Cargo Features

LazyStatic has no features set by default.

[dependencies]
lazy_static = { version = "1.5.0", features = ["spin_no_std"] }
spin_no_std = spin

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.

spin spin_no_std?