syntax_data: {"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"ty::UpvarCapture::ByValue"}]}
source_snippet:                     ty::UpvarCapture::ByValue | ty::UpvarCapture::ByUse => {}
context_before:                 match capture {
context_after:                     ty::UpvarCapture::ByRef(..) => {