Rust Error E0382 Explained: use of moved value

What does E0382 mean?

Rust error E0382 usually means that a value is used after ownership has been moved. This page explains the problem with a minimal example and shows one practical way to fix it.

Broken example

let s = String::from("hello");
let t = s;
println!("{}", s);

Why this happens

Rust checks ownership, borrowing, lifetimes, and types at compile time. When the compiler reports E0382, it is preventing code that could become unsafe, ambiguous, or invalid at runtime.

In practical terms, the compiler is telling you to make the data flow more explicit. Once the ownership or type relationship is clear, the error usually becomes easy to fix.

How to fix E0382

The common fix is to borrow the value, clone it, or change the ownership flow.

let s = String::from("hello");
let t = s.clone();
println!("{}", s);

Checklist

• Read the first compiler note after the main error.
• Find where the value is created.
• Find where it is moved, borrowed, or converted.
• Decide whether the code should borrow, clone, move, or return an owned value.

FAQ

Is E0382 a runtime error?

No. It is a compile-time error. Rust rejects the program before it can run.

Should I always use clone to fix it?

No. Clone is sometimes fine, but borrowing or changing the ownership structure is often better.

Why is Rust so strict?

Rust is strict because it guarantees memory safety without a garbage collector. The compiler asks you to make ownership and lifetime rules explicit.

Related Rust errors

• E0382
• E0507
• E0597
• E0499