syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"infcx.equate_ty_vids_raw(a_id,"}]}
source_snippet:                         infcx.equate_ty_vids_raw(a_id, b_id);
context_before:                     ty::Invariant => {
context_after:                     }