{
    "extra_cfg": ["mls_build_async"],
    "features": [
        "std",
        "rayon",
        "state_update",
        "private_message",
        "custom_proposal",
        "out_of_order",
        "psk",
        "prior_epoch",
        "by_ref_proposal",
        "tree_index",
        "fast_serialize"
    ]
}