{"ast_node_type":"function","tokens":[{"end":49,"kind":"keyword","start":0,"text":"fn"}]}
    fn from(err: InterpErrorInfo<'tcx>) -> Self {
impl<'tcx> From<InterpErrorInfo<'tcx>> for ValTreeCreationError<'tcx> {
        // An error occurred outside the const-eval query, as part of constructing the valtree. We