diff --git a/keystore/keystore_attestation_id.cpp b/keystore/keystore_attestation_id.cpp
index 75c62dd..8eade97 100644
--- a/keystore/keystore_attestation_id.cpp
+++ b/keystore/keystore_attestation_id.cpp
@@ -158,7 +158,7 @@
         return BAD_VALUE;
     }
 
-    std::string pkg_name(String8(*pinfo.package_name()).string());
+    std::string pkg_name(String8(*pinfo.package_name()).c_str());
     if (!ASN1_OCTET_STRING_set(attestation_package_info->package_name,
                                reinterpret_cast<const unsigned char*>(pkg_name.data()),
                                pkg_name.size())) {
@@ -209,7 +209,7 @@
             ALOGE("Key attestation package info lacks package name");
             return BAD_VALUE;
         }
-        std::string package_name(String8(*pinfo->package_name()).string());
+        std::string package_name(String8(*pinfo->package_name()).c_str());
         std::unique_ptr<KM_ATTESTATION_PACKAGE_INFO> attestation_package_info;
         auto rc = build_attestation_package_info(*pinfo, &attestation_package_info);
         if (rc != NO_ERROR) {
@@ -283,7 +283,7 @@
         // caller is unknown.
         if (!status.isOk()) {
             ALOGW("package manager request for key attestation ID failed with: %s %d",
-                  status.exceptionMessage().string(), status.exceptionCode());
+                  status.exceptionMessage().c_str(), status.exceptionCode());
             auto pinfo = std::make_optional<KeyAttestationPackageInfo>(
                 String16(kUnknownPackageName), 1 /* version code */,
                 std::make_shared<KeyAttestationPackageInfo::SignaturesVector>());
diff --git a/keystore2/src/crypto/lib.rs b/keystore2/src/crypto/lib.rs
index f8fc574..8434651 100644
--- a/keystore2/src/crypto/lib.rs
+++ b/keystore2/src/crypto/lib.rs
@@ -489,8 +489,8 @@
         let input = vec![0; 16];
         let mut out = vec![0; 16];
         let mut out2 = vec![0; 16];
-        let key = vec![0; 16];
-        let iv = vec![0; 12];
+        let key = [0; 16];
+        let iv = [0; 12];
         let mut tag = vec![0; 16];
         // SAFETY: The various pointers are obtained from references so they are valid, and
         // `AES_gcm_encrypt` and `AES_gcm_decrypt` don't do anything with them after they return.
@@ -523,7 +523,7 @@
 
     #[test]
     fn test_create_key_id() {
-        let blob = vec![0; 16];
+        let blob = [0; 16];
         let mut out: u64 = 0;
         // SAFETY: The pointers are obtained from references so they are valid, the length matches
         // the length of the array, and `CreateKeyId` doesn't access them after it returns.
@@ -537,8 +537,8 @@
     #[test]
     fn test_generate_key_from_password() {
         let mut key = vec![0; 16];
-        let pw = vec![0; 16];
-        let salt = vec![0; 16];
+        let pw = [0; 16];
+        let salt = [0; 16];
         // SAFETY: The pointers are obtained from references so they are valid, the salt is the
         // expected length, the other lengths match the lengths of the arrays, and
         // `generateKeyFromPassword` doesn't access them after it returns.
diff --git a/keystore2/src/fuzzers/Android.bp b/keystore2/src/fuzzers/Android.bp
index 9f3e104..0809dc8 100644
--- a/keystore2/src/fuzzers/Android.bp
+++ b/keystore2/src/fuzzers/Android.bp
@@ -20,7 +20,6 @@
     name: "keystore2_unsafe_fuzzer",
     srcs: ["keystore2_unsafe_fuzzer.rs"],
     rustlibs: [
-        "libbinder_rs",
         "libkeystore2",
         "libkeystore2_crypto_rust",
         "libkeystore2_hal_names_rust",
diff --git a/keystore2/src/fuzzers/keystore2_unsafe_fuzzer.rs b/keystore2/src/fuzzers/keystore2_unsafe_fuzzer.rs
index b8259cf..8b8843d 100644
--- a/keystore2/src/fuzzers/keystore2_unsafe_fuzzer.rs
+++ b/keystore2/src/fuzzers/keystore2_unsafe_fuzzer.rs
@@ -16,7 +16,6 @@
 
 #![no_main]
 
-use binder::get_declared_instances;
 use keystore2::{legacy_blob::LegacyBlobLoader, utils::ui_opts_2_compat};
 use keystore2_aaid::get_aaid;
 use keystore2_apc_compat::ApcHal;
@@ -94,10 +93,6 @@
         minor_version: usize,
         hidl_interface_name: &'a str,
     },
-    GetAidlInstances {
-        aidl_package: &'a str,
-        aidl_interface_name: &'a str,
-    },
     GetAaid {
         aaid_uid: u32,
     },
@@ -189,12 +184,6 @@
             } => {
                 get_hidl_instances(hidl_package, major_version, minor_version, hidl_interface_name);
             }
-            FuzzCommand::GetAidlInstances { aidl_package, aidl_interface_name } => {
-                get_declared_instances(
-                    format!("{}.{}", aidl_package, aidl_interface_name).as_str(),
-                )
-                .unwrap();
-            }
             FuzzCommand::GetAaid { aaid_uid } => {
                 let _res = get_aaid(aaid_uid);
             }
diff --git a/keystore2/src/maintenance.rs b/keystore2/src/maintenance.rs
index 73dc881..8c9ed63 100644
--- a/keystore2/src/maintenance.rs
+++ b/keystore2/src/maintenance.rs
@@ -178,7 +178,7 @@
             (SecurityLevel::TRUSTED_ENVIRONMENT, "TRUSTED_ENVIRONMENT"),
             (SecurityLevel::STRONGBOX, "STRONGBOX"),
         ];
-        sec_levels.iter().fold(Ok(()), move |result, (sec_level, sec_level_string)| {
+        sec_levels.iter().try_fold((), |_result, (sec_level, sec_level_string)| {
             let curr_result = Maintenance::call_with_watchdog(*sec_level, name, &op);
             match curr_result {
                 Ok(()) => log::info!(
@@ -193,7 +193,7 @@
                     e
                 ),
             }
-            result.and(curr_result)
+            curr_result
         })
     }