Cargo Features

[dependencies]
pallet-authorship = { version = "35.0.0", default-features = false, features = ["std", "try-runtime"] }
default = std

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

std default

Enables std of parity-scale-codec, frame-support, frame-system, scale-info, sp-runtime, and sp-std

try-runtime

Enables try-runtime of frame-support, frame-system, and sp-runtime

pallet-authorship has 3 features without comments.