get test suite working

Cargo.lock

@@ -1421,6 +1421,7 @@ dependencies = [
  "rug",
  "rustyline",
  "select",
+ "serial_test",
  "sha3",
  "slice-deque",
  "smallvec",
@@ -1490,6 +1491,28 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serial_test"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e0bccbcf40c8938196944a3da0e133e031a33f4d6b72db3bda3cc556e361905d"
+dependencies = [
+ "lazy_static",
+ "parking_lot",
+ "serial_test_derive",
+]
+
+[[package]]
+name = "serial_test_derive"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2acd6defeddb41eb60bb468f8825d0cfd0c2a76bc03bfd235b6a1dc4f6a1ad5"
+dependencies = [
+ "proc-macro2 1.0.32",
+ "quote 1.0.10",
+ "syn 1.0.81",
+]
+
 [[package]]
 name = "sha3"
 version = "0.8.2"