syntax_data: {"ast_node_type":"function","tokens":[{"end":77,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn early_err(&self, msg: impl Into<DiagMessage>) -> ErrorGuaranteed {
context_before:     #[must_use = "raise_fatal must be called on the returned ErrorGuaranteed in order to exit with a non-zero status code"]
context_after:         self.dcx.handle().err(msg)