diff --git a/compiler/rustc_feature/src/active.rs b/compiler/rustc_feature/src/active.rs
index f046022b842..bafb83740ca 100644
--- a/compiler/rustc_feature/src/active.rs
+++ b/compiler/rustc_feature/src/active.rs
@@ -310,7 +310,7 @@ declare_features! (
     /// Allows `async || body` closures.
     (active, async_closure, "1.37.0", Some(62290), None),
     /// Allows async functions to be declared, implemented, and used in traits.
-    (incomplete, async_fn_in_trait, "1.66.0", Some(91611), None),
+    (active, async_fn_in_trait, "1.66.0", Some(91611), None),
     /// Treat `extern "C"` function as nounwind.
     (active, c_unwind, "1.52.0", Some(74990), None),
     /// Allows using C-variadics.
@@ -496,7 +496,7 @@ declare_features! (
     /// Allows `repr(simd)` and importing the various simd intrinsics.
     (active, repr_simd, "1.4.0", Some(27731), None),
     /// Allows return-position `impl Trait` in traits.
-    (incomplete, return_position_impl_trait_in_trait, "1.65.0", Some(91611), None),
+    (active, return_position_impl_trait_in_trait, "1.65.0", Some(91611), None),
     /// Allows bounding the return type of AFIT/RPITIT.
     (incomplete, return_type_notation, "1.70.0", Some(109417), None),
     /// Allows `extern "rust-cold"`.
diff --git a/tests/ui/associated-type-bounds/return-type-notation/bad-inputs-and-output.rs b/tests/ui/associated-type-bounds/return-type-notation/bad-inputs-and-output.rs
index 79cee55177b..58ce41d1a89 100644
--- a/tests/ui/associated-type-bounds/return-type-notation/bad-inputs-and-output.rs
+++ b/tests/ui/associated-type-bounds/return-type-notation/bad-inputs-and-output.rs
@@ -2,7 +2,6 @@
 
 #![feature(return_type_notation, async_fn_in_trait)]
 //~^ WARN the feature `return_type_notation` is incomplete
-//~| WARN the feature `async_fn_in_trait` is incomplete
 
 trait Trait {
     async fn method() {}
diff --git a/tests/ui/associated-type-bounds/return-type-notation/bad-inputs-and-output.stderr b/tests/ui/associated-type-bounds/return-type-notation/bad-inputs-and-output.stderr
index b23e0f791ea..95ef7d82fca 100644
--- a/tests/ui/associated-type-bounds/return-type-notation/bad-inputs-and-output.stderr
+++ b/tests/ui/associated-type-bounds/return-type-notation/bad-inputs-and-output.stderr
@@ -1,11 +1,11 @@
 error: return type notation uses `()` instead of `(..)` for elided arguments
-  --> $DIR/bad-inputs-and-output.rs:19:24
+  --> $DIR/bad-inputs-and-output.rs:18:24
    |
 LL | fn baz<T: Trait<method(..): Send>>() {}
    |                        ^^ help: remove the `..`
 
 error[E0658]: associated type bounds are unstable
-  --> $DIR/bad-inputs-and-output.rs:11:17
+  --> $DIR/bad-inputs-and-output.rs:10:17
    |
 LL | fn foo<T: Trait<method(i32): Send>>() {}
    |                 ^^^^^^^^^^^^^^^^^
@@ -14,7 +14,7 @@ LL | fn foo<T: Trait<method(i32): Send>>() {}
    = help: add `#![feature(associated_type_bounds)]` to the crate attributes to enable
 
 error[E0658]: associated type bounds are unstable
-  --> $DIR/bad-inputs-and-output.rs:15:17
+  --> $DIR/bad-inputs-and-output.rs:14:17
    |
 LL | fn bar<T: Trait<method() -> (): Send>>() {}
    |                 ^^^^^^^^^^^^^^^^^^^^
@@ -31,26 +31,18 @@ LL | #![feature(return_type_notation, async_fn_in_trait)]
    = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
    = note: `#[warn(incomplete_features)]` on by default
 
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/bad-inputs-and-output.rs:3:34
-   |
-LL | #![feature(return_type_notation, async_fn_in_trait)]
-   |                                  ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-
 error: argument types not allowed with return type notation
-  --> $DIR/bad-inputs-and-output.rs:11:23
+  --> $DIR/bad-inputs-and-output.rs:10:23
    |
 LL | fn foo<T: Trait<method(i32): Send>>() {}
    |                       ^^^^^ help: remove the input types: `()`
 
 error: return type not allowed with return type notation
-  --> $DIR/bad-inputs-and-output.rs:15:25
+  --> $DIR/bad-inputs-and-output.rs:14:25
    |
 LL | fn bar<T: Trait<method() -> (): Send>>() {}
    |                         ^^^^^^ help: remove the return type
 
-error: aborting due to 5 previous errors; 2 warnings emitted
+error: aborting due to 5 previous errors; 1 warning emitted
 
 For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/ui/associated-type-bounds/return-type-notation/basic.rs b/tests/ui/associated-type-bounds/return-type-notation/basic.rs
index 0b7530b65d7..edc6a8e4caf 100644
--- a/tests/ui/associated-type-bounds/return-type-notation/basic.rs
+++ b/tests/ui/associated-type-bounds/return-type-notation/basic.rs
@@ -4,7 +4,6 @@
 
 #![feature(return_type_notation, async_fn_in_trait)]
 //~^ WARN the feature `return_type_notation` is incomplete
-//~| WARN the feature `async_fn_in_trait` is incomplete
 
 trait Foo {
     async fn method() -> Result<(), ()>;
diff --git a/tests/ui/associated-type-bounds/return-type-notation/basic.with.stderr b/tests/ui/associated-type-bounds/return-type-notation/basic.with.stderr
index 722c774cb33..9962f4706b3 100644
--- a/tests/ui/associated-type-bounds/return-type-notation/basic.with.stderr
+++ b/tests/ui/associated-type-bounds/return-type-notation/basic.with.stderr
@@ -7,13 +7,5 @@ LL | #![feature(return_type_notation, async_fn_in_trait)]
    = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
    = note: `#[warn(incomplete_features)]` on by default
 
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/basic.rs:5:34
-   |
-LL | #![feature(return_type_notation, async_fn_in_trait)]
-   |                                  ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-
-warning: 2 warnings emitted
+warning: 1 warning emitted
 
diff --git a/tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr b/tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr
index 1645d8c2650..c2da4f57696 100644
--- a/tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr
+++ b/tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr
@@ -7,31 +7,23 @@ LL | #![feature(return_type_notation, async_fn_in_trait)]
    = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
    = note: `#[warn(incomplete_features)]` on by default
 
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/basic.rs:5:34
-   |
-LL | #![feature(return_type_notation, async_fn_in_trait)]
-   |                                  ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-
 error: future cannot be sent between threads safely
-  --> $DIR/basic.rs:24:13
+  --> $DIR/basic.rs:23:13
    |
 LL |     is_send(foo::<T>());
    |             ^^^^^^^^^^ future returned by `foo` is not `Send`
    |
    = help: within `impl Future<Output = Result<(), ()>>`, the trait `Send` is not implemented for `impl Future<Output = Result<(), ()>>`
 note: future is not `Send` as it awaits another future which is not `Send`
-  --> $DIR/basic.rs:14:5
+  --> $DIR/basic.rs:13:5
    |
 LL |     T::method().await?;
    |     ^^^^^^^^^^^ await occurs here on type `impl Future<Output = Result<(), ()>>`, which is not `Send`
 note: required by a bound in `is_send`
-  --> $DIR/basic.rs:18:20
+  --> $DIR/basic.rs:17:20
    |
 LL | fn is_send(_: impl Send) {}
    |                    ^^^^ required by this bound in `is_send`
 
-error: aborting due to previous error; 2 warnings emitted
+error: aborting due to previous error; 1 warning emitted
 
diff --git a/tests/ui/associated-type-bounds/return-type-notation/equality.rs b/tests/ui/associated-type-bounds/return-type-notation/equality.rs
index 75f757e9025..6884305d7b3 100644
--- a/tests/ui/associated-type-bounds/return-type-notation/equality.rs
+++ b/tests/ui/associated-type-bounds/return-type-notation/equality.rs
@@ -2,7 +2,6 @@
 
 #![feature(return_type_notation, async_fn_in_trait)]
 //~^ WARN the feature `return_type_notation` is incomplete
-//~| WARN the feature `async_fn_in_trait` is incomplete
 
 use std::future::Future;
 
diff --git a/tests/ui/associated-type-bounds/return-type-notation/equality.stderr b/tests/ui/associated-type-bounds/return-type-notation/equality.stderr
index c5b2e5710d4..490bfdc4c3c 100644
--- a/tests/ui/associated-type-bounds/return-type-notation/equality.stderr
+++ b/tests/ui/associated-type-bounds/return-type-notation/equality.stderr
@@ -7,19 +7,11 @@ LL | #![feature(return_type_notation, async_fn_in_trait)]
    = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
    = note: `#[warn(incomplete_features)]` on by default
 
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/equality.rs:3:34
-   |
-LL | #![feature(return_type_notation, async_fn_in_trait)]
-   |                                  ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-
 error: return type notation is not allowed to use type equality
-  --> $DIR/equality.rs:13:18
+  --> $DIR/equality.rs:12:18
    |
 LL | fn test<T: Trait<method() = Box<dyn Future<Output = ()>>>>() {}
    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to previous error; 2 warnings emitted
+error: aborting due to previous error; 1 warning emitted
 
diff --git a/tests/ui/associated-type-bounds/return-type-notation/missing.rs b/tests/ui/associated-type-bounds/return-type-notation/missing.rs
index 7b98a5cdafd..b84b5a717b7 100644
--- a/tests/ui/associated-type-bounds/return-type-notation/missing.rs
+++ b/tests/ui/associated-type-bounds/return-type-notation/missing.rs
@@ -2,7 +2,6 @@
 
 #![feature(return_type_notation, async_fn_in_trait)]
 //~^ WARN the feature `return_type_notation` is incomplete
-//~| WARN the feature `async_fn_in_trait` is incomplete
 
 trait Trait {
     async fn method() {}
diff --git a/tests/ui/associated-type-bounds/return-type-notation/missing.stderr b/tests/ui/associated-type-bounds/return-type-notation/missing.stderr
index 34f5bda884d..954d9f74767 100644
--- a/tests/ui/associated-type-bounds/return-type-notation/missing.stderr
+++ b/tests/ui/associated-type-bounds/return-type-notation/missing.stderr
@@ -7,19 +7,11 @@ LL | #![feature(return_type_notation, async_fn_in_trait)]
    = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
    = note: `#[warn(incomplete_features)]` on by default
 
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/missing.rs:3:34
-   |
-LL | #![feature(return_type_notation, async_fn_in_trait)]
-   |                                  ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-
 error: cannot find associated function `methid` in trait `Trait`
-  --> $DIR/missing.rs:11:17
+  --> $DIR/missing.rs:10:17
    |
 LL | fn bar<T: Trait<methid(): Send>>() {}
    |                 ^^^^^^^^^^^^^^
 
-error: aborting due to previous error; 2 warnings emitted
+error: aborting due to previous error; 1 warning emitted
 
diff --git a/tests/ui/async-await/in-trait/async-default-fn-overridden.current.stderr b/tests/ui/async-await/in-trait/async-default-fn-overridden.current.stderr
deleted file mode 100644
index 2142ee232ca..00000000000
--- a/tests/ui/async-await/in-trait/async-default-fn-overridden.current.stderr
+++ /dev/null
@@ -1,11 +0,0 @@
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/async-default-fn-overridden.rs:6:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
-warning: 1 warning emitted
-
diff --git a/tests/ui/async-await/in-trait/async-default-fn-overridden.next.stderr b/tests/ui/async-await/in-trait/async-default-fn-overridden.next.stderr
deleted file mode 100644
index 2142ee232ca..00000000000
--- a/tests/ui/async-await/in-trait/async-default-fn-overridden.next.stderr
+++ /dev/null
@@ -1,11 +0,0 @@
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/async-default-fn-overridden.rs:6:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
-warning: 1 warning emitted
-
diff --git a/tests/ui/async-await/in-trait/async-default-fn-overridden.rs b/tests/ui/async-await/in-trait/async-default-fn-overridden.rs
index dd1af93d706..99c3ba6a3c2 100644
--- a/tests/ui/async-await/in-trait/async-default-fn-overridden.rs
+++ b/tests/ui/async-await/in-trait/async-default-fn-overridden.rs
@@ -4,7 +4,6 @@
 // revisions: current next
 
 #![feature(async_fn_in_trait)]
-//~^ WARN the feature `async_fn_in_trait` is incomplete and may not be safe to use
 
 use std::future::Future;
 
diff --git a/tests/ui/async-await/in-trait/bad-signatures.current.stderr b/tests/ui/async-await/in-trait/bad-signatures.current.stderr
index 5a05b080c3e..ae590fb057f 100644
--- a/tests/ui/async-await/in-trait/bad-signatures.current.stderr
+++ b/tests/ui/async-await/in-trait/bad-signatures.current.stderr
@@ -1,11 +1,11 @@
 error: expected identifier, found keyword `self`
-  --> $DIR/bad-signatures.rs:9:23
+  --> $DIR/bad-signatures.rs:8:23
    |
 LL |     async fn bar(&abc self);
    |                       ^^^^ expected identifier, found keyword
 
 error: expected one of `:`, `@`, or `|`, found keyword `self`
-  --> $DIR/bad-signatures.rs:9:23
+  --> $DIR/bad-signatures.rs:8:23
    |
 LL |     async fn bar(&abc self);
    |                  -----^^^^
@@ -13,14 +13,5 @@ LL |     async fn bar(&abc self);
    |                  |    expected one of `:`, `@`, or `|`
    |                  help: declare the type after the parameter binding: `<identifier>: <type>`
 
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/bad-signatures.rs:5:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
-error: aborting due to 2 previous errors; 1 warning emitted
+error: aborting due to 2 previous errors
 
diff --git a/tests/ui/async-await/in-trait/bad-signatures.next.stderr b/tests/ui/async-await/in-trait/bad-signatures.next.stderr
index 5a05b080c3e..ae590fb057f 100644
--- a/tests/ui/async-await/in-trait/bad-signatures.next.stderr
+++ b/tests/ui/async-await/in-trait/bad-signatures.next.stderr
@@ -1,11 +1,11 @@
 error: expected identifier, found keyword `self`
-  --> $DIR/bad-signatures.rs:9:23
+  --> $DIR/bad-signatures.rs:8:23
    |
 LL |     async fn bar(&abc self);
    |                       ^^^^ expected identifier, found keyword
 
 error: expected one of `:`, `@`, or `|`, found keyword `self`
-  --> $DIR/bad-signatures.rs:9:23
+  --> $DIR/bad-signatures.rs:8:23
    |
 LL |     async fn bar(&abc self);
    |                  -----^^^^
@@ -13,14 +13,5 @@ LL |     async fn bar(&abc self);
    |                  |    expected one of `:`, `@`, or `|`
    |                  help: declare the type after the parameter binding: `<identifier>: <type>`
 
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/bad-signatures.rs:5:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
-error: aborting due to 2 previous errors; 1 warning emitted
+error: aborting due to 2 previous errors
 
diff --git a/tests/ui/async-await/in-trait/bad-signatures.rs b/tests/ui/async-await/in-trait/bad-signatures.rs
index e0093be8cb3..4baddd8ccb8 100644
--- a/tests/ui/async-await/in-trait/bad-signatures.rs
+++ b/tests/ui/async-await/in-trait/bad-signatures.rs
@@ -3,7 +3,6 @@
 // revisions: current next
 
 #![feature(async_fn_in_trait)]
-//~^ WARN the feature `async_fn_in_trait` is incomplete
 
 trait MyTrait {
     async fn bar(&abc self);
diff --git a/tests/ui/async-await/in-trait/dont-project-to-specializable-projection.current.stderr b/tests/ui/async-await/in-trait/dont-project-to-specializable-projection.current.stderr
index 1e67cdca248..eec5ab06539 100644
--- a/tests/ui/async-await/in-trait/dont-project-to-specializable-projection.current.stderr
+++ b/tests/ui/async-await/in-trait/dont-project-to-specializable-projection.current.stderr
@@ -1,12 +1,3 @@
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/dont-project-to-specializable-projection.rs:6:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
 error: async associated function in trait cannot be specialized
   --> $DIR/dont-project-to-specializable-projection.rs:16:5
    |
@@ -15,5 +6,5 @@ LL |     default async fn foo(_: T) -> &'static str {
    |
    = note: specialization behaves in inconsistent and surprising ways with `#![feature(async_fn_in_trait)]`, and for now is disallowed
 
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to previous error
 
diff --git a/tests/ui/async-await/in-trait/dont-project-to-specializable-projection.next.stderr b/tests/ui/async-await/in-trait/dont-project-to-specializable-projection.next.stderr
index fa89c6b77e0..25a7f3bb56a 100644
--- a/tests/ui/async-await/in-trait/dont-project-to-specializable-projection.next.stderr
+++ b/tests/ui/async-await/in-trait/dont-project-to-specializable-projection.next.stderr
@@ -1,12 +1,3 @@
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/dont-project-to-specializable-projection.rs:6:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0053]: method `foo` has an incompatible type for trait
   --> $DIR/dont-project-to-specializable-projection.rs:16:35
    |
@@ -29,6 +20,6 @@ LL |     default async fn foo(_: T) -> &'static str {
    |
    = note: specialization behaves in inconsistent and surprising ways with `#![feature(async_fn_in_trait)]`, and for now is disallowed
 
-error: aborting due to 2 previous errors; 1 warning emitted
+error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0053`.
diff --git a/tests/ui/async-await/in-trait/lifetime-mismatch.current.stderr b/tests/ui/async-await/in-trait/lifetime-mismatch.current.stderr
index 0e9477544a4..69e7c65ee3e 100644
--- a/tests/ui/async-await/in-trait/lifetime-mismatch.current.stderr
+++ b/tests/ui/async-await/in-trait/lifetime-mismatch.current.stderr
@@ -1,14 +1,5 @@
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/lifetime-mismatch.rs:5:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0195]: lifetime parameters or bounds on method `foo` do not match the trait declaration
-  --> $DIR/lifetime-mismatch.rs:14:17
+  --> $DIR/lifetime-mismatch.rs:13:17
    |
 LL |     async fn foo<'a>(&self);
    |                 ---- lifetimes in impl do not match this method in trait
@@ -16,6 +7,6 @@ LL |     async fn foo<'a>(&self);
 LL |     async fn foo(&self) {}
    |                 ^ lifetimes do not match method in trait
 
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0195`.
diff --git a/tests/ui/async-await/in-trait/lifetime-mismatch.next.stderr b/tests/ui/async-await/in-trait/lifetime-mismatch.next.stderr
index 0e9477544a4..69e7c65ee3e 100644
--- a/tests/ui/async-await/in-trait/lifetime-mismatch.next.stderr
+++ b/tests/ui/async-await/in-trait/lifetime-mismatch.next.stderr
@@ -1,14 +1,5 @@
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/lifetime-mismatch.rs:5:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0195]: lifetime parameters or bounds on method `foo` do not match the trait declaration
-  --> $DIR/lifetime-mismatch.rs:14:17
+  --> $DIR/lifetime-mismatch.rs:13:17
    |
 LL |     async fn foo<'a>(&self);
    |                 ---- lifetimes in impl do not match this method in trait
@@ -16,6 +7,6 @@ LL |     async fn foo<'a>(&self);
 LL |     async fn foo(&self) {}
    |                 ^ lifetimes do not match method in trait
 
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0195`.
diff --git a/tests/ui/async-await/in-trait/lifetime-mismatch.rs b/tests/ui/async-await/in-trait/lifetime-mismatch.rs
index 5ff5a01a1ee..46183f72bce 100644
--- a/tests/ui/async-await/in-trait/lifetime-mismatch.rs
+++ b/tests/ui/async-await/in-trait/lifetime-mismatch.rs
@@ -3,7 +3,6 @@
 // revisions: current next
 
 #![feature(async_fn_in_trait)]
-//~^ WARN the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
 
 trait MyTrait {
     async fn foo<'a>(&self);
diff --git a/tests/ui/async-await/in-trait/missing-send-bound.current.stderr b/tests/ui/async-await/in-trait/missing-send-bound.current.stderr
index 319ed582e27..9aa37f7437e 100644
--- a/tests/ui/async-await/in-trait/missing-send-bound.current.stderr
+++ b/tests/ui/async-await/in-trait/missing-send-bound.current.stderr
@@ -1,29 +1,20 @@
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/missing-send-bound.rs:5:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
 error: future cannot be sent between threads safely
-  --> $DIR/missing-send-bound.rs:17:20
+  --> $DIR/missing-send-bound.rs:16:20
    |
 LL |     assert_is_send(test::<T>());
    |                    ^^^^^^^^^^^ future returned by `test` is not `Send`
    |
    = help: within `impl Future<Output = ()>`, the trait `Send` is not implemented for `impl Future<Output = ()>`
 note: future is not `Send` as it awaits another future which is not `Send`
-  --> $DIR/missing-send-bound.rs:13:5
+  --> $DIR/missing-send-bound.rs:12:5
    |
 LL |     T::bar().await;
    |     ^^^^^^^^ await occurs here on type `impl Future<Output = ()>`, which is not `Send`
 note: required by a bound in `assert_is_send`
-  --> $DIR/missing-send-bound.rs:21:27
+  --> $DIR/missing-send-bound.rs:20:27
    |
 LL | fn assert_is_send(_: impl Send) {}
    |                           ^^^^ required by this bound in `assert_is_send`
 
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to previous error
 
diff --git a/tests/ui/async-await/in-trait/missing-send-bound.next.stderr b/tests/ui/async-await/in-trait/missing-send-bound.next.stderr
index 319ed582e27..9aa37f7437e 100644
--- a/tests/ui/async-await/in-trait/missing-send-bound.next.stderr
+++ b/tests/ui/async-await/in-trait/missing-send-bound.next.stderr
@@ -1,29 +1,20 @@
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/missing-send-bound.rs:5:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
 error: future cannot be sent between threads safely
-  --> $DIR/missing-send-bound.rs:17:20
+  --> $DIR/missing-send-bound.rs:16:20
    |
 LL |     assert_is_send(test::<T>());
    |                    ^^^^^^^^^^^ future returned by `test` is not `Send`
    |
    = help: within `impl Future<Output = ()>`, the trait `Send` is not implemented for `impl Future<Output = ()>`
 note: future is not `Send` as it awaits another future which is not `Send`
-  --> $DIR/missing-send-bound.rs:13:5
+  --> $DIR/missing-send-bound.rs:12:5
    |
 LL |     T::bar().await;
    |     ^^^^^^^^ await occurs here on type `impl Future<Output = ()>`, which is not `Send`
 note: required by a bound in `assert_is_send`
-  --> $DIR/missing-send-bound.rs:21:27
+  --> $DIR/missing-send-bound.rs:20:27
    |
 LL | fn assert_is_send(_: impl Send) {}
    |                           ^^^^ required by this bound in `assert_is_send`
 
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to previous error
 
diff --git a/tests/ui/async-await/in-trait/missing-send-bound.rs b/tests/ui/async-await/in-trait/missing-send-bound.rs
index 705fcf322f9..b602865cbb1 100644
--- a/tests/ui/async-await/in-trait/missing-send-bound.rs
+++ b/tests/ui/async-await/in-trait/missing-send-bound.rs
@@ -3,7 +3,6 @@
 // revisions: current next
 
 #![feature(async_fn_in_trait)]
-//~^ WARN the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
 
 trait Foo {
     async fn bar();
diff --git a/tests/ui/async-await/in-trait/object-safety.current.stderr b/tests/ui/async-await/in-trait/object-safety.current.stderr
index 90e049a9960..7f7ec39142c 100644
--- a/tests/ui/async-await/in-trait/object-safety.current.stderr
+++ b/tests/ui/async-await/in-trait/object-safety.current.stderr
@@ -1,20 +1,11 @@
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/object-safety.rs:5:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0038]: the trait `Foo` cannot be made into an object
-  --> $DIR/object-safety.rs:13:12
+  --> $DIR/object-safety.rs:12:12
    |
 LL |     let x: &dyn Foo = todo!();
    |            ^^^^^^^^ `Foo` cannot be made into an object
    |
 note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
-  --> $DIR/object-safety.rs:9:14
+  --> $DIR/object-safety.rs:8:14
    |
 LL | trait Foo {
    |       --- this trait cannot be made into an object...
@@ -22,6 +13,6 @@ LL |     async fn foo(&self);
    |              ^^^ ...because method `foo` is `async`
    = help: consider moving `foo` to another trait
 
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0038`.
diff --git a/tests/ui/async-await/in-trait/object-safety.next.stderr b/tests/ui/async-await/in-trait/object-safety.next.stderr
index 90e049a9960..7f7ec39142c 100644
--- a/tests/ui/async-await/in-trait/object-safety.next.stderr
+++ b/tests/ui/async-await/in-trait/object-safety.next.stderr
@@ -1,20 +1,11 @@
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/object-safety.rs:5:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0038]: the trait `Foo` cannot be made into an object
-  --> $DIR/object-safety.rs:13:12
+  --> $DIR/object-safety.rs:12:12
    |
 LL |     let x: &dyn Foo = todo!();
    |            ^^^^^^^^ `Foo` cannot be made into an object
    |
 note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
-  --> $DIR/object-safety.rs:9:14
+  --> $DIR/object-safety.rs:8:14
    |
 LL | trait Foo {
    |       --- this trait cannot be made into an object...
@@ -22,6 +13,6 @@ LL |     async fn foo(&self);
    |              ^^^ ...because method `foo` is `async`
    = help: consider moving `foo` to another trait
 
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0038`.
diff --git a/tests/ui/async-await/in-trait/object-safety.rs b/tests/ui/async-await/in-trait/object-safety.rs
index f67286a20a2..4edad1512e9 100644
--- a/tests/ui/async-await/in-trait/object-safety.rs
+++ b/tests/ui/async-await/in-trait/object-safety.rs
@@ -3,7 +3,6 @@
 // revisions: current next
 
 #![feature(async_fn_in_trait)]
-//~^ WARN the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
 
 trait Foo {
     async fn foo(&self);
diff --git a/tests/ui/async-await/in-trait/return-type-suggestion.current.stderr b/tests/ui/async-await/in-trait/return-type-suggestion.current.stderr
index a5efc757156..6a107d7beb8 100644
--- a/tests/ui/async-await/in-trait/return-type-suggestion.current.stderr
+++ b/tests/ui/async-await/in-trait/return-type-suggestion.current.stderr
@@ -1,14 +1,5 @@
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/return-type-suggestion.rs:5:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0308]: mismatched types
-  --> $DIR/return-type-suggestion.rs:10:9
+  --> $DIR/return-type-suggestion.rs:9:9
    |
 LL |         Ok(())
    |         ^^^^^^- help: consider using a semicolon here: `;`
@@ -18,6 +9,6 @@ LL |         Ok(())
    = note: expected unit type `()`
                    found enum `Result<(), _>`
 
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/async-await/in-trait/return-type-suggestion.next.stderr b/tests/ui/async-await/in-trait/return-type-suggestion.next.stderr
index a5efc757156..6a107d7beb8 100644
--- a/tests/ui/async-await/in-trait/return-type-suggestion.next.stderr
+++ b/tests/ui/async-await/in-trait/return-type-suggestion.next.stderr
@@ -1,14 +1,5 @@
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/return-type-suggestion.rs:5:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0308]: mismatched types
-  --> $DIR/return-type-suggestion.rs:10:9
+  --> $DIR/return-type-suggestion.rs:9:9
    |
 LL |         Ok(())
    |         ^^^^^^- help: consider using a semicolon here: `;`
@@ -18,6 +9,6 @@ LL |         Ok(())
    = note: expected unit type `()`
                    found enum `Result<(), _>`
 
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/async-await/in-trait/return-type-suggestion.rs b/tests/ui/async-await/in-trait/return-type-suggestion.rs
index 3de66306d9a..d63bccefa9f 100644
--- a/tests/ui/async-await/in-trait/return-type-suggestion.rs
+++ b/tests/ui/async-await/in-trait/return-type-suggestion.rs
@@ -3,7 +3,6 @@
 // revisions: current next
 
 #![feature(async_fn_in_trait)]
-//~^ WARN the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
 
 trait A {
     async fn e() {
diff --git a/tests/ui/async-await/return-type-notation/issue-110963-early.stderr b/tests/ui/async-await/return-type-notation/issue-110963-early.stderr
index b4a3924d8da..33e22dec3f7 100644
--- a/tests/ui/async-await/return-type-notation/issue-110963-early.stderr
+++ b/tests/ui/async-await/return-type-notation/issue-110963-early.stderr
@@ -7,14 +7,6 @@ LL | #![feature(return_type_notation)]
    = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
    = note: `#[warn(incomplete_features)]` on by default
 
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/issue-110963-early.rs:5:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-
 error: higher-ranked lifetime error
   --> $DIR/issue-110963-early.rs:15:5
    |
@@ -41,5 +33,5 @@ LL | |     });
    |
    = note: could not prove `[async block@$DIR/issue-110963-early.rs:15:11: 20:6]: Send`
 
-error: aborting due to 2 previous errors; 2 warnings emitted
+error: aborting due to 2 previous errors; 1 warning emitted
 
diff --git a/tests/ui/async-await/return-type-notation/issue-110963-late.rs b/tests/ui/async-await/return-type-notation/issue-110963-late.rs
index 2a35922eaa1..17b5d775d44 100644
--- a/tests/ui/async-await/return-type-notation/issue-110963-late.rs
+++ b/tests/ui/async-await/return-type-notation/issue-110963-late.rs
@@ -4,7 +4,6 @@
 #![feature(return_type_notation)]
 //~^ WARN the feature `return_type_notation` is incomplete
 #![feature(async_fn_in_trait)]
-//~^ WARN the feature `async_fn_in_trait` is incomplete
 
 trait HealthCheck {
     async fn check(&mut self) -> bool;
diff --git a/tests/ui/async-await/return-type-notation/issue-110963-late.stderr b/tests/ui/async-await/return-type-notation/issue-110963-late.stderr
index 36ef3ad0a4c..9c6966537a7 100644
--- a/tests/ui/async-await/return-type-notation/issue-110963-late.stderr
+++ b/tests/ui/async-await/return-type-notation/issue-110963-late.stderr
@@ -7,13 +7,5 @@ LL | #![feature(return_type_notation)]
    = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
    = note: `#[warn(incomplete_features)]` on by default
 
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/issue-110963-late.rs:6:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-
-warning: 2 warnings emitted
+warning: 1 warning emitted
 
diff --git a/tests/ui/feature-gates/feature-gate-return_type_notation.cfg.stderr b/tests/ui/feature-gates/feature-gate-return_type_notation.cfg.stderr
index c3a371e25e8..1bdb2574ead 100644
--- a/tests/ui/feature-gates/feature-gate-return_type_notation.cfg.stderr
+++ b/tests/ui/feature-gates/feature-gate-return_type_notation.cfg.stderr
@@ -1,5 +1,5 @@
 error[E0658]: return type notation is experimental
-  --> $DIR/feature-gate-return_type_notation.rs:15:17
+  --> $DIR/feature-gate-return_type_notation.rs:14:17
    |
 LL | fn foo<T: Trait<m(): Send>>() {}
    |                 ^^^^^^^^^
@@ -7,17 +7,8 @@ LL | fn foo<T: Trait<m(): Send>>() {}
    = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
    = help: add `#![feature(return_type_notation)]` to the crate attributes to enable
 
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/feature-gate-return_type_notation.rs:7:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
 error: parenthesized generic arguments cannot be used in associated type constraints
-  --> $DIR/feature-gate-return_type_notation.rs:15:17
+  --> $DIR/feature-gate-return_type_notation.rs:14:17
    |
 LL | fn foo<T: Trait<m(): Send>>() {}
    |                 ^--
@@ -25,12 +16,12 @@ LL | fn foo<T: Trait<m(): Send>>() {}
    |                  help: remove these parentheses
 
 error[E0220]: associated type `m` not found for `Trait`
-  --> $DIR/feature-gate-return_type_notation.rs:15:17
+  --> $DIR/feature-gate-return_type_notation.rs:14:17
    |
 LL | fn foo<T: Trait<m(): Send>>() {}
    |                 ^ associated type `m` not found
 
-error: aborting due to 3 previous errors; 1 warning emitted
+error: aborting due to 3 previous errors
 
 Some errors have detailed explanations: E0220, E0658.
 For more information about an error, try `rustc --explain E0220`.
diff --git a/tests/ui/feature-gates/feature-gate-return_type_notation.no.stderr b/tests/ui/feature-gates/feature-gate-return_type_notation.no.stderr
index 52c90c1565c..dd6ebb61038 100644
--- a/tests/ui/feature-gates/feature-gate-return_type_notation.no.stderr
+++ b/tests/ui/feature-gates/feature-gate-return_type_notation.no.stderr
@@ -1,14 +1,5 @@
-warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/feature-gate-return_type_notation.rs:7:12
-   |
-LL | #![feature(async_fn_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
 warning: return type notation is experimental
-  --> $DIR/feature-gate-return_type_notation.rs:15:17
+  --> $DIR/feature-gate-return_type_notation.rs:14:17
    |
 LL | fn foo<T: Trait<m(): Send>>() {}
    |                 ^^^^^^^^^
@@ -18,5 +9,5 @@ LL | fn foo<T: Trait<m(): Send>>() {}
    = warning: unstable syntax can change at any point in the future, causing a hard error!
    = note: for more information, see issue #65860 <https://github.com/rust-lang/rust/issues/65860>
 
-warning: 2 warnings emitted
+warning: 1 warning emitted
 
diff --git a/tests/ui/feature-gates/feature-gate-return_type_notation.rs b/tests/ui/feature-gates/feature-gate-return_type_notation.rs
index 5028b9ec9e3..d9bcb65feba 100644
--- a/tests/ui/feature-gates/feature-gate-return_type_notation.rs
+++ b/tests/ui/feature-gates/feature-gate-return_type_notation.rs
@@ -5,7 +5,6 @@
 // Since we're not adding new syntax, `cfg`'d out RTN must pass.
 
 #![feature(async_fn_in_trait)]
-//~^ WARN the feature `async_fn_in_trait` is incomplete
 
 trait Trait {
     async fn m();
diff --git a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.current.stderr b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.current.stderr
deleted file mode 100644
index 05c025cc169..00000000000
--- a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.current.stderr
+++ /dev/null
@@ -1,11 +0,0 @@
-warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/box-coerce-span-in-default.rs:5:12
-   |
-LL | #![feature(return_position_impl_trait_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
-warning: 1 warning emitted
-
diff --git a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.next.stderr b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.next.stderr
deleted file mode 100644
index 05c025cc169..00000000000
--- a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.next.stderr
+++ /dev/null
@@ -1,11 +0,0 @@
-warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/box-coerce-span-in-default.rs:5:12
-   |
-LL | #![feature(return_position_impl_trait_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
-warning: 1 warning emitted
-
diff --git a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.rs b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.rs
index 163bb4fcf77..f5290a5f4af 100644
--- a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.rs
+++ b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.rs
@@ -3,7 +3,6 @@
 // revisions: current next
 
 #![feature(return_position_impl_trait_in_trait)]
-//~^ WARN the feature `return_position_impl_trait_in_trait` is incomplete
 
 struct TestA {}
 struct TestB {}
diff --git a/tests/ui/impl-trait/in-trait/default-method-binder-shifting.current.stderr b/tests/ui/impl-trait/in-trait/default-method-binder-shifting.current.stderr
deleted file mode 100644
index a0c0589b9a1..00000000000
--- a/tests/ui/impl-trait/in-trait/default-method-binder-shifting.current.stderr
+++ /dev/null
@@ -1,11 +0,0 @@
-warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/default-method-binder-shifting.rs:5:12
-   |
-LL | #![feature(return_position_impl_trait_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
-warning: 1 warning emitted
-
diff --git a/tests/ui/impl-trait/in-trait/default-method-binder-shifting.next.stderr b/tests/ui/impl-trait/in-trait/default-method-binder-shifting.next.stderr
deleted file mode 100644
index a0c0589b9a1..00000000000
--- a/tests/ui/impl-trait/in-trait/default-method-binder-shifting.next.stderr
+++ /dev/null
@@ -1,11 +0,0 @@
-warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/default-method-binder-shifting.rs:5:12
-   |
-LL | #![feature(return_position_impl_trait_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
-warning: 1 warning emitted
-
diff --git a/tests/ui/impl-trait/in-trait/default-method-binder-shifting.rs b/tests/ui/impl-trait/in-trait/default-method-binder-shifting.rs
index de82544f293..187039f449c 100644
--- a/tests/ui/impl-trait/in-trait/default-method-binder-shifting.rs
+++ b/tests/ui/impl-trait/in-trait/default-method-binder-shifting.rs
@@ -3,7 +3,6 @@
 // revisions: current next
 
 #![feature(return_position_impl_trait_in_trait)]
-//~^ WARN the feature `return_position_impl_trait_in_trait` is incomplete
 
 trait Trait {
     type Type;
diff --git a/tests/ui/impl-trait/in-trait/default-method-constraint.current.stderr b/tests/ui/impl-trait/in-trait/default-method-constraint.current.stderr
deleted file mode 100644
index 7bb79911f56..00000000000
--- a/tests/ui/impl-trait/in-trait/default-method-constraint.current.stderr
+++ /dev/null
@@ -1,11 +0,0 @@
-warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/default-method-constraint.rs:7:12
-   |
-LL | #![feature(return_position_impl_trait_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
-warning: 1 warning emitted
-
diff --git a/tests/ui/impl-trait/in-trait/default-method-constraint.next.stderr b/tests/ui/impl-trait/in-trait/default-method-constraint.next.stderr
deleted file mode 100644
index 7bb79911f56..00000000000
--- a/tests/ui/impl-trait/in-trait/default-method-constraint.next.stderr
+++ /dev/null
@@ -1,11 +0,0 @@
-warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/default-method-constraint.rs:7:12
-   |
-LL | #![feature(return_position_impl_trait_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
-warning: 1 warning emitted
-
diff --git a/tests/ui/impl-trait/in-trait/default-method-constraint.rs b/tests/ui/impl-trait/in-trait/default-method-constraint.rs
index e85fe3c8626..4f0bf2e7dfe 100644
--- a/tests/ui/impl-trait/in-trait/default-method-constraint.rs
+++ b/tests/ui/impl-trait/in-trait/default-method-constraint.rs
@@ -5,7 +5,6 @@
 // This didn't work in the previous default RPITIT method hack attempt
 
 #![feature(return_position_impl_trait_in_trait)]
-//~^ WARN the feature `return_position_impl_trait_in_trait` is incomplete
 
 trait Foo {
     fn bar(x: bool) -> impl Sized {
diff --git a/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.current.stderr b/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.current.stderr
index b8a793e1a7b..d4d0124a659 100644
--- a/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.current.stderr
+++ b/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.current.stderr
@@ -1,14 +1,5 @@
-warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/dont-project-to-rpitit-with-no-value.rs:4:12
-   |
-LL | #![feature(return_position_impl_trait_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0046]: not all trait items implemented, missing: `foo`
-  --> $DIR/dont-project-to-rpitit-with-no-value.rs:12:1
+  --> $DIR/dont-project-to-rpitit-with-no-value.rs:11:1
    |
 LL |     fn foo(&self) -> impl Sized;
    |     ---------------------------- `foo` from trait
@@ -16,6 +7,6 @@ LL |     fn foo(&self) -> impl Sized;
 LL | impl MyTrait for i32 {
    | ^^^^^^^^^^^^^^^^^^^^ missing `foo` in implementation
 
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0046`.
diff --git a/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.next.stderr b/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.next.stderr
index b8a793e1a7b..d4d0124a659 100644
--- a/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.next.stderr
+++ b/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.next.stderr
@@ -1,14 +1,5 @@
-warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/dont-project-to-rpitit-with-no-value.rs:4:12
-   |
-LL | #![feature(return_position_impl_trait_in_trait)]
-   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0046]: not all trait items implemented, missing: `foo`
-  --> $DIR/dont-project-to-rpitit-with-no-value.rs:12:1
+  --> $DIR/dont-project-to-rpitit-with-no-value.rs:11:1
    |
 LL |     fn foo(&self) -> impl Sized;
    |     ---------------------------- `foo` from trait
@@ -16,6 +7,6 @@ LL |     fn foo(&self) -> impl Sized;
 LL | impl MyTrait for i32 {
    | ^^^^^^^^^^^^^^^^^^^^ missing `foo` in implementation
 
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0046`.
diff --git a/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.rs b/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.rs
index 8329ce1f835..4d50b8c9278 100644
--- a/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.rs
+++ b/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.rs
@@ -2,7 +2,6 @@
 // revisions: current next
 
 #![feature(return_position_impl_trait_in_trait)]
-//~^ WARN the feature `return_position_impl_trait_in_trait` is incomplete
 
 trait MyTrait {
     fn foo(&self) -> impl Sized;