syntax_data: {"ast_node_type":"variable","tokens":[{"end":60,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let mut json_rendered = HumanReadableErrorType::Default;
context_before: pub fn parse_json(early_dcx: &EarlyDiagCtxt, matches: &getopts::Matches) -> JsonConfig {
context_after:     let mut json_color = ColorConfig::Never;