syntax_data: {"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// and immediately printing the backtrace to stderr.
context_before:     /// Options range from returning the error without a backtrace to returning an error
context_after:     /// The `Lock` is only used by miri to allow setting `ctfe_backtrace` after analysis when