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error[E0117]: only traits defined in the current crate can be implemented for primitive types
--> $DIR/E0117.rs:1:1
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LL | impl Drop for u32 {}
| ^^^^^^^^^^^^^^---
| | |
| | `u32` is not defined in the current crate
| impl doesn't use only types from inside the current crate
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= note: define and implement a trait or new type instead
error[E0120]: the `Drop` trait may only be implemented for local structs, enums, and unions
--> $DIR/E0117.rs:1:15
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LL | impl Drop for u32 {}
| ^^^ must be a struct, enum, or union in the current crate
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0117, E0120.
For more information about an error, try `rustc --explain E0117`.
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