syntax_data: {"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"Err(Box::leak(Box::new(ty::layout::LayoutError::Cycle(guar))))"}]}
source_snippet:         Err(Box::leak(Box::new(ty::layout::LayoutError::Cycle(guar))))
context_before:         // tcx.arena.alloc is pretty much equal to leaking).
context_after:     }