1 error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
2 --> $DIR/fn-trait-notation.rs:4:8
4 LL | F: Fn<i32, Output = i32>,
5 | ^^^^^^^^^^^^^^^^^^^^^ help: use parenthetical notation instead: `Fn(i32) -> i32`
7 = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
8 = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
10 error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
11 --> $DIR/fn-trait-notation.rs:5:8
13 LL | G: Fn<(i32, i32, ), Output = (i32, i32)>,
14 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use parenthetical notation instead: `Fn(i32, i32) -> (i32, i32)`
16 = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
17 = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
19 error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
20 --> $DIR/fn-trait-notation.rs:6:8
22 LL | H: Fn<(i32,), Output = i32>,
23 | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use parenthetical notation instead: `Fn(i32) -> i32`
25 = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
26 = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
28 error: aborting due to 3 previous errors
30 For more information about this error, try `rustc --explain E0658`.