It is not allowed to use or capture an uninitialized variable.
Erroneous code example:
fn main() {
let x: i32;
let y = x; // error, use of possibly-uninitialized variable
}
RunTo fix this, ensure that any declared variables are initialized before being used. Example:
fn main() {
let x: i32 = 0;
let y = x; // ok!
}
Run