error: this function can be simplified using the `async fn` syntax
  --> tests/ui/manual_async_fn.rs:6:1
   |
LL | fn fut() -> impl Future<Output = i32> {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `-D clippy::manual-async-fn` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::manual_async_fn)]`
help: make the function `async` and return the output of the future directly
   |
LL - fn fut() -> impl Future<Output = i32> {
LL + async fn fut() -> i32 { 42 }
   |

error: this function can be simplified using the `async fn` syntax
  --> tests/ui/manual_async_fn.rs:11:1
   |
LL | fn fut2() ->impl Future<Output = i32> {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: make the function `async` and return the output of the future directly
   |
LL - fn fut2() ->impl Future<Output = i32> {
LL + async fn fut2() -> i32 { 42 }
   |

error: this function can be simplified using the `async fn` syntax
  --> tests/ui/manual_async_fn.rs:16:1
   |
LL | fn fut3()-> impl Future<Output = i32> {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: make the function `async` and return the output of the future directly
   |
LL - fn fut3()-> impl Future<Output = i32> {
LL + async fn fut3() -> i32 { 42 }
   |

error: this function can be simplified using the `async fn` syntax
  --> tests/ui/manual_async_fn.rs:20:1
   |
LL | fn empty_fut() -> impl Future<Output = ()> {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: make the function `async` and return the output of the future directly
   |
LL - fn empty_fut() -> impl Future<Output = ()> {
LL + async fn empty_fut() {}
   |

error: this function can be simplified using the `async fn` syntax
  --> tests/ui/manual_async_fn.rs:25:1
   |
LL | fn empty_fut2() ->impl Future<Output = ()> {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: make the function `async` and return the output of the future directly
   |
LL - fn empty_fut2() ->impl Future<Output = ()> {
LL + async fn empty_fut2() {}
   |

error: this function can be simplified using the `async fn` syntax
  --> tests/ui/manual_async_fn.rs:30:1
   |
LL | fn empty_fut3()-> impl Future<Output = ()> {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: make the function `async` and return the output of the future directly
   |
LL - fn empty_fut3()-> impl Future<Output = ()> {
LL + async fn empty_fut3() {}
   |

error: this function can be simplified using the `async fn` syntax
  --> tests/ui/manual_async_fn.rs:34:1
   |
LL | fn core_fut() -> impl core::future::Future<Output = i32> {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: make the function `async` and return the output of the future directly
   |
LL - fn core_fut() -> impl core::future::Future<Output = i32> {
LL + async fn core_fut() -> i32 { 42 }
   |

error: this function can be simplified using the `async fn` syntax
  --> tests/ui/manual_async_fn.rs:56:5
   |
LL |     fn inh_fut() -> impl Future<Output = i32> {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: make the function `async` and return the output of the future directly
   |
LL ~     async fn inh_fut() -> i32 {
LL +         // NOTE: this code is here just to check that the indentation is correct in the suggested fix
LL +         let a = 42;
LL +         let b = 21;
LL +         if a < b {
LL +             let c = 21;
LL +             let d = 42;
LL +             if c < d {
LL +                 let _ = 42;
LL +             }
LL +         }
LL +         42
LL +     }
   |

error: this function can be simplified using the `async fn` syntax
  --> tests/ui/manual_async_fn.rs:91:1
   |
LL | fn elided(_: &i32) -> impl Future<Output = i32> + '_ {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: make the function `async` and return the output of the future directly
   |
LL - fn elided(_: &i32) -> impl Future<Output = i32> + '_ {
LL + async fn elided(_: &i32) -> i32 { 42 }
   |

error: this function can be simplified using the `async fn` syntax
  --> tests/ui/manual_async_fn.rs:101:1
   |
LL | fn explicit<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future<Output = i32> + 'a + 'b {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: make the function `async` and return the output of the future directly
   |
LL - fn explicit<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future<Output = i32> + 'a + 'b {
LL + async fn explicit<'a, 'b>(_: &'a i32, _: &'b i32) -> i32 { 42 }
   |

error: this function can be simplified using the `async fn` syntax
  --> tests/ui/manual_async_fn.rs:130:1
   |
LL | pub fn issue_10450() -> impl Future<Output = i32> {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: make the function `async` and return the output of the future directly
   |
LL - pub fn issue_10450() -> impl Future<Output = i32> {
LL + pub async fn issue_10450() -> i32 { 42 }
   |

error: this function can be simplified using the `async fn` syntax
  --> tests/ui/manual_async_fn.rs:134:1
   |
LL | pub(crate) fn issue_10450_2() -> impl Future<Output = i32> {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: make the function `async` and return the output of the future directly
   |
LL - pub(crate) fn issue_10450_2() -> impl Future<Output = i32> {
LL + pub(crate) async fn issue_10450_2() -> i32 { 42 }
   |

error: this function can be simplified using the `async fn` syntax
  --> tests/ui/manual_async_fn.rs:138:1
   |
LL | pub(self) fn issue_10450_3() -> impl Future<Output = i32> {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: make the function `async` and return the output of the future directly
   |
LL - pub(self) fn issue_10450_3() -> impl Future<Output = i32> {
LL + pub(self) async fn issue_10450_3() -> i32 { 42 }
   |

error: aborting due to 13 previous errors