syntax_data: {"ast_node_type":"import","tokens":[{"end":76,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // We don't do this in `as_rvalue` because we use `as_place`
context_before:             ExprKind::Borrow { arg, borrow_kind } => {
context_after:                 // for borrow expressions, so we cannot create an `RValue` that