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