syntax_data: {"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"early_dcx.early_fatal(format!("}]}
source_snippet:             early_dcx.early_fatal(format!(
context_before:         Some(arg) => Edition::from_str(&arg).unwrap_or_else(|_| {
context_after:                 "argument for `--edition` must be one of: \