Cargo Features

counted-array has no features set by default.

[dependencies]
counted-array = { version = "0.1.2", features = ["nightly"] }
nightly

Enables nightly of lazy_static ^0.2

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

lazy_static nightly?

Enables lazy_static ^0.2