Cargo Features

[dependencies]
esp32c-rt = { version = "0.1.1", default-features = false, features = ["inline-asm", "direct-boot", "esp32c3"] }
default = direct-boot, esp32c3

These default features are set whenever esp32c-rt is added without default-features = false somewhere in the dependency tree.

inline-asm

Enables inline-asm of riscv ^0.7

direct-boot default
esp32c3 default

esp32c-rt has 4 features without comments.