syntax_data: {"ast_node_type":"other","tokens":[{"end":3,"kind":"keyword","start":0,"text":"//!"}]}
source_snippet: //!
context_before: //! - `as_place` -> for rvalues, falls back to `as_temp` and returns that
context_after: //! As you can see, there is a cycle where `into` can (in theory) fallback to `as_temp`