Cargo Features

[dependencies]
struct-metadata = { version = "1.1.0", default-features = false, features = ["std", "chrono", "serde_json"] }
default = chrono, std

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

std default
chrono default

Enables chrono

serde_json

Enables serde_json

struct-metadata has 4 features without comments.