syntax_data: {"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"(Bound::Unbounded,"}]}
source_snippet:                     (Bound::Unbounded, Bound::Unbounded) => {}
context_before:                 match self.tcx.layout_scalar_valid_range(adt_def.did()) {
context_after:                     _ => self.requires_unsafe(expr.span, InitializingTypeWith),