{"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"//"}]}
                        // While we can't project into `NonNull<_>` in a basic block
                        new_projections.extend_from_slice(&build_projection(unique_ty, nonnull_ty));
                        // due to MCP#807, this is debug info where it's fine.