Cargo Features
indexed_bitvec has no features set by default.
[dependencies]
indexed_bitvec = { version = "4.0.1", features = ["implement_heapsize"] }- implement_heapsize = heapsize
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.