syntax_data: {"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"assert!(field.layout.is_unsized(),"}]}
source_snippet:             assert!(field.layout.is_unsized(), "invalid layout error {err:#?}");
context_before:             // See `tests/ui/layout/trivial-bounds-sized.rs` for an example.
context_after:             if cx.typing_env.param_env.caller_bounds().is_empty() {