syntax_data: {"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // Subtle: If the predicate we are evaluating has inference
context_before:             Some(ty::ImplOverlapKind::Permitted { marker: true }) => {
context_after:                 // variables, do *not* allow discarding candidates due to