syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":".try_to_target_usize(self.tcx)"}]}
source_snippet:                     .try_to_target_usize(self.tcx)
context_before:                 ty::Array(_, size) => size
context_after:                     .expect("expected subslice projection on fixed-size array"),