error: implementation of `Foo` is not general enough --> $DIR/auto-trait-regions.rs:30:5 | LL | assert_foo(gen); | ^^^^^^^^^^ | = note: `Foo` would have to be implemented for the type `&'0 OnlyFooIfStaticRef`, for any lifetime `'0` = note: but `Foo` is actually implemented for the type `&'1 OnlyFooIfStaticRef`, for some specific lifetime `'1` error: implementation of `Foo` is not general enough --> $DIR/auto-trait-regions.rs:48:5 | LL | assert_foo(gen); | ^^^^^^^^^^ | = note: `Foo` would have to be implemented for the type `A<'0, '1>`, for any two lifetimes `'0` and `'1` = note: but `Foo` is actually implemented for the type `A<'_, '2>`, for some specific lifetime `'2` error: aborting due to 2 previous errors