Cargo Features

bp3d-threads has no features set by default.

[dependencies]
bp3d-threads = { version = "2.0.0-pre.1.0.0", features = ["thread-pool", "atomic-cell", "crossbeam-scopes"] }
thread-pool = crossbeam-deque, crossbeam-queue
atomic-cell
crossbeam-scopes = crossbeam

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.

crossbeam crossbeam-scopes?
crossbeam-deque thread-pool?
crossbeam-queue thread-pool?