Attempting to take ownership of a value that is behind a shared or mutable reference.
E0507 occurs when you try to move an owned value out of a reference (`&T` or `&mut T`), which would leave the reference pointing to invalid memory.
Dereferencing a reference or calling an ownership-consuming method like `Option::unwrap()` on a reference `&Option<T>`.
1struct User {2 name: String,3}4 5fn process_user(user_ref: &User) {6 let name = user_ref.name; // ERROR E0507: cannot move out of user_ref.name which is behind a shared reference7}1struct User {2 name: String,3}4 5fn process_user(user_ref: &User) {6 // Fix 1: Borrow a slice &str7 let name_ref: &str = &user_ref.name;8 9 // Fix 2: Clone if independent ownership is required10 let name_owned: String = user_ref.name.clone();11}Simulate standard system builds to trigger compiler trace records and track memory crashes locally.
Field `name` is a heap-allocated `String`. Moving it out of `user_ref` would invalidate `user_ref` for the original owner.