Remove #[track_caller] from incomplete features list.

src/librustc_feature/active.rs

@@ -538,5 +538,4 @@ pub fn set(&self, features: &mut Features, span: Span) {
     sym::or_patterns,
     sym::let_chains,
     sym::raw_dylib,
-    sym::track_caller,
 ];

src/test/ui/rfc-2091-track-caller/const-caller-location.stderr

-warning: the feature `track_caller` is incomplete and may cause the compiler to crash
-  --> $DIR/const-caller-location.rs:3:39
-   |
-LL | #![feature(const_fn, core_intrinsics, track_caller)]
-   |                                       ^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-

src/test/ui/rfc-2091-track-caller/error-odd-syntax.rs

-#![feature(track_caller)] //~ WARN the feature `track_caller` is incomplete
+#![feature(track_caller)]
 
 #[track_caller(1)]
 fn f() {}

src/test/ui/rfc-2091-track-caller/error-odd-syntax.stderr

@@ -4,13 +4,5 @@ error: malformed `track_caller` attribute input
 LL | #[track_caller(1)]
    | ^^^^^^^^^^^^^^^^^^ help: must be of the form: `#[track_caller]`
 
-warning: the feature `track_caller` is incomplete and may cause the compiler to crash
-  --> $DIR/error-odd-syntax.rs:1:12
-   |
-LL | #![feature(track_caller)]
-   |            ^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-
 error: aborting due to previous error
 

src/test/ui/rfc-2091-track-caller/error-with-invalid-abi.rs

-#![feature(track_caller)] //~ WARN the feature `track_caller` is incomplete
+#![feature(track_caller)]
 
 #[track_caller] //~ ERROR Rust ABI is required to use `#[track_caller]`
 extern "C" fn f() {}

src/test/ui/rfc-2091-track-caller/error-with-invalid-abi.stderr

-warning: the feature `track_caller` is incomplete and may cause the compiler to crash
-  --> $DIR/error-with-invalid-abi.rs:1:12
-   |
-LL | #![feature(track_caller)]
-   |            ^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0737]: Rust ABI is required to use `#[track_caller]`
   --> $DIR/error-with-invalid-abi.rs:3:1
    |

src/test/ui/rfc-2091-track-caller/error-with-naked.rs

-#![feature(naked_functions, track_caller)] //~ WARN the feature `track_caller` is incomplete
+#![feature(naked_functions, track_caller)]
 
 #[track_caller]
 #[naked]

src/test/ui/rfc-2091-track-caller/error-with-naked.stderr

-warning: the feature `track_caller` is incomplete and may cause the compiler to crash
-  --> $DIR/error-with-naked.rs:1:29
-   |
-LL | #![feature(naked_functions, track_caller)]
-   |                             ^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0736]: cannot use `#[track_caller]` with `#[naked]`
   --> $DIR/error-with-naked.rs:3:1
    |

src/test/ui/rfc-2091-track-caller/error-with-trait-decl.rs

-#![feature(track_caller)] //~ WARN the feature `track_caller` is incomplete
+#![feature(track_caller)]
 
 trait Trait {
     #[track_caller] //~ ERROR: `#[track_caller]` may not be used on trait methods

src/test/ui/rfc-2091-track-caller/error-with-trait-decl.stderr

-warning: the feature `track_caller` is incomplete and may cause the compiler to crash
-  --> $DIR/error-with-trait-decl.rs:1:12
-   |
-LL | #![feature(track_caller)]
-   |            ^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0738]: `#[track_caller]` may not be used on trait methods
   --> $DIR/error-with-trait-decl.rs:4:5
    |

src/test/ui/rfc-2091-track-caller/error-with-trait-default-impl.rs

-#![feature(track_caller)] //~ WARN the feature `track_caller` is incomplete
+#![feature(track_caller)]
 
 trait Trait {
     #[track_caller] //~ ERROR: `#[track_caller]` may not be used on trait methods

src/test/ui/rfc-2091-track-caller/error-with-trait-default-impl.stderr

-warning: the feature `track_caller` is incomplete and may cause the compiler to crash
-  --> $DIR/error-with-trait-default-impl.rs:1:12
-   |
-LL | #![feature(track_caller)]
-   |            ^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0738]: `#[track_caller]` may not be used on trait methods
   --> $DIR/error-with-trait-default-impl.rs:4:5
    |

src/test/ui/rfc-2091-track-caller/error-with-trait-fn-impl.rs

 // check-fail
 
-#![feature(track_caller)] //~ WARN the feature `track_caller` is incomplete
+#![feature(track_caller)]
 
 trait Trait {
     fn unwrap(&self);

src/test/ui/rfc-2091-track-caller/error-with-trait-fn-impl.stderr

-warning: the feature `track_caller` is incomplete and may cause the compiler to crash
-  --> $DIR/error-with-trait-fn-impl.rs:3:12
-   |
-LL | #![feature(track_caller)]
-   |            ^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0738]: `#[track_caller]` may not be used on trait methods
   --> $DIR/error-with-trait-fn-impl.rs:10:5
    |

src/test/ui/rfc-2091-track-caller/only-for-fns.rs

-#![feature(track_caller)] //~ WARN the feature `track_caller` is incomplete
+#![feature(track_caller)]
 
 #[track_caller]
 struct S;

src/test/ui/rfc-2091-track-caller/only-for-fns.stderr

-warning: the feature `track_caller` is incomplete and may cause the compiler to crash
-  --> $DIR/only-for-fns.rs:1:12
-   |
-LL | #![feature(track_caller)]
-   |            ^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-
 error[E0739]: attribute should be applied to function
   --> $DIR/only-for-fns.rs:3:1
    |

src/test/ui/rfc-2091-track-caller/pass.rs

 // run-pass
-#![feature(track_caller)] //~ WARN the feature `track_caller` is incomplete
+#![feature(track_caller)]
 
 #[track_caller]
 fn f() {}

src/test/ui/rfc-2091-track-caller/pass.stderr

-warning: the feature `track_caller` is incomplete and may cause the compiler to crash
-  --> $DIR/pass.rs:2:12
-   |
-LL | #![feature(track_caller)]
-   |            ^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-

src/test/ui/rfc-2091-track-caller/track-caller-attribute.stderr

-warning: the feature `track_caller` is incomplete and may cause the compiler to crash
-  --> $DIR/track-caller-attribute.rs:3:39
-   |
-LL | #![feature(const_fn, core_intrinsics, track_caller)]
-   |                                       ^^^^^^^^^^^^
-   |
-   = note: `#[warn(incomplete_features)]` on by default
-