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` | ::: $SRC_DIR/core/src/convert/mod.rs:LL:COL | LL | fn try_into(self) -> Result; | -------- | | | the method is available for `Box` here | the method is available for `Pin` here | the method is available for `Arc` here | the method is available for `Rc` here | = help: items from traits can only be used if the trait is in scope = note: the following traits are implemented but not in scope; perhaps add a `use` for one of them: candidate #1: `use crate::m::TryIntoU32;` candidate #2: `use std::convert::TryInto;` help: consider wrapping the receiver expression with the appropriate type | LL | let _: u32 = Box::new(3u8).try_into().unwrap(); | ^^^^^^^^^ ^ help: consider wrapping the receiver expression with the appropriate type | LL | let _: u32 = Pin::new(3u8).try_into().unwrap(); | ^^^^^^^^^ ^ help: consider wrapping the receiver expression with the appropriate type | LL | let _: u32 = Arc::new(3u8).try_into().unwrap(); | ^^^^^^^^^ ^ help: consider wrapping the receiver expression with the appropriate type | LL | let _: u32 = Rc::new(3u8).try_into().unwrap(); | ^^^^^^^^ ^ error: aborting due to previous error For more information about this error, try `rustc --explain E0599`.