Error code E0381
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 }
To fix this, ensure that any declared variables are initialized before being used. Example:
fn main() { let x: i32 = 0; let y = x; // ok! }