Cargo Features

static_assertions_next has no features set by default.

[dependencies]
static_assertions_next = { version = "1.1.2", features = ["nightly", "proc"] }
nightly
proc = proc_static_assertions_next

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.

proc_static_assertions_next proc?