Cargo Features

[dependencies]
ink_storage_traits = { version = "5.1.1", default-features = false, features = ["std"] }
default = std

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

std default

Enables std of ink_metadata, ink_prelude, ink_primitives, parity-scale-codec, and scale-info

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

ink_metadata std
scale-info std