1 warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
2 --> $DIR/equality.rs:1:12
4 LL | #![feature(specialization)]
7 = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
8 = help: consider using `min_specialization` instead, which is more stable and complete
9 = note: `#[warn(incomplete_features)]` on by default
11 error[E0308]: mismatched types
12 --> $DIR/equality.rs:15:5
14 LL | fn two(x: bool) -> impl Foo {
15 | -------- expected `i32` because of return type
18 | ^^^^^ expected `i32`, found `u32`
20 help: change the type of the numeric literal from `u32` to `i32`
25 error[E0277]: cannot add `impl Foo` to `u32`
26 --> $DIR/equality.rs:24:11
28 LL | n + sum_to(n - 1)
29 | ^ no implementation for `u32 + impl Foo`
31 = help: the trait `Add<impl Foo>` is not implemented for `u32`
32 = help: the following other types implement trait `Add<Rhs>`:
38 error: aborting due to 2 previous errors; 1 warning emitted
40 Some errors have detailed explanations: E0277, E0308.
41 For more information about an error, try `rustc --explain E0277`.