yw662 / rjson Goto Github PK

I was trying to use the rjson in my code, I am a RUST newbie, for some reason I get this error.
`
C:\dev\RUST\Workspace\rjson_example>cargo build
Updating crates.io index
Downloaded rjson v0.3.1
Compiling rjson v0.3.1
error[E0554]: #![feature] may not be used on the stable release channel
--> C:\Users\d032602.cargo\registry\src\github.com-1ecc6299db9ec823\rjson-0.3.1\src/lib.rs:2:1
|
2 | #![feature(alloc)]
| ^^^^^^^^^^^^^^^^^^

error[E0554]: #![feature] may not be used on the stable release channel
--> C:\Users\d032602.cargo\registry\src\github.com-1ecc6299db9ec823\rjson-0.3.1\src/lib.rs:3:1
|
3 | #![feature(core_intrinsics)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors

For more information about this error, try rustc --explain E0554.
error: Could not compile rjson.
`
is there some other version i need to use ?
thanks
Candy