] [stdout]    --> src/tracker/mod.rs:237:12
[INFO] [stdout]     |
[INFO] [stdout] 237 |     pub fn finish(&mut self, left: u64, uploaded: u64, downloaded: u64) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `refresh`
[INFO] [stdout]    --> src/tracker/mod.rs:242:12
[INFO] [stdout]     |
[INFO] [stdout] 242 |     pub fn refresh(&mut self, left: u64, uploaded: u64, downloaded: u64) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data`
[INFO] [stdout]  --> src/piece/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     data: Vec<u8>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `hasher`
[INFO] [stdout]   --> src/piece/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     hasher: Sha1,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `hash`
[INFO] [stdout]   --> src/piece/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     hash: [u8; 20],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sub_pieces`
[INFO] [stdout]   --> src/piece/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     sub_pieces: BitVec
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/piece/mod.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(piece_size: u32, piece_hash: [u8;20]) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `verify`
[INFO] [stdout]   --> src/piece/mod.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn verify(&mut self) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `uploaded_sender`
[INFO] [stdout]   --> src/peer/mod.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     uploaded_sender: Sender<u32>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `downloaded_sender`
[INFO] [stdout]   --> src/peer/mod.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     downloaded_sender: Sender<u32>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `finished_piece_sender`
[INFO] [stdout]   --> src/peer/mod.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     finished_piece_sender: Sender<(Piece, Sender<Piece>, BitVec)>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `peers_pieces`
[INFO] [stdout]   --> src/peer/mod.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     peers_pieces: BitVec,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/boostencode/mod.rs:137:25
[INFO] [stdout]     |
[INFO] [stdout] 137 |                         write!(f, ", ");
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/boostencode/mod.rs:140:21
[INFO] [stdout]     |
[INFO] [stdout] 140 |                     write!(f, "{}", val);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/boostencode/mod.rs:147:17
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 writeln!(f, "{{");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/boostencode/mod.rs:149:21
[INFO] [stdout]     |
[INFO] [stdout] 149 |                     writeln!(f, "  {} => {}", str::from_utf8(k).unwrap_or("[...bytes...]"), v);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.35s
[INFO] running `Command { std: "docker" "inspect" "5aca08365d7f362e63b75bfd9172f8cfb5ca491a11231c2efc883f56bbf025f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5aca08365d7f362e63b75bfd9172f8cfb5ca491a11231c2efc883f56bbf025f9", kill_on_drop: false }`
[INFO] [stdout] 5aca08365d7f362e63b75bfd9172f8cfb5ca491a11231c2efc883f56bbf025f9
