Cargo Features

[dependencies]
ethash = { version = "0.4.0", default-features = false, features = ["std"] }
default = std

The std feature is set by default whenever ethash is added without default-features = false somewhere in the dependency tree.

std default

Enables std of byteorder, ethereum-types ^0.8, rlp ^0.4, and sha3 ^0.8

Ethash has 2 features without comments.