Cargo Features

[dependencies]
write-monitor = { version = "0.0.1-alpha.3", default-features = false, features = ["std", "futures", "tokio"] }
default = std

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

std default tokio?
futures

Enables futures and pin-project

tokio = std

Enables pin-project and tokio

WriteMonitor has 4 features without comments.