type annotations needed for `RedisStorage<_>`

[askareija]

i tried to follow example for axum and implement it on my code. I'm separating main and infrastructure, here's my code for infrastructure.rs:

use crate::config::{
    app::{AppConfig, initialize_app_config},
    observability::initialize_observability,
};
use crate::utils::redis_client::RedisClient;
use crate::utils::s3_client::S3Client;

use anyhow::Context;
use apalis::prelude::*;
use apalis_redis::RedisStorage;
use migration::MigratorTrait;
use sea_orm::Database;

pub async fn initialize_infrastructure() -> anyhow::Result<(
    sea_orm::DatabaseConnection,
    RedisClient,
    AppConfig,
    S3Client,
)> {
    // SECTION: Memuat konfigurasi dari variabel environment
    let config = initialize_app_config().context("Failed to load application configuration")?;
    // !SECTION

    // SECTION: Menginisialisasi observability
    initialize_observability(&config.app_version).context("Failed to initialize OpenTelemetry")?;
    // !SECTION

    // SECTION: Setup koneksi database
    let db = Database::connect(&config.database_url)
        .await
        .context("Failed to connect to database")?;
    tracing::info!("Successfully connected to the database");
    // !SECTION

    // SECTION: Menjalankan migrasi database
    migration::Migrator::up(&db, None)
        .await
        .context("Failed to run database migrations")?;
    // !SECTION

    // SECTION: Setup koneksi Redis
    let redis_client = RedisClient::new(&config.redis_url)
        .await
        .map_err(|e| anyhow::anyhow!("Failed to create Redis client: {:?}", e))?;
    // !SECTION

    // SECTION: Setup koneksi S3
    let s3_config = aws_config::load_from_env().await;
    let conf = aws_sdk_s3::config::Builder::from(&s3_config)
        .force_path_style(true)
        .build();
    let raw_s3_client = aws_sdk_s3::Client::from_conf(conf);
    let s3_client = S3Client::new(raw_s3_client).context("Failed to create S3 client wrapper")?;
    // !SECTION

    // SECTION: Setup Storage untuk apalis
    let redis_url = std::env::var("REDIS_URL").expect("Missing env variable REDIS_URL");
    let apalis_connection = apalis_redis::connect(redis_url)
        .await
        .expect("Cannot connect to redis");
    let apalis_storage = RedisStorage::new(apalis_connection);

    Ok((db, redis_client, config, s3_client))
}

and in main.rs:

mod config;
mod infrastructure;
mod jobs;
mod middlewares;
mod modules;
mod utils;

use std::{net::SocketAddr, process, sync::Arc, time::Duration};
use tokio::sync::Mutex;

use axum::http::{Request, Response};
use tower::ServiceBuilder;
use tower_http::trace::TraceLayer;
use tracing::Span;

use crate::{
    config::observability::{make_trace_span, trace_layer_on_response},
    infrastructure::initialize_infrastructure,
    utils::{app_state::AppState, router},
};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    // NOTE: Memuat file .env untuk konfigurasi environment
    match dotenvy::dotenv() {
        Ok(path) => tracing::info!("Loaded .env file from: {}", path.display()),
        Err(e) => {
            tracing::error!(
                "Could not load .env file: {}. Please ensure it exists in the root of the project.",
                e
            );
            tracing::warn!("Execution continues without loading .env file.");
        }
    };

    // NOTE: Menginisialisasi infrastruktur aplikasi
    let (db, redis_client, config, s3_client) = match initialize_infrastructure().await {
        Ok((db, redis_client, config, s3_client)) => (db, redis_client, config, s3_client),
        Err(error) => {
            tracing::error!("Error: Failed to initialize infrastructure: {:#}", error);
            process::exit(1);
        }
    };
    // !SECTION

    // NOTE: Membuat state aplikasi dengan semua dependensi
    let app_state = AppState {
        db,
        redis_client: Arc::new(Mutex::new(redis_client)),
        s3_client,
    };
    // !SECTION

    // NOTE: Membangun aplikasi dengan middleware dan routing
    let app = router::create_routes(app_state).layer(
        ServiceBuilder::new().layer(
            TraceLayer::new_for_http()
                .make_span_with(|request: &Request<_>| make_trace_span(request))
                .on_response(|response: &Response<_>, latency: Duration, span: &Span| {
                    trace_layer_on_response(response, latency, span)
                }),
        ),
    );

    // NOTE: Menjalankan server HTTP
    let addr = SocketAddr::new(config.app_host, config.app_port);
    tracing::info!("🚀 Server listening on {}", addr);

    let listener = tokio::net::TcpListener::bind(addr).await?;
    axum::serve(listener, app).await?;

    Ok(())
}

i've got error for RedisStorage::new, it's say:

type annotations needed for `RedisStorage<_>`
cannot satisfy `_: custom_error::_::_serde::Serialize`
the following types implement trait `custom_error::_::_serde::Serialize`:
  &'a T
  &'a mut T
  ()
  (T,)
  (T0, T1)
  (T0, T1, T2)
  (T0, T1, T2, T3)
  (T0, T1, T2, T3, T4)

how can i fix it?

my Cargo.toml:

# Background jobs
apalis = { version = "0.7", features = ["limit"] }
apalis-redis = "0.7"

[geofmureithi]

The compiler needs to know the T in RedisStorage<T>.

let apalis_storage = RedisStorage::new(apalis_connection);
Ok((db, redis_client, config, s3_client))

You create a storage and dont use it. Either remove it or use it.