Unstable feature gate for std::net::hostname

Author: orowith2os

library/std/src/net/hostname.rs

@@ -8,7 +8,7 @@ use std::os::raw::c_char;
 /// The returned result will, on success, return the same result [`libc::gethostname`] would return
 /// (as it is implemented using the very same function), and on error, what `errno` contains, also
 /// set by [`libc::gethostname`].
-#[stable(feature = "rust1", since = "1.84.0")]
+#[unstable(feature = "gethostname", issue = "135142")]
 pub fn hostname() -> std::io::Result<OsString> {
     // 255 bytes is the maximum allowable length for a hostname (as per the DNS spec),
     // so we shouldn't ever have problems with this. I (@orowith2os) considered using a constant

library/std/src/net/mod.rs

@@ -36,7 +36,7 @@ pub use self::tcp::{Incoming, TcpListener, TcpStream};
 #[stable(feature = "rust1", since = "1.0.0")]
 pub use self::udp::UdpSocket;
 use crate::io::{self, ErrorKind};
-#[stable(feature = "rust1", since = "1.84.0")]
+#[unstable(feature = "gethostname", issue = "135142")]
 pub use self::hostname::hostname;
 
 mod ip_addr;