Cargo Features

[dependencies]
onering = { version = "1.2.0", default-features = false, features = ["std"] }
default = std

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

std default

Enables std of crossbeam-utils

crossbeam-utils:

Enable to use APIs that require std. This is enabled by default.

Onering has 2 features without comments.