bitcoin_hashes = { version = "0.10", default-features = false }
hashbrown = { version = "0.11", optional = true }
core2 = { version = "0.3.0", default-features = false, optional = true }
bitcoin_hashes = { version = "0.10", default-features = false }
hashbrown = { version = "0.11", optional = true }
core2 = { version = "0.3.0", default-features = false, optional = true }