Can't Build Veloren

Compiling hashbrown v0.13.2
error[E0554]: `#![feature]` may not be used on the stable release channel
  --> PATH-TO-ME/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.13.2/src/lib.rs:15:5
   |
15 | /     feature(
16 | |         test,
17 | |         core_intrinsics,
18 | |         dropck_eyepatch,
...  |
25 | |         build_hasher_simple_hash_one
26 | |     )
   | |_____^

   Compiling tynm v0.1.7
error[E0554]: `#![feature]` may not be used on the stable release channel
  --> PATH-TO-ME/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.13.2/src/lib.rs:16:9
   |
16 |         test,
   |         ^^^^

error[E0554]: `#![feature]` may not be used on the stable release channel
  --> PATH-TO-ME/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.13.2/src/lib.rs:17:9
   |
17 |         core_intrinsics,
   |         ^^^^^^^^^^^^^^^

error[E0554]: `#![feature]` may not be used on the stable release channel
  --> PATH-TO-ME/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.13.2/src/lib.rs:20:9
   |
20 |         extend_one,
   |         ^^^^^^^^^^

error[E0554]: `#![feature]` may not be used on the stable release channel
  --> PATH-TO-ME/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.13.2/src/lib.rs:21:9
   |
21 |         allocator_api,
   |         ^^^^^^^^^^^^^

error[E0554]: `#![feature]` may not be used on the stable release channel
  --> PATH-TO-ME/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.13.2/src/lib.rs:22:9
   |
22 |         slice_ptr_get,
   |         ^^^^^^^^^^^^^

error[E0554]: `#![feature]` may not be used on the stable release channel
  --> PATH-TO-ME/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.13.2/src/lib.rs:23:9
   |
23 |         nonnull_slice_from_raw_parts,
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0554]: `#![feature]` may not be used on the stable release channel
  --> PATH-TO-ME/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.13.2/src/lib.rs:24:9
   |
24 |         maybe_uninit_array_assume_init,
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0554]: `#![feature]` may not be used on the stable release channel
  --> PATH-TO-ME/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.13.2/src/lib.rs:25:9
   |
25 |         build_hasher_simple_hash_one
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

For more information about this error, try `rustc --explain E0554`.
error: could not compile `hashbrown` due to 9 previous errors
warning: build failed, waiting for other jobs to finish...

I am on Fedora 37. I'm building Veloren, because I want to test something. I don't know how to get this nightly compiler of rust.