diff --git a/src/arch/src/aarch64/fdt.rs b/src/arch/src/aarch64/fdt.rs
index 8319bc27808..a5f321aeae2 100644
--- a/src/arch/src/aarch64/fdt.rs
+++ b/src/arch/src/aarch64/fdt.rs
@@ -82,12 +82,12 @@ pub enum Error {
 type Result<T> = result::Result<T, Error>;
 
 /// Creates the flattened device tree for this aarch64 microVM.
-pub fn create_fdt<T: DeviceInfoForFDT + Clone + Debug>(
+pub fn create_fdt<T: DeviceInfoForFDT + Clone + Debug, S: std::hash::BuildHasher>(
     guest_mem: &GuestMemoryMmap,
     vcpu_mpidr: Vec<u64>,
     cmdline: &CStr,
-    device_info: &HashMap<(DeviceType, String), T>,
-    gic_device: &Box<dyn GICDevice>,
+    device_info: &HashMap<(DeviceType, String), T, S>,
+    gic_device: &dyn GICDevice,
     initrd: &Option<InitrdConfig>,
 ) -> Result<Vec<u8>> {
     // Alocate stuff necessary for the holding the blob.
@@ -116,7 +116,7 @@ pub fn create_fdt<T: DeviceInfoForFDT + Clone + Debug>(
     create_timer_node(&mut fdt)?;
     create_clock_node(&mut fdt)?;
     create_psci_node(&mut fdt)?;
-    create_devices_node(&mut fdt, device_info)?;
+    create_devices_node(&mut fdt, &device_info)?;
 
     // End Header node.
     append_end_node(&mut fdt)?;
@@ -299,26 +299,28 @@ fn generate_prop64(cells: &[u64]) -> Vec<u8> {
 }
 
 // Following are the auxiliary function for creating the different nodes that we append to our FDT.
-fn create_cpu_nodes(fdt: &mut Vec<u8>, vcpu_mpidr: &Vec<u64>) -> Result<()> {
+fn create_cpu_nodes(fdt: &mut Vec<u8>, vcpu_mpidr: &[u64]) -> Result<()> {
     // See https://github.com/torvalds/linux/blob/master/Documentation/devicetree/bindings/arm/cpus.yaml.
     append_begin_node(fdt, "cpus")?;
     // As per documentation, on ARM v8 64-bit systems value should be set to 2.
     append_property_u32(fdt, "#address-cells", 0x02)?;
     append_property_u32(fdt, "#size-cells", 0x0)?;
-    let num_cpus = vcpu_mpidr.len();
 
-    for cpu_index in 0..num_cpus {
+    let num_cpus = vcpu_mpidr.len();
+    for (cpu_index, mpidr) in vcpu_mpidr.iter().enumerate() {
         let cpu_name = format!("cpu@{:x}", cpu_index);
         append_begin_node(fdt, &cpu_name)?;
         append_property_string(fdt, "device_type", "cpu")?;
         append_property_string(fdt, "compatible", "arm,arm-v8")?;
         if num_cpus > 1 {
-            // This is required on armv8 64-bit. See aforementioned documentation.
+            // If the microVM has more than 1 vcpu we need to enable the power
+            // state coordination interface (PSCI) which will decide for us which
+            // vcpu is running or halted.
             append_property_string(fdt, "enable-method", "psci")?;
         }
         // Set the field to first 24 bits of the MPIDR - Multiprocessor Affinity Register.
         // See http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0488c/BABHBJCI.html.
-        append_property_u64(fdt, "reg", vcpu_mpidr[cpu_index] & 0x7FFFFF)?;
+        append_property_u64(fdt, "reg", mpidr & 0x7F_FFFF)?;
         append_end_node(fdt)?;
     }
     append_end_node(fdt)?;
@@ -364,7 +366,7 @@ fn create_chosen_node(
     Ok(())
 }
 
-fn create_gic_node(fdt: &mut Vec<u8>, gic_device: &Box<dyn GICDevice>) -> Result<()> {
+fn create_gic_node(fdt: &mut Vec<u8>, gic_device: &dyn GICDevice) -> Result<()> {
     let gic_reg_prop = generate_prop64(gic_device.device_properties());
 
     append_begin_node(fdt, "intc")?;
@@ -400,7 +402,7 @@ fn create_clock_node(fdt: &mut Vec<u8>) -> Result<()> {
     append_begin_node(fdt, "apb-pclk")?;
     append_property_string(fdt, "compatible", "fixed-clock")?;
     append_property_u32(fdt, "#clock-cells", 0x0)?;
-    append_property_u32(fdt, "clock-frequency", 24000000)?;
+    append_property_u32(fdt, "clock-frequency", 24_000_000)?;
     append_property_string(fdt, "clock-output-names", "clk24mhz")?;
     append_property_u32(fdt, "phandle", CLOCK_PHANDLE)?;
     append_end_node(fdt)?;
@@ -498,9 +500,9 @@ fn create_rtc_node<T: DeviceInfoForFDT + Clone + Debug>(
     Ok(())
 }
 
-fn create_devices_node<T: DeviceInfoForFDT + Clone + Debug>(
+fn create_devices_node<T: DeviceInfoForFDT + Clone + Debug, S: std::hash::BuildHasher>(
     fdt: &mut Vec<u8>,
-    dev_info: &HashMap<(DeviceType, String), T>,
+    dev_info: &HashMap<(DeviceType, String), T, S>,
 ) -> Result<()> {
     // Create one temp Vec to store all virtio devices
     let mut ordered_virtio_device: Vec<&T> = Vec::new();
@@ -571,15 +573,12 @@ mod tests {
             ),
             (
                 (DeviceType::Virtio(1), "virtio".to_string()),
-                MMIODeviceInfo {
-                    addr: 0x00 + LEN,
-                    irq: 2,
-                },
+                MMIODeviceInfo { addr: LEN, irq: 2 },
             ),
             (
                 (DeviceType::RTC, "rtc".to_string()),
                 MMIODeviceInfo {
-                    addr: 0x00 + 2 * LEN,
+                    addr: 2 * LEN,
                     irq: 3,
                 },
             ),
@@ -595,7 +594,7 @@ mod tests {
             vec![0],
             &CString::new("console=tty0").unwrap(),
             &dev_info,
-            &gic,
+            gic.as_ref(),
             &None,
         )
         .is_ok())
@@ -613,7 +612,7 @@ mod tests {
             vec![0],
             &CString::new("console=tty0").unwrap(),
             &HashMap::<(DeviceType, std::string::String), MMIODeviceInfo>::new(),
-            &gic,
+            gic.as_ref(),
             &None,
         )
         .unwrap();
@@ -654,7 +653,7 @@ mod tests {
         let vm = kvm.create_vm().unwrap();
         let gic = create_gic(&vm, 1).unwrap();
         let initrd = InitrdConfig {
-            address: GuestAddress(0x10000000),
+            address: GuestAddress(0x1000_0000),
             size: 0x1000,
         };
 
@@ -663,7 +662,7 @@ mod tests {
             vec![0],
             &CString::new("console=tty0").unwrap(),
             &HashMap::<(DeviceType, std::string::String), MMIODeviceInfo>::new(),
-            &gic,
+            gic.as_ref(),
             &Some(initrd),
         )
         .unwrap();
diff --git a/src/arch/src/aarch64/gic.rs b/src/arch/src/aarch64/gic.rs
index e3a51cb06a0..030784204c4 100644
--- a/src/arch/src/aarch64/gic.rs
+++ b/src/arch/src/aarch64/gic.rs
@@ -46,7 +46,7 @@ pub trait GICDevice {
         Self: Sized;
 
     /// Setup the device-specific attributes
-    fn init_device_attributes(gic_device: &Box<dyn GICDevice>) -> Result<()>
+    fn init_device_attributes(gic_device: &dyn GICDevice) -> Result<()>
     where
         Self: Sized;
 
@@ -76,10 +76,10 @@ pub trait GICDevice {
         Self: Sized,
     {
         let attr = kvm_bindings::kvm_device_attr {
-            group: group,
-            attr: attr,
-            addr: addr,
-            flags: flags,
+            group,
+            attr,
+            addr,
+            flags,
         };
         fd.set_device_attr(&attr)
             .map_err(Error::SetDeviceAttribute)?;
@@ -88,7 +88,7 @@ pub trait GICDevice {
     }
 
     /// Finalize the setup of a GIC device
-    fn finalize_device(gic_device: &Box<dyn GICDevice>) -> Result<()>
+    fn finalize_device(gic_device: &dyn GICDevice) -> Result<()>
     where
         Self: Sized,
     {
@@ -128,9 +128,9 @@ pub trait GICDevice {
 
         let device = Self::create_device(vgic_fd, vcpu_count);
 
-        Self::init_device_attributes(&device)?;
+        Self::init_device_attributes(device.as_ref())?;
 
-        Self::finalize_device(&device)?;
+        Self::finalize_device(device.as_ref())?;
 
         Ok(device)
     }
diff --git a/src/arch/src/aarch64/gicv2.rs b/src/arch/src/aarch64/gicv2.rs
index b68ab8c854b..3f0ed2507c8 100644
--- a/src/arch/src/aarch64/gicv2.rs
+++ b/src/arch/src/aarch64/gicv2.rs
@@ -78,18 +78,18 @@ impl GICDevice for GICv2 {
 
     fn create_device(fd: DeviceFd, vcpu_count: u64) -> Box<dyn GICDevice> {
         Box::new(GICv2 {
-            fd: fd,
+            fd,
             properties: [
                 GICv2::get_dist_addr(),
                 GICv2::get_dist_size(),
                 GICv2::get_cpu_addr(),
                 GICv2::get_cpu_size(),
             ],
-            vcpu_count: vcpu_count,
+            vcpu_count,
         })
     }
 
-    fn init_device_attributes(gic_device: &Box<dyn GICDevice>) -> Result<()> {
+    fn init_device_attributes(gic_device: &dyn GICDevice) -> Result<()> {
         /* Setting up the distributor attribute.
         We are placing the GIC below 1GB so we need to substract the size of the distributor. */
         Self::set_device_attribute(
diff --git a/src/arch/src/aarch64/gicv3.rs b/src/arch/src/aarch64/gicv3.rs
index 6c0d8c30c16..5c339965d1f 100644
--- a/src/arch/src/aarch64/gicv3.rs
+++ b/src/arch/src/aarch64/gicv3.rs
@@ -78,18 +78,18 @@ impl GICDevice for GICv3 {
 
     fn create_device(fd: DeviceFd, vcpu_count: u64) -> Box<dyn GICDevice> {
         Box::new(GICv3 {
-            fd: fd,
+            fd,
             properties: [
                 GICv3::get_dist_addr(),
                 GICv3::get_dist_size(),
                 GICv3::get_redists_addr(vcpu_count),
                 GICv3::get_redists_size(vcpu_count),
             ],
-            vcpu_count: vcpu_count,
+            vcpu_count,
         })
     }
 
-    fn init_device_attributes(gic_device: &Box<dyn GICDevice>) -> Result<()> {
+    fn init_device_attributes(gic_device: &dyn GICDevice) -> Result<()> {
         /* Setting up the distributor attribute.
          We are placing the GIC below 1GB so we need to substract the size of the distributor.
         */
@@ -108,7 +108,7 @@ impl GICDevice for GICv3 {
             &gic_device.device_fd(),
             kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ADDR,
             u64::from(kvm_bindings::KVM_VGIC_V3_ADDR_TYPE_REDIST),
-            &GICv3::get_redists_addr(u64::from(gic_device.vcpu_count())) as *const u64 as u64,
+            &GICv3::get_redists_addr(gic_device.vcpu_count()) as *const u64 as u64,
             0,
         )?;
 
diff --git a/src/arch/src/aarch64/mod.rs b/src/arch/src/aarch64/mod.rs
index d06904a72a4..132374d9fb7 100644
--- a/src/arch/src/aarch64/mod.rs
+++ b/src/arch/src/aarch64/mod.rs
@@ -52,12 +52,12 @@ pub fn arch_memory_regions(size: usize) -> Vec<(GuestAddress, usize)> {
 /// * `device_info` - A hashmap containing the attached devices for building FDT device nodes.
 /// * `gic_device` - The GIC device.
 /// * `initrd` - Information about an optional initrd.
-pub fn configure_system<T: DeviceInfoForFDT + Clone + Debug>(
+pub fn configure_system<T: DeviceInfoForFDT + Clone + Debug, S: std::hash::BuildHasher>(
     guest_mem: &GuestMemoryMmap,
     cmdline_cstring: &CStr,
     vcpu_mpidr: Vec<u64>,
-    device_info: &HashMap<(DeviceType, String), T>,
-    gic_device: &Box<dyn GICDevice>,
+    device_info: &HashMap<(DeviceType, String), T, S>,
+    gic_device: &dyn GICDevice,
     initrd: &Option<super::InitrdConfig>,
 ) -> super::Result<()> {
     fdt::create_fdt(
@@ -84,12 +84,12 @@ pub fn initrd_load_addr(guest_mem: &GuestMemoryMmap, initrd_size: usize) -> supe
     {
         Some(offset) => {
             if guest_mem.address_in_range(offset) {
-                return Ok(offset.raw_value());
+                Ok(offset.raw_value())
             } else {
-                return Err(Error::InitrdAddress);
+                Err(Error::InitrdAddress)
             }
         }
-        None => return Err(Error::InitrdAddress),
+        None => Err(Error::InitrdAddress),
     }
 }
 
diff --git a/src/arch/src/aarch64/regs.rs b/src/arch/src/aarch64/regs.rs
index f6f1e74e829..0ab09c141c2 100644
--- a/src/arch/src/aarch64/regs.rs
+++ b/src/arch/src/aarch64/regs.rs
@@ -54,7 +54,7 @@ const PSTATE_FAULT_BITS_64: u64 = PSR_MODE_EL1h | PSR_A_BIT | PSR_F_BIT | PSR_I_
 // we're just doing pointer math on it, so in theory, it should safe.
 macro_rules! offset__of {
     ($str:ty, $field:ident) => {
-        unsafe { &(*(0 as *const $str)).$field as *const _ as usize }
+        unsafe { &(*(std::ptr::null::<$str>())).$field as *const _ as usize }
     };
 }
 
@@ -188,6 +188,6 @@ mod tests {
         assert!(read_mpidr(&vcpu).is_err());
 
         vcpu.vcpu_init(&kvi).unwrap();
-        assert_eq!(read_mpidr(&vcpu).unwrap(), 0x80000000);
+        assert_eq!(read_mpidr(&vcpu).unwrap(), 0x8000_0000);
     }
 }
diff --git a/src/devices/src/legacy/rtc_pl031.rs b/src/devices/src/legacy/rtc_pl031.rs
index 3b7caa2a8ca..4d3b37ff6a1 100644
--- a/src/devices/src/legacy/rtc_pl031.rs
+++ b/src/devices/src/legacy/rtc_pl031.rs
@@ -201,7 +201,7 @@ mod tests {
 
         // Read and write to the MR register.
         byte_order::write_le_u32(&mut data, 123);
-        rtc.write(RTCMR, &mut data);
+        rtc.write(RTCMR, &data);
         rtc.read(RTCMR, &mut data);
         let v = byte_order::read_le_u32(&data[..]);
         assert_eq!(v, 123);
@@ -210,7 +210,7 @@ mod tests {
         let v = utils::time::get_time(utils::time::ClockType::Real);
         byte_order::write_le_u32(&mut data, (v / utils::time::NANOS_PER_SECOND) as u32);
         let previous_now_before = rtc.previous_now;
-        rtc.write(RTCLR, &mut data);
+        rtc.write(RTCLR, &data);
 
         assert!(rtc.previous_now > previous_now_before);
 
@@ -222,7 +222,7 @@ mod tests {
         // Test with non zero value.
         let non_zero = 1;
         byte_order::write_le_u32(&mut data, non_zero);
-        rtc.write(RTCIMSC, &mut data);
+        rtc.write(RTCIMSC, &data);
         // The interrupt line should be on.
         assert!(rtc.interrupt_evt.read().unwrap() == 1);
         rtc.read(RTCIMSC, &mut data);
@@ -231,14 +231,14 @@ mod tests {
 
         // Now test with 0.
         byte_order::write_le_u32(&mut data, 0);
-        rtc.write(RTCIMSC, &mut data);
+        rtc.write(RTCIMSC, &data);
         rtc.read(RTCIMSC, &mut data);
         let v = byte_order::read_le_u32(&data[..]);
         assert_eq!(0, v);
 
         // Read and write to the ICR register.
         byte_order::write_le_u32(&mut data, 1);
-        rtc.write(RTCICR, &mut data);
+        rtc.write(RTCICR, &data);
         // The interrupt line should be on.
         assert!(rtc.interrupt_evt.read().unwrap() > 1);
         let v_before = byte_order::read_le_u32(&data[..]);
@@ -253,7 +253,7 @@ mod tests {
 
         // Attempts to turn off the RTC should not go through.
         byte_order::write_le_u32(&mut data, 0);
-        rtc.write(RTCCR, &mut data);
+        rtc.write(RTCCR, &data);
         rtc.read(RTCCR, &mut data);
         let v = byte_order::read_le_u32(&data[..]);
         assert_eq!(v, 1);
@@ -262,7 +262,7 @@ mod tests {
         // the CID and PID from.
         byte_order::write_le_u32(&mut data, 0);
         let no_errors_before = METRICS.rtc.error_count.count();
-        rtc.write(AMBA_ID_LOW, &mut data);
+        rtc.write(AMBA_ID_LOW, &data);
         let no_errors_after = METRICS.rtc.error_count.count();
         assert_eq!(no_errors_after - no_errors_before, 1);
         // However, reading from the AMBA_ID_LOW should succeed upon read.
diff --git a/src/kernel/src/loader/mod.rs b/src/kernel/src/loader/mod.rs
index 381665a0a61..bcf5092a4ad 100644
--- a/src/kernel/src/loader/mod.rs
+++ b/src/kernel/src/loader/mod.rs
@@ -215,7 +215,7 @@ where
         .seek(SeekFrom::Start(0))
         .map_err(|_| Error::SeekKernelImage)?;
 
-    kernel_load_offset = kernel_load_offset + start_address;
+    kernel_load_offset += start_address;
     guest_mem
         .read_from(
             GuestAddress(kernel_load_offset),
diff --git a/src/vmm/src/builder.rs b/src/vmm/src/builder.rs
index 78628652596..6c3ebd7535a 100644
--- a/src/vmm/src/builder.rs
+++ b/src/vmm/src/builder.rs
@@ -679,7 +679,7 @@ pub fn configure_system_for_boot(
                 .map_err(Internal)?;
         }
 
-        let vcpu_mpidr = vcpus.into_iter().map(|cpu| cpu.get_mpidr()).collect();
+        let vcpu_mpidr = vcpus.iter_mut().map(|cpu| cpu.get_mpidr()).collect();
         arch::aarch64::configure_system(
             &vmm.guest_memory,
             &boot_cmdline.as_cstring().map_err(LoadCommandline)?,
diff --git a/src/vmm/src/vstate.rs b/src/vmm/src/vstate.rs
index acdf2da6430..7bce580fc70 100644
--- a/src/vmm/src/vstate.rs
+++ b/src/vmm/src/vstate.rs
@@ -50,7 +50,7 @@ use vmm_config::machine_config::CpuFeaturesTemplate;
 #[cfg(target_arch = "x86_64")]
 const MAGIC_IOPORT_SIGNAL_GUEST_BOOT_COMPLETE: u64 = 0x03f0;
 #[cfg(target_arch = "aarch64")]
-const MAGIC_IOPORT_SIGNAL_GUEST_BOOT_COMPLETE: u64 = 0x40000000;
+const MAGIC_IOPORT_SIGNAL_GUEST_BOOT_COMPLETE: u64 = 0x4000_0000;
 const MAGIC_VALUE_SIGNAL_GUEST_BOOT_COMPLETE: u8 = 123;
 
 /// Signal number (SIGRTMIN) used to kick Vcpus.
@@ -480,8 +480,11 @@ impl Vm {
 
     /// Gets a reference to the irqchip of the VM
     #[cfg(target_arch = "aarch64")]
-    pub fn get_irqchip(&self) -> &Box<dyn GICDevice> {
-        &self.irqchip_handle.as_ref().expect("IRQ chip not set")
+    pub fn get_irqchip(&self) -> &dyn GICDevice {
+        self.irqchip_handle
+            .as_ref()
+            .expect("IRQ chip not set")
+            .as_ref()
     }
 
     /// Gets a reference to the kvm file descriptor owned by this VM.
diff --git a/tests/integration_tests/build/test_style.py b/tests/integration_tests/build/test_style.py
index 4734e7cfdcf..8d6f1d7367b 100644
--- a/tests/integration_tests/build/test_style.py
+++ b/tests/integration_tests/build/test_style.py
@@ -11,11 +11,14 @@
 import framework.utils as utils
 
 SUCCESS_CODE = 0
+MACHINE = platform.machine()
+TARGETS = ["{}-unknown-linux-gnu".format(MACHINE),
+           "{}-unknown-linux-musl".format(MACHINE)]
 
 
 @pytest.mark.timeout(120)
 @pytest.mark.skipif(
-    platform.machine() != "x86_64",
+    MACHINE != "x86_64",
     reason="no need to test it on multiple platforms"
 )
 def test_rust_style():
@@ -30,7 +33,7 @@ def test_rust_style():
 
 @pytest.mark.timeout(120)
 @pytest.mark.skipif(
-    platform.machine() != "x86_64",
+    MACHINE != "x86_64",
     reason="no need to test it on multiple platforms"
 )
 def test_python_style():
@@ -66,14 +69,15 @@ def test_python_style():
     ])
 
 
-@pytest.mark.skipif(
-    platform.machine() != "x86_64",
-    reason="no need to test it on multiple platforms"
+@pytest.mark.parametrize(
+    "target",
+    TARGETS
 )
-def test_rust_clippy():
+def test_rust_clippy(target):
     """Fails if clippy generates any error, warnings are ignored."""
     utils.run_cmd(
-        'cargo clippy --all --profile test -- -D warnings')
+        'cargo clippy --target {} --all --profile test'
+        ' -- -D warnings'.format(target))
 
 
 def check_swagger_style(yaml_spec):
@@ -87,7 +91,7 @@ def check_swagger_style(yaml_spec):
 
 
 @pytest.mark.skipif(
-    platform.machine() != "x86_64",
+    MACHINE != "x86_64",
     reason="no need to test it on multiple platforms"
 )
 def test_firecracker_swagger():