1 error[E0375]: implementing the trait `CoerceUnsized` requires multiple coercions
2 --> $DIR/E0375.rs:22:12
4 22 | impl<T, U> CoerceUnsized<Foo<U, T>> for Foo<T, U> {}
5 | ^^^^^^^^^^^^^^^^^^^^^^^^ requires multiple coercions
7 = note: `CoerceUnsized` may only be implemented for a coercion between structures with one field being coerced
8 = note: currently, 2 fields need coercions: b (T to U), c (U to T)
10 error: aborting due to previous error