syntax_data: {"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"IntercrateAmbiguityCause::UpstreamCrateUpdate"}]}
source_snippet:             IntercrateAmbiguityCause::UpstreamCrateUpdate { trait_ref, self_ty } => {
context_before:             }
context_after:                 format!(