Cargo Features

[dependencies]
pallet-evm-precompile-bn128 = { version = "1.0.0", default-features = false, features = ["std"] }
default = std

The std feature is set by default whenever pallet-evm-precompile-bn128 is added without default-features = false somewhere in the dependency tree.

std default

Enables std of evm ^0.25.0, fp-evm ^1.0.0, sp-core ^3.0.0, and sp-io ^3.0.0

pallet-evm-precompile-bn128 has 2 features without comments.