Unknown type in basic `esp32c3-hal`

rust-analyzer version: rust-analyzer version: 0.0.0 (7ac161ce7 2023-05-21)

rustc version: rustc 1.69.0 (84c898d65 2023-04-16)

let system = peripherals.SYSTEM.split(); has {unknown} type

1. main.rs

#![no_std]
#![no_main]

use core::panic;

use esp32c3_hal::prelude::_esp_hal_system_SystemExt;
use esp32c3_hal::{entry, peripherals::Peripherals};

#[entry]
fn main() -> ! {
    let peripherals = Peripherals::take();
    let system = peripherals.SYSTEM.split();
    //  ^^^^^ system has unknown type
    drop(system);
    loop {}
}

#[panic_handler]
fn panic_handler(_: &panic::PanicInfo) -> ! {
    loop {}
}

2. Cargo.toml

[package]
name = "blink"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
esp32c3-hal = "0.9.0"

[profile.release]
debug = false

Reproduce the report using the provided main.rs and Cargo.toml with rust-analyzer 0.0.0 and esp32c3-hal 0.9.0. Inspect why the type of peripherals.SYSTEM.split() is shown as {unknown}; done when rust-analyzer resolves and displays the concrete type for system.