Set unstable feature names appropriately

* `core` - for the core crate
* `hash` - hashing
* `io` - io
* `path` - path
* `alloc` - alloc crate
* `rand` - rand crate
* `collections` - collections crate
* `std_misc` - other parts of std
* `test` - test crate
* `rustc_private` - everything else

1 files changed, 2 insertions, 2 deletions

diff --git a/src/libstd/fmt.rs b/src/libstd/fmt.rs
index 7d84b07da70..57b57bdfe95 100644
--- a/src/libstd/fmt.rs
+++ b/src/libstd/fmt.rs
@@ -403,7 +403,7 @@
 //! them with the same character. For example, the `{` character is escaped with
 //! `{{` and the `}` character is escaped with `}}`.
 
-#![unstable(feature = "unnamed_feature")]
+#![unstable(feature = "std_misc")]
 
 use string;
 
@@ -432,7 +432,7 @@ pub use core::fmt::{argument, argumentuint};
 /// let s = fmt::format(format_args!("Hello, {}!", "world"));
 /// assert_eq!(s, "Hello, world!".to_string());
 /// ```
-#[unstable(feature = "unnamed_feature",
+#[unstable(feature = "std_misc",
            reason = "this is an implementation detail of format! and should not \
                      be called directly")]
 pub fn format(args: Arguments) -> string::String {