syntax_data: {"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"early_dcx.early_fatal(format!("}]}
source_snippet:                 early_dcx.early_fatal(format!(
context_before:             if opt.name != "Z" && !has_z_unstable_option {
context_after:                     "the `-Z unstable-options` flag must also be passed to enable \