Rust Program to Divide Two Numbers from user input

Program

use std::io;
fn main() {
    println!("Division of two numbers from user input:");
    println!("Enter the first integer number:");
    let mut first = String::new();
    io::stdin()
        .read_line(&mut first)
        .expect("Failed to read from stdin");
    let firsttrimmed = first.trim();
    let aint: i32 = firsttrimmed.trim().parse().ok().expect("Error! user entered value is not an integer");
    match firsttrimmed.parse::<u32>() {
        Ok(_i) => println!("Enter the second integer number:"),                
        Err(..) => println!("Error! user entered value is not an integer: {}", firsttrimmed),
    };  
    let mut second = String::new();
    io::stdin()
        .read_line(&mut second)
        .expect("Failed to read from stdin");
    let secondtrimmed = second.trim();
    let bint: i32 = secondtrimmed.trim().parse().ok().expect("Error! user entered value is not an integer");
    match secondtrimmed.parse::<u32>() {
        Ok(_i) => test_division(aint,bint),   
        Err(..) => println!("Error! user entered value is not an integer: {}", secondtrimmed),
    };  
}
fn test_division(numerator: i32, denominator: i32) {
    match numerator.checked_div(denominator) {
        Some(result) =>  println!("Quotient of numbers {0} and {1} is: {2}", numerator, denominator, result),
        None => println!("{} / {} results in a division by zero", numerator, denominator)
    }
}

Output 1

$ rustc DivideTwoNumbersFromUserInput.rs
$ ./DivideTwoNumbersFromUserInput 
Division of two numbers from user input:
Enter the first integer number:
100
Enter the second integer number:
2
Quotient of numbers 100 and 2 is: 50

Output 2

$ rustc DivideTwoNumbersFromUserInput.rs
$ ./DivideTwoNumbersFromUserInput 
Division of two numbers from user input:
Enter the first integer number:
35
Enter the second integer number:
0
35 / 0 results in a division by zero