1 error[E0119]: conflicting implementations of trait `complex_impl_support::External` for type `(Q, complex_impl_support::M<'_, '_, '_, std::boxed::Box<_>, _, _>)`:
2 --> $DIR/complex-impl.rs:19:1
4 LL | impl<R> External for (Q, R) {} //~ ERROR must be used
5 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
7 = note: conflicting implementation in crate `complex_impl_support`:
8 - impl<'a, 'b, 'c, T, U, V, W> complex_impl_support::External for (T, complex_impl_support::M<'a, 'b, 'c, std::boxed::Box<U>, V, W>)
9 where <U as std::ops::FnOnce<(T,)>>::Output == V, <V as std::iter::Iterator>::Item == T, 'b : 'a, T : 'a, U: std::ops::FnOnce<(T,)>, U : 'static, V: std::iter::Iterator, V: std::clone::Clone, W: std::ops::Add, <W as std::ops::Add>::Output: std::marker::Copy;
11 error[E0210]: type parameter `R` must be used as the type parameter for some local type (e.g. `MyStruct<R>`)
12 --> $DIR/complex-impl.rs:19:1
14 LL | impl<R> External for (Q, R) {} //~ ERROR must be used
15 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ type parameter `R` must be used as the type parameter for some local type
17 = note: only traits defined in the current crate can be implemented for a type parameter
19 error: aborting due to 2 previous errors
21 Some errors occurred: E0119, E0210.
22 For more information about an error, try `rustc --explain E0119`.