warning: trait method `try_into` will become ambiguous in Rust 2021
  --> $DIR/future-prelude-collision-imported.rs:27:22
   |
LL |         let _: u32 = 3u8.try_into().unwrap();
   |                      ^^^^^^^^^^^^^^ help: disambiguate the associated function: `TryIntoU32::try_into(3u8)`
   |
   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/prelude.html>
note: the lint level is defined here
  --> $DIR/future-prelude-collision-imported.rs:4:9
   |
LL | #![warn(rust_2021_prelude_collisions)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: trait method `try_into` will become ambiguous in Rust 2021
  --> $DIR/future-prelude-collision-imported.rs:40:22
   |
LL |         let _: u32 = 3u8.try_into().unwrap();
   |                      ^^^^^^^^^^^^^^ help: disambiguate the associated function: `crate::m::TryIntoU32::try_into(3u8)`
   |
   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/prelude.html>

warning: trait method `try_into` will become ambiguous in Rust 2021
  --> $DIR/future-prelude-collision-imported.rs:53:22
   |
LL |         let _: u32 = 3u8.try_into().unwrap();
   |                      ^^^^^^^^^^^^^^ help: disambiguate the associated function: `super::m::TryIntoU32::try_into(3u8)`
   |
   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/prelude.html>

warning: trait method `try_into` will become ambiguous in Rust 2021
  --> $DIR/future-prelude-collision-imported.rs:64:22
   |
LL |         let _: u32 = 3u8.try_into().unwrap();
   |                      ^^^^^^^^^^^^^^ help: disambiguate the associated function: `TryIntoU32::try_into(3u8)`
   |
   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/prelude.html>

warning: 4 warnings emitted