src/sys/test_runners/rust/default.shard.cml

{
    capabilities: [
        { protocol: "fuchsia.test.Suite" },
    ],
    use: [
        { runner: "rust_test_runner" },
    ],
    expose: [
        {
            protocol: "fuchsia.test.Suite",
            from: "self",
        },
    ],
}