syntax_data: {"ast_node_type":"other","tokens":[{"end":58,"kind":"keyword","start":0,"text":"collected.insert(ty::OutlivesPredicate(arg1,"}]}
source_snippet:         collected.insert(ty::OutlivesPredicate(arg1, r2));
context_before:     for ty::OutlivesPredicate(arg1, r2) in assumptions {
context_after:         match arg1.kind() {