error[E0117]: only traits defined in the current crate can be implemented for arbitrary types | |
--> $DIR/coherence_local_err_tuple.rs:17:1 | |
| | |
LL | impl lib::MyCopy for (MyType,) { } | |
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ impl doesn't use types inside crate | |
| | |
= note: the impl does not reference only types defined in this crate | |
= note: define and implement a trait or new type instead | |
error: aborting due to previous error | |
For more information about this error, try `rustc --explain E0117`. |