syntax_data: {"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":".with_flags(sopts.unstable_opts.dcx_flags(can_emit_warnings))"}]}
source_snippet:         .with_flags(sopts.unstable_opts.dcx_flags(can_emit_warnings))
context_before:     let mut dcx = DiagCtxt::new(emitter)
context_after:         .with_registry(registry);