syntax_data: {"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"Some(ty::ImplOverlapKind::Permitted"}]}
source_snippet:             Some(ty::ImplOverlapKind::Permitted { marker: true }) => {
context_before:             }
context_after:                 // Subtle: If the predicate we are evaluating has inference