#[cfg(not(feature = "nightly"))]
pub use allocator_api2::alloc::Allocator;
#[cfg(feature = "nightly")]
pub use std::alloc::Allocator;
#[cfg(not(feature = "nightly"))]
pub use allocator_api2::alloc::Layout;
#[cfg(feature = "nightly")]
pub use core::alloc::Layout;
#[cfg(not(feature = "nightly"))]
pub use allocator_api2::alloc::AllocError;
#[cfg(feature = "nightly")]
pub use std::alloc::AllocError;
#[cfg(not(feature = "nightly"))]
pub use allocator_api2::alloc::Global;
#[cfg(feature = "nightly")]
pub use std::alloc::Global;