syntax_data: {"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// The `Lock` is only used by miri to allow setting `ctfe_backtrace` after analysis when
context_before:     /// and immediately printing the backtrace to stderr.
context_after:     /// `MIRI_BACKTRACE` is set. This makes it only apply to miri's errors and not to all CTFE