{"ast_node_type":"function","tokens":[{"end":91,"kind":"keyword","start":0,"text":"///"}]}
    /// on the current target) as well as the user-defined `fn main` from the binary crate.
    /// this lang item, passing it the `argc` and `argv` (or null, if those don't exist
    Start,                   sym::start,               start_fn,                   Target::Fn,             GenericRequirement::Exact(1);