[INFO] cloning repository https://github.com/r4z4/axum_mqtt_receiver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/r4z4/axum_mqtt_receiver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fr4z4%2Faxum_mqtt_receiver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fr4z4%2Faxum_mqtt_receiver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c55db6046ba0e6918129908e5889f3358f1f9aa
[INFO] checking r4z4/axum_mqtt_receiver/2c55db6046ba0e6918129908e5889f3358f1f9aa against master#b4fefcd60bfd770510f7dc540e887dd3ba4fe5c1 for pr-156992
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fr4z4%2Faxum_mqtt_receiver" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/r4z4/axum_mqtt_receiver
[INFO] finished tweaking git repo https://github.com/r4z4/axum_mqtt_receiver
[INFO] tweaked toml for git repo https://github.com/r4z4/axum_mqtt_receiver written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/r4z4/axum_mqtt_receiver on toolchain b4fefcd60bfd770510f7dc540e887dd3ba4fe5c1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b4fefcd60bfd770510f7dc540e887dd3ba4fe5c1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/r4z4/axum_mqtt_receiver 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" "+b4fefcd60bfd770510f7dc540e887dd3ba4fe5c1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded http-range-header v0.4.2
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[INFO] [stderr]   Downloaded rumqttc v0.24.0
[INFO] [stderr]   Downloaded winnow v0.7.10
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[INFO] running `Command { std: "docker" "start" "-a" "b3f38cef584da0eb951291009293ee557827b987ed4775002ff634356cf176f6", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b4fefcd60bfd770510f7dc540e887dd3ba4fe5c1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused imports: `Path`, `Query`, and `WebSocket`
[INFO] [stdout]  --> src/main.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 |         ws::{Utf8Bytes, WebSocket}, Json, Path, Query, WebSocketUpgrade
[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 imports: `SplitSink` and `SplitStream`
[INFO] [stdout]   --> src/main.rs:14:14
[INFO] [stdout]    |
[INFO] [stdout] 14 |     stream::{SplitSink, SplitStream, StreamExt},
[INFO] [stdout]    |              ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]   --> src/main.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 | use serde::{Deserialize, Serialize};
[INFO] [stdout]    |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::error::Error;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write as _`
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::io::Write as _;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iter`
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     iter,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `task` and `time`
[INFO] [stdout]   --> src/main.rs:31:30
[INFO] [stdout]    |
[INFO] [stdout] 31 | use tokio::{sync::broadcast, task, time};
[INFO] [stdout]    |                              ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ServeFile`
[INFO] [stdout]   --> src/main.rs:32:38
[INFO] [stdout]    |
[INFO] [stdout] 32 | use tower_http::services::{ServeDir, ServeFile};
[INFO] [stdout]    |                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Level` and `span`
[INFO] [stdout]   --> src/main.rs:33:15
[INFO] [stdout]    |
[INFO] [stdout] 33 | use tracing::{Level, info, span};
[INFO] [stdout]    |               ^^^^^        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tracing_subscriber::fmt::init`
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | use tracing_subscriber::fmt::init;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio_tungstenite::tungstenite::Message`
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use tokio_tungstenite::tungstenite::Message;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]    --> src/main.rs:307:9
[INFO] [stdout]     |
[INFO] [stdout] 307 |         while true {
[INFO] [stdout]     |         ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stdout]   --> src/main.rs:16:33
[INFO] [stdout]    |
[INFO] [stdout] 16 | use rand::{distr::Alphanumeric, thread_rng, Rng};
[INFO] [stdout]    |                                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stdout]    --> src/main.rs:279:13
[INFO] [stdout]     |
[INFO] [stdout] 279 |     let s = thread_rng()
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Path`, `Query`, and `WebSocket`
[INFO] [stdout]  --> src/main.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 |         ws::{Utf8Bytes, WebSocket}, Json, Path, Query, WebSocketUpgrade
[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 imports: `SplitSink` and `SplitStream`
[INFO] [stdout]   --> src/main.rs:14:14
[INFO] [stdout]    |
[INFO] [stdout] 14 |     stream::{SplitSink, SplitStream, StreamExt},
[INFO] [stdout]    |              ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]   --> src/main.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 | use serde::{Deserialize, Serialize};
[INFO] [stdout]    |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::error::Error;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write as _`
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::io::Write as _;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iter`
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     iter,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `task` and `time`
[INFO] [stdout]   --> src/main.rs:31:30
[INFO] [stdout]    |
[INFO] [stdout] 31 | use tokio::{sync::broadcast, task, time};
[INFO] [stdout]    |                              ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ServeFile`
[INFO] [stdout]   --> src/main.rs:32:38
[INFO] [stdout]    |
[INFO] [stdout] 32 | use tower_http::services::{ServeDir, ServeFile};
[INFO] [stdout]    |                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Level` and `span`
[INFO] [stdout]   --> src/main.rs:33:15
[INFO] [stdout]    |
[INFO] [stdout] 33 | use tracing::{Level, info, span};
[INFO] [stdout]    |               ^^^^^        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tracing_subscriber::fmt::init`
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | use tracing_subscriber::fmt::init;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio_tungstenite::tungstenite::Message`
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use tokio_tungstenite::tungstenite::Message;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]    --> src/main.rs:307:9
[INFO] [stdout]     |
[INFO] [stdout] 307 |         while true {
[INFO] [stdout]     |         ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stdout]   --> src/main.rs:16:33
[INFO] [stdout]    |
[INFO] [stdout] 16 | use rand::{distr::Alphanumeric, thread_rng, Rng};
[INFO] [stdout]    |                                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: Renamed to `rng`
[INFO] [stdout]    --> src/main.rs:279:13
[INFO] [stdout]     |
[INFO] [stdout] 279 |     let s = thread_rng()
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/main.rs:178:25
[INFO] [stdout]     |
[INFO] [stdout] 162 | /                  match packet {
[INFO] [stdout] 163 | |                      Packet::Publish(msg) => {
[INFO] [stdout] 164 | |                          let topic = msg.topic;
[INFO] [stdout] 165 | |                          let payload = msg.payload;
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |/                         MessageTemplate {
[INFO] [stdout] 179 | ||                             message: publish
[INFO] [stdout] 180 | ||                         }
[INFO] [stdout]     | ||_________________________^ expected `()`, found `MessageTemplate`
[INFO] [stdout] 181 | |                      }
[INFO] [stdout] 182 | |                      _ => (),
[INFO] [stdout] 183 | |                  }
[INFO] [stdout]     | |__________________- expected this to be `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/main.rs:178:25
[INFO] [stdout]     |
[INFO] [stdout] 162 | /                  match packet {
[INFO] [stdout] 163 | |                      Packet::Publish(msg) => {
[INFO] [stdout] 164 | |                          let topic = msg.topic;
[INFO] [stdout] 165 | |                          let payload = msg.payload;
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |/                         MessageTemplate {
[INFO] [stdout] 179 | ||                             message: publish
[INFO] [stdout] 180 | ||                         }
[INFO] [stdout]     | ||_________________________^ expected `()`, found `MessageTemplate`
[INFO] [stdout] 181 | |                      }
[INFO] [stdout] 182 | |                      _ => (),
[INFO] [stdout] 183 | |                  }
[INFO] [stdout]     | |__________________- expected this to be `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:196:10
[INFO] [stdout]     |
[INFO] [stdout] 196 |     let (mut client, mut eventloop) = AsyncClient::new(mqttoptions, 10);
[INFO] [stdout]     |          ----^^^^^^
[INFO] [stdout]     |          |
[INFO] [stdout]     |          help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:297:9
[INFO] [stdout]     |
[INFO] [stdout] 297 |     let mut rx = tx.subscribe();
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:196:10
[INFO] [stdout]     |
[INFO] [stdout] 196 |     let (mut client, mut eventloop) = AsyncClient::new(mqttoptions, 10);
[INFO] [stdout]     |          ----^^^^^^
[INFO] [stdout]     |          |
[INFO] [stdout]     |          help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:297:9
[INFO] [stdout]     |
[INFO] [stdout] 297 |     let mut rx = tx.subscribe();
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StreamExt`
[INFO] [stdout]   --> src/main.rs:14:38
[INFO] [stdout]    |
[INFO] [stdout] 14 |     stream::{SplitSink, SplitStream, StreamExt},
[INFO] [stdout]    |                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sink::SinkExt`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     sink::SinkExt,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:145:10
[INFO] [stdout]     |
[INFO] [stdout] 145 |     let (mut client, mut eventloop) = AsyncClient::new(mqttoptions, 10);
[INFO] [stdout]     |          ----^^^^^^
[INFO] [stdout]     |          |
[INFO] [stdout]     |          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:145:22
[INFO] [stdout]     |
[INFO] [stdout] 145 |     let (mut client, mut eventloop) = AsyncClient::new(mqttoptions, 10);
[INFO] [stdout]     |                      ----^^^^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StreamExt`
[INFO] [stdout]   --> src/main.rs:14:38
[INFO] [stdout]    |
[INFO] [stdout] 14 |     stream::{SplitSink, SplitStream, StreamExt},
[INFO] [stdout]    |                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sink::SinkExt`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     sink::SinkExt,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/main.rs:273:13
[INFO] [stdout]     |
[INFO] [stdout] 273 | fn generate(len: usize) -> String {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx`
[INFO] [stdout]    --> src/main.rs:297:9
[INFO] [stdout]     |
[INFO] [stdout] 297 |     let mut rx = tx.subscribe();
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:145:10
[INFO] [stdout]     |
[INFO] [stdout] 145 |     let (mut client, mut eventloop) = AsyncClient::new(mqttoptions, 10);
[INFO] [stdout]     |          ----^^^^^^
[INFO] [stdout]     |          |
[INFO] [stdout]     |          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:145:22
[INFO] [stdout]     |
[INFO] [stdout] 145 |     let (mut client, mut eventloop) = AsyncClient::new(mqttoptions, 10);
[INFO] [stdout]     |                      ----^^^^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/main.rs:273:13
[INFO] [stdout]     |
[INFO] [stdout] 273 | fn generate(len: usize) -> String {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx`
[INFO] [stdout]    --> src/main.rs:297:9
[INFO] [stdout]     |
[INFO] [stdout] 297 |     let mut rx = tx.subscribe();
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `axum_mqtt_receiver` (bin "axum_mqtt_receiver" test) due to 1 previous error; 23 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `axum_mqtt_receiver` (bin "axum_mqtt_receiver") due to 1 previous error; 23 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "6506abcc811391b6b38b8ab90bead7769767cdfa22886b6dc8058b8bd5bd3b42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6506abcc811391b6b38b8ab90bead7769767cdfa22886b6dc8058b8bd5bd3b42", kill_on_drop: false }`
[INFO] [stdout] 6506abcc811391b6b38b8ab90bead7769767cdfa22886b6dc8058b8bd5bd3b42
