[INFO] cloning repository https://github.com/ArtikGz/mars
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ArtikGz/mars" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArtikGz%2Fmars", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArtikGz%2Fmars'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 26abd94ea835f854f024f368e7d9d6aaeefa5f08
[INFO] checking ArtikGz/mars against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArtikGz%2Fmars" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ArtikGz/mars
[INFO] finished tweaking git repo https://github.com/ArtikGz/mars
[INFO] tweaked toml for git repo https://github.com/ArtikGz/mars written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ArtikGz/mars on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ArtikGz/mars 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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] feb26c0ee6ac5df5bb483b494e9abfc46dc2f898ec8772f0700dd4bd16a39422
[INFO] running `Command { std: "docker" "start" "-a" "feb26c0ee6ac5df5bb483b494e9abfc46dc2f898ec8772f0700dd4bd16a39422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "feb26c0ee6ac5df5bb483b494e9abfc46dc2f898ec8772f0700dd4bd16a39422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "feb26c0ee6ac5df5bb483b494e9abfc46dc2f898ec8772f0700dd4bd16a39422", kill_on_drop: false }`
[INFO] [stdout] feb26c0ee6ac5df5bb483b494e9abfc46dc2f898ec8772f0700dd4bd16a39422
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4db89d69c665158c0d2a2ed3bc6697b27df95a858742a8eb7dfc45bbe2736d88
[INFO] running `Command { std: "docker" "start" "-a" "4db89d69c665158c0d2a2ed3bc6697b27df95a858742a8eb7dfc45bbe2736d88", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.68
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking md-5 v0.10.6
[INFO] [stderr]     Checking uuid v1.9.1
[INFO] [stderr]    Compiling tokio-macros v2.3.0
[INFO] [stderr]     Checking tokio v1.38.0
[INFO] [stderr]     Checking mars v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BlockPos`, `PerlinNoiseGenerator`, and `self`
[INFO] [stdout]  --> src/blocks/chunk.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 |     block::{self, Block, BlockPos},
[INFO] [stdout]   |                          ^^^^^^^^
[INFO] [stdout] 3 |     perlin::{self, PerlinNoiseGenerator},
[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: `crate::log`
[INFO] [stdout]  --> src/blocks/section.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::log;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `distributions::uniform::SampleRange` and `prelude::*`
[INFO] [stdout]  --> src/blocks/perlin.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{distributions::uniform::SampleRange, prelude::*};
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand_chacha::ChaCha8Rng`
[INFO] [stdout]  --> src/blocks/perlin.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand_chacha::ChaCha8Rng;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncWrite`
[INFO] [stdout]  --> src/tcp/mod.rs:4:42
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::io::{AsyncRead, AsyncReadExt, AsyncWrite, AsyncWriteExt};
[INFO] [stdout]   |                                          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/tcp/client.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Take`
[INFO] [stdout]   --> src/tcp/client.rs:11:85
[INFO] [stdout]    |
[INFO] [stdout] 11 | use tokio::io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufReader, BufWriter, Take};
[INFO] [stdout]    |                                                                                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::select`
[INFO] [stdout]   --> src/tcp/client.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use tokio::select;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RwLock`
[INFO] [stdout]   --> src/tcp/client.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 | use tokio::sync::{Mutex, RwLock};
[INFO] [stdout]    |                          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ChunkSection`
[INFO] [stdout]  --> src/tcp/mapper.rs:9:25
[INFO] [stdout]   |
[INFO] [stdout] 9 |         section::{self, ChunkSection},
[INFO] [stdout]   |                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::io::Take`
[INFO] [stdout]  --> src/tcp/packet.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio::io::Take;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `measure`
[INFO] [stdout]  --> src/tcp/server.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::{log, measure};
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RwLock`
[INFO] [stdout]   --> src/tcp/server.rs:11:25
[INFO] [stdout]    |
[INFO] [stdout] 11 | use tokio::sync::{mpsc, RwLock};
[INFO] [stdout]    |                         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BlockPos`, `PerlinNoiseGenerator`, and `self`
[INFO] [stdout]  --> src/blocks/chunk.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 |     block::{self, Block, BlockPos},
[INFO] [stdout]   |                          ^^^^^^^^
[INFO] [stdout] 3 |     perlin::{self, PerlinNoiseGenerator},
[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: `crate::log`
[INFO] [stdout]  --> src/blocks/section.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::log;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `distributions::uniform::SampleRange` and `prelude::*`
[INFO] [stdout]  --> src/blocks/perlin.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{distributions::uniform::SampleRange, prelude::*};
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand_chacha::ChaCha8Rng`
[INFO] [stdout]  --> src/blocks/perlin.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand_chacha::ChaCha8Rng;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncWrite`
[INFO] [stdout]  --> src/tcp/mod.rs:4:42
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::io::{AsyncRead, AsyncReadExt, AsyncWrite, AsyncWriteExt};
[INFO] [stdout]   |                                          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/tcp/client.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Take`
[INFO] [stdout]   --> src/tcp/client.rs:11:85
[INFO] [stdout]    |
[INFO] [stdout] 11 | use tokio::io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufReader, BufWriter, Take};
[INFO] [stdout]    |                                                                                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::select`
[INFO] [stdout]   --> src/tcp/client.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use tokio::select;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RwLock`
[INFO] [stdout]   --> src/tcp/client.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 | use tokio::sync::{Mutex, RwLock};
[INFO] [stdout]    |                          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ChunkSection`
[INFO] [stdout]  --> src/tcp/mapper.rs:9:25
[INFO] [stdout]   |
[INFO] [stdout] 9 |         section::{self, ChunkSection},
[INFO] [stdout]   |                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::io::Take`
[INFO] [stdout]  --> src/tcp/packet.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio::io::Take;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `measure`
[INFO] [stdout]  --> src/tcp/server.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::{log, measure};
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RwLock`
[INFO] [stdout]   --> src/tcp/server.rs:11:25
[INFO] [stdout]    |
[INFO] [stdout] 11 | use tokio::sync::{mpsc, RwLock};
[INFO] [stdout]    |                         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/tcp/mod.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Read, Write};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/tcp/mod.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Read, Write};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/tcp/client.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/tcp/client.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/tcp/packet.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::{self, Write};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reader`
[INFO] [stdout]    --> src/tcp/packet.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |         reader: &mut impl AsyncReadOwnExt,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `Position` is never constructed
[INFO] [stdout]   --> src/main.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Position {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `Position` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/tcp/mod.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     async fn write_var_int(&mut self, value: VarInt) -> io::Result<()> {
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout]    = note: `#[warn(async_fn_in_trait)]` on by default
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 65 ~     fn write_var_int(&mut self, value: VarInt) -> impl std::future::Future<Output = io::Result<()>> + Send {async {
[INFO] [stdout] 66 |         let mut value = value;
[INFO] [stdout] ...
[INFO] [stdout] 83 |         Ok(())
[INFO] [stdout] 84 ~     } }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/tcp/mod.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 86 |     async fn write_string(&mut self, value: &str) -> io::Result<()> {
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 86 ~     fn write_string(&mut self, value: &str) -> impl std::future::Future<Output = io::Result<()>> + Send {async {
[INFO] [stdout] 87 |         self.write_var_int(value.len() as VarInt).await?;
[INFO] [stdout] ...
[INFO] [stdout] 90 |         Ok(())
[INFO] [stdout] 91 ~     } }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/tcp/mod.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Read, Write};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/tcp/mod.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Read, Write};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/tcp/client.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/tcp/client.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/tcp/packet.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::{self, Write};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mars` (bin "mars" test) due to 1 previous error; 21 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `reader`
[INFO] [stdout]    --> src/tcp/packet.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |         reader: &mut impl AsyncReadOwnExt,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/tcp/mod.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     async fn write_var_int(&mut self, value: VarInt) -> io::Result<()> {
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout]    = note: `#[warn(async_fn_in_trait)]` on by default
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 65 ~     fn write_var_int(&mut self, value: VarInt) -> impl std::future::Future<Output = io::Result<()>> + Send {async {
[INFO] [stdout] 66 |         let mut value = value;
[INFO] [stdout] ...
[INFO] [stdout] 83 |         Ok(())
[INFO] [stdout] 84 ~     } }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/tcp/mod.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 86 |     async fn write_string(&mut self, value: &str) -> io::Result<()> {
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 86 ~     fn write_string(&mut self, value: &str) -> impl std::future::Future<Output = io::Result<()>> + Send {async {
[INFO] [stdout] 87 |         self.write_var_int(value.len() as VarInt).await?;
[INFO] [stdout] ...
[INFO] [stdout] 90 |         Ok(())
[INFO] [stdout] 91 ~     } }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4db89d69c665158c0d2a2ed3bc6697b27df95a858742a8eb7dfc45bbe2736d88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4db89d69c665158c0d2a2ed3bc6697b27df95a858742a8eb7dfc45bbe2736d88", kill_on_drop: false }`
[INFO] [stdout] 4db89d69c665158c0d2a2ed3bc6697b27df95a858742a8eb7dfc45bbe2736d88
