[INFO] cloning repository https://github.com/luoxiaozero/hello-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luoxiaozero/hello-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluoxiaozero%2Fhello-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluoxiaozero%2Fhello-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3192269a9f1fae74d4a10c291ae688be5fb27c60
[INFO] testing luoxiaozero/hello-rust against master#2fd6efc32704647e64d3d646d21c4c68eae100e4 for pr-149852-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluoxiaozero%2Fhello-rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/luoxiaozero/hello-rust
[INFO] finished tweaking git repo https://github.com/luoxiaozero/hello-rust
[INFO] tweaked toml for git repo https://github.com/luoxiaozero/hello-rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/luoxiaozero/hello-rust on toolchain 2fd6efc32704647e64d3d646d21c4c68eae100e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/luoxiaozero/hello-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" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-io v0.3.25
[INFO] [stderr]   Downloaded futures-executor v0.3.25
[INFO] [stderr]   Downloaded bit-set v0.6.0
[INFO] [stderr]   Downloaded async-io v1.9.0
[INFO] [stderr]   Downloaded d3d12 v22.0.0
[INFO] [stderr]   Downloaded gpu-allocator v0.26.0
[INFO] [stderr]   Downloaded wgpu-types v22.0.0
[INFO] [stderr]   Downloaded serde v1.0.140
[INFO] [stderr]   Downloaded pin-project v1.1.6
[INFO] [stderr]   Downloaded serde_json v1.0.82
[INFO] [stderr]   Downloaded futures v0.3.25
[INFO] [stderr]   Downloaded serde_derive v1.0.140
[INFO] [stderr]   Downloaded wgpu v22.1.0
[INFO] [stderr]   Downloaded bytemuck_derive v1.7.1
[INFO] [stderr]   Downloaded regex v1.9.4
[INFO] [stderr]   Downloaded wgpu-core v22.1.0
[INFO] [stderr]   Downloaded bit-vec v0.7.0
[INFO] [stderr]   Downloaded pin-project-internal v1.1.6
[INFO] [stderr]   Downloaded async-global-executor v2.3.0
[INFO] [stderr]   Downloaded polling v2.3.0
[INFO] [stderr]   Downloaded value-bag v1.9.0
[INFO] [stderr]   Downloaded wgpu-hal v22.0.0
[INFO] [stderr]   Downloaded regex-automata v0.3.7
[INFO] [stderr]   Downloaded naga v22.1.0
[INFO] [stderr]   Downloaded metal v0.29.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a9c9902b47cd27b853067ed2b66a34db1ad20aae1bf93d278f0b64370530be8
[INFO] running `Command { std: "docker" "start" "-a" "1a9c9902b47cd27b853067ed2b66a34db1ad20aae1bf93d278f0b64370530be8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a9c9902b47cd27b853067ed2b66a34db1ad20aae1bf93d278f0b64370530be8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a9c9902b47cd27b853067ed2b66a34db1ad20aae1bf93d278f0b64370530be8", kill_on_drop: false }`
[INFO] [stdout] 1a9c9902b47cd27b853067ed2b66a34db1ad20aae1bf93d278f0b64370530be8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc83017c4cb0203e0907f4fcf89dc091eda0d8925b34ceba6c1a913c305a0a9b
[INFO] running `Command { std: "docker" "start" "-a" "cc83017c4cb0203e0907f4fcf89dc091eda0d8925b34ceba6c1a913c305a0a9b", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling proc-macro2 v1.0.88
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling futures-io v0.3.25
[INFO] [stderr]    Compiling cache-padded v1.2.0
[INFO] [stderr]    Compiling fastrand v1.8.0
[INFO] [stderr]    Compiling value-bag v1.9.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling polling v2.3.0
[INFO] [stderr]    Compiling once_cell v1.20.2
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]    Compiling async-io v1.9.0
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling async-task v4.3.0
[INFO] [stderr]    Compiling concurrent-queue v1.2.4
[INFO] [stderr]    Compiling futures-sink v0.3.25
[INFO] [stderr]    Compiling serde_derive v1.0.140
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling serde v1.0.140
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling async-lock v2.5.0
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]    Compiling async-channel v1.7.1
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling socket2 v0.4.7
[INFO] [stderr]    Compiling getrandom v0.2.7
[INFO] [stderr]    Compiling async-executor v1.4.1
[INFO] [stderr]    Compiling blocking v1.2.0
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling async-global-executor v2.3.0
[INFO] [stderr]    Compiling async-std v1.12.0
[INFO] [stderr]    Compiling futures-macro v0.3.25
[INFO] [stderr]    Compiling futures-executor v0.3.25
[INFO] [stderr]    Compiling futures v0.3.25
[INFO] [stderr]    Compiling hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `dest`
[INFO] [stdout]   --> src/chat/main.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let dest: Vec<String> = dest.split(',').map(|name| name.trim().to_string()).collect();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_dest`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/chat/main.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let msg: String = msg.to_string();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Result` is never used
[INFO] [stdout]  --> src/chat/main.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | type Result<T> = std::result::Result<T, Box<dyn std::error::Error + Send + Sync>>;
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `accept_loop` is never used
[INFO] [stdout]   --> src/chat/main.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | async fn accept_loop(addr: impl ToSocketAddrs) -> Result<()> {
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connection_loop` is never used
[INFO] [stdout]   --> src/chat/main.rs:22:10
[INFO] [stdout]    |
[INFO] [stdout] 22 | async fn connection_loop(stream: TcpStream) -> Result<()> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/chat/main.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn run() -> Result<()> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyBox` is never constructed
[INFO] [stdout]  --> src/deref.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct MyBox<T>(T);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `aa` is never used
[INFO] [stdout]  --> src/deref.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl<T> MyBox<T> {
[INFO] [stdout]   | ---------------- method in this implementation
[INFO] [stdout] 6 |     fn aa(self) {
[INFO] [stdout]   |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     typed_example();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let _ = typed_example();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.53s
[INFO] running `Command { std: "docker" "inspect" "cc83017c4cb0203e0907f4fcf89dc091eda0d8925b34ceba6c1a913c305a0a9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc83017c4cb0203e0907f4fcf89dc091eda0d8925b34ceba6c1a913c305a0a9b", kill_on_drop: false }`
[INFO] [stdout] cc83017c4cb0203e0907f4fcf89dc091eda0d8925b34ceba6c1a913c305a0a9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 497b1438b0c133bf7c7510bf1a4815301bb1a0b29946ddbc4ad772fab7955533
[INFO] running `Command { std: "docker" "start" "-a" "497b1438b0c133bf7c7510bf1a4815301bb1a0b29946ddbc4ad772fab7955533", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `dest`
[INFO] [stdout]   --> src/chat/main.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let dest: Vec<String> = dest.split(',').map(|name| name.trim().to_string()).collect();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_dest`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/chat/main.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let msg: String = msg.to_string();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Result` is never used
[INFO] [stdout]  --> src/chat/main.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | type Result<T> = std::result::Result<T, Box<dyn std::error::Error + Send + Sync>>;
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `accept_loop` is never used
[INFO] [stdout]   --> src/chat/main.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | async fn accept_loop(addr: impl ToSocketAddrs) -> Result<()> {
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connection_loop` is never used
[INFO] [stdout]   --> src/chat/main.rs:22:10
[INFO] [stdout]    |
[INFO] [stdout] 22 | async fn connection_loop(stream: TcpStream) -> Result<()> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/chat/main.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn run() -> Result<()> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     typed_example();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let _ = typed_example();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/chat/official.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     run();
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let _ = run();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "497b1438b0c133bf7c7510bf1a4815301bb1a0b29946ddbc4ad772fab7955533", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "497b1438b0c133bf7c7510bf1a4815301bb1a0b29946ddbc4ad772fab7955533", kill_on_drop: false }`
[INFO] [stdout] 497b1438b0c133bf7c7510bf1a4815301bb1a0b29946ddbc4ad772fab7955533
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f44ad27866ce684ef84fbe1036b1e0f12af07b92f4c0651c0e25eb4323f566a3
[INFO] running `Command { std: "docker" "start" "-a" "f44ad27866ce684ef84fbe1036b1e0f12af07b92f4c0651c0e25eb4323f566a3", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `dest`
[INFO] [stderr]   --> src/chat/main.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |         let dest: Vec<String> = dest.split(',').map(|name| name.trim().to_string()).collect();
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_dest`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `msg`
[INFO] [stderr]   --> src/chat/main.rs:39:13
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let msg: String = msg.to_string();
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `Result` is never used
[INFO] [stderr]  --> src/chat/main.rs:9:6
[INFO] [stderr]   |
[INFO] [stderr] 9 | type Result<T> = std::result::Result<T, Box<dyn std::error::Error + Send + Sync>>;
[INFO] [stderr]   |      ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `accept_loop` is never used
[INFO] [stderr]   --> src/chat/main.rs:11:10
[INFO] [stderr]    |
[INFO] [stderr] 11 | async fn accept_loop(addr: impl ToSocketAddrs) -> Result<()> {
[INFO] [stderr]    |          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `connection_loop` is never used
[INFO] [stderr]   --> src/chat/main.rs:22:10
[INFO] [stderr]    |
[INFO] [stderr] 22 | async fn connection_loop(stream: TcpStream) -> Result<()> {
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `run` is never used
[INFO] [stderr]   --> src/chat/main.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn run() -> Result<()> {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     typed_example();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let _ = typed_example();
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/chat/official.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     run();
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let _ = run();
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `hello_cargo` (bin "hello_cargo" test) generated 8 warnings (run `cargo fix --bin "hello_cargo" -p hello_cargo --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/hello_cargo-baaf38522ff13b9c)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test deref::main ... ok
[INFO] [stdout] test chat::official::main has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "f44ad27866ce684ef84fbe1036b1e0f12af07b92f4c0651c0e25eb4323f566a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f44ad27866ce684ef84fbe1036b1e0f12af07b92f4c0651c0e25eb4323f566a3", kill_on_drop: false }`
[INFO] [stdout] f44ad27866ce684ef84fbe1036b1e0f12af07b92f4c0651c0e25eb4323f566a3
