1// run-rustfix
2// edition:2018
3// check-pass
4#![warn(rust_2021_prelude_collisions)]
5#![allow(dead_code)]
6#![allow(unused_imports)]
7
8mod m {
9    pub trait TryIntoU32 {
10        fn try_into(self) -> Result<u32, ()>;
11    }
12
13    impl TryIntoU32 for u8 {
14        fn try_into(self) -> Result<u32, ()> {
15            Ok(self as u32)
16        }
17    }
18
19    pub trait AnotherTrick {}
20}
21
22mod a {
23    use crate::m::TryIntoU32;
24
25    fn main() {
26        // In this case, we can just use `TryIntoU32`
27        let _: u32 = TryIntoU32::try_into(3u8).unwrap();
28        //~^ WARNING trait method `try_into` will become ambiguous in Rust 2021
29        //~^^ WARNING this is accepted in the current edition
30    }
31}
32
33mod b {
34    use crate::m::AnotherTrick as TryIntoU32;
35    use crate::m::TryIntoU32 as _;
36
37    fn main() {
38        // In this case, a `TryIntoU32::try_into` rewrite will not work, and we need to use
39        // the path `crate::m::TryIntoU32` (with which it was imported).
40        let _: u32 = crate::m::TryIntoU32::try_into(3u8).unwrap();
41        //~^ WARNING trait method `try_into` will become ambiguous in Rust 2021
42        //~^^ WARNING this is accepted in the current edition
43    }
44}
45
46mod c {
47    use super::m::TryIntoU32 as _;
48    use crate::m::AnotherTrick as TryIntoU32;
49
50    fn main() {
51        // In this case, a `TryIntoU32::try_into` rewrite will not work, and we need to use
52        // the path `super::m::TryIntoU32` (with which it was imported).
53        let _: u32 = super::m::TryIntoU32::try_into(3u8).unwrap();
54        //~^ WARNING trait method `try_into` will become ambiguous in Rust 2021
55        //~^^ WARNING this is accepted in the current edition
56    }
57}
58
59mod d {
60    use super::m::*;
61
62    fn main() {
63        // See https://github.com/rust-lang/rust/issues/88471
64        let _: u32 = TryIntoU32::try_into(3u8).unwrap();
65        //~^ WARNING trait method `try_into` will become ambiguous in Rust 2021
66        //~^^ WARNING this is accepted in the current edition
67    }
68}
69
70fn main() {}
71