Cargo Features

LazyCell has no features set by default.

[dependencies]
lazycell = { version = "1.3.0", features = ["nightly", "nightly-testing", "serde"] }
nightly nightly-testing?
nightly-testing = clippy, nightly

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.

clippy nightly-testing?
serde implicit feature

Enables serde

serde:

A generic serialization/deserialization framework