Make feature negative_bounds internal

compiler/rustc_feature/src/unstable.rs

@@ -210,7 +210,7 @@ declare_features! (
     /// Allows the `multiple_supertrait_upcastable` lint.
     (unstable, multiple_supertrait_upcastable, "1.69.0", None),
     /// Allow negative trait bounds. This is an internal-only feature for testing the trait solver!
-    (incomplete, negative_bounds, "1.71.0", None),
+    (internal, negative_bounds, "1.71.0", None),
     /// Allows using `#[omit_gdb_pretty_printer_section]`.
     (internal, omit_gdb_pretty_printer_section, "1.5.0", None),
     /// Allows using `#[prelude_import]` on glob `use` items.

tests/ui/traits/negative-bounds/associated-constraints.rs

@@ -1,5 +1,4 @@
 #![feature(negative_bounds, associated_type_bounds)]
-//~^ WARN the feature `negative_bounds` is incomplete and may not be safe to use and/or cause compiler crashes
 
 trait Trait {
     type Assoc;

tests/ui/traits/negative-bounds/associated-constraints.stderr

@@ -1,40 +1,32 @@
 error: associated type constraints not allowed on negative bounds
-  --> $DIR/associated-constraints.rs:8:19
+  --> $DIR/associated-constraints.rs:7:19
    |
 LL | fn test<T: !Trait<Assoc = i32>>() {}
    |                   ^^^^^^^^^^^
 
 error: associated type constraints not allowed on negative bounds
-  --> $DIR/associated-constraints.rs:11:31
+  --> $DIR/associated-constraints.rs:10:31
    |
 LL | fn test2<T>() where T: !Trait<Assoc = i32> {}
    |                               ^^^^^^^^^^^
 
 error: associated type constraints not allowed on negative bounds
-  --> $DIR/associated-constraints.rs:14:20
+  --> $DIR/associated-constraints.rs:13:20
    |
 LL | fn test3<T: !Trait<Assoc: Send>>() {}
    |                    ^^^^^^^^^^^
 
 error: associated type constraints not allowed on negative bounds
-  --> $DIR/associated-constraints.rs:17:31
+  --> $DIR/associated-constraints.rs:16:31
    |
 LL | fn test4<T>() where T: !Trait<Assoc: Send> {}
    |                               ^^^^^^^^^^^
 
 error: parenthetical notation may not be used for negative bounds
-  --> $DIR/associated-constraints.rs:20:25
+  --> $DIR/associated-constraints.rs:19:25
    |
 LL | fn test5<T>() where T: !Fn() -> i32 {}
    |                         ^^^^^^^^^^^
 
-warning: the feature `negative_bounds` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/associated-constraints.rs:1:12
-   |
-LL | #![feature(negative_bounds, associated_type_bounds)]
-   |            ^^^^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-
-error: aborting due to 5 previous errors; 1 warning emitted
+error: aborting due to 5 previous errors
 

tests/ui/traits/negative-bounds/opaque-type-unsatisfied-bound.rs

@@ -1,7 +1,6 @@
 // compile-flags: -Znext-solver
 
 #![feature(negative_bounds, negative_impls)]
-//~^ WARN the feature `negative_bounds` is incomplete and may not be safe to use and/or cause compiler crashes
 
 trait Trait {}
 impl !Trait for () {}

tests/ui/traits/negative-bounds/opaque-type-unsatisfied-bound.stderr

@@ -1,13 +1,5 @@
-warning: the feature `negative_bounds` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/opaque-type-unsatisfied-bound.rs:3:12
-   |
-LL | #![feature(negative_bounds, negative_impls)]
-   |            ^^^^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0308]: mismatched types
-  --> $DIR/opaque-type-unsatisfied-bound.rs:16:36
+  --> $DIR/opaque-type-unsatisfied-bound.rs:15:36
    |
 LL | fn weird0() -> impl Sized + !Sized {}
    |                ------------------- ^^ types differ
@@ -18,13 +10,13 @@ LL | fn weird0() -> impl Sized + !Sized {}
                 found unit type `()`
 
 error[E0271]: type mismatch resolving `() == impl !Sized`
-  --> $DIR/opaque-type-unsatisfied-bound.rs:16:16
+  --> $DIR/opaque-type-unsatisfied-bound.rs:15:16
    |
 LL | fn weird0() -> impl Sized + !Sized {}
    |                ^^^^^^^^^^^^^^^^^^^ types differ
 
 error[E0308]: mismatched types
-  --> $DIR/opaque-type-unsatisfied-bound.rs:19:36
+  --> $DIR/opaque-type-unsatisfied-bound.rs:18:36
    |
 LL | fn weird1() -> impl Sized + !Sized {}
    |                ------------------- ^^ types differ
@@ -35,13 +27,13 @@ LL | fn weird1() -> impl Sized + !Sized {}
                 found unit type `()`
 
 error[E0271]: type mismatch resolving `() == impl !Sized`
-  --> $DIR/opaque-type-unsatisfied-bound.rs:19:16
+  --> $DIR/opaque-type-unsatisfied-bound.rs:18:16
    |
 LL | fn weird1() -> impl Sized + !Sized {}
    |                ^^^^^^^^^^^^^^^^^^^ types differ
 
 error[E0308]: mismatched types
-  --> $DIR/opaque-type-unsatisfied-bound.rs:22:36
+  --> $DIR/opaque-type-unsatisfied-bound.rs:21:36
    |
 LL | fn weird2() -> impl !Sized + Sized {}
    |                ------------------- ^^ types differ
@@ -52,26 +44,26 @@ LL | fn weird2() -> impl !Sized + Sized {}
                 found unit type `()`
 
 error[E0271]: type mismatch resolving `() == impl !Sized`
-  --> $DIR/opaque-type-unsatisfied-bound.rs:22:16
+  --> $DIR/opaque-type-unsatisfied-bound.rs:21:16
    |
 LL | fn weird2() -> impl !Sized + Sized {}
    |                ^^^^^^^^^^^^^^^^^^^ types differ
 
 error[E0277]: the trait bound `impl !Trait: Trait` is not satisfied
-  --> $DIR/opaque-type-unsatisfied-bound.rs:13:13
+  --> $DIR/opaque-type-unsatisfied-bound.rs:12:13
    |
 LL |     consume(produce());
    |     ------- ^^^^^^^^^ the trait `Trait` is not implemented for `impl !Trait`
    |     |
    |     required by a bound introduced by this call
    |
 note: required by a bound in `consume`
-  --> $DIR/opaque-type-unsatisfied-bound.rs:10:20
+  --> $DIR/opaque-type-unsatisfied-bound.rs:9:20
    |
 LL | fn consume(_: impl Trait) {}
    |                    ^^^^^ required by this bound in `consume`
 
-error: aborting due to 7 previous errors; 1 warning emitted
+error: aborting due to 7 previous errors
 
 Some errors have detailed explanations: E0271, E0277, E0308.
 For more information about an error, try `rustc --explain E0271`.

tests/ui/traits/negative-bounds/opaque-type-unsatisfied-fn-bound.rs

@@ -1,7 +1,6 @@
 // compile-flags: -Znext-solver
 
 #![feature(negative_bounds, unboxed_closures)]
-//~^ WARN the feature `negative_bounds` is incomplete and may not be safe to use and/or cause compiler crashes
 
 fn produce() -> impl !Fn<(u32,)> {}
 //~^ ERROR mismatched types

tests/ui/traits/negative-bounds/opaque-type-unsatisfied-fn-bound.stderr

@@ -1,13 +1,5 @@
-warning: the feature `negative_bounds` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/opaque-type-unsatisfied-fn-bound.rs:3:12
-   |
-LL | #![feature(negative_bounds, unboxed_closures)]
-   |            ^^^^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0308]: mismatched types
-  --> $DIR/opaque-type-unsatisfied-fn-bound.rs:6:34
+  --> $DIR/opaque-type-unsatisfied-fn-bound.rs:5:34
    |
 LL | fn produce() -> impl !Fn<(u32,)> {}
    |                 ---------------- ^^ types differ
@@ -18,12 +10,12 @@ LL | fn produce() -> impl !Fn<(u32,)> {}
                 found unit type `()`
 
 error[E0271]: type mismatch resolving `() == impl !Fn<(u32,)>`
-  --> $DIR/opaque-type-unsatisfied-fn-bound.rs:6:17
+  --> $DIR/opaque-type-unsatisfied-fn-bound.rs:5:17
    |
 LL | fn produce() -> impl !Fn<(u32,)> {}
    |                 ^^^^^^^^^^^^^^^^ types differ
 
-error: aborting due to 2 previous errors; 1 warning emitted
+error: aborting due to 2 previous errors
 
 Some errors have detailed explanations: E0271, E0308.
 For more information about an error, try `rustc --explain E0271`.

tests/ui/traits/negative-bounds/simple.rs

@@ -1,5 +1,4 @@
 #![feature(negative_bounds, negative_impls)]
-//~^ WARN the feature `negative_bounds` is incomplete and may not be safe to use and/or cause compiler crashes
 
 fn not_copy<T: !Copy>() {}
 

tests/ui/traits/negative-bounds/simple.stderr

@@ -1,44 +1,36 @@
-warning: the feature `negative_bounds` is incomplete and may not be safe to use and/or cause compiler crashes
-  --> $DIR/simple.rs:1:12
-   |
-LL | #![feature(negative_bounds, negative_impls)]
-   |            ^^^^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0277]: the trait bound `T: !Copy` is not satisfied
-  --> $DIR/simple.rs:11:16
+  --> $DIR/simple.rs:10:16
    |
 LL |     not_copy::<T>();
    |                ^ the trait `!Copy` is not implemented for `T`
    |
 note: required by a bound in `not_copy`
-  --> $DIR/simple.rs:4:16
+  --> $DIR/simple.rs:3:16
    |
 LL | fn not_copy<T: !Copy>() {}
    |                ^^^^^ required by this bound in `not_copy`
 
 error[E0277]: the trait bound `T: !Copy` is not satisfied
-  --> $DIR/simple.rs:16:16
+  --> $DIR/simple.rs:15:16
    |
 LL |     not_copy::<T>();
    |                ^ the trait `!Copy` is not implemented for `T`
    |
 note: required by a bound in `not_copy`
-  --> $DIR/simple.rs:4:16
+  --> $DIR/simple.rs:3:16
    |
 LL | fn not_copy<T: !Copy>() {}
    |                ^^^^^ required by this bound in `not_copy`
 
 error[E0277]: the trait bound `Copyable: !Copy` is not satisfied
-  --> $DIR/simple.rs:31:16
+  --> $DIR/simple.rs:30:16
    |
 LL |     not_copy::<Copyable>();
    |                ^^^^^^^^ the trait `!Copy` is not implemented for `Copyable`
    |
    = help: the trait `Copy` is implemented for `Copyable`
 note: required by a bound in `not_copy`
-  --> $DIR/simple.rs:4:16
+  --> $DIR/simple.rs:3:16
    |
 LL | fn not_copy<T: !Copy>() {}
    |                ^^^^^ required by this bound in `not_copy`
@@ -49,13 +41,13 @@ LL | struct Copyable;
    |
 
 error[E0277]: the trait bound `NotNecessarilyCopyable: !Copy` is not satisfied
-  --> $DIR/simple.rs:38:16
+  --> $DIR/simple.rs:37:16
    |
 LL |     not_copy::<NotNecessarilyCopyable>();
    |                ^^^^^^^^^^^^^^^^^^^^^^ the trait `!Copy` is not implemented for `NotNecessarilyCopyable`
    |
 note: required by a bound in `not_copy`
-  --> $DIR/simple.rs:4:16
+  --> $DIR/simple.rs:3:16
    |
 LL | fn not_copy<T: !Copy>() {}
    |                ^^^^^ required by this bound in `not_copy`
@@ -65,6 +57,6 @@ LL + #[derive(Copy)]
 LL | struct NotNecessarilyCopyable;
    |
 
-error: aborting due to 4 previous errors; 1 warning emitted
+error: aborting due to 4 previous errors
 
 For more information about this error, try `rustc --explain E0277`.

tests/ui/traits/negative-bounds/supertrait.rs

@@ -1,7 +1,6 @@
 // check-pass
 
 #![feature(negative_bounds)]
-//~^ WARN the feature `negative_bounds` is incomplete
 
 trait A: !B {}
 trait B: !A {}