syntax_data: {"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // we'll need to leave some sort of trace of this requirement in the MIR so that borrowck
context_before:     // `PartialEq` for some lifetime but *not* for `'static`? If this ever becomes a problem
context_after:     // can ensure that the type really implements `PartialEq`.