syntax_data: {"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"sess.dcx().emit_err(errors::SanitizersNotSupported"}]}
source_snippet:             sess.dcx().emit_err(errors::SanitizersNotSupported {
context_before:         _ => {
context_after:                 us: unsupported_sanitizers.to_string(),