error[E0478]: lifetime bound not satisfied --> $DIR/static-lifetime.rs:3:20 | LL | impl<'a, A: Clone> Arbitrary for ::std::borrow::Cow<'a, A> {} | ^^^^^^^^^ | note: lifetime parameter instantiated with the lifetime `'a` as defined here --> $DIR/static-lifetime.rs:3:6 | LL | impl<'a, A: Clone> Arbitrary for ::std::borrow::Cow<'a, A> {} | ^^ = note: but lifetime parameter must outlive the static lifetime error: aborting due to previous error For more information about this error, try `rustc --explain E0478`.