1warning: trait method `try_into` will become ambiguous in Rust 2021
2  --> $DIR/future-prelude-collision.rs:56:18
3   |
4LL |     let _: u32 = 3u8.try_into().unwrap();
5   |                  ^^^^^^^^^^^^^^ help: disambiguate the associated function: `TryIntoU32::try_into(3u8)`
6   |
7note: the lint level is defined here
8  --> $DIR/future-prelude-collision.rs:4:9
9   |
10LL | #![warn(rust_2021_prelude_collisions)]
11   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
12   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
13   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/prelude.html>
14
15warning: trait-associated function `try_from` will become ambiguous in Rust 2021
16  --> $DIR/future-prelude-collision.rs:61:13
17   |
18LL |     let _ = u32::try_from(3u8).unwrap();
19   |             ^^^^^^^^^^^^^ help: disambiguate the associated function: `<u32 as TryFromU8>::try_from`
20   |
21   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
22   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/prelude.html>
23
24warning: trait-associated function `from_iter` will become ambiguous in Rust 2021
25  --> $DIR/future-prelude-collision.rs:66:13
26   |
27LL |     let _ = <Vec<u8>>::from_iter(vec![1u8, 2, 3, 4, 5, 6].into_iter());
28   |             ^^^^^^^^^^^^^^^^^^^^ help: disambiguate the associated function: `<Vec<u8> as FromByteIterator>::from_iter`
29   |
30   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
31   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/prelude.html>
32
33warning: trait-associated function `try_from` will become ambiguous in Rust 2021
34  --> $DIR/future-prelude-collision.rs:74:18
35   |
36LL |     let _: u32 = <_>::try_from(3u8).unwrap();
37   |                  ^^^^^^^^^^^^^ help: disambiguate the associated function: `<_ as TryFromU8>::try_from`
38   |
39   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
40   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/prelude.html>
41
42warning: trait method `try_into` will become ambiguous in Rust 2021
43  --> $DIR/future-prelude-collision.rs:79:18
44   |
45LL |     let _: u32 = (&3u8).try_into().unwrap();
46   |                  ^^^^^^^^^^^^^^^^^ help: disambiguate the associated function: `TryIntoU32::try_into(*(&3u8))`
47   |
48   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
49   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/prelude.html>
50
51warning: trait method `try_into` will become ambiguous in Rust 2021
52  --> $DIR/future-prelude-collision.rs:84:18
53   |
54LL |     let _: u32 = 3.0.try_into().unwrap();
55   |                  ^^^^^^^^^^^^^^ help: disambiguate the associated function: `TryIntoU32::try_into(&3.0)`
56   |
57   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
58   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/prelude.html>
59
60warning: trait method `try_into` will become ambiguous in Rust 2021
61  --> $DIR/future-prelude-collision.rs:90:18
62   |
63LL |     let _: u32 = mut_ptr.try_into().unwrap();
64   |                  ^^^^^^^^^^^^^^^^^^ help: disambiguate the associated function: `TryIntoU32::try_into(mut_ptr as *const _)`
65   |
66   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
67   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/prelude.html>
68
69warning: trait-associated function `try_from` will become ambiguous in Rust 2021
70  --> $DIR/future-prelude-collision.rs:95:13
71   |
72LL |     let _ = U32Alias::try_from(3u8).unwrap();
73   |             ^^^^^^^^^^^^^^^^^^ help: disambiguate the associated function: `<U32Alias as TryFromU8>::try_from`
74   |
75   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
76   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/prelude.html>
77
78warning: 8 warnings emitted
79
80