Cargo Features

[dependencies]
mmap-vec = { version = "0.2.0", default-features = false, features = ["cache-dir", "serde"] }
default = cache-dir, serde

These default features are set whenever mmap-vec is added without default-features = false somewhere in the dependency tree.

cache-dir default

Enables dirs

serde default

Enables serde

MmapVec has 3 features without comments.