syntax_data: {"ast_node_type":"other","tokens":[{"end":58,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // target defaults so that they pass these checks?
context_before:         // FIXME (https://github.com/rust-lang/rust/issues/133459): do we want to change the JSON
context_after:         if kind == TargetKind::Builtin {