syntax_data: {"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"Some(TestBranch::Failure)"}]}
source_snippet:                         Some(TestBranch::Failure)
context_before:                     if !test.overlaps(pat, self.tcx, self.typing_env())? {
context_after:                     } else {