{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"//"}]}
        // the common case since usually it appears as a dependency of `std` or `alloc`.
        // If a `#![compiler_builtins]` crate already exists, avoid injecting it twice. This is
        for (cnum, cmeta) in self.iter_crate_data() {