syntax_data: {"ast_node_type":"other","tokens":[{"end":15,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// errors.
context_before:     /// `MIRI_BACKTRACE` is set. This makes it only apply to miri's errors and not to all CTFE
context_after:     pub ctfe_backtrace: Lock<CtfeBacktrace>,