feat: add num_cpus

btc-address/Cargo.lock

@@ -46,6 +46,7 @@ dependencies = [
  "bs58",
  "digest",
  "hex",
+ "num_cpus",
  "rand",
  "ripemd160",
  "secp256k1",
@@ -109,6 +110,15 @@ dependencies = [
  "typenum",
 ]
 
+[[package]]
+name = "hermit-abi"
+version = "0.1.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3deed196b6e7f9e44a2ae8d94225d80302d81208b1bb673fd21fe634645c85a9"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "hex"
 version = "0.4.2"
@@ -121,6 +131,16 @@ version = "0.2.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "99e85c08494b21a9054e7fe1374a732aeadaff3980b6990b94bfd3a70f690005"
 
+[[package]]
+name = "num_cpus"
+version = "1.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05499f3756671c15885fee9034446956fff3f243d6077b91e5767df161f766b3"
+dependencies = [
+ "hermit-abi",
+ "libc",
+]
+
 [[package]]
 name = "opaque-debug"
 version = "0.2.3"