Cargo Features

[dependencies]
swap-buffer-queue = { version = "0.2.1", default-features = false, features = ["std", "alloc", "stream", "write"] }
default = std

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

std default stream? = alloc

Affects swap-buffer-queue::write_vectored

alloc std
stream = std

Enables futures-core and futures-util

write

Affects swap-buffer-queue::write, swap-buffer-queue::write_vectored