error[E0599]: no method named `try_into` found for type `u8` in the current scope --> $DIR/future-prelude-collision-shadow.rs:27:26 | LL | let _: u32 = 3u8.try_into().unwrap(); | ^^^^^^^^ method not found in `u8` | = help: items from traits can only be used if the trait is in scope = note: 'std::convert::TryInto' is included in the prelude starting in Edition 2021 help: the following traits are implemented but not in scope; perhaps add a `use` for one of them: | LL + use crate::m::TryIntoU32; | LL + use std::convert::TryInto; | error: aborting due to previous error For more information about this error, try `rustc --explain E0599`.