syntax_data: {"ast_node_type":"other","tokens":[{"end":15,"kind":"keyword","start":0,"text":"#[track_caller]"}]}
source_snippet: #[track_caller]
context_before: #[inline(never)]
context_after: pub fn span_bug_fmt<S: Into<MultiSpan>>(span: S, args: fmt::Arguments<'_>) -> ! {