[deps] Upgrade toml

Cargo.toml

@@ -580,15 +580,15 @@ tiny-bip39 = "0.8.2"
 tiny-keccak = { version = "2.0.2", features = ["keccak", "sha3"] }
 tracing = "0.1.34"
 tracing-subscriber = { version = "0.3.17", features = ["json", "env-filter"] }
-trybuild = "1.0.70"
+trybuild = "1.0.80"
 tokio = { version = "1.21.0", features = ["full"] }
 tokio-io-timeout = "1.2.0"
 tokio-metrics = "0.1.0"
 tokio-retry = "0.3.0"
 tokio-stream = "0.1.8"
 tokio-test = "0.4.1"
 tokio-util = { version = "0.7.2", features = ["compat", "codec"] }
-toml = "0.5.9"
+toml = "0.7.4"
 tonic = { version = "0.8.3", features = [
     "tls-roots",
     "transport",

execution/executor-benchmark/src/transaction_generator.rs

@@ -212,18 +212,20 @@ impl TransactionGenerator {
         let metadata = TestCase::P2p(P2pTestCase {
             num_accounts: self.num_existing_accounts + num_new_accounts,
         });
-        let serialized = toml::to_vec(&metadata).unwrap();
+        let serialized = toml::ser::to_string(&metadata).unwrap();
         let meta_file = path.as_ref().join(META_FILENAME);
         let mut file = File::create(meta_file).unwrap();
-        file.write_all(&serialized).unwrap();
+        file.write_all(serialized.as_bytes()).unwrap();
     }
 
     pub fn read_meta<P: AsRef<Path>>(path: &P) -> usize {
         let filename = path.as_ref().join(META_FILENAME);
         File::open(filename).map_or(0, |mut file| {
             let mut contents = vec![];
             file.read_to_end(&mut contents).unwrap();
-            let test_case: TestCase = toml::from_slice(&contents).expect("Must exist.");
+            let test_case: TestCase =
+                toml::from_str(&String::from_utf8(contents).expect("Must be UTF8"))
+                    .expect("Must exist.");
             let TestCase::P2p(P2pTestCase { num_accounts }) = test_case;
             num_accounts
         })