#![cfg_attr(all(not(feature = "std"), not(test)), no_std)]
#![cfg_attr(all(any(test, feature = "_test_utils"), feature = "_bench_unstable"), feature(test))]
#![cfg_attr(all(not(feature = "std"), not(test)), no_std)]
#![cfg_attr(all(any(test, feature = "_test_utils"), feature = "_bench_unstable"), feature(test))]