7e8aac553e
As suggested [on zulip][1], there's no need to use `GenericBound` here, as the only bound a lifetime can have is that it outlives other lifetimes. While we're making breaking changes here, I also renamed it from using "region" to "lifetime", as this is more user-aligned. See [this comment][2] for details. [1]: https://rust-lang.zulipchat.com/#narrow/stream/266220-t-rustdoc/topic/.60ItemEnum.3A.3AOpaqueTy.60/near/448871430 [2]: https://github.com/rust-lang/rust/issues/100961#issuecomment-2206565556