syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"obligation.derived_cause(ObligationCauseCode::BuiltinDerived),"}]}
source_snippet:                 obligation.derived_cause(ObligationCauseCode::BuiltinDerived),
context_before:                 self.tcx(),
context_after:                 obligation.param_env,