diff --git a/solana/bridge/agent/src/socket.rs b/solana/bridge/agent/src/socket.rs
index d84a9656..4ac007c8 100644
--- a/solana/bridge/agent/src/socket.rs
+++ b/solana/bridge/agent/src/socket.rs
@@ -3,16 +3,23 @@
 
 use std::{
     pin::Pin,
-    task::{Context, Poll},
+    task::{
+        Context,
+        Poll,
+    },
 };
 
-use tokio::io::{AsyncRead, AsyncWrite};
+use tokio::io::{
+    AsyncRead,
+    AsyncWrite,
+};
 use tonic::transport::server::Connected;
 
 #[derive(Debug)]
 pub struct UnixStream(pub tokio::net::UnixStream);
 
-impl Connected for UnixStream {}
+impl Connected for UnixStream {
+}
 
 impl AsyncRead for UnixStream {
     fn poll_read(
@@ -37,10 +44,7 @@ impl AsyncWrite for UnixStream {
         Pin::new(&mut self.0).poll_flush(cx)
     }
 
-    fn poll_shutdown(
-        mut self: Pin<&mut Self>,
-        cx: &mut Context<'_>,
-    ) -> Poll<std::io::Result<()>> {
+    fn poll_shutdown(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<std::io::Result<()>> {
         Pin::new(&mut self.0).poll_shutdown(cx)
     }
 }
diff --git a/solana/bridge/client/src/main.rs b/solana/bridge/client/src/main.rs
index 56cff290..0d895850 100644
--- a/solana/bridge/client/src/main.rs
+++ b/solana/bridge/client/src/main.rs
@@ -76,7 +76,7 @@ type CommmandResult = Result<Option<Transaction>, Error>;
 fn command_deploy_bridge(
     config: &Config,
     bridge: &Pubkey,
-    _initial_guardian: Vec<[u8; 20]>,
+    initial_guardians: Vec<[u8; 20]>,
     guardian_expiration: u32,
     message_fee: u64,
 ) -> CommmandResult {
@@ -86,11 +86,12 @@ fn command_deploy_bridge(
         .rpc_client
         .get_minimum_balance_for_rent_exemption(size_of::<BridgeData>())?;
 
-    let ix = bridge::client_instructions::initialize(
+    let ix = bridge::instructions::initialize(
         *bridge,
         config.owner.pubkey(),
         message_fee,
         guardian_expiration,
+        initial_guardians.as_slice(),
     )
     .unwrap();
     println!("config account: {}, ", ix.accounts[0].pubkey.to_string());
@@ -127,7 +128,7 @@ fn command_post_message(
         &FeeCollector::key(None, bridge),
         bridge_config.config.fee,
     );
-    let ix = bridge::client_instructions::post_message(
+    let (_, ix) = bridge::instructions::post_message(
         *bridge,
         config.owner.pubkey(),
         config.fee_payer.pubkey(),
diff --git a/solana/bridge/program/src/accounts.rs b/solana/bridge/program/src/accounts.rs
index c65de789..8294a874 100644
--- a/solana/bridge/program/src/accounts.rs
+++ b/solana/bridge/program/src/accounts.rs
@@ -30,7 +30,7 @@ impl<'b, const State: AccountState> Seeded<&GuardianSetDerivationData>
     fn seeds(data: &GuardianSetDerivationData) -> Vec<Vec<u8>> {
         vec![
             "GuardianSet".as_bytes().to_vec(),
-            data.index.to_be_bytes().to_vec()
+            data.index.to_be_bytes().to_vec(),
         ]
     }
 }
diff --git a/solana/bridge/program/src/api/initialize.rs b/solana/bridge/program/src/api/initialize.rs
index f582aa7f..4147e351 100644
--- a/solana/bridge/program/src/api/initialize.rs
+++ b/solana/bridge/program/src/api/initialize.rs
@@ -6,6 +6,7 @@ use crate::{
         GuardianSetDerivationData,
     },
     types::*,
+    Error::TooManyGuardians,
     MAX_LEN_GUARDIAN_KEYS,
 };
 use solitaire::{
@@ -47,6 +48,10 @@ pub fn initialize(
 ) -> Result<()> {
     let index = 0;
 
+    if data.initial_guardians.len() > MAX_LEN_GUARDIAN_KEYS {
+        return Err(TooManyGuardians.into());
+    }
+
     // Allocate a default guardian set, with zeroed keys.
     accs.guardian_set.index = index;
     accs.guardian_set.creation_time = 0;
diff --git a/solana/bridge/program/src/api/post_vaa.rs b/solana/bridge/program/src/api/post_vaa.rs
index 5e9c03c5..fd3c313f 100644
--- a/solana/bridge/program/src/api/post_vaa.rs
+++ b/solana/bridge/program/src/api/post_vaa.rs
@@ -118,8 +118,10 @@ pub fn post_vaa(ctx: &ExecutionContext, accs: &mut PostVAA, vaa: PostVAAData) ->
         payload: vaa.payload.clone(),
     };
 
-    accs.message.verify_derivation(ctx.program_id, &msg_derivation)?;
-    accs.guardian_set.verify_derivation(ctx.program_id, &(&vaa).into())?;
+    accs.message
+        .verify_derivation(ctx.program_id, &msg_derivation)?;
+    accs.guardian_set
+        .verify_derivation(ctx.program_id, &(&vaa).into())?;
 
     // Verify any required invariants before we process the instruction.
     check_active(&accs.guardian_set, &accs.clock)?;
diff --git a/solana/bridge/program/src/api/verify_signature.rs b/solana/bridge/program/src/api/verify_signature.rs
index a1708243..4944b3c1 100644
--- a/solana/bridge/program/src/api/verify_signature.rs
+++ b/solana/bridge/program/src/api/verify_signature.rs
@@ -52,9 +52,7 @@ impl From<&VerifySignatures<'_>> for GuardianSetDerivationData {
 
 impl From<[u8; 32]> for SignatureSetDerivationData {
     fn from(hash: [u8; 32]) -> Self {
-        SignatureSetDerivationData {
-            hash
-        }
+        SignatureSetDerivationData { hash }
     }
 }
 
@@ -196,16 +194,15 @@ pub fn verify_signatures(
 
     // Confirm at this point that the derivation succeeds, we didn't have a signature set with the
     // correct hash until this point.
-    accs.signature_set.verify_derivation(
-        ctx.program_id,
-        &msg_hash.into(),
-    )?;
+    accs.signature_set
+        .verify_derivation(ctx.program_id, &msg_hash.into())?;
 
     if !accs.signature_set.is_initialized() {
         accs.signature_set.signatures = vec![[0u8; 65]; 19];
         accs.signature_set.guardian_set_index = accs.guardian_set.index;
         accs.signature_set.hash = data.hash;
-        accs.signature_set.create(&msg_hash.into(), ctx, accs.payer.key, Exempt)?;
+        accs.signature_set
+            .create(&msg_hash.into(), ctx, accs.payer.key, Exempt)?;
     } else {
         // If the account already existed, check that the parameters match
         if accs.signature_set.guardian_set_index != accs.guardian_set.index {
diff --git a/solana/bridge/program/src/instructions.rs b/solana/bridge/program/src/instructions.rs
index a412233a..1b24b657 100644
--- a/solana/bridge/program/src/instructions.rs
+++ b/solana/bridge/program/src/instructions.rs
@@ -32,7 +32,6 @@ use crate::{
         GovernancePayloadUpgrade,
         PostedMessage,
     },
-    BridgeConfig,
     InitializeData,
     PayloadMessage,
     PostMessageData,
@@ -104,27 +103,30 @@ pub fn post_message(
         &program_id,
     );
 
-    Ok((message, Instruction {
-        program_id,
+    Ok((
+        message,
+        Instruction {
+            program_id,
 
-        accounts: vec![
-            AccountMeta::new(bridge, false),
-            AccountMeta::new(message, false),
-            AccountMeta::new(emitter, true),
-            AccountMeta::new(sequence, false),
-            AccountMeta::new(payer, true),
-            AccountMeta::new(fee_collector, false),
-            AccountMeta::new_readonly(sysvar::clock::id(), false),
-            AccountMeta::new_readonly(sysvar::rent::id(), false),
-            AccountMeta::new_readonly(solana_program::system_program::id(), false),
-        ],
+            accounts: vec![
+                AccountMeta::new(bridge, false),
+                AccountMeta::new(message, false),
+                AccountMeta::new(emitter, true),
+                AccountMeta::new(sequence, false),
+                AccountMeta::new(payer, true),
+                AccountMeta::new(fee_collector, false),
+                AccountMeta::new_readonly(sysvar::clock::id(), false),
+                AccountMeta::new_readonly(sysvar::rent::id(), false),
+                AccountMeta::new_readonly(solana_program::system_program::id(), false),
+            ],
 
-        data: crate::instruction::Instruction::PostMessage(PostMessageData {
-            nonce,
-            payload: payload.clone(),
-        })
-        .try_to_vec()?,
-    }))
+            data: crate::instruction::Instruction::PostMessage(PostMessageData {
+                nonce,
+                payload: payload.clone(),
+            })
+            .try_to_vec()?,
+        },
+    ))
 }
 
 pub fn verify_signatures(
diff --git a/solana/bridge/program/src/lib.rs b/solana/bridge/program/src/lib.rs
index f4028086..af497da3 100644
--- a/solana/bridge/program/src/lib.rs
+++ b/solana/bridge/program/src/lib.rs
@@ -49,9 +49,6 @@ pub use vaa::{
     SerializePayload,
 };
 
-// BridgeConfig is the type of the main state the program maintains for itself.
-use types::BridgeConfig;
-
 const MAX_LEN_GUARDIAN_KEYS: usize = 19;
 
 #[derive(Debug)]
@@ -70,6 +67,7 @@ enum Error {
     PostVAAConsensusFailed,
     PostVAAGuardianSetExpired,
     VAAAlreadyExecuted,
+    TooManyGuardians,
 }
 
 /// Translate from program specific errors to Solitaire framework errors. Log the error on the way
diff --git a/solana/bridge/program/tests/integration.rs b/solana/bridge/program/tests/integration.rs
index c8aadfcd..ff54664f 100644
--- a/solana/bridge/program/tests/integration.rs
+++ b/solana/bridge/program/tests/integration.rs
@@ -47,12 +47,12 @@ use std::time::{
     SystemTime,
 };
 
-use sha3::Digest;
 use hex_literal::hex;
 use secp256k1::{
     PublicKey,
     SecretKey,
 };
+use sha3::Digest;
 
 use bridge::{
     accounts::GuardianSetDerivationData,
@@ -67,8 +67,8 @@ use bridge::{
     },
     Initialize,
     PostVAAData,
-    Signature,
     SerializePayload,
+    Signature,
 };
 
 mod common;
@@ -134,21 +134,10 @@ fn test_bridge_messages() {
     let data = update_guardian_set(1, &public_keys);
     let message_key = common::post_message(client, program, payer, &emitter, nonce, data.clone());
 
-    common::upgrade_guardian_set(
-        client,
-        program,
-        payer,
-        message_key,
-        emitter.pubkey(),
-        0,
-        1,
-    );
+    common::upgrade_guardian_set(client, program, payer, message_key, emitter.pubkey(), 0, 1);
 }
 
-fn update_guardian_set(
-    index: u32,
-    keys: &[[u8; 20]],
-) -> Vec<u8> {
+fn update_guardian_set(index: u32, keys: &[[u8; 20]]) -> Vec<u8> {
     let mut v = Cursor::new(Vec::new());
     v.write_u32::<BigEndian>(index).unwrap();
     v.write_u8(keys.len() as u8).unwrap();
diff --git a/solana/solitaire/program/src/macros.rs b/solana/solitaire/program/src/macros.rs
index ab1b46fd..0c04e022 100644
--- a/solana/solitaire/program/src/macros.rs
+++ b/solana/solitaire/program/src/macros.rs
@@ -19,7 +19,7 @@ macro_rules! trace_impl {
 #[cfg(not(feature = "trace"))]
 #[macro_export]
 macro_rules! trace_impl {
-    ( $($arg:tt)* ) => {}
+    ( $($arg:tt)* ) => {};
 }
 
 /// This is our main codegen macro. It takes as input a list of enum-like variants mapping field
diff --git a/solana/solitaire/program/src/processors/seeded.rs b/solana/solitaire/program/src/processors/seeded.rs
index 6470e7d2..a10bb879 100644
--- a/solana/solitaire/program/src/processors/seeded.rs
+++ b/solana/solitaire/program/src/processors/seeded.rs
@@ -24,9 +24,9 @@ use borsh::{
 use solana_program::{
     entrypoint::ProgramResult,
     instruction::Instruction,
+    msg,
     program::invoke_signed,
     pubkey::Pubkey,
-    msg,
 };
 
 pub trait AccountSize {
diff --git a/solana/solitaire/program/src/types/context.rs b/solana/solitaire/program/src/types/context.rs
index 965b012a..1bd55689 100644
--- a/solana/solitaire/program/src/types/context.rs
+++ b/solana/solitaire/program/src/types/context.rs
@@ -1,3 +1,4 @@
+use crate::trace;
 use solana_program::{
     account_info::{
         next_account_info,
@@ -6,7 +7,6 @@ use solana_program::{
     pubkey::Pubkey,
 };
 use std::slice::Iter;
-use crate::trace;
 
 /// The context is threaded through each check. Include anything within this structure that you
 /// would like to have access to as each layer of dependency is peeled off.