/// Unstable implementation detail of the `rustc` compiler, do not use.
#[rustc_builtin_macro]
#[stable(feature = "rust1", since = "1.0.0")]
- #[allow_internal_unstable(core_intrinsics, libstd_sys_internals)]
+ #[allow_internal_unstable(core_intrinsics, libstd_sys_internals, rt)]
#[deprecated(since = "1.52.0", note = "rustc-serialize is deprecated and no longer supported")]
#[doc(hidden)] // While technically stable, using it is unstable, and deprecated. Hide it.
pub macro RustcDecodable($item:item) {
/// Unstable implementation detail of the `rustc` compiler, do not use.
#[rustc_builtin_macro]
#[stable(feature = "rust1", since = "1.0.0")]
- #[allow_internal_unstable(core_intrinsics)]
+ #[allow_internal_unstable(core_intrinsics, rt)]
#[deprecated(since = "1.52.0", note = "rustc-serialize is deprecated and no longer supported")]
#[doc(hidden)] // While technically stable, using it is unstable, and deprecated. Hide it.
pub macro RustcEncodable($item:item) {