syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"#[instrument(level"}]}
source_snippet:         #[instrument(level = "debug", skip(tcx, obligation))]
context_before:         /// Flatten the `Condition` tree into a conjunction of obligations.
context_after:         fn flatten_answer_tree<'tcx>(