#![allow(warnings)] trait Id {} trait Lt<'a> {} impl<'a> Lt<'a> for () {} impl Id for T {} fn free_fn_capture_hrtb_in_impl_trait() -> Box Id>> //~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from `dyn` type { Box::new(()) } struct Foo; impl Foo { fn impl_fn_capture_hrtb_in_impl_trait() -> Box Id>> //~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from `dyn` type { Box::new(()) } } fn main() {}