Cargo Features

derivate has no features set by default.

[dependencies]
derivate = { version = "0.1.0", features = ["nightly"] }
nightly = compiletest_rs

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.

compiletest_rs nightly?

Enables compiletest_rs ^0.2