syntax_data: {"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // cache it as otherwise rustdoc hangs when compiling diesel.
context_before:         // global cache as we don't cache overflow in the global cache but need to
context_after:         infcx.selection_cache.get(&(param_env, pred), tcx)