Cargo Features

gc-gcm has no features set by default.

[dependencies]
gc-gcm = { version = "0.10.0", features = ["no_std", "bin"] }
no_std
bin = memmap, rayon, structopt

Required by the gcm binary

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.

structopt bin?
memmap bin?
rayon bin?