Rust error E0184: the trait `Copy` cannot be implemented for this type; the type has a destructor

What rustc prints

error[E0184]: the trait `Copy` cannot be implemented for this type; the type has a destructor
 --> main.rs:2:8
  |
1 | #[derive(Copy)]
  |          ---- in this derive macro expansion
2 | struct Foo; // error!
  |        ^^^ `Copy` not allowed on types with destructors
  |
note: destructor declared here
 --> main.rs:5:5
  |
5 |     fn drop(&mut self) {
  |     ^^^^^^^^^^^^^^^^^^

Real output of rustc 1.99.0 compiling the official example below (2021 edition). Your names and line numbers will differ; the first line is the part to match.

#[derive(Copy)]
struct Foo; // error!

impl Drop for Foo {
    fn drop(&mut self) {
    }
}

Related errors

• E0308mismatched types
• E0277the trait bound is not satisfied
• E0599no method named X found in the current scope
• E0433failed to resolve
• E0178expected a path on the left-hand side of `+`
• E0183manual implementations of `FnOnce` are experimental
• E0185method `foo` has a `&self` declaration in the impl, but not in the trait
• E0186method `foo` has a `&self` declaration in the trait, but not in the impl

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