syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"sess.dcx().emit_err(errors::CannotMixAndMatchSanitizers"}]}
source_snippet:         sess.dcx().emit_err(errors::CannotMixAndMatchSanitizers {
context_before:     if let Some((first, second)) = sess.opts.unstable_opts.sanitizer.mutually_exclusive() {
context_after:             first: first.to_string(),